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source: soft/giet_vm/giet_boot/boot.c @ 423

Last change on this file since 423 was 412, checked in by alain, 10 years ago
Major evolution: the page table initialisation has been completely redesigned to support both big pages (2 Mbytes) and small pages (4 Kbytes) for both kernel and user vsegs.
File size: 91.3 KB

Rev	Line
[412]	1	/////////////////////////////////////////////////////////////////////////////////////////
[258]	2	// File : boot.c
	3	// Date : 01/11/2013
	4	// Author : alain greiner
	5	// Copyright (c) UPMC-LIP6
	6	//////////////////////////////////////////////////////////////////////////////////////////
	7	// The boot.c file is part of the GIET-VM nano-kernel.
	8	//
	9	// This nano-kernel has been written for the MIPS32 processor.
[359]	10	// The virtual adresses are on 32 bits and use the (unsigned int) type. The
[258]	11	// physicals addresses can have up to 40 bits, and use the (unsigned long long) type.
[412]	12	// It natively supports clusterised shared memory multi-processors architectures,
[263]	13	// where each processor is identified by a composite index (cluster_xy, local_id),
[258]	14	// and where there is one physical memory bank per cluster.
	15	//
[359]	16	// This code, executed in the boot phase by proc[0,0,0], performs the following tasks:
	17	// - load into memory various binary files, from a FAT32 file system,
[258]	18	// - build the various page tables (one page table per vspace)
	19	// - initialize the shedulers (one scheduler per processor)
	20	//
	21	// 1) The binary files to be loaded are:
	22	// - the "map.bin" file contains the hardware architecture description and the
	23	// mapping directives. It must be stored in the the seg_boot_mapping segment
[321]	24	// (at address SEG_BOOT_MAPPING_BASE defined in hard_config.h file).
[258]	25	// - the "sys.elf" file contains the kernel binary code and data.
	26	// - the various "application.elf" files.
	27	//
	28	// 2) The map.bin file contains the binary representation of the map.xml file defining:
	29	// - the hardware architecture: number of clusters, number or processors,
	30	// size of the memory segments, and peripherals in each cluster.
	31	// - The structure of the various multi-threaded software applications:
	32	// number of tasks, communication channels.
[309]	33	// - The mapping: grouping of virtual objects (vobj) in the virtual segments (vseg),
[258]	34	// placement of virtual segments (vseg) in the physical segments (pseg), placement
	35	// of software tasks on the processors,
	36	//
	37	// 3) The GIET-VM uses the paged virtual memory to provides two services:
	38	// - classical memory protection, when several independant applications compiled
	39	// in different virtual spaces are executing on the same hardware platform.
[412]	40	// - data placement in NUMA architectures, to control the placement
	41	// of the software objects (vsegs) on the physical memory banks (psegs).
[258]	42	//
[412]	43	// The max number of vspaces (GIET_NB_VSPACE_MAX) is a configuration parameter.
[258]	44	// The page table are statically build in the boot phase, and they do not
[412]	45	// change during execution.
	46	// The GIET_VM uses both small pages (4 Kbytes), and big pages (2 Mbytes).
[258]	47	//
	48	// Each page table (one page table per virtual space) is monolithic, and contains
[412]	49	// one PT1 (8 Kbytes) and a variable number of PT2s (4 Kbytes each). For each vspace,
	50	// the numberof PT2s is defined by the size of the PTAB vobj in the mapping.
	51	// The PT1 is indexed by the ix1 field (11 bits) of the VPN. Each entry is 32 bits.
	52	// A PT2 is indexed the ix2 field (9 bits) of the VPN. Each entry is a double word.
	53	// The first word contains the flags, the second word contains the PPN.
	54	//
	55	// The page tables can be distributed in all clusters.
[263]	56	///////////////////////////////////////////////////////////////////////////////////////
	57	// Implementation Notes:
	58	//
	59	// 1) The cluster_id variable is a linear index in the mapping_info array of clusters.
	60	// We use the cluster_xy variable for the tological index = x << Y_WIDTH + y
[412]	61	//
[263]	62	///////////////////////////////////////////////////////////////////////////////////////
[258]	63
[263]	64	#include <giet_config.h>
[258]	65	#include <mwmr_channel.h>
	66	#include <barrier.h>
	67	#include <memspace.h>
	68	#include <tty_driver.h>
	69	#include <xcu_driver.h>
[347]	70	#include <bdv_driver.h>
[258]	71	#include <dma_driver.h>
	72	#include <cma_driver.h>
	73	#include <nic_driver.h>
	74	#include <ioc_driver.h>
[299]	75	#include <iob_driver.h>
[295]	76	#include <pic_driver.h>
[258]	77	#include <mwr_driver.h>
	78	#include <ctx_handler.h>
	79	#include <irq_handler.h>
	80	#include <vmem.h>
[412]	81	#include <pmem.h>
[258]	82	#include <utils.h>
	83	#include <elf-types.h>
	84
	85	// for boot FAT initialisation
	86	#include <fat32.h>
	87
	88	#include <mips32_registers.h>
	89	#include <stdarg.h>
	90
[263]	91	#if !defined(X_SIZE)
[359]	92	# error: The X_SIZE value must be defined in the 'hard_config.h' file !
[258]	93	#endif
	94
[263]	95	#if !defined(Y_SIZE)
[359]	96	# error: The Y_SIZE value must be defined in the 'hard_config.h' file !
[263]	97	#endif
	98
	99	#if !defined(X_WIDTH)
[359]	100	# error: The X_WIDTH value must be defined in the 'hard_config.h' file !
[263]	101	#endif
	102
	103	#if !defined(Y_WIDTH)
[359]	104	# error: The Y_WIDTH value must be defined in the 'hard_config.h' file !
[263]	105	#endif
	106
[321]	107	#if !defined(SEG_BOOT_MAPPING_BASE)
[359]	108	# error: The SEG_BOOT_MAPPING_BASE value must be defined in the hard_config.h file !
[321]	109	#endif
	110
[359]	111	#if !defined(NB_PROCS_MAX)
	112	# error: The NB_PROCS_MAX value must be defined in the 'hard_config.h' file !
[321]	113	#endif
	114
[359]	115	#if !defined(GIET_NB_VSPACE_MAX)
	116	# error: The GIET_NB_VSPACE_MAX value must be defined in the 'giet_config.h' file !
[321]	117	#endif
	118
[359]	119	#if !defined(GIET_ELF_BUFFER_SIZE)
	120	# error: The GIET_ELF_BUFFER_SIZE value must be defined in the giet_config.h file !
[258]	121	#endif
	122
	123	////////////////////////////////////////////////////////////////////////////
	124	// Global variables for boot code
	125	////////////////////////////////////////////////////////////////////////////
	126
[366]	127	extern void boot_entry();
	128
[412]	129	// FAT internal representation for boot code
	130	__attribute__((section (".bootdata")))
	131	fat32_fs_t fat __attribute__((aligned(512)));
[258]	132
[412]	133	// Temporaty buffer used to load one complete .elf file
[258]	134	__attribute__((section (".bootdata")))
[412]	135	char boot_elf_buffer[GIET_ELF_BUFFER_SIZE] __attribute__((aligned(512)));
[258]	136
[412]	137	// Physical memory allocators array (one per cluster)
[258]	138	__attribute__((section (".bootdata")))
[412]	139	pmem_alloc_t boot_pmem_alloc[X_SIZE][Y_SIZE];
[258]	140
[412]	141	// Schedulers virtual base addresses array (one per processor)
[258]	142	__attribute__((section (".bootdata")))
[412]	143	static_scheduler_t* _schedulers[X_SIZE][Y_SIZE][NB_PROCS_MAX];
[258]	144
[412]	145	// Page tables virtual base addresses array (one per vspace)
[258]	146	__attribute__((section (".bootdata")))
[412]	147	unsigned int _ptabs_vaddr[GIET_NB_VSPACE_MAX][X_SIZE][Y_SIZE];
[258]	148
[412]	149	// Page tables physical base addresses (one per vspace and per cluster)
[263]	150	__attribute__((section (".bootdata")))
[412]	151	paddr_t _ptabs_paddr[GIET_NB_VSPACE_MAX][X_SIZE][Y_SIZE];
[258]	152
[412]	153	// Page tables pt2 allocators (one per vspace and per cluster)
[359]	154	__attribute__((section (".bootdata")))
[412]	155	unsigned int _ptabs_next_pt2[GIET_NB_VSPACE_MAX][X_SIZE][Y_SIZE];
[263]	156
[412]	157	// Page tables max_pt2 (same value for all page tables)
	158	__attribute__((section (".bootdata")))
	159	unsigned int _ptabs_max_pt2;
	160
[258]	161	/////////////////////////////////////////////////////////////////////
	162	// This function checks consistence beween the mapping_info data
	163	// structure (soft), and the giet_config file (hard).
	164	/////////////////////////////////////////////////////////////////////
	165	void boot_mapping_check()
	166	{
[321]	167	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	168
	169	// checking mapping availability
	170	if (header->signature != IN_MAPPING_SIGNATURE)
	171	{
	172	_puts("\n[BOOT ERROR] Illegal mapping signature: ");
	173	_putx(header->signature);
	174	_puts("\n");
	175	_exit();
	176	}
[263]	177
[258]	178	// checking number of clusters
[263]	179	if ( (header->x_size != X_SIZE) \|\|
	180	(header->y_size != Y_SIZE) \|\|
	181	(header->x_width != X_WIDTH) \|\|
	182	(header->y_width != Y_WIDTH) )
[258]	183	{
[263]	184	_puts("\n[BOOT ERROR] Incoherent X_SIZE or Y_SIZE ");
	185	_puts("\n - In hard_config: X_SIZE = ");
	186	_putd( X_SIZE );
	187	_puts(" / Y_SIZE = ");
	188	_putd( Y_SIZE );
	189	_puts(" / X_WIDTH = ");
	190	_putd( X_WIDTH );
	191	_puts(" / Y_WIDTH = ");
	192	_putd( Y_WIDTH );
	193	_puts("\n - In mapping_info: x_size = ");
	194	_putd( header->x_size );
	195	_puts(" / y_size = ");
	196	_putd( header->y_size );
	197	_puts(" / x_width = ");
	198	_putd( header->x_width );
	199	_puts(" / y_width = ");
	200	_putd( header->y_width );
[258]	201	_puts("\n");
	202	_exit();
	203	}
	204	// checking number of virtual spaces
	205	if (header->vspaces > GIET_NB_VSPACE_MAX)
	206	{
	207	_puts("\n[BOOT ERROR] : number of vspaces > GIET_NB_VSPACE_MAX\n");
	208	_puts("\n");
	209	_exit();
	210	}
	211
	212	#if BOOT_DEBUG_MAPPING
[263]	213	_puts("\n - x_size = ");
	214	_putd( header->x_size );
	215	_puts("\n - y_size = ");
	216	_putd( header->y_size );
[258]	217	_puts("\n - procs = ");
	218	_putd( header->procs );
	219	_puts("\n - periphs = ");
	220	_putd( header->periphs );
	221	_puts("\n - vspaces = ");
	222	_putd( header->vspaces );
	223	_puts("\n - tasks = ");
	224	_putd( header->tasks );
	225	_puts("\n");
	226	_puts("\n - size of header = ");
	227	_putd( MAPPING_HEADER_SIZE );
	228	_puts("\n - size of cluster = ");
	229	_putd( MAPPING_CLUSTER_SIZE );
	230	_puts("\n - size of pseg = ");
	231	_putd( MAPPING_PSEG_SIZE );
	232	_puts("\n - size of proc = ");
	233	_putd( MAPPING_PROC_SIZE );
	234	_puts("\n - size of vspace = ");
	235	_putd( MAPPING_VSPACE_SIZE );
	236	_puts("\n - size of vseg = ");
	237	_putd( MAPPING_VSEG_SIZE );
	238	_puts("\n - size of vobj = ");
	239	_putd( MAPPING_VOBJ_SIZE );
	240	_puts("\n - size of task = ");
	241	_putd( MAPPING_TASK_SIZE );
	242	_puts("\n");
	243
[263]	244	unsigned int cluster_id;
[258]	245	mapping_cluster_t * cluster = _get_cluster_base(header);
[263]	246	for( cluster_id = 0; cluster_id < X_SIZE*Y_SIZE ; cluster_id++)
[258]	247	{
[263]	248	_puts("\n - cluster[");
	249	_putd( cluster[cluster_id].x );
	250	_puts(",");
	251	_putd( cluster[cluster_id].y );
	252	_puts("]\n procs = ");
	253	_putd( cluster[cluster_id].procs );
	254	_puts("\n psegs = ");
	255	_putd( cluster[cluster_id].psegs );
	256	_puts("\n periphs = ");
	257	_putd( cluster[cluster_id].periphs );
	258	_puts("\n");
[258]	259	}
	260	#endif
	261
	262	} // end boot_mapping_check()
	263
	264	//////////////////////////////////////////////////////////////////////////////
[412]	265	// This function registers a new PTE1 in the page table defined
	266	// by the vspace_id argument, and the (x,y) coordinates.
	267	// It updates only the first level PT1.
[258]	268	//////////////////////////////////////////////////////////////////////////////
[412]	269	void boot_add_pte1( unsigned int vspace_id,
	270	unsigned int x,
	271	unsigned int y,
	272	unsigned int vpn, // 20 bits right-justified
	273	unsigned int flags, // 10 bits left-justified
	274	unsigned int ppn ) // 28 bits right-justified
[258]	275	{
[412]	276	// compute index in PT1
	277	unsigned int ix1 = vpn >> 9; // 11 bits for ix1
[258]	278
[412]	279	// get page table physical base address
	280	paddr_t pt1_pbase = _ptabs_paddr[vspace_id][x][y];
	281
	282	// check pt1_base
	283	if ( pt1_pbase == 0 )
[258]	284	{
[412]	285	_puts("\n[BOOT ERROR] in boot_add_pte1() : illegal pbase address for PTAB[");
	286	_putd( vspace_id );
	287	_puts(",");
	288	_putd( x );
	289	_puts(",");
	290	_putd( y );
	291	_puts("]\n");
[258]	292	_exit();
	293	}
	294
[412]	295	// compute pte1 : 2 bits V T / 8 bits flags / 3 bits RSVD / 19 bits bppi
	296	unsigned int pte1 = PTE_V \|
	297	(flags & 0x3FC00000) \|
	298	((ppn>>9) & 0x0007FFFF);
[258]	299
[412]	300	// write pte1 in PT1
	301	_physical_write( pt1_pbase + 4*ix1, pte1 );
	302
	303	#if (BOOT_DEBUG_PT > 1)
	304	_puts(" - PTE1 in PTAB[");
	305	_putd( vspace_id );
	306	_puts(",");
	307	_putd( x );
	308	_puts(",");
	309	_putd( y );
	310	_puts("] : vpn = ");
	311	_putx( vpn );
	312	_puts(" / ppn = ");
	313	_putx( ppn );
	314	_puts(" / flags = ");
	315	_putx( flags );
	316	_puts("\n");
	317	#endif
	318
	319	} // end boot_add_pte1()
	320
[258]	321	//////////////////////////////////////////////////////////////////////////////
[412]	322	// This function registers a new PTE2 in the page table defined
[347]	323	// by the vspace_id argument, and the (x,y) coordinates.
[412]	324	// It updates both the first level PT1 and the second level PT2.
[258]	325	// As the set of PT2s is implemented as a fixed size array (no dynamic
	326	// allocation), this function checks a possible overflow of the PT2 array.
	327	//////////////////////////////////////////////////////////////////////////////
[412]	328	void boot_add_pte2( unsigned int vspace_id,
	329	unsigned int x,
	330	unsigned int y,
	331	unsigned int vpn, // 20 bits right-justified
	332	unsigned int flags, // 10 bits left-justified
	333	unsigned int ppn ) // 28 bits right-justified
[258]	334	{
	335	unsigned int ix1;
	336	unsigned int ix2;
[347]	337	paddr_t pt2_pbase; // PT2 physical base address
[412]	338	paddr_t pte2_paddr; // PTE2 physical address
[258]	339	unsigned int pt2_id; // PT2 index
	340	unsigned int ptd; // PTD : entry in PT1
	341
[412]	342	ix1 = vpn >> 9; // 11 bits for ix1
	343	ix2 = vpn & 0x1FF; // 9 bits for ix2
[258]	344
[347]	345	// get page table physical base address and size
	346	paddr_t pt1_pbase = _ptabs_paddr[vspace_id][x][y];
[258]	347
[412]	348	// check pt1_base
	349	if ( pt1_pbase == 0 )
[258]	350	{
[412]	351	_puts("\n[BOOT ERROR] in boot_add_pte2() : PTAB[");
	352	_putd( vspace_id );
	353	_puts(",");
	354	_putd( x );
	355	_puts(",");
	356	_putd( y );
	357	_puts("] undefined\n");
[258]	358	_exit();
	359	}
	360
	361	// get ptd in PT1
	362	ptd = _physical_read(pt1_pbase + 4 * ix1);
	363
[347]	364	if ((ptd & PTE_V) == 0) // undefined PTD: compute PT2 base address,
[258]	365	// and set a new PTD in PT1
	366	{
[347]	367	pt2_id = _ptabs_next_pt2[vspace_id][x][y];
[412]	368	if (pt2_id == _ptabs_max_pt2)
[258]	369	{
[412]	370	_puts("\n[BOOT ERROR] in boot_add_pte2() : PTAB[");
	371	_putd( vspace_id );
	372	_puts(",");
	373	_putd( x );
	374	_puts(",");
	375	_putd( y );
	376	_puts("] contains not enough PT2s\n");
[258]	377	_exit();
	378	}
[347]	379
	380	pt2_pbase = pt1_pbase + PT1_SIZE + PT2_SIZE * pt2_id;
	381	ptd = PTE_V \| PTE_T \| (unsigned int) (pt2_pbase >> 12);
[412]	382	_physical_write( pt1_pbase + 4*ix1, ptd);
[347]	383	_ptabs_next_pt2[vspace_id][x][y] = pt2_id + 1;
[258]	384	}
	385	else // valid PTD: compute PT2 base address
	386	{
	387	pt2_pbase = ((paddr_t)(ptd & 0x0FFFFFFF)) << 12;
	388	}
	389
	390	// set PTE in PT2 : flags & PPN in two 32 bits words
[412]	391	pte2_paddr = pt2_pbase + 8 * ix2;
	392	_physical_write(pte2_paddr , (PTE_V \|flags) );
	393	_physical_write(pte2_paddr + 4 , ppn);
[258]	394
[412]	395	#if (BOOT_DEBUG_PT > 1)
	396	_puts(" - PTE2 in PTAB[");
	397	_putd( vspace_id );
	398	_puts(",");
	399	_putd( x );
	400	_puts(",");
	401	_putd( y );
	402	_puts("] : vpn = ");
	403	_putx( vpn );
	404	_puts(" / ppn = ");
	405	_putx( ppn );
	406	_puts(" / flags = ");
	407	_putx( flags );
[347]	408	_puts("\n");
[258]	409	#endif
	410
[412]	411	} // end boot_add_pte2()
[258]	412
[412]	413	////////////////////////////////////////////////////////////////////////////////////
[258]	414	// Align the value of paddr or vaddr to the required alignement,
	415	// defined by alignPow2 == L2(alignement).
[412]	416	////////////////////////////////////////////////////////////////////////////////////
[258]	417	paddr_t paddr_align_to(paddr_t paddr, unsigned int alignPow2)
	418	{
	419	paddr_t mask = (1 << alignPow2) - 1;
	420	return ((paddr + mask) & ~mask);
	421	}
	422
	423	unsigned int vaddr_align_to(unsigned int vaddr, unsigned int alignPow2)
	424	{
	425	unsigned int mask = (1 << alignPow2) - 1;
	426	return ((vaddr + mask) & ~mask);
	427	}
	428
[412]	429	/////////////////////////////////////////////////////////////////////////////////////
	430	// This function map a vseg identified by the vseg pointer.
	431	//
	432	// A given vseg can be mapped in Big Physical Pages (BPP: 2 Mbytes) or in a
	433	// Small Physical Pages (SPP: 4 Kbytes), depending on the "big" attribute of vseg,
	434	// with the following rules:
	435	// - SPP : There is only one vseg in a small physical page, but a single vseg
	436	// can cover several contiguous small physical pages.
	437	// - BPP : It can exist several vsegs in a single big physical page, and a single
	438	// vseg can cover several contiguous big physical pages.
	439	//
	440	// 1) First step: it computes the vseg length, and register it in vseg->length field.
	441	// It computes - for each vobj - the actual vbase address, taking into
	442	// account the alignment constraints and register it in vobj->vbase field.
	443	//
	444	// 2) Second step: it allocates the required number of physical pages,
	445	// computes the physical base address (if the vseg is not identity mapping),
	446	// and register it in the vseg pbase field.
	447	// Only the 4 vsegs used by the boot code and the peripheral vsegs
	448	// can be identity mapping: The first big physical page in cluster[0,0]
	449	// is reserved for the 4 boot vsegs.
	450	//
	451	// 3) Third step (only for vseg that have the VOBJ_TYPE_PTAB): all page tables
	452	// associated to the various vspaces must be packed in the same vseg.
	453	// We divide the vseg in M sub-segments, and compute the vbase and pbase
	454	// addresses for each page table, and register it in the _ptabs_paddr
	455	// and _ptabs_vaddr arrays.
	456	//
	457	/////////////////////////////////////////////////////////////////////////////////////
	458	void boot_vseg_map( mapping_vseg_t* vseg )
[258]	459	{
[412]	460	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	461	mapping_vobj_t* vobj = _get_vobj_base(header);
	462	mapping_cluster_t* cluster = _get_cluster_base(header);
	463	mapping_pseg_t* pseg = _get_pseg_base(header);
[258]	464
[412]	465	// compute destination cluster pointer & coordinates
	466	pseg = pseg + vseg->psegid;
	467	cluster = cluster + pseg->clusterid;
	468	unsigned int x_dest = cluster->x;
	469	unsigned int y_dest = cluster->y;
[258]	470
[412]	471	// compute the first vobj global index
	472	unsigned int vobj_id = vseg->vobj_offset;
	473
	474	// compute the "big" vseg attribute
	475	unsigned int big = vseg->big;
[258]	476
[412]	477	// compute the "is_ram" vseg attribute
	478	unsigned int is_ram;
	479	if ( pseg->type == PSEG_TYPE_RAM ) is_ram = 1;
	480	else is_ram = 0;
[258]	481
[412]	482	// compute the "is_ptab" attribute
	483	unsigned int is_ptab;
	484	if ( vobj[vobj_id].type == VOBJ_TYPE_PTAB ) is_ptab = 1;
	485	else is_ptab = 0;
[258]	486
[412]	487	//////////// First step : compute vseg length and vobj(s) vbase
[258]	488
[412]	489	unsigned int vobj_vbase = vseg->vbase; // min vbase for first vobj
[258]	490
[412]	491	for ( vobj_id = vseg->vobj_offset ;
	492	vobj_id < (vseg->vobj_offset + vseg->vobjs) ;
	493	vobj_id++ )
[258]	494	{
[412]	495	// compute and register vobj vbase
	496	vobj[vobj_id].vbase = vaddr_align_to( vobj_vbase, vobj[vobj_id].align );
	497
	498	// compute min vbase for next vobj
	499	vobj_vbase = vobj[vobj_id].vbase + vobj[vobj_id].length;
[258]	500	}
	501
[412]	502	// compute and register vseg length (multiple of 4 Kbytes)
	503	vseg->length = vaddr_align_to( vobj_vbase - vseg->vbase, 12 );
	504
	505	//////////// Second step : compute ppn and npages
	506	//////////// - if identity mapping : ppn <= vpn
	507	//////////// - if vseg is periph : ppn <= pseg.base >> 12
	508	//////////// - if vseg is ram : ppn <= physical memory allocator
[258]	509
[412]	510	unsigned int ppn; // first physical page index ( 28 bits = \|x\|y\|bppi\|sppi\| )
	511	unsigned int vpn; // first virtual page index ( 20 bits = \|ix1\|ix2\| )
	512	unsigned int vpn_max; // last virtual page index ( 20 bits = \|ix1\|ix2\| )
[258]	513
[412]	514	vpn = vseg->vbase >> 12;
	515	vpn_max = (vseg->vbase + vseg->length - 1) >> 12;
[258]	516
[412]	517	// compute npages
	518	unsigned int npages; // number of required (big or small) pages
	519	if ( big == 0 ) npages = vpn_max - vpn + 1; // number of small pages
	520	else npages = (vpn_max>>9) - (vpn>>9) + 1; // number of big pages
	521
	522	// compute ppn
	523	if ( vseg->ident ) // identity mapping
[258]	524	{
[412]	525	ppn = vpn;
[258]	526	}
[412]	527	else // not identity mapping
[258]	528	{
[412]	529	if ( is_ram ) // RAM : physical memory allocation required
[258]	530	{
[412]	531	// compute pointer on physical memory allocator in dest cluster
	532	pmem_alloc_t* palloc = &boot_pmem_alloc[x_dest][y_dest];
[258]	533
[412]	534	if ( big == 0 ) // SPP : small physical pages
	535	{
	536	// allocate contiguous small physical pages
	537	ppn = _get_small_ppn( palloc, npages );
	538	}
	539	else // BPP : big physical pages
	540	{
	541
	542	// one big page can be shared by several vsegs
	543	// we must chek if BPP already allocated
	544	if ( is_ptab ) // It cannot be mapped
	545	{
	546	ppn = _get_big_ppn( palloc, npages );
	547	}
	548	else // It can be mapped
	549	{
	550	unsigned int ix1 = vpn >> 9; // 11 bits
	551	paddr_t paddr = _ptabs_paddr[0][x_dest][y_dest] + (ix1<<2);
	552	unsigned int pte1 = _physical_read( paddr );
	553	if ( (pte1 & PTE_V) == 0 ) // BPP not allocated yet
	554	{
	555	// allocate contiguous big physical pages
	556	ppn = _get_big_ppn( palloc, npages );
	557	}
	558	else // BPP already allocated
	559	{
	560	ppn = ((pte1 << 9) & 0x0FFFFE00);
	561	}
	562	}
	563	ppn = ppn \| (vpn & 0x1FF);
	564	}
[258]	565	}
[412]	566	else // PERI : no memory allocation required
[258]	567	{
[412]	568	ppn = pseg->base >> 12;
[258]	569	}
	570	}
	571
[412]	572	// update vseg.pbase field and update vsegs chaining
	573	vseg->pbase = ((paddr_t)ppn) << 12;
	574	vseg->next_vseg = pseg->next_vseg;
	575	pseg->next_vseg = (unsigned int)vseg;
[258]	576
[412]	577
	578	//////////// Third step : (only if the vseg is a page table)
	579	//////////// - compute the physical & virtual base address for each vspace
	580	//////////// by dividing the vseg in several sub-segments.
	581	//////////// - register it in _ptabs_vaddr & _ptabs_paddr arrays,
	582	//////////// and initialize the max_pt2 and next_pt2 allocators.
	583
	584	if ( is_ptab )
[258]	585	{
[412]	586	unsigned int vs; // vspace index
	587	unsigned int nspaces; // number of vspaces
	588	unsigned int nsp; // number of small pages for one PTAB
	589	unsigned int offset; // address offset for current PTAB
[258]	590
[412]	591	nspaces = header->vspaces;
	592	offset = 0;
[258]	593
[412]	594	// each PTAB must be aligned on a 8 Kbytes boundary
	595	nsp = ( vseg->length << 12 ) / nspaces;
	596	if ( (nsp & 0x1) == 0x1 ) nsp = nsp - 1;
[258]	597
[412]	598	// compute max_pt2
	599	_ptabs_max_pt2 = ((nsp<<12) - PT1_SIZE) / PT2_SIZE;
	600
	601	for ( vs = 0 ; vs < nspaces ; vs++ )
[258]	602	{
[412]	603	offset += nsp;
	604	_ptabs_vaddr [vs][x_dest][y_dest] = (vpn + offset) << 12;
	605	_ptabs_paddr [vs][x_dest][y_dest] = ((paddr_t)(ppn + offset)) << 12;
	606	_ptabs_next_pt2[vs][x_dest][y_dest] = 0;
[258]	607	}
	608	}
	609
[412]	610	#if BOOT_DEBUG_PT
	611	_puts("[BOOT DEBUG] ");
	612	_puts( vseg->name );
	613	_puts(" in cluster[");
	614	_putd( x_dest );
	615	_puts(",");
	616	_putd( y_dest );
	617	_puts("] : vbase = ");
	618	_putx( vseg->vbase );
	619	_puts(" / length = ");
	620	_putx( vseg->length );
	621	if ( big ) _puts(" / BIG / npages = ");
	622	else _puts(" / SMALL / npages = ");
	623	_putd( npages );
	624	_puts(" / pbase = ");
	625	_putl( vseg->pbase );
	626	_puts("\n");
	627	#endif
	628
	629	} // end boot_vseg_map()
	630
	631	/////////////////////////////////////////////////////////////////////////////////////
	632	// For the vseg defined by the vseg pointer, this function register all PTEs
	633	// in one or several page tables.
	634	// It is a global vseg (system vseg) if (vspace_id == 0xFFFFFFFF).
	635	// The number of involved PTABs depends on the "local" and "global" attributes:
	636	// - PTEs are replicated in all vspaces for a global vseg.
	637	// - PTEs are replicated in all clusters for a non local vseg.
	638	/////////////////////////////////////////////////////////////////////////////////////
	639	void boot_vseg_pte_init( mapping_vseg_t* vseg,
	640	unsigned int vspace_id )
	641	{
	642	// compute the "global" vseg attribute and actual vspace index
	643	unsigned int global;
	644	unsigned int vsid;
	645	if ( vspace_id == 0xFFFFFFFF )
[258]	646	{
[412]	647	global = 1;
	648	vsid = 0;
[258]	649	}
[412]	650	else
[258]	651	{
[412]	652	global = 0;
	653	vsid = vspace_id;
[258]	654	}
	655
[412]	656	// compute the "local" and "big" attributes
	657	unsigned int local = vseg->local;
	658	unsigned int big = vseg->big;
[258]	659
[412]	660	// compute vseg flags
	661	// The three flags (Local, Remote and Dirty) are set to 1 to reduce
	662	// latency of TLB miss (L/R) and write (D): Avoid hardware update
	663	// mechanism for these flags because GIET_VM does use these flags.
	664	unsigned int flags = 0;
	665	if (vseg->mode & C_MODE_MASK) flags \|= PTE_C;
	666	if (vseg->mode & X_MODE_MASK) flags \|= PTE_X;
	667	if (vseg->mode & W_MODE_MASK) flags \|= PTE_W;
	668	if (vseg->mode & U_MODE_MASK) flags \|= PTE_U;
	669	if ( global ) flags \|= PTE_G;
	670	flags \|= PTE_L;
	671	flags \|= PTE_R;
	672	flags \|= PTE_D;
[258]	673
[412]	674	// compute VPN, PPN and number of pages (big or small)
	675	unsigned int vpn = vseg->vbase >> 12;
	676	unsigned int vpn_max = (vseg->vbase + vseg->length - 1) >> 12;
	677	unsigned int ppn = (unsigned int)(vseg->pbase >> 12);
	678	unsigned int npages;
	679	if ( big == 0 ) npages = vpn_max - vpn + 1;
	680	else npages = (vpn_max>>9) - (vpn>>9) + 1;
	681
	682	// compute destination cluster coordinates
	683	unsigned int x_dest;
	684	unsigned int y_dest;
	685	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	686	mapping_cluster_t* cluster = _get_cluster_base(header);
	687	mapping_pseg_t* pseg = _get_pseg_base(header);
	688	pseg = pseg + vseg->psegid;
	689	cluster = cluster + pseg->clusterid;
	690	x_dest = cluster->x;
	691	y_dest = cluster->y;
	692
	693	unsigned int p; // iterator for physical page index
	694	unsigned int x; // iterator for cluster x coordinate
	695	unsigned int y; // iterator for cluster y coordinate
	696	unsigned int v; // iterator for vspace index
	697
	698	// loop on PTEs
	699	for ( p = 0 ; p < npages ; p++ )
	700	{
	701	if ( (local != 0) && (global == 0) ) // one cluster / one vspace
[258]	702	{
[412]	703	if ( big ) // big pages => PTE1s
	704	{
	705	boot_add_pte1( vsid,
	706	x_dest,
	707	y_dest,
	708	vpn + (p<<9),
	709	flags,
	710	ppn + (p<<9) );
	711	}
	712	else // small pages => PTE2s
	713	{
	714	boot_add_pte2( vsid,
	715	x_dest,
	716	y_dest,
	717	vpn + p,
	718	flags,
	719	ppn + p );
	720	}
[258]	721	}
[412]	722	else if ( (local == 0) && (global == 0) ) // all clusters / one vspace
[258]	723	{
[412]	724	for ( x = 0 ; x < X_SIZE ; x++ )
[258]	725	{
[412]	726	for ( y = 0 ; y < Y_SIZE ; y++ )
	727	{
	728	if ( big ) // big pages => PTE1s
	729	{
	730	boot_add_pte1( vsid,
	731	x,
	732	y,
	733	vpn + (p<<9),
	734	flags,
	735	ppn + (p<<9) );
	736	}
	737	else // small pages => PTE2s
	738	{
	739	boot_add_pte2( vsid,
	740	x,
	741	y,
	742	vpn + p,
	743	flags,
	744	ppn + p );
	745	}
	746	}
[258]	747	}
[412]	748	}
	749	else if ( (local != 0) && (global != 0) ) // one cluster / all vspaces
	750	{
	751	for ( v = 0 ; v < header->vspaces ; v++ )
[258]	752	{
[412]	753	if ( big ) // big pages => PTE1s
	754	{
	755	boot_add_pte1( v,
	756	x_dest,
	757	y_dest,
	758	vpn + (p<<9),
	759	flags,
	760	ppn + (p<<9) );
	761	}
	762	else // small pages = PTE2s
	763	{
	764	boot_add_pte2( v,
	765	x_dest,
	766	y_dest,
	767	vpn + p,
	768	flags,
	769	ppn + p );
	770	}
[258]	771	}
[412]	772	}
	773	else if ( (local == 0) && (global != 0) ) // all clusters / all vspaces
	774	{
	775	for ( x = 0 ; x < X_SIZE ; x++ )
[258]	776	{
[412]	777	for ( y = 0 ; y < Y_SIZE ; y++ )
	778	{
	779	for ( v = 0 ; v < header->vspaces ; v++ )
	780	{
	781	if ( big ) // big pages => PTE1s
	782	{
	783	boot_add_pte1( v,
	784	x,
	785	y,
	786	vpn + (p<<9),
	787	flags,
	788	ppn + (p<<9) );
	789	}
	790	else // small pages -> PTE2s
	791	{
	792	boot_add_pte2( v,
	793	x,
	794	y,
	795	vpn + p,
	796	flags,
	797	ppn + p );
	798	}
	799	}
	800	}
[258]	801	}
	802	}
[412]	803	} // end for pages
	804	} // end boot_vseg_pte_init()
[258]	805
[412]	806	///////////////////////////////////////////////////////////////////////////////
	807	// This function initialises the page tables for all vspaces defined
	808	// in the mapping_info data structure.
	809	// For each vspace, there is one page table per cluster.
	810	// In each cluster all page tables for the different vspaces must be
	811	// packed in one vseg occupying one single BPP (Big Physical Page).
[258]	812	//
[412]	813	// For each vseg, the mapping is done in two steps:
	814	//
	815	// A) mapping : the boot_vseg_map() function allocates contiguous BPPs
	816	// or SPPs (if the vseg is not associated to a peripheral), and register
	817	// the physical base address in the vseg pbase field. It initialises the
	818	// _ptabs_vaddr and _ptabs_paddr arrays if the vseg is a PTAB.
	819	//
	820	// B) page table initialisation : the boot_vseg_pte_init() function initialise
	821	// the PTEs (both PTE1 and PTE2) in one or several page tables:
	822	// - PTEs are replicated in all vspaces for a global vseg.
	823	// - PTEs are replicated in all clusters for a non local vseg.
	824	//
	825	// We must handle vsegs in the following order
	826	// 1) all global vsegs containing a page table,
	827	// 2) all global vsegs occupying more than one BPP,
	828	// 3) all others global vsegs
	829	// 4) all private vsegs in user space.
	830	///////////////////////////////////////////////////////////////////////////////
	831	void _ptabs_init()
[258]	832	{
[412]	833	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	834	mapping_vspace_t* vspace = _get_vspace_base(header);
	835	mapping_vseg_t* vseg = _get_vseg_base(header);
	836	mapping_vobj_t* vobj = _get_vobj_base(header);
[258]	837
	838	unsigned int vspace_id;
	839	unsigned int vseg_id;
	840
	841	if (header->vspaces == 0 )
	842	{
[412]	843	_puts("\n[BOOT ERROR] in _ptabs_init() : mapping ");
[258]	844	_puts( header->name );
	845	_puts(" contains no vspace\n");
	846	_exit();
	847	}
	848
[412]	849	///////// Phase 1 : global vsegs containing a PTAB (two loops required)
	850
[258]	851	#if BOOT_DEBUG_PT
[412]	852	_puts("\n[BOOT DEBUG] map PTAB global vsegs\n");
[258]	853	#endif
	854
[412]	855	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	856	{
	857	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	858	if ( (vobj[vobj_id].type == VOBJ_TYPE_PTAB) )
	859	{
	860	boot_vseg_map( &vseg[vseg_id] );
	861	vseg[vseg_id].mapped = 1;
	862	}
	863	}
[258]	864
	865	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	866	{
[412]	867	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	868	if ( (vobj[vobj_id].type == VOBJ_TYPE_PTAB) )
	869	{
	870	boot_vseg_pte_init( &vseg[vseg_id], 0xFFFFFFFF );
	871	vseg[vseg_id].mapped = 1;
	872	}
[258]	873	}
	874
[412]	875	///////// Phase 2 : global vsegs occupying more than one BPP (one loop)
	876
	877	#if BOOT_DEBUG_PT
	878	_puts("\n[BOOT DEBUG] map all multi-BPP global vsegs\n");
	879	#endif
	880
[258]	881	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	882	{
[412]	883	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	884	if ( (vobj[vobj_id].length > 0x200000) &&
	885	(vseg[vseg_id].mapped == 0) )
	886	{
	887	boot_vseg_map( &vseg[vseg_id] );
	888	vseg[vseg_id].mapped = 1;
	889	boot_vseg_pte_init( &vseg[vseg_id], 0xFFFFFFFF );
	890	}
[258]	891	}
	892
[412]	893	///////// Phase 3 : all others global vsegs (one loop)
[347]	894
[412]	895	#if BOOT_DEBUG_PT
	896	_puts("\n[BOOT DEBUG] map all others global vsegs\n");
	897	#endif
	898
	899	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	900	{
	901	if ( vseg[vseg_id].mapped == 0 )
	902	{
	903	boot_vseg_map( &vseg[vseg_id] );
	904	vseg[vseg_id].mapped = 1;
	905	boot_vseg_pte_init( &vseg[vseg_id], 0xFFFFFFFF );
	906	}
	907	}
	908
	909	///////// Phase 4 : all private vsegs (two nested loops)
	910
[258]	911	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
	912	{
	913
	914	#if BOOT_DEBUG_PT
[412]	915	_puts("\n[BOOT DEBUG] map private vsegs for vspace ");
	916	_puts( vspace[vspace_id].name );
	917	_puts("\n");
[258]	918	#endif
	919
	920	for (vseg_id = vspace[vspace_id].vseg_offset;
	921	vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs);
	922	vseg_id++)
	923	{
[412]	924	boot_vseg_map( &vseg[vseg_id] );
	925	vseg[vseg_id].mapped = 1;
	926	boot_vseg_pte_init( &vseg[vseg_id], vspace_id );
[258]	927	}
	928	}
	929
[412]	930	#if (BOOT_DEBUG_PT > 1)
[309]	931	mapping_vseg_t* curr;
	932	mapping_pseg_t* pseg = _get_pseg_base(header);
	933	mapping_cluster_t* cluster = _get_cluster_base(header);
	934	unsigned int pseg_id;
[258]	935	for( pseg_id = 0 ; pseg_id < header->psegs ; pseg_id++ )
	936	{
[309]	937	unsigned int cluster_id = pseg[pseg_id].clusterid;
[412]	938	_puts("\n[BOOT DEBUG] vsegs mapped on pseg ");
[258]	939	_puts( pseg[pseg_id].name );
[309]	940	_puts(" in cluster[");
	941	_putd( cluster[cluster_id].x );
	942	_puts(",");
	943	_putd( cluster[cluster_id].y );
[412]	944	_puts("]\n");
[258]	945	for( curr = (mapping_vseg_t*)pseg[pseg_id].next_vseg ;
	946	curr != 0 ;
	947	curr = (mapping_vseg_t*)curr->next_vseg )
	948	{
	949	_puts(" - vseg ");
	950	_puts( curr->name );
	951	_puts(" : len = ");
	952	_putx( curr->length );
	953	_puts(" / vbase ");
[295]	954	_putx( curr->vbase );
[258]	955	_puts(" / pbase ");
	956	_putl( curr->pbase );
	957	_puts("\n");
	958	}
	959	}
	960	#endif
	961
[412]	962	} // end boot_ptabs_init()
[258]	963
	964	///////////////////////////////////////////////////////////////////////////////
	965	// This function initializes all private vobjs defined in the vspaces,
	966	// such as mwmr channels, barriers and locks, because these vobjs
	967	// are not known, and not initialized by the compiler.
	968	// The MMU is supposed to be activated...
	969	///////////////////////////////////////////////////////////////////////////////
	970	void boot_vobjs_init()
	971	{
[321]	972	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	973	mapping_vspace_t* vspace = _get_vspace_base(header);
	974	mapping_vobj_t* vobj = _get_vobj_base(header);
	975
	976	unsigned int vspace_id;
	977	unsigned int vobj_id;
	978
	979	// loop on the vspaces
	980	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
	981	{
	982
	983	#if BOOT_DEBUG_VOBJS
	984	_puts("\n[BOOT DEBUG] ****** vobjs initialisation in vspace ");
	985	_puts(vspace[vspace_id].name);
	986	_puts(" ******\n");
	987	#endif
	988
[347]	989	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[vspace_id][0][0] >> 13) );
[258]	990
	991	// loop on the vobjs
	992	for (vobj_id = vspace[vspace_id].vobj_offset;
	993	vobj_id < (vspace[vspace_id].vobj_offset + vspace[vspace_id].vobjs);
	994	vobj_id++)
	995	{
	996	switch (vobj[vobj_id].type)
	997	{
	998	case VOBJ_TYPE_MWMR: // storage capacity is (vobj.length/4 - 5) words
	999	{
[309]	1000	#if BOOT_DEBUG_VOBJS
	1001	_puts("MWMR : ");
	1002	_puts(vobj[vobj_id].name);
	1003	_puts(" / vaddr = ");
	1004	_putx(vobj[vobj_id].vaddr);
	1005	_puts(" / paddr = ");
	1006	_putl(vobj[vobj_id].paddr);
	1007	_puts(" / length = ");
	1008	_putx(vobj[vobj_id].length);
	1009	_puts("\n");
	1010	#endif
[412]	1011	mwmr_channel_t* mwmr = (mwmr_channel_t *) (vobj[vobj_id].vbase);
[258]	1012	mwmr->ptw = 0;
	1013	mwmr->ptr = 0;
	1014	mwmr->sts = 0;
	1015	mwmr->width = vobj[vobj_id].init;
	1016	mwmr->depth = (vobj[vobj_id].length >> 2) - 6;
	1017	mwmr->lock = 0;
	1018	#if BOOT_DEBUG_VOBJS
[309]	1019	_puts(" fifo depth = ");
[258]	1020	_putd(mwmr->depth);
	1021	_puts(" / width = ");
	1022	_putd(mwmr->width);
	1023	_puts("\n");
	1024	#endif
	1025	break;
	1026	}
	1027	case VOBJ_TYPE_ELF: // initialisation done by the loader
	1028	{
	1029	#if BOOT_DEBUG_VOBJS
	1030	_puts("ELF : ");
	1031	_puts(vobj[vobj_id].name);
[309]	1032	_puts(" / vaddr = ");
	1033	_putx(vobj[vobj_id].vaddr);
	1034	_puts(" / paddr = ");
	1035	_putl(vobj[vobj_id].paddr);
[258]	1036	_puts(" / length = ");
	1037	_putx(vobj[vobj_id].length);
	1038	_puts("\n");
	1039	#endif
	1040	break;
	1041	}
	1042	case VOBJ_TYPE_BLOB: // initialisation done by the loader
	1043	{
	1044	#if BOOT_DEBUG_VOBJS
[309]	1045	_puts("BLOB : ");
[258]	1046	_puts(vobj[vobj_id].name);
[309]	1047	_puts(" / vaddr = ");
	1048	_putx(vobj[vobj_id].vaddr);
	1049	_puts(" / paddr = ");
	1050	_putl(vobj[vobj_id].paddr);
[258]	1051	_puts(" / length = ");
	1052	_putx(vobj[vobj_id].length);
	1053	_puts("\n");
	1054	#endif
	1055	break;
	1056	}
	1057	case VOBJ_TYPE_BARRIER: // init is the number of participants
	1058	{
[309]	1059	#if BOOT_DEBUG_VOBJS
	1060	_puts("BARRIER : ");
	1061	_puts(vobj[vobj_id].name);
	1062	_puts(" / vaddr = ");
	1063	_putx(vobj[vobj_id].vaddr);
	1064	_puts(" / paddr = ");
	1065	_putl(vobj[vobj_id].paddr);
	1066	_puts(" / length = ");
	1067	_putx(vobj[vobj_id].length);
	1068	_puts("\n");
	1069	#endif
[412]	1070	giet_barrier_t* barrier = (giet_barrier_t *) (vobj[vobj_id].vbase);
[369]	1071	barrier->count = vobj[vobj_id].init;
	1072	barrier->ntasks = vobj[vobj_id].init;
	1073	barrier->sense = 0;
[258]	1074	#if BOOT_DEBUG_VOBJS
[309]	1075	_puts(" init_value = ");
[258]	1076	_putd(barrier->init);
	1077	_puts("\n");
	1078	#endif
	1079	break;
	1080	}
	1081	case VOBJ_TYPE_LOCK: // init value is "not taken"
	1082	{
	1083	#if BOOT_DEBUG_VOBJS
	1084	_puts("LOCK : ");
	1085	_puts(vobj[vobj_id].name);
[309]	1086	_puts(" / vaddr = ");
	1087	_putx(vobj[vobj_id].vaddr);
	1088	_puts(" / paddr = ");
	1089	_putl(vobj[vobj_id].paddr);
	1090	_puts(" / length = ");
	1091	_putx(vobj[vobj_id].length);
[258]	1092	_puts("\n");
	1093	#endif
[412]	1094	unsigned int* lock = (unsigned int *) (vobj[vobj_id].vbase);
[309]	1095	*lock = 0;
[258]	1096	break;
	1097	}
	1098	case VOBJ_TYPE_BUFFER: // nothing to initialise
	1099	{
	1100	#if BOOT_DEBUG_VOBJS
	1101	_puts("BUFFER : ");
	1102	_puts(vobj[vobj_id].name);
[309]	1103	_puts(" / vaddr = ");
	1104	_putx(vobj[vobj_id].vaddr);
[258]	1105	_puts(" / paddr = ");
	1106	_putl(vobj[vobj_id].paddr);
	1107	_puts(" / length = ");
	1108	_putx(vobj[vobj_id].length);
	1109	_puts("\n");
	1110	#endif
	1111	break;
	1112	}
	1113	case VOBJ_TYPE_MEMSPACE:
	1114	{
	1115	#if BOOT_DEBUG_VOBJS
	1116	_puts("MEMSPACE : ");
	1117	_puts(vobj[vobj_id].name);
	1118	_puts(" / vaddr = ");
	1119	_putx(vobj[vobj_id].vaddr);
[309]	1120	_puts(" / paddr = ");
	1121	_putl(vobj[vobj_id].paddr);
[258]	1122	_puts(" / length = ");
	1123	_putx(vobj[vobj_id].length);
[309]	1124	_puts("\n");
	1125	#endif
[412]	1126	giet_memspace_t* memspace = (giet_memspace_t *) vobj[vobj_id].vbase;
	1127	memspace->buffer = (void *) vobj[vobj_id].vbase + 8;
[309]	1128	memspace->size = vobj[vobj_id].length - 8;
	1129	#if BOOT_DEBUG_VOBJS
	1130	_puts(" buffer vbase = ");
[258]	1131	_putx((unsigned int)memspace->buffer);
	1132	_puts(" / size = ");
	1133	_putx(memspace->size);
	1134	_puts("\n");
	1135	#endif
	1136	break;
	1137	}
	1138	case VOBJ_TYPE_CONST:
	1139	{
	1140	#if BOOT_DEBUG_VOBJS
	1141	_puts("CONST : ");
	1142	_puts(vobj[vobj_id].name);
[309]	1143	_puts(" / vaddr = ");
	1144	_putx(vobj[vobj_id].vaddr);
	1145	_puts(" / paddr = ");
[258]	1146	_putl(vobj[vobj_id].paddr);
[309]	1147	_puts(" / length = ");
	1148	_putx(vobj[vobj_id].length);
[258]	1149	_puts(" / init = ");
[309]	1150	_putx(vobj[vobj_id].init);
	1151	_puts("\n");
	1152	#endif
[412]	1153	unsigned int* addr = (unsigned int *) vobj[vobj_id].vbase;
[309]	1154	*addr = vobj[vobj_id].init;
	1155
	1156	#if BOOT_DEBUG_VOBJS
	1157	_puts(" init = ");
[258]	1158	_putx(*addr);
	1159	_puts("\n");
	1160	#endif
	1161	break;
	1162	}
	1163	default:
	1164	{
[412]	1165	_puts("\n[BOOT ERROR] in boot_vobjs_init() : Illegal vobj type ");
	1166	_putd( vobj[vobj_id].type );
	1167	_puts(" in vspace ");
	1168	_puts( vspace[vspace_id].name );
[258]	1169	_puts("\n");
	1170	_exit();
	1171	}
	1172	} // end switch type
[412]	1173	} // end loop on vobjs
	1174	} // end loop on vspaces
[258]	1175	} // end boot_vobjs_init()
	1176
	1177	///////////////////////////////////////////////////////////////////////////////
	1178	// This function returns in the vbase and length buffers the virtual base
	1179	// address and the length of the segment allocated to the schedulers array
	1180	// in the cluster defined by the clusterid argument.
	1181	///////////////////////////////////////////////////////////////////////////////
	1182	void boot_get_sched_vaddr( unsigned int cluster_id,
	1183	unsigned int* vbase,
	1184	unsigned int* length )
	1185	{
[321]	1186	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1187	mapping_vobj_t* vobj = _get_vobj_base(header);
	1188	mapping_vseg_t* vseg = _get_vseg_base(header);
	1189	mapping_pseg_t* pseg = _get_pseg_base(header);
	1190
	1191	unsigned int vseg_id;
	1192	unsigned int found = 0;
	1193
	1194	for ( vseg_id = 0 ; (vseg_id < header->vsegs) && (found == 0) ; vseg_id++ )
	1195	{
	1196	if ( (vobj[vseg[vseg_id].vobj_offset].type == VOBJ_TYPE_SCHED) &&
[263]	1197	(pseg[vseg[vseg_id].psegid].clusterid == cluster_id ) )
[258]	1198	{
	1199	*vbase = vseg[vseg_id].vbase;
	1200	*length = vobj[vseg[vseg_id].vobj_offset].length;
	1201	found = 1;
	1202	}
	1203	}
	1204	if ( found == 0 )
	1205	{
[263]	1206	mapping_cluster_t* cluster = _get_cluster_base(header);
	1207	_puts("\n[BOOT ERROR] No vobj of type SCHED in cluster [");
	1208	_putd( cluster[cluster_id].x );
	1209	_puts(",");
	1210	_putd( cluster[cluster_id].y );
	1211	_puts("]\n");
[258]	1212	_exit();
	1213	}
	1214	} // end boot_get_sched_vaddr()
	1215
	1216	////////////////////////////////////////////////////////////////////////////////////
	1217	// This function initialises all processors schedulers.
	1218	// This is done by processor 0, and the MMU must be activated.
[412]	1219	// - In Step 1, it initialises the _schedulers[x][y][l] pointers array, and scan
	1220	// the processors for a first initialisation of the schedulers:
	1221	// idle_task context, and HWI / SWI / PTI vectors.
[321]	1222	// - In Step 2, it scan all tasks in all vspaces to complete the tasks contexts,
	1223	// initialisation as specified in the mapping_info data structure.
[258]	1224	////////////////////////////////////////////////////////////////////////////////////
	1225	void boot_schedulers_init()
	1226	{
[321]	1227	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1228	mapping_cluster_t* cluster = _get_cluster_base(header);
	1229	mapping_vspace_t* vspace = _get_vspace_base(header);
	1230	mapping_task_t* task = _get_task_base(header);
	1231	mapping_vobj_t* vobj = _get_vobj_base(header);
[295]	1232	mapping_periph_t* periph = _get_periph_base(header);
[258]	1233	mapping_irq_t* irq = _get_irq_base(header);
	1234
	1235	unsigned int cluster_id; // cluster index in mapping_info
[295]	1236	unsigned int periph_id; // peripheral index in mapping_info
[258]	1237	unsigned int irq_id; // irq index in mapping_info
	1238	unsigned int vspace_id; // vspace index in mapping_info
	1239	unsigned int task_id; // task index in mapping_info
[321]	1240	unsigned int vobj_id; // vobj index in mapping_info
[258]	1241
[321]	1242	unsigned int lpid; // local processor index (for several loops)
	1243
	1244	// TTY, NIC, CMA, HBA, user timer, and WTI channel allocators to user tasks:
[258]	1245	// - TTY[0] is reserved for the kernel
	1246	// - In all clusters the first NB_PROCS_MAX timers
	1247	// are reserved for the kernel (context switch)
[321]	1248	unsigned int alloc_tty_channel = 1; // global
	1249	unsigned int alloc_nic_channel = 0; // global
	1250	unsigned int alloc_cma_channel = 0; // global
	1251	unsigned int alloc_hba_channel = 0; // global
	1252	unsigned int alloc_tim_channel[X_SIZE*Y_SIZE]; // one per cluster
[258]	1253
[321]	1254	// WTI allocators to processors
	1255	// In all clusters, first NB_PROCS_MAX WTIs are for WAKUP
	1256	unsigned int alloc_wti_channel[X_SIZE*Y_SIZE]; // one per cluster
[258]	1257
[321]	1258	// pointers on the XCU and PIC peripherals
	1259	mapping_periph_t* xcu = NULL;
	1260	mapping_periph_t* pic = NULL;
	1261
[412]	1262	unsigned int sched_vbase; // schedulers array vbase address in a cluster
	1263	unsigned int sched_length; // schedulers array length
	1264	static_scheduler_t* psched; // pointer on processor scheduler
[321]	1265
[258]	1266	/////////////////////////////////////////////////////////////////////////
	1267	// Step 1 : loop on the clusters and on the processors
	1268	// to initialize the schedulers[] array of pointers,
[412]	1269	// idle task context and interrupt vectors.
[258]	1270	// Implementation note:
[347]	1271	// We need to use both (proc_id) to scan the mapping info structure,
	1272	// and (x,y,lpid) to access the schedulers array.
[258]	1273
[263]	1274	for (cluster_id = 0 ; cluster_id < X_SIZE*Y_SIZE ; cluster_id++)
[258]	1275	{
[263]	1276	unsigned int x = cluster[cluster_id].x;
	1277	unsigned int y = cluster[cluster_id].y;
[258]	1278
	1279	#if BOOT_DEBUG_SCHED
[263]	1280	_puts("\n[BOOT DEBUG] Initialise schedulers in cluster[");
	1281	_putd( x );
	1282	_puts(",");
	1283	_putd( y );
	1284	_puts("]\n");
[258]	1285	#endif
	1286	alloc_tim_channel[cluster_id] = NB_PROCS_MAX;
[321]	1287	alloc_wti_channel[cluster_id] = NB_PROCS_MAX;
[258]	1288
	1289	// checking processors number
[295]	1290	if ( cluster[cluster_id].procs > NB_PROCS_MAX )
[258]	1291	{
[263]	1292	_puts("\n[BOOT ERROR] Too much processors in cluster[");
	1293	_putd( x );
	1294	_puts(",");
	1295	_putd( y );
	1296	_puts("]\n");
[258]	1297	_exit();
	1298	}
	1299
[295]	1300	// no schedulers initialisation if nprocs == 0
	1301	if ( cluster[cluster_id].procs > 0 )
[258]	1302	{
[412]	1303	// get scheduler array virtual base address in cluster[cluster_id]
[295]	1304	boot_get_sched_vaddr( cluster_id, &sched_vbase, &sched_length );
[258]	1305
[412]	1306	if ( sched_length < (cluster[cluster_id].procs<<13) ) // 8 Kbytes per scheduler
[295]	1307	{
	1308	_puts("\n[BOOT ERROR] Schedulers segment too small in cluster[");
	1309	_putd( x );
	1310	_puts(",");
	1311	_putd( y );
	1312	_puts("]\n");
	1313	_exit();
	1314	}
[263]	1315
[321]	1316	// scan peripherals to find the ICU/XCU and the PIC component
	1317
	1318	xcu = NULL;
[295]	1319	for ( periph_id = cluster[cluster_id].periph_offset ;
	1320	periph_id < cluster[cluster_id].periph_offset + cluster[cluster_id].periphs;
	1321	periph_id++ )
	1322	{
	1323	if( (periph[periph_id].type == PERIPH_TYPE_XCU) \|\|
	1324	(periph[periph_id].type == PERIPH_TYPE_ICU) )
	1325	{
[321]	1326	xcu = &periph[periph_id];
	1327
	1328	if ( xcu->arg < cluster[cluster_id].procs )
	1329	{
	1330	_puts("\n[BOOT ERROR] Not enough inputs for XCU[");
	1331	_putd( x );
	1332	_puts(",");
	1333	_putd( y );
	1334	_puts("]\n");
	1335	_exit();
	1336	}
[295]	1337	}
[321]	1338	if( periph[periph_id].type == PERIPH_TYPE_PIC )
	1339	{
	1340	pic = &periph[periph_id];
	1341	}
[295]	1342	}
[321]	1343	if ( xcu == NULL )
[295]	1344	{
	1345	_puts("\n[BOOT ERROR] No ICU / XCU component in cluster[");
	1346	_putd( x );
	1347	_puts(",");
	1348	_putd( y );
	1349	_puts("]\n");
	1350	_exit();
	1351	}
	1352
[412]	1353	// loop on processors for schedulers default values
[321]	1354	// initialisation, including WTI and PTI vectors
[295]	1355	for ( lpid = 0 ; lpid < cluster[cluster_id].procs ; lpid++ )
	1356	{
[412]	1357	// pointer on processor scheduler
	1358	psched = (static_scheduler_t*)(sched_vbase + (lpid<<13));
[295]	1359
[412]	1360	// initialise the schedulers pointers array
	1361	_schedulers[x][y][lpid] = psched;
	1362
[258]	1363	#if BOOT_DEBUG_SCHED
[412]	1364	unsigned int sched_vbase = (unsigned int)_schedulers[x][y][lpid];
	1365	unsigned int sched_ppn;
	1366	unsigned int sched_flags;
	1367	paddr_t sched_pbase;
	1368
	1369	page_table_t* ptab = (page_table_t*)(_ptabs_vaddr[0][x][y]);
	1370	_v2p_translate( ptab, sched_vbase>>12, &sched_ppn, &sched_flags );
	1371	sched_pbase = ((paddr_t)sched_ppn)<<12;
	1372
[295]	1373	_puts("\nProc[");
[263]	1374	_putd( x );
[295]	1375	_puts(",");
[263]	1376	_putd( y );
[295]	1377	_puts(",");
[263]	1378	_putd( lpid );
[412]	1379	_puts("] : scheduler vbase = ");
	1380	_putx( sched_vbase );
	1381	_puts(" : scheduler pbase = ");
	1382	_putl( sched_pbase );
[258]	1383	_puts("\n");
	1384	#endif
[295]	1385	// initialise the "tasks" and "current" variables default values
[412]	1386	psched->tasks = 0;
	1387	psched->current = IDLE_TASK_INDEX;
[258]	1388
[321]	1389	// default values for HWI / PTI / SWI vectors (valid bit = 0)
[295]	1390	unsigned int slot;
	1391	for (slot = 0; slot < 32; slot++)
	1392	{
[412]	1393	psched->hwi_vector[slot] = 0;
	1394	psched->pti_vector[slot] = 0;
	1395	psched->wti_vector[slot] = 0;
[295]	1396	}
[258]	1397
[321]	1398	// WTI[lpid] <= ISR_WAKUP / PTI[lpid] <= ISR_TICK
[412]	1399	psched->wti_vector[lpid] = ISR_WAKUP \| 0x80000000;
	1400	psched->pti_vector[lpid] = ISR_TICK \| 0x80000000;
[321]	1401
[295]	1402	// initializes the idle_task context in scheduler:
	1403	// - the SR slot is 0xFF03 because this task run in kernel mode.
	1404	// - it uses the page table of vspace[0]
	1405	// - it uses the kernel TTY terminal
[392]	1406	// - slots containing addresses (SP, RA, EPC)
	1407	// must be initialised by kernel_init()
[258]	1408
[412]	1409	psched->context[IDLE_TASK_INDEX][CTX_CR_ID] = 0;
	1410	psched->context[IDLE_TASK_INDEX][CTX_SR_ID] = 0xFF03;
	1411	psched->context[IDLE_TASK_INDEX][CTX_PTPR_ID] = _ptabs_paddr[0][x][y]>>13;
	1412	psched->context[IDLE_TASK_INDEX][CTX_PTAB_ID] = _ptabs_vaddr[0][x][y];
	1413	psched->context[IDLE_TASK_INDEX][CTX_TTY_ID] = 0;
	1414	psched->context[IDLE_TASK_INDEX][CTX_LTID_ID] = IDLE_TASK_INDEX;
	1415	psched->context[IDLE_TASK_INDEX][CTX_VSID_ID] = 0;
	1416	psched->context[IDLE_TASK_INDEX][CTX_RUN_ID] = 1;
	1417
[321]	1418	} // end for processors
[258]	1419
[321]	1420	// scan HWIs connected to local XCU
	1421	// for round-robin allocation to processors
	1422	lpid = 0;
	1423	for ( irq_id = xcu->irq_offset ;
	1424	irq_id < xcu->irq_offset + xcu->irqs ;
[295]	1425	irq_id++ )
[258]	1426	{
[321]	1427	unsigned int type = irq[irq_id].srctype;
	1428	unsigned int srcid = irq[irq_id].srcid;
	1429	unsigned int isr = irq[irq_id].isr & 0xFFFF;
	1430	unsigned int channel = irq[irq_id].channel << 16;
	1431
	1432	if ( (type != IRQ_TYPE_HWI) \|\| (srcid > 31) )
[295]	1433	{
[321]	1434	_puts("\n[BOOT ERROR] Bad IRQ in XCU of cluster[");
[295]	1435	_putd( x );
	1436	_puts(",");
	1437	_putd( y );
	1438	_puts("]\n");
	1439	_exit();
	1440	}
[258]	1441
[412]	1442	_schedulers[x][y][lpid]->hwi_vector[srcid] = isr \| channel \| 0x80000000;
[321]	1443	lpid = (lpid + 1) % cluster[cluster_id].procs;
[258]	1444
[321]	1445	} // end for irqs
	1446	} // end if nprocs > 0
	1447	} // end for clusters
[258]	1448
[321]	1449	// If there is an external PIC component, we scan HWIs connected to PIC
	1450	// for Round Robin allocation (as WTI) to processors.
	1451	// We allocate one WTI per processor, starting from proc[0,0,0],
	1452	// and we increment (cluster_id, lpid) as required.
	1453	if ( pic != NULL )
	1454	{
	1455	unsigned int cluster_id = 0; // index in clusters array
	1456	unsigned int lpid = 0; // processor local index
	1457
	1458	// scan IRQS defined in PIC
	1459	for ( irq_id = pic->irq_offset ;
	1460	irq_id < pic->irq_offset + pic->irqs ;
	1461	irq_id++ )
	1462	{
	1463	// compute next values for (cluster_id,lpid)
	1464	// if no more procesor available in current cluster
	1465	unsigned int overflow = 0;
	1466	while ( (lpid >= cluster[cluster_id].procs) \|\|
	1467	(alloc_wti_channel[cluster_id] >= xcu->arg) )
	1468	{
	1469	overflow++;
	1470	cluster_id = (cluster_id + 1) % (X_SIZE*Y_SIZE);
	1471	lpid = 0;
	1472
	1473	// overflow detection
	1474	if ( overflow > (X_SIZEY_SIZENB_PROCS_MAX*32) )
	1475	{
	1476	_puts("\n[BOOT ERROR] Not enough processors for external IRQs\n");
	1477	_exit();
	1478	}
	1479	}
	1480
	1481	unsigned int type = irq[irq_id].srctype;
	1482	unsigned int srcid = irq[irq_id].srcid;
	1483	unsigned int isr = irq[irq_id].isr & 0xFFFF;
	1484	unsigned int channel = irq[irq_id].channel << 16;
	1485
	1486	if ( (type != IRQ_TYPE_HWI) \|\| (srcid > 31) )
	1487	{
	1488	_puts("\n[BOOT ERROR] Bad IRQ in PIC component\n");
	1489	_exit();
	1490	}
	1491
	1492	// get scheduler[cluster_id] address
	1493	unsigned int x = cluster[cluster_id].x;
	1494	unsigned int y = cluster[cluster_id].y;
	1495	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[412]	1496	psched = _schedulers[x][y][lpid];
[321]	1497
	1498	// update WTI vector for scheduler[cluster_id][lpid]
[412]	1499	unsigned int index = alloc_wti_channel[cluster_id];
	1500	psched->wti_vector[index] = isr \| channel \| 0x80000000;
[321]	1501	alloc_wti_channel[cluster_id] = index + 1;
[412]	1502	lpid = lpid + 1;
[321]	1503
	1504	// update IRQ fields in mapping for PIC initialisation
	1505	irq[irq_id].dest_id = index;
	1506	irq[irq_id].dest_xy = cluster_xy;
	1507
	1508	} // end for IRQs
	1509	} // end if PIC
	1510
[258]	1511	#if BOOT_DEBUG_SCHED
[321]	1512	for ( cluster_id = 0 ; cluster_id < (X_SIZE*Y_SIZE) ; cluster_id++ )
	1513	{
	1514	unsigned int x = cluster[cluster_id].x;
	1515	unsigned int y = cluster[cluster_id].y;
	1516	unsigned int slot;
	1517	unsigned int entry;
	1518	for ( lpid = 0 ; lpid < cluster[cluster_id].procs ; lpid++ )
	1519	{
[412]	1520	psched = _schedulers[x][y][lpid];
	1521
[321]	1522	_puts("\n*** IRQS for proc[");
	1523	_putd( x );
	1524	_puts(",");
	1525	_putd( y );
[329]	1526	_puts(",");
[321]	1527	_putd( lpid );
	1528	_puts("]\n");
	1529	for ( slot = 0 ; slot < 32 ; slot++ )
	1530	{
[412]	1531	entry = psched->hwi_vector[slot];
[321]	1532	if ( entry & 0x80000000 )
	1533	{
	1534	_puts(" - HWI ");
	1535	_putd( slot );
	1536	_puts(" / isrtype = ");
	1537	_putd( entry & 0xFFFF );
	1538	_puts(" / channel = ");
	1539	_putd( (entry >> 16) & 0x7FFF );
	1540	_puts("\n");
	1541	}
	1542	}
	1543	for ( slot = 0 ; slot < 32 ; slot++ )
	1544	{
[412]	1545	entry = psched->wti_vector[slot];
[321]	1546	if ( entry & 0x80000000 )
	1547	{
	1548	_puts(" - WTI ");
	1549	_putd( slot );
	1550	_puts(" / isrtype = ");
	1551	_putd( entry & 0xFFFF );
	1552	_puts(" / channel = ");
	1553	_putd( (entry >> 16) & 0x7FFF );
	1554	_puts("\n");
	1555	}
	1556	}
	1557	for ( slot = 0 ; slot < 32 ; slot++ )
	1558	{
[412]	1559	entry = psched->pti_vector[slot];
[321]	1560	if ( entry & 0x80000000 )
	1561	{
	1562	_puts(" - PTI ");
	1563	_putd( slot );
	1564	_puts(" / isrtype = ");
	1565	_putd( entry & 0xFFFF );
	1566	_puts(" / channel = ");
	1567	_putd( (entry >> 16) & 0x7FFF );
	1568	_puts("\n");
	1569	}
	1570	}
	1571	}
	1572	}
[258]	1573	#endif
	1574
	1575	///////////////////////////////////////////////////////////////////
[295]	1576	// Step 2 : loop on the vspaces and the tasks to complete
	1577	// the schedulers and task contexts initialisation.
[258]	1578
	1579	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
	1580	{
	1581	// We must set the PTPR depending on the vspace, because the start_vector
	1582	// and the stack address are defined in virtual space.
[347]	1583	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[vspace_id][0][0] >> 13) );
[258]	1584
[412]	1585	// loop on the tasks in vspace (task_id is the global index in mapping)
[258]	1586	for (task_id = vspace[vspace_id].task_offset;
	1587	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
	1588	task_id++)
	1589	{
[295]	1590	// compute the cluster coordinates & local processor index
[263]	1591	unsigned int x = cluster[task[task_id].clusterid].x;
	1592	unsigned int y = cluster[task[task_id].clusterid].y;
	1593	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[295]	1594	unsigned int lpid = task[task_id].proclocid;
[263]	1595
[258]	1596	#if BOOT_DEBUG_SCHED
	1597	_puts("\n[BOOT DEBUG] Initialise context for task ");
	1598	_puts( task[task_id].name );
	1599	_puts(" in vspace ");
	1600	_puts( vspace[vspace_id].name );
[309]	1601	_puts("\n");
[258]	1602	#endif
	1603	// compute gpid (global processor index) and scheduler base address
[295]	1604	unsigned int gpid = cluster_xy * NB_PROCS_MAX + lpid;
[347]	1605	psched = _schedulers[x][y][lpid];
[258]	1606
	1607	// ctx_sr : value required before an eret instruction
	1608	unsigned int ctx_sr = 0x0000FF13;
	1609
	1610	// ctx_ptpr : page table physical base address (shifted by 13 bit)
[347]	1611	unsigned int ctx_ptpr = (unsigned int)(_ptabs_paddr[vspace_id][x][y] >> 13);
[258]	1612
	1613	// ctx_ptab : page_table virtual base address
[412]	1614	unsigned int ctx_ptab = _ptabs_vaddr[vspace_id][x][y];
[258]	1615
	1616	// ctx_tty : TTY terminal global index provided by the global allocator
[295]	1617	// Each user terminal is a private ressource: the number of
	1618	// requested terminal cannot be larger than NB_TTY_CHANNELS.
[258]	1619	unsigned int ctx_tty = 0xFFFFFFFF;
	1620	if (task[task_id].use_tty)
	1621	{
	1622	if (alloc_tty_channel >= NB_TTY_CHANNELS)
	1623	{
[295]	1624	_puts("\n[BOOT ERROR] TTY channel index too large for task ");
[258]	1625	_puts(task[task_id].name);
	1626	_puts(" in vspace ");
	1627	_puts(vspace[vspace_id].name);
	1628	_puts("\n");
	1629	_exit();
	1630	}
	1631	ctx_tty = alloc_tty_channel;
[295]	1632	alloc_tty_channel++;
	1633	}
	1634
[258]	1635	// ctx_nic : NIC channel global index provided by the global allocator
[295]	1636	// Each channel is a private ressource: the number of
	1637	// requested channels cannot be larger than NB_NIC_CHANNELS.
[258]	1638	unsigned int ctx_nic = 0xFFFFFFFF;
	1639	if (task[task_id].use_nic)
	1640	{
	1641	if (alloc_nic_channel >= NB_NIC_CHANNELS)
	1642	{
	1643	_puts("\n[BOOT ERROR] NIC channel index too large for task ");
	1644	_puts(task[task_id].name);
	1645	_puts(" in vspace ");
	1646	_puts(vspace[vspace_id].name);
	1647	_puts("\n");
	1648	_exit();
	1649	}
	1650	ctx_nic = alloc_nic_channel;
	1651	alloc_nic_channel++;
	1652	}
[295]	1653
[258]	1654	// ctx_cma : CMA channel global index provided by the global allocator
[295]	1655	// Each channel is a private ressource: the number of
	1656	// requested channels cannot be larger than NB_NIC_CHANNELS.
[258]	1657	unsigned int ctx_cma = 0xFFFFFFFF;
	1658	if (task[task_id].use_cma)
	1659	{
	1660	if (alloc_cma_channel >= NB_CMA_CHANNELS)
	1661	{
	1662	_puts("\n[BOOT ERROR] CMA channel index too large for task ");
	1663	_puts(task[task_id].name);
	1664	_puts(" in vspace ");
	1665	_puts(vspace[vspace_id].name);
	1666	_puts("\n");
	1667	_exit();
	1668	}
	1669	ctx_cma = alloc_cma_channel;
	1670	alloc_cma_channel++;
	1671	}
[295]	1672
[258]	1673	// ctx_hba : HBA channel global index provided by the global allocator
[295]	1674	// Each channel is a private ressource: the number of
	1675	// requested channels cannot be larger than NB_NIC_CHANNELS.
[258]	1676	unsigned int ctx_hba = 0xFFFFFFFF;
	1677	if (task[task_id].use_hba)
	1678	{
[295]	1679	if (alloc_hba_channel >= NB_IOC_CHANNELS)
[258]	1680	{
	1681	_puts("\n[BOOT ERROR] IOC channel index too large for task ");
	1682	_puts(task[task_id].name);
	1683	_puts(" in vspace ");
	1684	_puts(vspace[vspace_id].name);
	1685	_puts("\n");
	1686	_exit();
	1687	}
	1688	ctx_hba = alloc_hba_channel;
	1689	alloc_hba_channel++;
	1690	}
[295]	1691	// ctx_tim : TIMER local channel index provided by the cluster allocator
	1692	// Each timer is a private ressource
[258]	1693	unsigned int ctx_tim = 0xFFFFFFFF;
	1694	if (task[task_id].use_tim)
	1695	{
	1696	unsigned int cluster_id = task[task_id].clusterid;
	1697
	1698	if ( alloc_tim_channel[cluster_id] >= NB_TIM_CHANNELS )
	1699	{
	1700	_puts("\n[BOOT ERROR] local TIMER index too large for task ");
	1701	_puts(task[task_id].name);
	1702	_puts(" in vspace ");
	1703	_puts(vspace[vspace_id].name);
	1704	_puts("\n");
	1705	_exit();
	1706	}
[295]	1707	ctx_tim = alloc_tim_channel[cluster_id];
	1708	alloc_tim_channel[cluster_id]++;
[258]	1709	}
	1710	// ctx_epc : Get the virtual address of the memory location containing
	1711	// the task entry point : the start_vector is stored by GCC in the seg_data
	1712	// segment and we must wait the .elf loading to get the entry point value...
[321]	1713	vobj_id = vspace[vspace_id].start_vobj_id;
[412]	1714	unsigned int ctx_epc = vobj[vobj_id].vbase + (task[task_id].startid)*4;
[258]	1715
	1716	// ctx_sp : Get the vobj containing the stack
[321]	1717	vobj_id = task[task_id].stack_vobj_id;
[412]	1718	unsigned int ctx_sp = vobj[vobj_id].vbase + vobj[vobj_id].length;
[258]	1719
	1720	// get local task index in scheduler
	1721	unsigned int ltid = psched->tasks;
	1722
[267]	1723	// get vspace thread index
	1724	unsigned int thread_id = task[task_id].trdid;
	1725
[258]	1726	if (ltid >= IDLE_TASK_INDEX)
	1727	{
	1728	_puts("\n[BOOT ERROR] in boot_schedulers_init() : ");
	1729	_putd( ltid );
	1730	_puts(" tasks allocated to processor ");
	1731	_putd( gpid );
	1732	_puts(" / max is ");
	1733	_putd( IDLE_TASK_INDEX );
	1734	_puts("\n");
	1735	_exit();
	1736	}
	1737
	1738	// update the "tasks" and "current" fields in scheduler:
	1739	// the first task to execute is task 0 as soon as there is at least
	1740	// one task allocated to processor.
	1741	psched->tasks = ltid + 1;
	1742	psched->current = 0;
	1743
	1744	// initializes the task context in scheduler
[293]	1745	psched->context[ltid][CTX_CR_ID] = 0;
[258]	1746	psched->context[ltid][CTX_SR_ID] = ctx_sr;
	1747	psched->context[ltid][CTX_SP_ID] = ctx_sp;
	1748	psched->context[ltid][CTX_EPC_ID] = ctx_epc;
	1749	psched->context[ltid][CTX_PTPR_ID] = ctx_ptpr;
	1750	psched->context[ltid][CTX_TTY_ID] = ctx_tty;
	1751	psched->context[ltid][CTX_CMA_ID] = ctx_cma;
	1752	psched->context[ltid][CTX_HBA_ID] = ctx_hba;
	1753	psched->context[ltid][CTX_NIC_ID] = ctx_nic;
	1754	psched->context[ltid][CTX_TIM_ID] = ctx_tim;
	1755	psched->context[ltid][CTX_PTAB_ID] = ctx_ptab;
	1756	psched->context[ltid][CTX_LTID_ID] = ltid;
	1757	psched->context[ltid][CTX_GTID_ID] = task_id;
[267]	1758	psched->context[ltid][CTX_TRDID_ID] = thread_id;
[258]	1759	psched->context[ltid][CTX_VSID_ID] = vspace_id;
	1760	psched->context[ltid][CTX_RUN_ID] = 1;
	1761
	1762	#if BOOT_DEBUG_SCHED
	1763	_puts("\nTask ");
	1764	_putd( task_id );
[295]	1765	_puts(" allocated to processor[");
[309]	1766	_putd( x );
[295]	1767	_puts(",");
[309]	1768	_putd( y );
[295]	1769	_puts(",");
[309]	1770	_putd( lpid );
[295]	1771	_puts("]\n - ctx[LTID] = ");
[258]	1772	_putd( psched->context[ltid][CTX_LTID_ID] );
	1773	_puts("\n - ctx[SR] = ");
	1774	_putx( psched->context[ltid][CTX_SR_ID] );
	1775	_puts("\n - ctx[SP] = ");
	1776	_putx( psched->context[ltid][CTX_SP_ID] );
	1777	_puts("\n - ctx[EPC] = ");
	1778	_putx( psched->context[ltid][CTX_EPC_ID] );
	1779	_puts("\n - ctx[PTPR] = ");
	1780	_putx( psched->context[ltid][CTX_PTPR_ID] );
	1781	_puts("\n - ctx[TTY] = ");
[295]	1782	_putx( psched->context[ltid][CTX_TTY_ID] );
[258]	1783	_puts("\n - ctx[NIC] = ");
[295]	1784	_putx( psched->context[ltid][CTX_NIC_ID] );
[258]	1785	_puts("\n - ctx[CMA] = ");
[295]	1786	_putx( psched->context[ltid][CTX_CMA_ID] );
[258]	1787	_puts("\n - ctx[IOC] = ");
[295]	1788	_putx( psched->context[ltid][CTX_HBA_ID] );
[258]	1789	_puts("\n - ctx[TIM] = ");
[295]	1790	_putx( psched->context[ltid][CTX_TIM_ID] );
[258]	1791	_puts("\n - ctx[PTAB] = ");
	1792	_putx( psched->context[ltid][CTX_PTAB_ID] );
	1793	_puts("\n - ctx[GTID] = ");
[295]	1794	_putx( psched->context[ltid][CTX_GTID_ID] );
[258]	1795	_puts("\n - ctx[VSID] = ");
[295]	1796	_putx( psched->context[ltid][CTX_VSID_ID] );
[267]	1797	_puts("\n - ctx[TRDID] = ");
[295]	1798	_putx( psched->context[ltid][CTX_TRDID_ID] );
[258]	1799	_puts("\n");
	1800	#endif
	1801
	1802	} // end loop on tasks
	1803	} // end loop on vspaces
[412]	1804	} // end boot_schedulers_init()
[258]	1805
	1806	//////////////////////////////////////////////////////////////////////////////////
	1807	// This function loads the map.bin file from block device.
	1808	//////////////////////////////////////////////////////////////////////////////////
	1809	void boot_mapping_init()
	1810	{
[347]	1811	// desactivates IOC interrupt
[289]	1812	_ioc_init( 0 );
[258]	1813
[347]	1814	// open file "map.bin"
[295]	1815	int fd_id = _fat_open( IOC_BOOT_MODE,
[258]	1816	"map.bin",
	1817	0 ); // no creation
	1818	if ( fd_id == -1 )
	1819	{
	1820	_puts("\n[BOOT ERROR] : map.bin file not found \n");
	1821	_exit();
	1822	}
	1823
	1824	#if BOOT_DEBUG_MAPPING
	1825	_puts("\n[BOOT] map.bin file successfully open at cycle ");
	1826	_putd(_get_proctime());
	1827	_puts("\n");
	1828	#endif
	1829
[412]	1830	// get "map.bin" file size (from fat) and check it
[258]	1831	unsigned int size = fat.fd[fd_id].file_size;
[347]	1832
	1833	if ( size > SEG_BOOT_MAPPING_SIZE )
	1834	{
	1835	_puts("\n[BOOT ERROR] : allocated segment too small for map.bin file\n");
	1836	_exit();
	1837	}
	1838
	1839	// load "map.bin" file into buffer
[258]	1840	unsigned int nblocks = size >> 9;
	1841	unsigned int offset = size & 0x1FF;
	1842	if ( offset ) nblocks++;
	1843
[295]	1844	unsigned int ok = _fat_read( IOC_BOOT_MODE,
[258]	1845	fd_id,
[321]	1846	(unsigned int*)SEG_BOOT_MAPPING_BASE,
[258]	1847	nblocks,
	1848	0 ); // offset
	1849	if ( ok == -1 )
	1850	{
	1851	_puts("\n[BOOT ERROR] : unable to load map.bin file \n");
	1852	_exit();
	1853	}
	1854	_fat_close( fd_id );
	1855
[347]	1856	// close file "map.bin"
[258]	1857	boot_mapping_check();
[347]	1858
[258]	1859	} // end boot_mapping_init()
	1860
	1861
[347]	1862	/////////////////////////////////////////////////////////////////////////////////////
	1863	// This function load all loadable segments for one .elf file, identified
	1864	// by the "pathname" argument. Some loadable segments can be copied in several
	1865	// clusters: same virtual address but different physical addresses.
	1866	// - It open the file.
[359]	1867	// - It loads the complete file in the dedicated boot_elf_buffer.
	1868	// - It copies each loadable segments at the virtual address defined in
	1869	// the .elf file, making several copies if the target vseg is not local.
[347]	1870	// - It closes the file.
[359]	1871	// This function is supposed to be executed by processor[0,0,0].
[347]	1872	// Note:
	1873	// We must use physical addresses to reach the destination buffers that
	1874	// can be located in remote clusters. We use either a _physical_memcpy(),
	1875	// or a _dma_physical_copy() if DMA is available.
	1876	//////////////////////////////////////////////////////////////////////////////////////
	1877	void load_one_elf_file( unsigned int is_kernel, // kernel file if non zero
[258]	1878	char* pathname,
[347]	1879	unsigned int vspace_id ) // to scan the proper vspace
[258]	1880	{
[347]	1881	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	1882	mapping_vspace_t * vspace = _get_vspace_base(header);
	1883	mapping_vseg_t * vseg = _get_vseg_base(header);
	1884	mapping_vobj_t * vobj = _get_vobj_base(header);
	1885
[258]	1886	unsigned int seg_id;
	1887
	1888	#if BOOT_DEBUG_ELF
	1889	_puts("\n[BOOT DEBUG] Start searching file ");
	1890	_puts( pathname );
	1891	_puts(" at cycle ");
	1892	_putd( _get_proctime() );
	1893	_puts("\n");
	1894	#endif
	1895
	1896	// open .elf file
[347]	1897	int fd_id = _fat_open( IOC_BOOT_MODE,
[258]	1898	pathname,
	1899	0 ); // no creation
	1900	if ( fd_id < 0 )
	1901	{
	1902	_puts("\n[BOOT ERROR] load_one_elf_file() : ");
	1903	_puts( pathname );
	1904	_puts(" not found\n");
	1905	_exit();
	1906	}
	1907
[359]	1908	// check buffer size versus file size
	1909	if ( fat.fd[fd_id].file_size > GIET_ELF_BUFFER_SIZE )
[258]	1910	{
	1911	_puts("\n[BOOT ERROR] load_one_elf_file() : ");
	1912	_puts( pathname );
[359]	1913	_puts(" exceeds the GIET_ELF_BUFFERSIZE defined in giet_config.h\n");
[258]	1914	_exit();
	1915	}
	1916
	1917	// compute number of sectors
	1918	unsigned int nbytes = fat.fd[fd_id].file_size;
	1919	unsigned int nsectors = nbytes>>9;
	1920	if( nbytes & 0x1FF) nsectors++;
	1921
[359]	1922	// load file in elf buffer
[347]	1923	if( _fat_read( IOC_BOOT_MODE,
[258]	1924	fd_id,
[359]	1925	boot_elf_buffer,
[258]	1926	nsectors,
	1927	0 ) != nsectors )
	1928	{
	1929	_puts("\n[BOOT ERROR] load_one_elf_file() : unexpected EOF for file ");
	1930	_puts( pathname );
	1931	_puts("\n");
	1932	_exit();
	1933	}
	1934
	1935	// Check ELF Magic Number in ELF header
[359]	1936	Elf32_Ehdr* elf_header_ptr = (Elf32_Ehdr*)boot_elf_buffer;
[258]	1937
	1938	if ( (elf_header_ptr->e_ident[EI_MAG0] != ELFMAG0) \|\|
	1939	(elf_header_ptr->e_ident[EI_MAG1] != ELFMAG1) \|\|
	1940	(elf_header_ptr->e_ident[EI_MAG2] != ELFMAG2) \|\|
	1941	(elf_header_ptr->e_ident[EI_MAG3] != ELFMAG3) )
	1942	{
	1943	_puts("\n[BOOT ERROR] load_elf() : file ");
	1944	_puts( pathname );
	1945	_puts(" does not use ELF format\n");
	1946	_exit();
	1947	}
	1948
	1949	// get program header table pointer
	1950	unsigned int pht_index = elf_header_ptr->e_phoff;
	1951	if( pht_index == 0 )
	1952	{
	1953	_puts("\n[BOOT ERROR] load_one_elf_file() : file ");
	1954	_puts( pathname );
	1955	_puts(" does not contain loadable segment\n");
	1956	_exit();
	1957	}
[359]	1958	Elf32_Phdr* elf_pht_ptr = (Elf32_Phdr*)(boot_elf_buffer + pht_index);
[258]	1959
	1960	// get number of segments
	1961	unsigned int nsegments = elf_header_ptr->e_phnum;
	1962
[347]	1963	_puts("\n[BOOT] File ");
	1964	_puts( pathname );
	1965	_puts(" loaded at cycle ");
	1966	_putd( _get_proctime() );
	1967	_puts("\n");
[258]	1968
[347]	1969	// Loop on loadable segments in the .elf file
[258]	1970	for (seg_id = 0 ; seg_id < nsegments ; seg_id++)
	1971	{
	1972	if(elf_pht_ptr[seg_id].p_type == PT_LOAD)
	1973	{
	1974	// Get segment attributes
	1975	unsigned int seg_vaddr = elf_pht_ptr[seg_id].p_vaddr;
	1976	unsigned int seg_offset = elf_pht_ptr[seg_id].p_offset;
	1977	unsigned int seg_filesz = elf_pht_ptr[seg_id].p_filesz;
	1978	unsigned int seg_memsz = elf_pht_ptr[seg_id].p_memsz;
	1979
[347]	1980	#if BOOT_DEBUG_ELF
	1981	_puts(" - segment ");
	1982	_putd( seg_id );
	1983	_puts(" / vaddr = ");
	1984	_putx( seg_vaddr );
	1985	_puts(" / file_size = ");
	1986	_putx( seg_filesz );
	1987	_puts("\n");
	1988	#endif
	1989
[258]	1990	if( seg_memsz < seg_filesz )
	1991	{
	1992	_puts("\n[BOOT ERROR] load_one_elf_file() : segment at vaddr = ");
	1993	_putx( seg_vaddr );
	1994	_puts(" in file ");
	1995	_puts( pathname );
[359]	1996	_puts(" has memsz < filesz \n");
[258]	1997	_exit();
	1998	}
	1999
	2000	// fill empty space with 0 as required
	2001	if( seg_memsz > seg_filesz )
	2002	{
	2003	unsigned int i;
[359]	2004	for( i = seg_filesz ; i < seg_memsz ; i++ ) boot_elf_buffer[i+seg_offset] = 0;
[258]	2005	}
	2006
[359]	2007	unsigned int src_vaddr = (unsigned int)boot_elf_buffer + seg_offset;
[258]	2008
[347]	2009	// search all vsegs matching the virtual address
	2010	unsigned int vseg_first;
	2011	unsigned int vseg_last;
	2012	unsigned int vseg_id;
	2013	unsigned int found = 0;
	2014	if ( is_kernel )
	2015	{
	2016	vseg_first = 0;
	2017	vseg_last = header->globals;
	2018	}
	2019	else
	2020	{
	2021	vseg_first = vspace[vspace_id].vseg_offset;
	2022	vseg_last = vseg_first + vspace[vspace_id].vsegs;
	2023	}
	2024
	2025	for ( vseg_id = vseg_first ; vseg_id < vseg_last ; vseg_id++ )
	2026	{
	2027	if ( seg_vaddr == vseg[vseg_id].vbase ) // matching
	2028	{
	2029	found = 1;
	2030
	2031	// get destination buffer physical address and size
	2032	paddr_t seg_paddr = vseg[vseg_id].pbase;
	2033	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	2034	unsigned int seg_size = vobj[vobj_id].length;
	2035
[258]	2036	#if BOOT_DEBUG_ELF
[347]	2037	_puts(" loaded into vseg ");
	2038	_puts( vseg[vseg_id].name );
	2039	_puts(" at paddr = ");
	2040	_putl( seg_paddr );
	2041	_puts(" (buffer size = ");
	2042	_putx( seg_size );
	2043	_puts(")\n");
[258]	2044	#endif
[347]	2045	// check vseg size
	2046	if ( seg_size < seg_filesz )
	2047	{
	2048	_puts("\n[BOOT ERROR] in load_one_elf_file()\n");
	2049	_puts("vseg ");
	2050	_puts( vseg[vseg_id].name );
	2051	_puts(" is to small for loadable segment ");
	2052	_putx( seg_vaddr );
	2053	_puts(" in file ");
	2054	_puts( pathname );
	2055	_puts(" \n");
	2056	_exit();
	2057	}
[258]	2058
[347]	2059	// copy the segment from boot buffer to destination buffer
	2060	// using DMA channel[0,0,0] if it is available.
	2061	if( NB_DMA_CHANNELS > 0 )
	2062	{
	2063	_dma_physical_copy( 0, // DMA in cluster[0,0]
	2064	0, // DMA channel 0
	2065	(paddr_t)seg_paddr, // destination paddr
	2066	(paddr_t)src_vaddr, // source paddr
	2067	seg_filesz ); // size
	2068	}
	2069	else
	2070	{
	2071	_physical_memcpy( (paddr_t)seg_paddr, // destination paddr
	2072	(paddr_t)src_vaddr, // source paddr
	2073	seg_filesz ); // size
	2074	}
	2075	}
	2076	} // end for vsegs in vspace
	2077
	2078	// check at least one matching vseg
	2079	if ( found == 0 )
[258]	2080	{
[347]	2081	_puts("\n[BOOT ERROR] in load_one_elf_file()\n");
	2082	_puts("vseg for loadable segment ");
	2083	_putx( seg_vaddr );
	2084	_puts(" in file ");
	2085	_puts( pathname );
	2086	_puts(" not found \n");
	2087	_exit();
[258]	2088	}
	2089	}
[347]	2090	} // end for loadable segments
[258]	2091
	2092	// close .elf file
	2093	_fat_close( fd_id );
	2094
	2095	} // end load_one_elf_file()
	2096
	2097
[347]	2098	/////i////////////////////////////////////////////////////////////////////////////////
[258]	2099	// This function uses the map.bin data structure to load the "kernel.elf" file
[347]	2100	// as well as the various "application.elf" files into memory.
	2101	// - The "preloader.elf" file is not loaded, because it has been burned in the ROM.
	2102	// - The "boot.elf" file is not loaded, because it has been loaded by the preloader.
[295]	2103	// This function scans all vobjs defined in the map.bin data structure to collect
[347]	2104	// all .elf files pathnames, and calls the load_one_elf_file() for each .elf file.
	2105	// As the code can be replicated in several vsegs, the same code can be copied
	2106	// in one or several clusters by the load_one_elf_file() function.
	2107	//////////////////////////////////////////////////////////////////////////////////////
[258]	2108	void boot_elf_load()
	2109	{
[321]	2110	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	2111	mapping_vspace_t* vspace = _get_vspace_base( header );
	2112	mapping_vobj_t* vobj = _get_vobj_base( header );
	2113	unsigned int vspace_id;
	2114	unsigned int vobj_id;
	2115	unsigned int found;
	2116
	2117	// Scan all vobjs corresponding to global vsegs,
	2118	// to find the pathname to the kernel.elf file
	2119	found = 0;
	2120	for( vobj_id = 0 ; vobj_id < header->globals ; vobj_id++ )
	2121	{
	2122	if(vobj[vobj_id].type == VOBJ_TYPE_ELF)
	2123	{
	2124	found = 1;
	2125	break;
	2126	}
	2127	}
	2128
	2129	// We need one kernel.elf file
	2130	if (found == 0)
	2131	{
	2132	_puts("[BOOT ERROR] boot_elf_load() : kernel.elf file not found\n");
	2133	_exit();
	2134	}
	2135
[347]	2136	// Load the kernel
	2137	load_one_elf_file( 1, // kernel file
	2138	vobj[vobj_id].binpath, // file pathname
[258]	2139	0 ); // vspace 0
	2140
[347]	2141	// loop on the vspaces, scanning all vobjs in the vspace,
[258]	2142	// to find the pathname of the .elf file associated to the vspace.
	2143	for( vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ )
	2144	{
	2145	// loop on the vobjs in vspace (vobj_id is the global index)
	2146	unsigned int found = 0;
	2147	for (vobj_id = vspace[vspace_id].vobj_offset;
	2148	vobj_id < (vspace[vspace_id].vobj_offset + vspace[vspace_id].vobjs);
	2149	vobj_id++)
	2150	{
	2151	if(vobj[vobj_id].type == VOBJ_TYPE_ELF)
	2152	{
	2153	found = 1;
	2154	break;
	2155	}
	2156	}
	2157
	2158	// We want one .elf file per vspace
	2159	if (found == 0)
	2160	{
	2161	_puts("[BOOT ERROR] boot_elf_load() : .elf file not found for vspace ");
	2162	_puts( vspace[vspace_id].name );
	2163	_puts("\n");
	2164	_exit();
	2165	}
	2166
[347]	2167	load_one_elf_file( 0, // not a kernel file
	2168	vobj[vobj_id].binpath, // file pathname
	2169	vspace_id ); // vspace index
[258]	2170
	2171	} // end for vspaces
	2172
	2173	} // end boot_elf_load()
	2174
	2175	////////////////////////////////////////////////////////////////////////////////
	2176	// This function intializes the periherals and coprocessors, as specified
	2177	// in the mapping_info file.
	2178	////////////////////////////////////////////////////////////////////////////////
	2179	void boot_peripherals_init()
	2180	{
[321]	2181	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	2182	mapping_cluster_t * cluster = _get_cluster_base(header);
	2183	mapping_periph_t * periph = _get_periph_base(header);
	2184	mapping_vobj_t * vobj = _get_vobj_base(header);
	2185	mapping_coproc_t * coproc = _get_coproc_base(header);
	2186	mapping_cp_port_t * cp_port = _get_cp_port_base(header);
[295]	2187	mapping_irq_t * irq = _get_irq_base(header);
[258]	2188
	2189	unsigned int cluster_id;
	2190	unsigned int periph_id;
	2191	unsigned int coproc_id;
	2192	unsigned int cp_port_id;
	2193	unsigned int channel_id;
	2194
[263]	2195	// loop on all physical clusters
	2196	for (cluster_id = 0; cluster_id < X_SIZE*Y_SIZE; cluster_id++)
[258]	2197	{
[263]	2198	// computes cluster coordinates
	2199	unsigned int x = cluster[cluster_id].x;
	2200	unsigned int y = cluster[cluster_id].y;
	2201	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[258]	2202
	2203	#if BOOT_DEBUG_PERI
[329]	2204	_puts("\n[BOOT DEBUG] Peripherals initialisation in cluster[");
[263]	2205	_putd( x );
	2206	_puts(",");
	2207	_putd( y );
[329]	2208	_puts("]\n");
[258]	2209	#endif
	2210
[263]	2211	// loop on peripherals
[258]	2212	for (periph_id = cluster[cluster_id].periph_offset;
	2213	periph_id < cluster[cluster_id].periph_offset +
	2214	cluster[cluster_id].periphs; periph_id++)
	2215	{
	2216	unsigned int type = periph[periph_id].type;
[347]	2217	unsigned int subtype = periph[periph_id].subtype;
[258]	2218	unsigned int channels = periph[periph_id].channels;
	2219
	2220	switch (type)
	2221	{
	2222	case PERIPH_TYPE_IOC: // vci_block_device component
	2223	{
[347]	2224	if ( subtype == PERIPH_SUBTYPE_BDV )
[289]	2225	{
[347]	2226	_bdv_lock.value = 0;
[258]	2227	#if BOOT_DEBUG_PERI
[347]	2228	_puts("- BDV : channels = ");
[263]	2229	_putd(channels);
	2230	_puts("\n");
[258]	2231	#endif
[347]	2232	}
	2233	else if ( subtype == PERIPH_SUBTYPE_HBA )
	2234	{
	2235	// TODO
	2236	}
	2237	else if ( subtype == PERIPH_SUBTYPE_SPI )
	2238	{
	2239	// TODO
	2240	}
[258]	2241	break;
	2242	}
[263]	2243	case PERIPH_TYPE_CMA: // vci_chbuf_dma component
	2244	{
	2245	for (channel_id = 0; channel_id < channels; channel_id++)
	2246	{
	2247	// TODO
	2248	}
	2249	#if BOOT_DEBUG_PERI
[309]	2250	_puts("- CMA : channels = ");
[263]	2251	_putd(channels);
	2252	_puts("\n");
	2253	#endif
	2254	break;
	2255	}
[258]	2256	case PERIPH_TYPE_NIC: // vci_multi_nic component
	2257	{
	2258	for (channel_id = 0; channel_id < channels; channel_id++)
	2259	{
	2260	// TODO
	2261	}
	2262	#if BOOT_DEBUG_PERI
[309]	2263	_puts("- NIC : channels = ");
[263]	2264	_putd(channels);
	2265	_puts("\n");
[258]	2266	#endif
	2267	break;
	2268	}
[299]	2269	case PERIPH_TYPE_TTY: // vci_multi_tty component
[263]	2270	{
[347]	2271	for (channel_id = 0; channel_id < channels; channel_id++)
	2272	{
	2273	_tty_lock[channel_id].value = 0;
	2274	_tty_rx_full[channel_id] = 0;
	2275	}
[263]	2276	#if BOOT_DEBUG_PERI
[309]	2277	_puts("- TTY : channels = ");
[263]	2278	_putd(channels);
	2279	_puts("\n");
	2280	#endif
	2281	break;
	2282	}
[299]	2283	case PERIPH_TYPE_IOB: // vci_io_bridge component
[258]	2284	{
[299]	2285	if (GIET_USE_IOMMU)
[258]	2286	{
	2287	// TODO
	2288	// get the iommu page table physical address
	2289	// set IOMMU page table address
	2290	// pseg_base[IOB_IOMMU_PTPR] = ptab_pbase;
	2291	// activate IOMMU
	2292	// pseg_base[IOB_IOMMU_ACTIVE] = 1;
	2293	}
	2294	break;
	2295	}
[295]	2296	case PERIPH_TYPE_PIC: // vci_iopic component
	2297	{
	2298	#if BOOT_DEBUG_PERI
[309]	2299	_puts("- PIC : channels = ");
[295]	2300	_putd(channels);
	2301	_puts("\n");
	2302	#endif
[309]	2303	// scan all IRQs defined in mapping for PIC component,
[295]	2304	// and initialises addresses for WTI IRQs
	2305	for ( channel_id = periph[periph_id].irq_offset ;
	2306	channel_id < periph[periph_id].irq_offset + periph[periph_id].irqs ;
	2307	channel_id++ )
	2308	{
[321]	2309	unsigned int hwi_id = irq[channel_id].srcid; // HWI index in PIC
	2310	unsigned int wti_id = irq[channel_id].dest_id; // WTI index in XCU
	2311	unsigned int cluster_xy = irq[channel_id].dest_xy; // XCU coordinates
[295]	2312	unsigned int vaddr;
	2313
	2314	_xcu_get_wti_address( wti_id, &vaddr );
[412]	2315	_pic_init( hwi_id, vaddr, cluster_xy );
[295]	2316
	2317	#if BOOT_DEBUG_PERI
[412]	2318	unsigned int address = _pic_get_register( channel_id, IOPIC_ADDRESS );
	2319	unsigned int extend = _pic_get_register( channel_id, IOPIC_EXTEND );
[295]	2320	_puts(" hwi_index = ");
	2321	_putd( hwi_id );
	2322	_puts(" / wti_index = ");
	2323	_putd( wti_id );
	2324	_puts(" / vaddr = ");
	2325	_putx( vaddr );
	2326	_puts(" in cluster[");
[321]	2327	_putd( cluster_xy >> Y_WIDTH );
[295]	2328	_puts(",");
[321]	2329	_putd( cluster_xy & ((1<<Y_WIDTH)-1) );
[412]	2330	_puts("] / checked_xcu_paddr = ");
	2331	_putl( (paddr_t)address + (((paddr_t)extend)<<32) );
	2332	_puts("\n");
[295]	2333	#endif
	2334	}
	2335	break;
	2336	}
[258]	2337	} // end switch periph type
	2338	} // end for periphs
	2339
	2340	#if BOOT_DEBUG_PERI
[329]	2341	_puts("\n[BOOT DEBUG] Coprocessors initialisation in cluster[");
[263]	2342	_putd( x );
	2343	_puts(",");
	2344	_putd( y );
[329]	2345	_puts("]\n");
[258]	2346	#endif
	2347
[263]	2348	// loop on coprocessors
[258]	2349	for ( coproc_id = cluster[cluster_id].coproc_offset;
	2350	coproc_id < cluster[cluster_id].coproc_offset +
	2351	cluster[cluster_id].coprocs; coproc_id++ )
	2352	{
	2353
	2354	#if BOOT_DEBUG_PERI
	2355	_puts("- coprocessor name : ");
	2356	_puts(coproc[coproc_id].name);
	2357	_puts(" / nb ports = ");
	2358	_putd((unsigned int) coproc[coproc_id].ports);
	2359	_puts("\n");
	2360	#endif
	2361	// loop on the coprocessor ports
	2362	for ( cp_port_id = coproc[coproc_id].port_offset;
	2363	cp_port_id < coproc[coproc_id].port_offset + coproc[coproc_id].ports;
	2364	cp_port_id++ )
	2365	{
[412]	2366	// get global index of associted vobj
[321]	2367	unsigned int vobj_id = cp_port[cp_port_id].mwmr_vobj_id;
[258]	2368
[412]	2369	// get MWMR channel base address
	2370	page_table_t* ptab = (page_table_t*)_ptabs_vaddr[0][x][y];
	2371	unsigned int vbase = vobj[vobj_id].vbase;
	2372	unsigned int ppn;
	2373	unsigned int flags;
	2374	paddr_t pbase;
[258]	2375
[412]	2376	_v2p_translate( ptab,
	2377	vbase>>12 ,
	2378	&ppn,
	2379	&flags );
	2380
	2381	pbase = ((paddr_t)ppn)<<12;
	2382
	2383	// initialise cp_port
[263]	2384	_mwr_hw_init( cluster_xy,
	2385	cp_port_id,
	2386	cp_port[cp_port_id].direction,
[412]	2387	pbase );
[258]	2388	#if BOOT_DEBUG_PERI
	2389	_puts(" port direction: ");
	2390	_putd( (unsigned int)cp_port[cp_port_id].direction );
	2391	_puts(" / mwmr_channel_pbase = ");
[412]	2392	_putl( pbase );
[258]	2393	_puts(" / name = ");
	2394	_puts(vobj[vobj_id].name);
	2395	_puts("\n");
	2396	#endif
	2397	} // end for cp_ports
	2398	} // end for coprocs
	2399	} // end for clusters
	2400	} // end boot_peripherals_init()
	2401
	2402	/////////////////////////////////////////////////////////////////////////
[412]	2403	// This function initialises the physical memory allocators in each
	2404	// cluster containing a RAM pseg.
	2405	/////////////////////////////////////////////////////////////////////////
	2406	void boot_pmem_init()
	2407	{
	2408	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	2409	mapping_cluster_t* cluster = _get_cluster_base(header);
	2410	mapping_pseg_t* pseg = _get_pseg_base(header);
	2411
	2412	unsigned int cluster_id;
	2413	unsigned int pseg_id;
	2414
	2415	// scan all clusters
	2416	for ( cluster_id = 0 ; cluster_id < X_SIZE*Y_SIZE ; cluster_id++ )
	2417	{
	2418	// scan the psegs in cluster to find first pseg of type RAM
	2419	unsigned int pseg_min = cluster[cluster_id].pseg_offset;
	2420	unsigned int pseg_max = pseg_min + cluster[cluster_id].psegs;
	2421	for ( pseg_id = pseg_min ; pseg_id < pseg_max ; pseg_id++ )
	2422	{
	2423	if ( pseg[pseg_id].type == PSEG_TYPE_RAM )
	2424	{
	2425	unsigned int x = cluster[cluster_id].x;
	2426	unsigned int y = cluster[cluster_id].y;
	2427	unsigned int base = (unsigned int)pseg[pseg_id].base;
	2428	unsigned int size = (unsigned int)pseg[pseg_id].length;
	2429	_pmem_alloc_init( x, y, base, size );
	2430
	2431	#if BOOT_DEBUG_PT
	2432	_puts("\n[BOOT DEBUG] pmem allocator initialised in cluster[");
	2433	_putd( x );
	2434	_puts(",");
	2435	_putd( y );
	2436	_puts("] base = ");
	2437	_putx( base );
	2438	_puts(" / size = ");
	2439	_putx( size );
	2440	_puts("\n");
	2441	#endif
	2442	break;
	2443	}
	2444	}
	2445	}
	2446	} // end boot_pmem_init()
	2447
	2448	/////////////////////////////////////////////////////////////////////////
[258]	2449	// This function is the entry point of the boot code for all processors.
	2450	// Most of this code is executed by Processor 0 only.
	2451	/////////////////////////////////////////////////////////////////////////
[347]	2452	void boot_init()
[258]	2453	{
[321]	2454	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[295]	2455	mapping_cluster_t* cluster = _get_cluster_base(header);
	2456	unsigned int gpid = _get_procid();
[258]	2457
[263]	2458	if ( gpid == 0 ) // only Processor 0 does it
[258]	2459	{
	2460	_puts("\n[BOOT] boot_init start at cycle ");
	2461	_putd(_get_proctime());
	2462	_puts("\n");
	2463
[347]	2464	// Load the map.bin file into memory and check it
[258]	2465	boot_mapping_init();
	2466
[295]	2467	_puts("\n[BOOT] Mapping \"");
[258]	2468	_puts( header->name );
[295]	2469	_puts("\" loaded at cycle ");
[258]	2470	_putd(_get_proctime());
	2471	_puts("\n");
	2472
[412]	2473	// Initializes the physical memory allocators
	2474	boot_pmem_init();
	2475
	2476	_puts("\n[BOOT] Physical memory allocators initialised at cycle ");
	2477	_putd(_get_proctime());
	2478	_puts("\n");
	2479
[347]	2480	// Build page tables
[412]	2481	_ptabs_init();
[258]	2482
[412]	2483	_puts("\n[BOOT] Page tables initialised at cycle ");
	2484	_putd(_get_proctime());
	2485	_puts("\n");
	2486
[347]	2487	// Activate MMU for proc [0,0,0]
	2488	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[0][0][0]>>13) );
[258]	2489	_set_mmu_mode( 0xF );
	2490
[263]	2491	_puts("\n[BOOT] Processor[0,0,0] : MMU activation at cycle ");
[258]	2492	_putd(_get_proctime());
	2493	_puts("\n");
	2494
[347]	2495	// Initialise private vobjs in vspaces
[258]	2496	boot_vobjs_init();
	2497
	2498	_puts("\n[BOOT] Private vobjs initialised at cycle ");
	2499	_putd(_get_proctime());
	2500	_puts("\n");
	2501
[347]	2502	// Initialise schedulers
[258]	2503	boot_schedulers_init();
	2504
[295]	2505	_puts("\n[BOOT] Schedulers initialised at cycle ");
[258]	2506	_putd(_get_proctime());
	2507	_puts("\n");
	2508
[347]	2509	// Set CP0_SCHED register for proc [0,0,0]
	2510	_set_sched( (unsigned int)_schedulers[0][0][0] );
[258]	2511
[347]	2512	// Initialise non replicated peripherals
[258]	2513	boot_peripherals_init();
	2514
[295]	2515	_puts("\n[BOOT] Non replicated peripherals initialised at cycle ");
[258]	2516	_putd(_get_proctime());
	2517	_puts("\n");
	2518
	2519	// Loading all .elf files
	2520	boot_elf_load();
	2521
[295]	2522	// P0 starts all other processors
	2523	unsigned int clusterid, p;
[258]	2524
[295]	2525	for ( clusterid = 0 ; clusterid < X_SIZE*Y_SIZE ; clusterid++ )
[258]	2526	{
[295]	2527	unsigned int nprocs = cluster[clusterid].procs;
[347]	2528	unsigned int x = cluster[clusterid].x;
	2529	unsigned int y = cluster[clusterid].y;
	2530	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[295]	2531
	2532	for ( p = 0 ; p < nprocs; p++ )
[258]	2533	{
[295]	2534	if ( (nprocs > 0) && ((clusterid != 0) \|\| (p != 0)) )
[258]	2535	{
[366]	2536	_xcu_send_wti( cluster_xy, p, (unsigned int)boot_entry );
[258]	2537	}
	2538	}
	2539	}
[295]	2540
[258]	2541	} // end monoprocessor boot
	2542
[356]	2543	///////////////////////////////////////////////////////////////////////////////
	2544	// Parallel execution starts actually here
	2545	///////////////////////////////////////////////////////////////////////////////
	2546
	2547	// all processors reset BEV bit in the status register to use
	2548	// the GIET_VM exception handler instead of the PRELOADER exception handler
[262]	2549	_set_sr( 0 );
	2550
[356]	2551	// all processor initialise the SCHED register
	2552	// from the _schedulers[x][y][lpid array]
[347]	2553	unsigned int cluster_xy = gpid / NB_PROCS_MAX;
	2554	unsigned int lpid = gpid % NB_PROCS_MAX;
	2555	unsigned int x = cluster_xy >> Y_WIDTH;
	2556	unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1);
	2557	_set_sched( (unsigned int)_schedulers[x][y][lpid] );
[258]	2558
[347]	2559	// all processors (but Proc[0,0,0]) activate MMU
[263]	2560	if ( gpid != 0 )
[258]	2561	{
[347]	2562	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[0][x][y]>>13) );
[258]	2563	_set_mmu_mode( 0xF );
	2564	}
	2565
[356]	2566	// all processors jump to kernel_init
	2567	// using the address defined in the giet_vsegs.ld file
[321]	2568	unsigned int kernel_entry = (unsigned int)&kernel_init_vbase;
[258]	2569	asm volatile( "jr %0" ::"r"(kernel_entry) );
	2570
	2571	} // end boot_init()
	2572
	2573
	2574	// Local Variables:
	2575	// tab-width: 4
	2576	// c-basic-offset: 4
	2577	// c-file-offsets:((innamespace . 0)(inline-open . 0))
	2578	// indent-tabs-mode: nil
	2579	// End:
	2580	// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
	2581

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