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source: soft/giet_vm/giet_boot/boot.c @ 462

Last change on this file since 462 was 460, checked in by alain, 10 years ago
Introducing an explicit FAT initialisation in boot.c.
File size: 83.2 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>
[436]	65	#include <mapping_info.h>
[258]	66	#include <mwmr_channel.h>
	67	#include <barrier.h>
	68	#include <memspace.h>
	69	#include <tty_driver.h>
	70	#include <xcu_driver.h>
[347]	71	#include <bdv_driver.h>
[460]	72	#include <hba_driver.h>
[258]	73	#include <dma_driver.h>
	74	#include <cma_driver.h>
	75	#include <nic_driver.h>
	76	#include <ioc_driver.h>
[299]	77	#include <iob_driver.h>
[295]	78	#include <pic_driver.h>
[258]	79	#include <mwr_driver.h>
	80	#include <ctx_handler.h>
	81	#include <irq_handler.h>
	82	#include <vmem.h>
[412]	83	#include <pmem.h>
[258]	84	#include <utils.h>
[460]	85	#include <tty0.h>
[258]	86	#include <elf-types.h>
	87
	88	// for boot FAT initialisation
	89	#include <fat32.h>
	90
	91	#include <mips32_registers.h>
	92	#include <stdarg.h>
	93
[263]	94	#if !defined(X_SIZE)
[359]	95	# error: The X_SIZE value must be defined in the 'hard_config.h' file !
[258]	96	#endif
	97
[263]	98	#if !defined(Y_SIZE)
[359]	99	# error: The Y_SIZE value must be defined in the 'hard_config.h' file !
[263]	100	#endif
	101
	102	#if !defined(X_WIDTH)
[359]	103	# error: The X_WIDTH value must be defined in the 'hard_config.h' file !
[263]	104	#endif
	105
	106	#if !defined(Y_WIDTH)
[359]	107	# error: The Y_WIDTH value must be defined in the 'hard_config.h' file !
[263]	108	#endif
	109
[321]	110	#if !defined(SEG_BOOT_MAPPING_BASE)
[359]	111	# error: The SEG_BOOT_MAPPING_BASE value must be defined in the hard_config.h file !
[321]	112	#endif
	113
[359]	114	#if !defined(NB_PROCS_MAX)
	115	# error: The NB_PROCS_MAX value must be defined in the 'hard_config.h' file !
[321]	116	#endif
	117
[359]	118	#if !defined(GIET_NB_VSPACE_MAX)
	119	# error: The GIET_NB_VSPACE_MAX value must be defined in the 'giet_config.h' file !
[321]	120	#endif
	121
[359]	122	#if !defined(GIET_ELF_BUFFER_SIZE)
	123	# error: The GIET_ELF_BUFFER_SIZE value must be defined in the giet_config.h file !
[258]	124	#endif
	125
	126	////////////////////////////////////////////////////////////////////////////
	127	// Global variables for boot code
	128	////////////////////////////////////////////////////////////////////////////
	129
[366]	130	extern void boot_entry();
	131
[412]	132	// FAT internal representation for boot code
	133	__attribute__((section (".bootdata")))
	134	fat32_fs_t fat __attribute__((aligned(512)));
[258]	135
[412]	136	// Temporaty buffer used to load one complete .elf file
[258]	137	__attribute__((section (".bootdata")))
[412]	138	char boot_elf_buffer[GIET_ELF_BUFFER_SIZE] __attribute__((aligned(512)));
[258]	139
[412]	140	// Physical memory allocators array (one per cluster)
[258]	141	__attribute__((section (".bootdata")))
[412]	142	pmem_alloc_t boot_pmem_alloc[X_SIZE][Y_SIZE];
[258]	143
[412]	144	// Schedulers virtual base addresses array (one per processor)
[258]	145	__attribute__((section (".bootdata")))
[412]	146	static_scheduler_t* _schedulers[X_SIZE][Y_SIZE][NB_PROCS_MAX];
[258]	147
[412]	148	// Page tables virtual base addresses array (one per vspace)
[258]	149	__attribute__((section (".bootdata")))
[412]	150	unsigned int _ptabs_vaddr[GIET_NB_VSPACE_MAX][X_SIZE][Y_SIZE];
[258]	151
[412]	152	// Page tables physical base addresses (one per vspace and per cluster)
[263]	153	__attribute__((section (".bootdata")))
[412]	154	paddr_t _ptabs_paddr[GIET_NB_VSPACE_MAX][X_SIZE][Y_SIZE];
[258]	155
[412]	156	// Page tables pt2 allocators (one per vspace and per cluster)
[359]	157	__attribute__((section (".bootdata")))
[412]	158	unsigned int _ptabs_next_pt2[GIET_NB_VSPACE_MAX][X_SIZE][Y_SIZE];
[263]	159
[412]	160	// Page tables max_pt2 (same value for all page tables)
	161	__attribute__((section (".bootdata")))
	162	unsigned int _ptabs_max_pt2;
	163
[258]	164	/////////////////////////////////////////////////////////////////////
	165	// This function checks consistence beween the mapping_info data
	166	// structure (soft), and the giet_config file (hard).
	167	/////////////////////////////////////////////////////////////////////
	168	void boot_mapping_check()
	169	{
[321]	170	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	171
	172	// checking mapping availability
	173	if (header->signature != IN_MAPPING_SIGNATURE)
	174	{
	175	_puts("\n[BOOT ERROR] Illegal mapping signature: ");
	176	_putx(header->signature);
	177	_puts("\n");
	178	_exit();
	179	}
[263]	180
[258]	181	// checking number of clusters
[263]	182	if ( (header->x_size != X_SIZE) \|\|
	183	(header->y_size != Y_SIZE) \|\|
	184	(header->x_width != X_WIDTH) \|\|
	185	(header->y_width != Y_WIDTH) )
[258]	186	{
[263]	187	_puts("\n[BOOT ERROR] Incoherent X_SIZE or Y_SIZE ");
	188	_puts("\n - In hard_config: X_SIZE = ");
	189	_putd( X_SIZE );
	190	_puts(" / Y_SIZE = ");
	191	_putd( Y_SIZE );
	192	_puts(" / X_WIDTH = ");
	193	_putd( X_WIDTH );
	194	_puts(" / Y_WIDTH = ");
	195	_putd( Y_WIDTH );
	196	_puts("\n - In mapping_info: x_size = ");
	197	_putd( header->x_size );
	198	_puts(" / y_size = ");
	199	_putd( header->y_size );
	200	_puts(" / x_width = ");
	201	_putd( header->x_width );
	202	_puts(" / y_width = ");
	203	_putd( header->y_width );
[258]	204	_puts("\n");
	205	_exit();
	206	}
	207	// checking number of virtual spaces
	208	if (header->vspaces > GIET_NB_VSPACE_MAX)
	209	{
	210	_puts("\n[BOOT ERROR] : number of vspaces > GIET_NB_VSPACE_MAX\n");
	211	_puts("\n");
	212	_exit();
	213	}
	214
	215	#if BOOT_DEBUG_MAPPING
[263]	216	_puts("\n - x_size = ");
	217	_putd( header->x_size );
	218	_puts("\n - y_size = ");
	219	_putd( header->y_size );
[258]	220	_puts("\n - procs = ");
	221	_putd( header->procs );
	222	_puts("\n - periphs = ");
	223	_putd( header->periphs );
	224	_puts("\n - vspaces = ");
	225	_putd( header->vspaces );
	226	_puts("\n - tasks = ");
	227	_putd( header->tasks );
	228	_puts("\n");
	229	_puts("\n - size of header = ");
	230	_putd( MAPPING_HEADER_SIZE );
	231	_puts("\n - size of cluster = ");
	232	_putd( MAPPING_CLUSTER_SIZE );
	233	_puts("\n - size of pseg = ");
	234	_putd( MAPPING_PSEG_SIZE );
	235	_puts("\n - size of proc = ");
	236	_putd( MAPPING_PROC_SIZE );
	237	_puts("\n - size of vspace = ");
	238	_putd( MAPPING_VSPACE_SIZE );
	239	_puts("\n - size of vseg = ");
	240	_putd( MAPPING_VSEG_SIZE );
	241	_puts("\n - size of vobj = ");
	242	_putd( MAPPING_VOBJ_SIZE );
	243	_puts("\n - size of task = ");
	244	_putd( MAPPING_TASK_SIZE );
	245	_puts("\n");
	246
[263]	247	unsigned int cluster_id;
[258]	248	mapping_cluster_t * cluster = _get_cluster_base(header);
[263]	249	for( cluster_id = 0; cluster_id < X_SIZE*Y_SIZE ; cluster_id++)
[258]	250	{
[263]	251	_puts("\n - cluster[");
	252	_putd( cluster[cluster_id].x );
	253	_puts(",");
	254	_putd( cluster[cluster_id].y );
	255	_puts("]\n procs = ");
	256	_putd( cluster[cluster_id].procs );
	257	_puts("\n psegs = ");
	258	_putd( cluster[cluster_id].psegs );
	259	_puts("\n periphs = ");
	260	_putd( cluster[cluster_id].periphs );
	261	_puts("\n");
[258]	262	}
	263	#endif
	264
	265	} // end boot_mapping_check()
	266
	267	//////////////////////////////////////////////////////////////////////////////
[412]	268	// This function registers a new PTE1 in the page table defined
	269	// by the vspace_id argument, and the (x,y) coordinates.
	270	// It updates only the first level PT1.
[258]	271	//////////////////////////////////////////////////////////////////////////////
[412]	272	void boot_add_pte1( unsigned int vspace_id,
	273	unsigned int x,
	274	unsigned int y,
	275	unsigned int vpn, // 20 bits right-justified
	276	unsigned int flags, // 10 bits left-justified
	277	unsigned int ppn ) // 28 bits right-justified
[258]	278	{
[427]	279
	280	#if (BOOT_DEBUG_PT > 1)
	281	_puts(" - PTE1 in PTAB[");
	282	_putd( vspace_id );
	283	_puts(",");
	284	_putd( x );
	285	_puts(",");
	286	_putd( y );
	287	_puts("] : vpn = ");
	288	_putx( vpn );
	289	#endif
	290
[412]	291	// compute index in PT1
	292	unsigned int ix1 = vpn >> 9; // 11 bits for ix1
[258]	293
[412]	294	// get page table physical base address
	295	paddr_t pt1_pbase = _ptabs_paddr[vspace_id][x][y];
	296
	297	// check pt1_base
	298	if ( pt1_pbase == 0 )
[258]	299	{
[412]	300	_puts("\n[BOOT ERROR] in boot_add_pte1() : illegal pbase address for PTAB[");
	301	_putd( vspace_id );
	302	_puts(",");
	303	_putd( x );
	304	_puts(",");
	305	_putd( y );
	306	_puts("]\n");
[258]	307	_exit();
	308	}
	309
[412]	310	// compute pte1 : 2 bits V T / 8 bits flags / 3 bits RSVD / 19 bits bppi
	311	unsigned int pte1 = PTE_V \|
	312	(flags & 0x3FC00000) \|
	313	((ppn>>9) & 0x0007FFFF);
[258]	314
[412]	315	// write pte1 in PT1
	316	_physical_write( pt1_pbase + 4*ix1, pte1 );
	317
	318	#if (BOOT_DEBUG_PT > 1)
	319	_puts(" / ppn = ");
	320	_putx( ppn );
	321	_puts(" / flags = ");
	322	_putx( flags );
	323	_puts("\n");
	324	#endif
	325
	326	} // end boot_add_pte1()
	327
[258]	328	//////////////////////////////////////////////////////////////////////////////
[412]	329	// This function registers a new PTE2 in the page table defined
[347]	330	// by the vspace_id argument, and the (x,y) coordinates.
[412]	331	// It updates both the first level PT1 and the second level PT2.
[258]	332	// As the set of PT2s is implemented as a fixed size array (no dynamic
	333	// allocation), this function checks a possible overflow of the PT2 array.
	334	//////////////////////////////////////////////////////////////////////////////
[412]	335	void boot_add_pte2( unsigned int vspace_id,
	336	unsigned int x,
	337	unsigned int y,
	338	unsigned int vpn, // 20 bits right-justified
	339	unsigned int flags, // 10 bits left-justified
	340	unsigned int ppn ) // 28 bits right-justified
[258]	341	{
[427]	342
	343	#if (BOOT_DEBUG_PT > 1)
	344	_puts(" - PTE2 in PTAB[");
	345	_putd( vspace_id );
	346	_puts(",");
	347	_putd( x );
	348	_puts(",");
	349	_putd( y );
	350	_puts("] : vpn = ");
	351	_putx( vpn );
	352	#endif
	353
[258]	354	unsigned int ix1;
	355	unsigned int ix2;
[347]	356	paddr_t pt2_pbase; // PT2 physical base address
[412]	357	paddr_t pte2_paddr; // PTE2 physical address
[258]	358	unsigned int pt2_id; // PT2 index
	359	unsigned int ptd; // PTD : entry in PT1
	360
[412]	361	ix1 = vpn >> 9; // 11 bits for ix1
	362	ix2 = vpn & 0x1FF; // 9 bits for ix2
[258]	363
[347]	364	// get page table physical base address and size
	365	paddr_t pt1_pbase = _ptabs_paddr[vspace_id][x][y];
[258]	366
[412]	367	// check pt1_base
	368	if ( pt1_pbase == 0 )
[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("] undefined\n");
[258]	377	_exit();
	378	}
	379
	380	// get ptd in PT1
	381	ptd = _physical_read(pt1_pbase + 4 * ix1);
	382
[347]	383	if ((ptd & PTE_V) == 0) // undefined PTD: compute PT2 base address,
[258]	384	// and set a new PTD in PT1
	385	{
[347]	386	pt2_id = _ptabs_next_pt2[vspace_id][x][y];
[412]	387	if (pt2_id == _ptabs_max_pt2)
[258]	388	{
[412]	389	_puts("\n[BOOT ERROR] in boot_add_pte2() : PTAB[");
	390	_putd( vspace_id );
	391	_puts(",");
	392	_putd( x );
	393	_puts(",");
	394	_putd( y );
	395	_puts("] contains not enough PT2s\n");
[258]	396	_exit();
	397	}
[347]	398
	399	pt2_pbase = pt1_pbase + PT1_SIZE + PT2_SIZE * pt2_id;
	400	ptd = PTE_V \| PTE_T \| (unsigned int) (pt2_pbase >> 12);
[412]	401	_physical_write( pt1_pbase + 4*ix1, ptd);
[347]	402	_ptabs_next_pt2[vspace_id][x][y] = pt2_id + 1;
[258]	403	}
	404	else // valid PTD: compute PT2 base address
	405	{
	406	pt2_pbase = ((paddr_t)(ptd & 0x0FFFFFFF)) << 12;
	407	}
	408
	409	// set PTE in PT2 : flags & PPN in two 32 bits words
[412]	410	pte2_paddr = pt2_pbase + 8 * ix2;
	411	_physical_write(pte2_paddr , (PTE_V \|flags) );
	412	_physical_write(pte2_paddr + 4 , ppn);
[258]	413
[412]	414	#if (BOOT_DEBUG_PT > 1)
	415	_puts(" / ppn = ");
	416	_putx( ppn );
	417	_puts(" / flags = ");
	418	_putx( flags );
[347]	419	_puts("\n");
[258]	420	#endif
	421
[412]	422	} // end boot_add_pte2()
[258]	423
[412]	424	////////////////////////////////////////////////////////////////////////////////////
[258]	425	// Align the value of paddr or vaddr to the required alignement,
	426	// defined by alignPow2 == L2(alignement).
[412]	427	////////////////////////////////////////////////////////////////////////////////////
[258]	428	paddr_t paddr_align_to(paddr_t paddr, unsigned int alignPow2)
	429	{
	430	paddr_t mask = (1 << alignPow2) - 1;
	431	return ((paddr + mask) & ~mask);
	432	}
	433
	434	unsigned int vaddr_align_to(unsigned int vaddr, unsigned int alignPow2)
	435	{
	436	unsigned int mask = (1 << alignPow2) - 1;
	437	return ((vaddr + mask) & ~mask);
	438	}
	439
[412]	440	/////////////////////////////////////////////////////////////////////////////////////
	441	// This function map a vseg identified by the vseg pointer.
	442	//
	443	// A given vseg can be mapped in Big Physical Pages (BPP: 2 Mbytes) or in a
	444	// Small Physical Pages (SPP: 4 Kbytes), depending on the "big" attribute of vseg,
	445	// with the following rules:
	446	// - SPP : There is only one vseg in a small physical page, but a single vseg
	447	// can cover several contiguous small physical pages.
	448	// - BPP : It can exist several vsegs in a single big physical page, and a single
	449	// vseg can cover several contiguous big physical pages.
	450	//
	451	// 1) First step: it computes the vseg length, and register it in vseg->length field.
	452	// It computes - for each vobj - the actual vbase address, taking into
	453	// account the alignment constraints and register it in vobj->vbase field.
	454	//
	455	// 2) Second step: it allocates the required number of physical pages,
	456	// computes the physical base address (if the vseg is not identity mapping),
	457	// and register it in the vseg pbase field.
	458	// Only the 4 vsegs used by the boot code and the peripheral vsegs
	459	// can be identity mapping: The first big physical page in cluster[0,0]
	460	// is reserved for the 4 boot vsegs.
	461	//
	462	// 3) Third step (only for vseg that have the VOBJ_TYPE_PTAB): all page tables
	463	// associated to the various vspaces must be packed in the same vseg.
	464	// We divide the vseg in M sub-segments, and compute the vbase and pbase
	465	// addresses for each page table, and register it in the _ptabs_paddr
	466	// and _ptabs_vaddr arrays.
	467	//
	468	/////////////////////////////////////////////////////////////////////////////////////
[427]	469	void boot_vseg_map( mapping_vseg_t* vseg,
	470	unsigned int vspace_id )
[258]	471	{
[412]	472	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	473	mapping_vobj_t* vobj = _get_vobj_base(header);
	474	mapping_cluster_t* cluster = _get_cluster_base(header);
	475	mapping_pseg_t* pseg = _get_pseg_base(header);
[258]	476
[412]	477	// compute destination cluster pointer & coordinates
	478	pseg = pseg + vseg->psegid;
	479	cluster = cluster + pseg->clusterid;
	480	unsigned int x_dest = cluster->x;
	481	unsigned int y_dest = cluster->y;
[258]	482
[412]	483	// compute the first vobj global index
	484	unsigned int vobj_id = vseg->vobj_offset;
	485
	486	// compute the "big" vseg attribute
	487	unsigned int big = vseg->big;
[258]	488
[412]	489	// compute the "is_ram" vseg attribute
	490	unsigned int is_ram;
	491	if ( pseg->type == PSEG_TYPE_RAM ) is_ram = 1;
	492	else is_ram = 0;
[258]	493
[412]	494	// compute the "is_ptab" attribute
	495	unsigned int is_ptab;
	496	if ( vobj[vobj_id].type == VOBJ_TYPE_PTAB ) is_ptab = 1;
	497	else is_ptab = 0;
[258]	498
[427]	499	// compute actual vspace index
	500	unsigned int vsid;
	501	if ( vspace_id == 0xFFFFFFFF ) vsid = 0;
	502	else vsid = vspace_id;
	503
[412]	504	//////////// First step : compute vseg length and vobj(s) vbase
[258]	505
[412]	506	unsigned int vobj_vbase = vseg->vbase; // min vbase for first vobj
[258]	507
[412]	508	for ( vobj_id = vseg->vobj_offset ;
	509	vobj_id < (vseg->vobj_offset + vseg->vobjs) ;
	510	vobj_id++ )
[258]	511	{
[412]	512	// compute and register vobj vbase
	513	vobj[vobj_id].vbase = vaddr_align_to( vobj_vbase, vobj[vobj_id].align );
	514
	515	// compute min vbase for next vobj
	516	vobj_vbase = vobj[vobj_id].vbase + vobj[vobj_id].length;
[258]	517	}
	518
[412]	519	// compute and register vseg length (multiple of 4 Kbytes)
	520	vseg->length = vaddr_align_to( vobj_vbase - vseg->vbase, 12 );
	521
	522	//////////// Second step : compute ppn and npages
	523	//////////// - if identity mapping : ppn <= vpn
	524	//////////// - if vseg is periph : ppn <= pseg.base >> 12
	525	//////////// - if vseg is ram : ppn <= physical memory allocator
[258]	526
[412]	527	unsigned int ppn; // first physical page index ( 28 bits = \|x\|y\|bppi\|sppi\| )
	528	unsigned int vpn; // first virtual page index ( 20 bits = \|ix1\|ix2\| )
	529	unsigned int vpn_max; // last virtual page index ( 20 bits = \|ix1\|ix2\| )
[258]	530
[412]	531	vpn = vseg->vbase >> 12;
	532	vpn_max = (vseg->vbase + vseg->length - 1) >> 12;
[258]	533
[412]	534	// compute npages
	535	unsigned int npages; // number of required (big or small) pages
	536	if ( big == 0 ) npages = vpn_max - vpn + 1; // number of small pages
	537	else npages = (vpn_max>>9) - (vpn>>9) + 1; // number of big pages
	538
	539	// compute ppn
	540	if ( vseg->ident ) // identity mapping
[258]	541	{
[412]	542	ppn = vpn;
[258]	543	}
[412]	544	else // not identity mapping
[258]	545	{
[412]	546	if ( is_ram ) // RAM : physical memory allocation required
[258]	547	{
[412]	548	// compute pointer on physical memory allocator in dest cluster
	549	pmem_alloc_t* palloc = &boot_pmem_alloc[x_dest][y_dest];
[258]	550
[412]	551	if ( big == 0 ) // SPP : small physical pages
	552	{
	553	// allocate contiguous small physical pages
	554	ppn = _get_small_ppn( palloc, npages );
	555	}
	556	else // BPP : big physical pages
	557	{
	558
	559	// one big page can be shared by several vsegs
	560	// we must chek if BPP already allocated
	561	if ( is_ptab ) // It cannot be mapped
	562	{
	563	ppn = _get_big_ppn( palloc, npages );
	564	}
	565	else // It can be mapped
	566	{
	567	unsigned int ix1 = vpn >> 9; // 11 bits
[427]	568	paddr_t paddr = _ptabs_paddr[vsid][x_dest][y_dest] + (ix1<<2);
[412]	569	unsigned int pte1 = _physical_read( paddr );
	570	if ( (pte1 & PTE_V) == 0 ) // BPP not allocated yet
	571	{
	572	// allocate contiguous big physical pages
[433]	573	ppn = _get_big_ppn( palloc, npages );
[412]	574	}
	575	else // BPP already allocated
	576	{
[433]	577	// test if new vseg has the same mode bits than
	578	// the other vsegs in the same big page
	579	unsigned int pte1_mode = 0;
	580	if (pte1 & PTE_C) pte1_mode \|= C_MODE_MASK;
	581	if (pte1 & PTE_X) pte1_mode \|= X_MODE_MASK;
	582	if (pte1 & PTE_W) pte1_mode \|= W_MODE_MASK;
	583	if (pte1 & PTE_U) pte1_mode \|= U_MODE_MASK;
	584	if (vseg->mode != pte1_mode) {
	585	_puts("\n[BOOT ERROR] in boot_vseg_map() : vseg ");
	586	_puts( vseg->name );
	587	_puts(" has different flags (");
	588	_putx( vseg->mode );
	589	_puts(") than other vsegs sharing the same big page (");
	590	_putx( pte1_mode );
	591	_puts(")");
	592	_exit();
	593	}
	594
[412]	595	ppn = ((pte1 << 9) & 0x0FFFFE00);
	596	}
	597	}
	598	ppn = ppn \| (vpn & 0x1FF);
	599	}
[258]	600	}
[412]	601	else // PERI : no memory allocation required
[258]	602	{
[412]	603	ppn = pseg->base >> 12;
[258]	604	}
	605	}
	606
[412]	607	// update vseg.pbase field and update vsegs chaining
	608	vseg->pbase = ((paddr_t)ppn) << 12;
	609	vseg->next_vseg = pseg->next_vseg;
	610	pseg->next_vseg = (unsigned int)vseg;
[258]	611
[412]	612
	613	//////////// Third step : (only if the vseg is a page table)
	614	//////////// - compute the physical & virtual base address for each vspace
	615	//////////// by dividing the vseg in several sub-segments.
	616	//////////// - register it in _ptabs_vaddr & _ptabs_paddr arrays,
[427]	617	//////////// and initialize next_pt2 allocators.
	618	//////////// - reset all entries in first level page tables
[412]	619
	620	if ( is_ptab )
[258]	621	{
[412]	622	unsigned int vs; // vspace index
	623	unsigned int nspaces; // number of vspaces
	624	unsigned int nsp; // number of small pages for one PTAB
	625	unsigned int offset; // address offset for current PTAB
[258]	626
[412]	627	nspaces = header->vspaces;
	628	offset = 0;
[258]	629
[412]	630	// each PTAB must be aligned on a 8 Kbytes boundary
[427]	631	nsp = ( vseg->length >> 12 ) / nspaces;
[412]	632	if ( (nsp & 0x1) == 0x1 ) nsp = nsp - 1;
[258]	633
[412]	634	// compute max_pt2
	635	_ptabs_max_pt2 = ((nsp<<12) - PT1_SIZE) / PT2_SIZE;
[433]	636
[412]	637	for ( vs = 0 ; vs < nspaces ; vs++ )
[258]	638	{
[433]	639	_ptabs_vaddr [vs][x_dest][y_dest] = (vpn + offset) << 12;
[412]	640	_ptabs_paddr [vs][x_dest][y_dest] = ((paddr_t)(ppn + offset)) << 12;
	641	_ptabs_next_pt2[vs][x_dest][y_dest] = 0;
[427]	642	offset += nsp;
[433]	643
[427]	644	// reset all entries in PT1 (8 Kbytes)
	645	_physical_memset( _ptabs_paddr[vs][x_dest][y_dest], PT1_SIZE, 0 );
[258]	646	}
	647	}
	648
[412]	649	#if BOOT_DEBUG_PT
	650	_puts("[BOOT DEBUG] ");
[433]	651	_puts( vseg->name );
[412]	652	_puts(" in cluster[");
	653	_putd( x_dest );
	654	_puts(",");
	655	_putd( y_dest );
	656	_puts("] : vbase = ");
	657	_putx( vseg->vbase );
	658	_puts(" / length = ");
	659	_putx( vseg->length );
	660	if ( big ) _puts(" / BIG / npages = ");
	661	else _puts(" / SMALL / npages = ");
	662	_putd( npages );
	663	_puts(" / pbase = ");
	664	_putl( vseg->pbase );
	665	_puts("\n");
	666	#endif
	667
	668	} // end boot_vseg_map()
	669
	670	/////////////////////////////////////////////////////////////////////////////////////
	671	// For the vseg defined by the vseg pointer, this function register all PTEs
	672	// in one or several page tables.
[436]	673	// It is a global vseg (kernel vseg) if (vspace_id == 0xFFFFFFFF).
[412]	674	// The number of involved PTABs depends on the "local" and "global" attributes:
	675	// - PTEs are replicated in all vspaces for a global vseg.
	676	// - PTEs are replicated in all clusters for a non local vseg.
	677	/////////////////////////////////////////////////////////////////////////////////////
[427]	678	void boot_vseg_pte( mapping_vseg_t* vseg,
	679	unsigned int vspace_id )
[412]	680	{
	681	// compute the "global" vseg attribute and actual vspace index
	682	unsigned int global;
	683	unsigned int vsid;
	684	if ( vspace_id == 0xFFFFFFFF )
[258]	685	{
[412]	686	global = 1;
	687	vsid = 0;
[258]	688	}
[412]	689	else
[258]	690	{
[412]	691	global = 0;
	692	vsid = vspace_id;
[258]	693	}
	694
[412]	695	// compute the "local" and "big" attributes
	696	unsigned int local = vseg->local;
	697	unsigned int big = vseg->big;
[258]	698
[412]	699	// compute vseg flags
	700	// The three flags (Local, Remote and Dirty) are set to 1 to reduce
	701	// latency of TLB miss (L/R) and write (D): Avoid hardware update
	702	// mechanism for these flags because GIET_VM does use these flags.
	703	unsigned int flags = 0;
	704	if (vseg->mode & C_MODE_MASK) flags \|= PTE_C;
	705	if (vseg->mode & X_MODE_MASK) flags \|= PTE_X;
	706	if (vseg->mode & W_MODE_MASK) flags \|= PTE_W;
	707	if (vseg->mode & U_MODE_MASK) flags \|= PTE_U;
	708	if ( global ) flags \|= PTE_G;
	709	flags \|= PTE_L;
	710	flags \|= PTE_R;
	711	flags \|= PTE_D;
[258]	712
[412]	713	// compute VPN, PPN and number of pages (big or small)
	714	unsigned int vpn = vseg->vbase >> 12;
	715	unsigned int vpn_max = (vseg->vbase + vseg->length - 1) >> 12;
	716	unsigned int ppn = (unsigned int)(vseg->pbase >> 12);
	717	unsigned int npages;
	718	if ( big == 0 ) npages = vpn_max - vpn + 1;
	719	else npages = (vpn_max>>9) - (vpn>>9) + 1;
	720
	721	// compute destination cluster coordinates
	722	unsigned int x_dest;
	723	unsigned int y_dest;
	724	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	725	mapping_cluster_t* cluster = _get_cluster_base(header);
	726	mapping_pseg_t* pseg = _get_pseg_base(header);
	727	pseg = pseg + vseg->psegid;
	728	cluster = cluster + pseg->clusterid;
	729	x_dest = cluster->x;
	730	y_dest = cluster->y;
	731
	732	unsigned int p; // iterator for physical page index
	733	unsigned int x; // iterator for cluster x coordinate
	734	unsigned int y; // iterator for cluster y coordinate
	735	unsigned int v; // iterator for vspace index
	736
	737	// loop on PTEs
	738	for ( p = 0 ; p < npages ; p++ )
	739	{
	740	if ( (local != 0) && (global == 0) ) // one cluster / one vspace
[258]	741	{
[412]	742	if ( big ) // big pages => PTE1s
	743	{
	744	boot_add_pte1( vsid,
	745	x_dest,
	746	y_dest,
	747	vpn + (p<<9),
	748	flags,
	749	ppn + (p<<9) );
	750	}
	751	else // small pages => PTE2s
	752	{
	753	boot_add_pte2( vsid,
	754	x_dest,
	755	y_dest,
	756	vpn + p,
	757	flags,
	758	ppn + p );
	759	}
[258]	760	}
[412]	761	else if ( (local == 0) && (global == 0) ) // all clusters / one vspace
[258]	762	{
[412]	763	for ( x = 0 ; x < X_SIZE ; x++ )
[258]	764	{
[412]	765	for ( y = 0 ; y < Y_SIZE ; y++ )
	766	{
	767	if ( big ) // big pages => PTE1s
	768	{
	769	boot_add_pte1( vsid,
	770	x,
	771	y,
	772	vpn + (p<<9),
	773	flags,
	774	ppn + (p<<9) );
	775	}
	776	else // small pages => PTE2s
	777	{
	778	boot_add_pte2( vsid,
	779	x,
	780	y,
	781	vpn + p,
	782	flags,
	783	ppn + p );
	784	}
	785	}
[258]	786	}
[412]	787	}
	788	else if ( (local != 0) && (global != 0) ) // one cluster / all vspaces
	789	{
	790	for ( v = 0 ; v < header->vspaces ; v++ )
[258]	791	{
[412]	792	if ( big ) // big pages => PTE1s
	793	{
	794	boot_add_pte1( v,
	795	x_dest,
	796	y_dest,
	797	vpn + (p<<9),
	798	flags,
	799	ppn + (p<<9) );
	800	}
	801	else // small pages = PTE2s
	802	{
	803	boot_add_pte2( v,
	804	x_dest,
	805	y_dest,
	806	vpn + p,
	807	flags,
	808	ppn + p );
	809	}
[258]	810	}
[412]	811	}
	812	else if ( (local == 0) && (global != 0) ) // all clusters / all vspaces
	813	{
	814	for ( x = 0 ; x < X_SIZE ; x++ )
[258]	815	{
[412]	816	for ( y = 0 ; y < Y_SIZE ; y++ )
	817	{
	818	for ( v = 0 ; v < header->vspaces ; v++ )
	819	{
	820	if ( big ) // big pages => PTE1s
	821	{
	822	boot_add_pte1( v,
	823	x,
	824	y,
	825	vpn + (p<<9),
	826	flags,
	827	ppn + (p<<9) );
	828	}
	829	else // small pages -> PTE2s
	830	{
	831	boot_add_pte2( v,
	832	x,
	833	y,
	834	vpn + p,
	835	flags,
	836	ppn + p );
	837	}
	838	}
	839	}
[258]	840	}
	841	}
[412]	842	} // end for pages
[427]	843	} // end boot_vseg_pte()
[258]	844
[412]	845	///////////////////////////////////////////////////////////////////////////////
	846	// This function initialises the page tables for all vspaces defined
	847	// in the mapping_info data structure.
	848	// For each vspace, there is one page table per cluster.
	849	// In each cluster all page tables for the different vspaces must be
	850	// packed in one vseg occupying one single BPP (Big Physical Page).
[258]	851	//
[412]	852	// For each vseg, the mapping is done in two steps:
[436]	853	// 1) mapping : the boot_vseg_map() function allocates contiguous BPPs
[412]	854	// or SPPs (if the vseg is not associated to a peripheral), and register
	855	// the physical base address in the vseg pbase field. It initialises the
	856	// _ptabs_vaddr and _ptabs_paddr arrays if the vseg is a PTAB.
	857	//
[436]	858	// 2) page table initialisation : the boot_vseg_pte() function initialise
[412]	859	// the PTEs (both PTE1 and PTE2) in one or several page tables:
	860	// - PTEs are replicated in all vspaces for a global vseg.
	861	// - PTEs are replicated in all clusters for a non local vseg.
	862	//
	863	// We must handle vsegs in the following order
	864	// 1) all global vsegs containing a page table,
	865	// 2) all global vsegs occupying more than one BPP,
	866	// 3) all others global vsegs
	867	// 4) all private vsegs in user space.
	868	///////////////////////////////////////////////////////////////////////////////
[436]	869	void boot_ptabs_init()
[258]	870	{
[412]	871	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	872	mapping_vspace_t* vspace = _get_vspace_base(header);
	873	mapping_vseg_t* vseg = _get_vseg_base(header);
	874	mapping_vobj_t* vobj = _get_vobj_base(header);
[258]	875
	876	unsigned int vspace_id;
	877	unsigned int vseg_id;
	878
	879	if (header->vspaces == 0 )
	880	{
[436]	881	_puts("\n[BOOT ERROR] in boot_ptabs_init() : mapping ");
[258]	882	_puts( header->name );
	883	_puts(" contains no vspace\n");
	884	_exit();
	885	}
	886
[412]	887	///////// Phase 1 : global vsegs containing a PTAB (two loops required)
	888
[258]	889	#if BOOT_DEBUG_PT
[412]	890	_puts("\n[BOOT DEBUG] map PTAB global vsegs\n");
[258]	891	#endif
	892
[412]	893	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	894	{
	895	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	896	if ( (vobj[vobj_id].type == VOBJ_TYPE_PTAB) )
	897	{
[427]	898	boot_vseg_map( &vseg[vseg_id], 0xFFFFFFFF );
[412]	899	vseg[vseg_id].mapped = 1;
	900	}
	901	}
[258]	902
	903	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	904	{
[412]	905	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	906	if ( (vobj[vobj_id].type == VOBJ_TYPE_PTAB) )
	907	{
[427]	908	boot_vseg_pte( &vseg[vseg_id], 0xFFFFFFFF );
[412]	909	vseg[vseg_id].mapped = 1;
	910	}
[258]	911	}
	912
[412]	913	///////// Phase 2 : global vsegs occupying more than one BPP (one loop)
	914
	915	#if BOOT_DEBUG_PT
	916	_puts("\n[BOOT DEBUG] map all multi-BPP global vsegs\n");
	917	#endif
	918
[258]	919	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	920	{
[412]	921	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	922	if ( (vobj[vobj_id].length > 0x200000) &&
	923	(vseg[vseg_id].mapped == 0) )
	924	{
[427]	925	boot_vseg_map( &vseg[vseg_id], 0xFFFFFFFF );
[412]	926	vseg[vseg_id].mapped = 1;
[427]	927	boot_vseg_pte( &vseg[vseg_id], 0xFFFFFFFF );
[412]	928	}
[258]	929	}
	930
[412]	931	///////// Phase 3 : all others global vsegs (one loop)
[347]	932
[412]	933	#if BOOT_DEBUG_PT
	934	_puts("\n[BOOT DEBUG] map all others global vsegs\n");
	935	#endif
	936
	937	for (vseg_id = 0; vseg_id < header->globals; vseg_id++)
	938	{
	939	if ( vseg[vseg_id].mapped == 0 )
	940	{
[427]	941	boot_vseg_map( &vseg[vseg_id], 0xFFFFFFFF );
[412]	942	vseg[vseg_id].mapped = 1;
[427]	943	boot_vseg_pte( &vseg[vseg_id], 0xFFFFFFFF );
[412]	944	}
	945	}
	946
	947	///////// Phase 4 : all private vsegs (two nested loops)
	948
[258]	949	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
	950	{
	951
	952	#if BOOT_DEBUG_PT
[412]	953	_puts("\n[BOOT DEBUG] map private vsegs for vspace ");
	954	_puts( vspace[vspace_id].name );
	955	_puts("\n");
[258]	956	#endif
	957
	958	for (vseg_id = vspace[vspace_id].vseg_offset;
	959	vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs);
	960	vseg_id++)
	961	{
[427]	962	boot_vseg_map( &vseg[vseg_id], vspace_id );
[412]	963	vseg[vseg_id].mapped = 1;
[427]	964	boot_vseg_pte( &vseg[vseg_id], vspace_id );
[258]	965	}
	966	}
	967
[412]	968	#if (BOOT_DEBUG_PT > 1)
[309]	969	mapping_vseg_t* curr;
	970	mapping_pseg_t* pseg = _get_pseg_base(header);
	971	mapping_cluster_t* cluster = _get_cluster_base(header);
	972	unsigned int pseg_id;
[258]	973	for( pseg_id = 0 ; pseg_id < header->psegs ; pseg_id++ )
	974	{
[309]	975	unsigned int cluster_id = pseg[pseg_id].clusterid;
[412]	976	_puts("\n[BOOT DEBUG] vsegs mapped on pseg ");
[258]	977	_puts( pseg[pseg_id].name );
[309]	978	_puts(" in cluster[");
	979	_putd( cluster[cluster_id].x );
	980	_puts(",");
	981	_putd( cluster[cluster_id].y );
[412]	982	_puts("]\n");
[258]	983	for( curr = (mapping_vseg_t*)pseg[pseg_id].next_vseg ;
	984	curr != 0 ;
	985	curr = (mapping_vseg_t*)curr->next_vseg )
	986	{
	987	_puts(" - vseg ");
	988	_puts( curr->name );
	989	_puts(" : len = ");
	990	_putx( curr->length );
	991	_puts(" / vbase ");
[295]	992	_putx( curr->vbase );
[258]	993	_puts(" / pbase ");
	994	_putl( curr->pbase );
	995	_puts("\n");
	996	}
	997	}
	998	#endif
	999
[412]	1000	} // end boot_ptabs_init()
[258]	1001
	1002	///////////////////////////////////////////////////////////////////////////////
[452]	1003	// This function initializes the private vobjs that have the CONST type.
[258]	1004	// The MMU is supposed to be activated...
	1005	///////////////////////////////////////////////////////////////////////////////
	1006	void boot_vobjs_init()
	1007	{
[321]	1008	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1009	mapping_vspace_t* vspace = _get_vspace_base(header);
	1010	mapping_vobj_t* vobj = _get_vobj_base(header);
	1011
	1012	unsigned int vspace_id;
	1013	unsigned int vobj_id;
	1014
	1015	// loop on the vspaces
	1016	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
	1017	{
	1018
	1019	#if BOOT_DEBUG_VOBJS
	1020	_puts("\n[BOOT DEBUG] ****** vobjs initialisation in vspace ");
	1021	_puts(vspace[vspace_id].name);
	1022	_puts(" ******\n");
	1023	#endif
	1024
[347]	1025	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[vspace_id][0][0] >> 13) );
[258]	1026
	1027	// loop on the vobjs
	1028	for (vobj_id = vspace[vspace_id].vobj_offset;
	1029	vobj_id < (vspace[vspace_id].vobj_offset + vspace[vspace_id].vobjs);
	1030	vobj_id++)
	1031	{
[452]	1032	if ( (vobj[vobj_id].type) == VOBJ_TYPE_CONST )
[258]	1033	{
[309]	1034	#if BOOT_DEBUG_VOBJS
[258]	1035	_puts("CONST : ");
	1036	_puts(vobj[vobj_id].name);
[452]	1037	_puts(" / vaddr = ");
[309]	1038	_putx(vobj[vobj_id].vaddr);
[452]	1039	_puts(" / paddr = ");
[258]	1040	_putl(vobj[vobj_id].paddr);
[452]	1041	_puts(" / value = ");
[309]	1042	_putx(vobj[vobj_id].init);
	1043	_puts("\n");
	1044	#endif
[452]	1045	unsigned int* addr = (unsigned int *) vobj[vobj_id].vbase;
	1046	*addr = vobj[vobj_id].init;
	1047	}
	1048	}
	1049	}
[258]	1050	} // end boot_vobjs_init()
	1051
	1052	///////////////////////////////////////////////////////////////////////////////
	1053	// This function returns in the vbase and length buffers the virtual base
	1054	// address and the length of the segment allocated to the schedulers array
	1055	// in the cluster defined by the clusterid argument.
	1056	///////////////////////////////////////////////////////////////////////////////
	1057	void boot_get_sched_vaddr( unsigned int cluster_id,
	1058	unsigned int* vbase,
	1059	unsigned int* length )
	1060	{
[321]	1061	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1062	mapping_vobj_t* vobj = _get_vobj_base(header);
	1063	mapping_vseg_t* vseg = _get_vseg_base(header);
	1064	mapping_pseg_t* pseg = _get_pseg_base(header);
	1065
	1066	unsigned int vseg_id;
	1067	unsigned int found = 0;
	1068
	1069	for ( vseg_id = 0 ; (vseg_id < header->vsegs) && (found == 0) ; vseg_id++ )
	1070	{
	1071	if ( (vobj[vseg[vseg_id].vobj_offset].type == VOBJ_TYPE_SCHED) &&
[263]	1072	(pseg[vseg[vseg_id].psegid].clusterid == cluster_id ) )
[258]	1073	{
	1074	*vbase = vseg[vseg_id].vbase;
	1075	*length = vobj[vseg[vseg_id].vobj_offset].length;
	1076	found = 1;
	1077	}
	1078	}
	1079	if ( found == 0 )
	1080	{
[263]	1081	mapping_cluster_t* cluster = _get_cluster_base(header);
	1082	_puts("\n[BOOT ERROR] No vobj of type SCHED in cluster [");
	1083	_putd( cluster[cluster_id].x );
	1084	_puts(",");
	1085	_putd( cluster[cluster_id].y );
	1086	_puts("]\n");
[258]	1087	_exit();
	1088	}
	1089	} // end boot_get_sched_vaddr()
	1090
	1091	////////////////////////////////////////////////////////////////////////////////////
	1092	// This function initialises all processors schedulers.
	1093	// This is done by processor 0, and the MMU must be activated.
[412]	1094	// - In Step 1, it initialises the _schedulers[x][y][l] pointers array, and scan
	1095	// the processors for a first initialisation of the schedulers:
	1096	// idle_task context, and HWI / SWI / PTI vectors.
[321]	1097	// - In Step 2, it scan all tasks in all vspaces to complete the tasks contexts,
	1098	// initialisation as specified in the mapping_info data structure.
[258]	1099	////////////////////////////////////////////////////////////////////////////////////
	1100	void boot_schedulers_init()
	1101	{
[321]	1102	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1103	mapping_cluster_t* cluster = _get_cluster_base(header);
	1104	mapping_vspace_t* vspace = _get_vspace_base(header);
	1105	mapping_task_t* task = _get_task_base(header);
	1106	mapping_vobj_t* vobj = _get_vobj_base(header);
[295]	1107	mapping_periph_t* periph = _get_periph_base(header);
[258]	1108	mapping_irq_t* irq = _get_irq_base(header);
	1109
	1110	unsigned int cluster_id; // cluster index in mapping_info
[295]	1111	unsigned int periph_id; // peripheral index in mapping_info
[258]	1112	unsigned int irq_id; // irq index in mapping_info
	1113	unsigned int vspace_id; // vspace index in mapping_info
	1114	unsigned int task_id; // task index in mapping_info
[321]	1115	unsigned int vobj_id; // vobj index in mapping_info
[258]	1116
[321]	1117	unsigned int lpid; // local processor index (for several loops)
	1118
[436]	1119	// WTI allocators to processors (for HWIs translated to WTIs)
	1120	// In all clusters the first NB_PROCS_MAX WTIs are reserved for WAKUP
[321]	1121	unsigned int alloc_wti_channel[X_SIZE*Y_SIZE]; // one per cluster
[258]	1122
[321]	1123	// pointers on the XCU and PIC peripherals
	1124	mapping_periph_t* xcu = NULL;
	1125	mapping_periph_t* pic = NULL;
	1126
[412]	1127	unsigned int sched_vbase; // schedulers array vbase address in a cluster
	1128	unsigned int sched_length; // schedulers array length
	1129	static_scheduler_t* psched; // pointer on processor scheduler
[321]	1130
[258]	1131	/////////////////////////////////////////////////////////////////////////
	1132	// Step 1 : loop on the clusters and on the processors
	1133	// to initialize the schedulers[] array of pointers,
[412]	1134	// idle task context and interrupt vectors.
[258]	1135	// Implementation note:
[347]	1136	// We need to use both (proc_id) to scan the mapping info structure,
	1137	// and (x,y,lpid) to access the schedulers array.
[258]	1138
[263]	1139	for (cluster_id = 0 ; cluster_id < X_SIZE*Y_SIZE ; cluster_id++)
[258]	1140	{
[263]	1141	unsigned int x = cluster[cluster_id].x;
	1142	unsigned int y = cluster[cluster_id].y;
[258]	1143
	1144	#if BOOT_DEBUG_SCHED
[263]	1145	_puts("\n[BOOT DEBUG] Initialise schedulers in cluster[");
	1146	_putd( x );
	1147	_puts(",");
	1148	_putd( y );
	1149	_puts("]\n");
[258]	1150	#endif
[321]	1151	alloc_wti_channel[cluster_id] = NB_PROCS_MAX;
[258]	1152
	1153	// checking processors number
[295]	1154	if ( cluster[cluster_id].procs > NB_PROCS_MAX )
[258]	1155	{
[263]	1156	_puts("\n[BOOT ERROR] Too much processors in cluster[");
	1157	_putd( x );
	1158	_puts(",");
	1159	_putd( y );
	1160	_puts("]\n");
[258]	1161	_exit();
	1162	}
	1163
[295]	1164	// no schedulers initialisation if nprocs == 0
	1165	if ( cluster[cluster_id].procs > 0 )
[258]	1166	{
[412]	1167	// get scheduler array virtual base address in cluster[cluster_id]
[295]	1168	boot_get_sched_vaddr( cluster_id, &sched_vbase, &sched_length );
[258]	1169
[412]	1170	if ( sched_length < (cluster[cluster_id].procs<<13) ) // 8 Kbytes per scheduler
[295]	1171	{
	1172	_puts("\n[BOOT ERROR] Schedulers segment too small in cluster[");
	1173	_putd( x );
	1174	_puts(",");
	1175	_putd( y );
	1176	_puts("]\n");
	1177	_exit();
	1178	}
[263]	1179
[436]	1180	// scan peripherals to find the XCU and the PIC component
[321]	1181
	1182	xcu = NULL;
[295]	1183	for ( periph_id = cluster[cluster_id].periph_offset ;
	1184	periph_id < cluster[cluster_id].periph_offset + cluster[cluster_id].periphs;
	1185	periph_id++ )
	1186	{
[436]	1187	if( periph[periph_id].type == PERIPH_TYPE_XCU )
[295]	1188	{
[321]	1189	xcu = &periph[periph_id];
	1190
	1191	if ( xcu->arg < cluster[cluster_id].procs )
	1192	{
	1193	_puts("\n[BOOT ERROR] Not enough inputs for XCU[");
	1194	_putd( x );
	1195	_puts(",");
	1196	_putd( y );
	1197	_puts("]\n");
	1198	_exit();
	1199	}
[295]	1200	}
[321]	1201	if( periph[periph_id].type == PERIPH_TYPE_PIC )
	1202	{
	1203	pic = &periph[periph_id];
	1204	}
[295]	1205	}
[321]	1206	if ( xcu == NULL )
[295]	1207	{
[436]	1208	_puts("\n[BOOT ERROR] No XCU component in cluster[");
[295]	1209	_putd( x );
	1210	_puts(",");
	1211	_putd( y );
	1212	_puts("]\n");
	1213	_exit();
	1214	}
	1215
[412]	1216	// loop on processors for schedulers default values
[321]	1217	// initialisation, including WTI and PTI vectors
[295]	1218	for ( lpid = 0 ; lpid < cluster[cluster_id].procs ; lpid++ )
	1219	{
[412]	1220	// pointer on processor scheduler
	1221	psched = (static_scheduler_t*)(sched_vbase + (lpid<<13));
[295]	1222
[412]	1223	// initialise the schedulers pointers array
	1224	_schedulers[x][y][lpid] = psched;
	1225
[258]	1226	#if BOOT_DEBUG_SCHED
[412]	1227	unsigned int sched_vbase = (unsigned int)_schedulers[x][y][lpid];
	1228	unsigned int sched_ppn;
	1229	unsigned int sched_flags;
	1230	paddr_t sched_pbase;
	1231
	1232	page_table_t* ptab = (page_table_t*)(_ptabs_vaddr[0][x][y]);
	1233	_v2p_translate( ptab, sched_vbase>>12, &sched_ppn, &sched_flags );
	1234	sched_pbase = ((paddr_t)sched_ppn)<<12;
	1235
[295]	1236	_puts("\nProc[");
[263]	1237	_putd( x );
[295]	1238	_puts(",");
[263]	1239	_putd( y );
[295]	1240	_puts(",");
[263]	1241	_putd( lpid );
[412]	1242	_puts("] : scheduler vbase = ");
	1243	_putx( sched_vbase );
	1244	_puts(" : scheduler pbase = ");
	1245	_putl( sched_pbase );
[258]	1246	_puts("\n");
	1247	#endif
[295]	1248	// initialise the "tasks" and "current" variables default values
[412]	1249	psched->tasks = 0;
	1250	psched->current = IDLE_TASK_INDEX;
[258]	1251
[321]	1252	// default values for HWI / PTI / SWI vectors (valid bit = 0)
[295]	1253	unsigned int slot;
	1254	for (slot = 0; slot < 32; slot++)
	1255	{
[412]	1256	psched->hwi_vector[slot] = 0;
	1257	psched->pti_vector[slot] = 0;
	1258	psched->wti_vector[slot] = 0;
[295]	1259	}
[258]	1260
[321]	1261	// WTI[lpid] <= ISR_WAKUP / PTI[lpid] <= ISR_TICK
[412]	1262	psched->wti_vector[lpid] = ISR_WAKUP \| 0x80000000;
	1263	psched->pti_vector[lpid] = ISR_TICK \| 0x80000000;
[321]	1264
[295]	1265	// initializes the idle_task context in scheduler:
	1266	// - the SR slot is 0xFF03 because this task run in kernel mode.
	1267	// - it uses the page table of vspace[0]
	1268	// - it uses the kernel TTY terminal
[392]	1269	// - slots containing addresses (SP, RA, EPC)
	1270	// must be initialised by kernel_init()
[258]	1271
[412]	1272	psched->context[IDLE_TASK_INDEX][CTX_CR_ID] = 0;
	1273	psched->context[IDLE_TASK_INDEX][CTX_SR_ID] = 0xFF03;
	1274	psched->context[IDLE_TASK_INDEX][CTX_PTPR_ID] = _ptabs_paddr[0][x][y]>>13;
	1275	psched->context[IDLE_TASK_INDEX][CTX_PTAB_ID] = _ptabs_vaddr[0][x][y];
	1276	psched->context[IDLE_TASK_INDEX][CTX_TTY_ID] = 0;
	1277	psched->context[IDLE_TASK_INDEX][CTX_LTID_ID] = IDLE_TASK_INDEX;
	1278	psched->context[IDLE_TASK_INDEX][CTX_VSID_ID] = 0;
	1279	psched->context[IDLE_TASK_INDEX][CTX_RUN_ID] = 1;
	1280
[321]	1281	} // end for processors
[258]	1282
[321]	1283	// scan HWIs connected to local XCU
	1284	// for round-robin allocation to processors
	1285	lpid = 0;
	1286	for ( irq_id = xcu->irq_offset ;
	1287	irq_id < xcu->irq_offset + xcu->irqs ;
[295]	1288	irq_id++ )
[258]	1289	{
[321]	1290	unsigned int type = irq[irq_id].srctype;
	1291	unsigned int srcid = irq[irq_id].srcid;
	1292	unsigned int isr = irq[irq_id].isr & 0xFFFF;
	1293	unsigned int channel = irq[irq_id].channel << 16;
	1294
	1295	if ( (type != IRQ_TYPE_HWI) \|\| (srcid > 31) )
[295]	1296	{
[321]	1297	_puts("\n[BOOT ERROR] Bad IRQ in XCU of cluster[");
[295]	1298	_putd( x );
	1299	_puts(",");
	1300	_putd( y );
	1301	_puts("]\n");
	1302	_exit();
	1303	}
[258]	1304
[412]	1305	_schedulers[x][y][lpid]->hwi_vector[srcid] = isr \| channel \| 0x80000000;
[321]	1306	lpid = (lpid + 1) % cluster[cluster_id].procs;
[258]	1307
[321]	1308	} // end for irqs
	1309	} // end if nprocs > 0
	1310	} // end for clusters
[258]	1311
[321]	1312	// If there is an external PIC component, we scan HWIs connected to PIC
	1313	// for Round Robin allocation (as WTI) to processors.
	1314	// We allocate one WTI per processor, starting from proc[0,0,0],
	1315	// and we increment (cluster_id, lpid) as required.
	1316	if ( pic != NULL )
	1317	{
	1318	unsigned int cluster_id = 0; // index in clusters array
	1319	unsigned int lpid = 0; // processor local index
	1320
	1321	// scan IRQS defined in PIC
	1322	for ( irq_id = pic->irq_offset ;
	1323	irq_id < pic->irq_offset + pic->irqs ;
	1324	irq_id++ )
	1325	{
	1326	// compute next values for (cluster_id,lpid)
	1327	// if no more procesor available in current cluster
	1328	unsigned int overflow = 0;
	1329	while ( (lpid >= cluster[cluster_id].procs) \|\|
	1330	(alloc_wti_channel[cluster_id] >= xcu->arg) )
	1331	{
	1332	overflow++;
	1333	cluster_id = (cluster_id + 1) % (X_SIZE*Y_SIZE);
	1334	lpid = 0;
	1335
	1336	// overflow detection
	1337	if ( overflow > (X_SIZEY_SIZENB_PROCS_MAX*32) )
	1338	{
	1339	_puts("\n[BOOT ERROR] Not enough processors for external IRQs\n");
	1340	_exit();
	1341	}
[460]	1342	} // end while
[321]	1343
	1344	unsigned int type = irq[irq_id].srctype;
	1345	unsigned int srcid = irq[irq_id].srcid;
	1346	unsigned int isr = irq[irq_id].isr & 0xFFFF;
	1347	unsigned int channel = irq[irq_id].channel << 16;
	1348
	1349	if ( (type != IRQ_TYPE_HWI) \|\| (srcid > 31) )
	1350	{
	1351	_puts("\n[BOOT ERROR] Bad IRQ in PIC component\n");
	1352	_exit();
	1353	}
	1354
	1355	// get scheduler[cluster_id] address
	1356	unsigned int x = cluster[cluster_id].x;
	1357	unsigned int y = cluster[cluster_id].y;
	1358	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[412]	1359	psched = _schedulers[x][y][lpid];
[321]	1360
	1361	// update WTI vector for scheduler[cluster_id][lpid]
[412]	1362	unsigned int index = alloc_wti_channel[cluster_id];
	1363	psched->wti_vector[index] = isr \| channel \| 0x80000000;
[460]	1364
	1365	// increment pointers
[321]	1366	alloc_wti_channel[cluster_id] = index + 1;
[412]	1367	lpid = lpid + 1;
[321]	1368
	1369	// update IRQ fields in mapping for PIC initialisation
	1370	irq[irq_id].dest_id = index;
	1371	irq[irq_id].dest_xy = cluster_xy;
	1372
	1373	} // end for IRQs
	1374	} // end if PIC
	1375
[258]	1376	#if BOOT_DEBUG_SCHED
[321]	1377	for ( cluster_id = 0 ; cluster_id < (X_SIZE*Y_SIZE) ; cluster_id++ )
	1378	{
	1379	unsigned int x = cluster[cluster_id].x;
	1380	unsigned int y = cluster[cluster_id].y;
	1381	unsigned int slot;
	1382	unsigned int entry;
	1383	for ( lpid = 0 ; lpid < cluster[cluster_id].procs ; lpid++ )
	1384	{
[412]	1385	psched = _schedulers[x][y][lpid];
	1386
[321]	1387	_puts("\n*** IRQS for proc[");
	1388	_putd( x );
	1389	_puts(",");
	1390	_putd( y );
[329]	1391	_puts(",");
[321]	1392	_putd( lpid );
	1393	_puts("]\n");
	1394	for ( slot = 0 ; slot < 32 ; slot++ )
	1395	{
[412]	1396	entry = psched->hwi_vector[slot];
[321]	1397	if ( entry & 0x80000000 )
	1398	{
	1399	_puts(" - HWI ");
	1400	_putd( slot );
	1401	_puts(" / isrtype = ");
	1402	_putd( entry & 0xFFFF );
	1403	_puts(" / channel = ");
	1404	_putd( (entry >> 16) & 0x7FFF );
	1405	_puts("\n");
	1406	}
	1407	}
	1408	for ( slot = 0 ; slot < 32 ; slot++ )
	1409	{
[412]	1410	entry = psched->wti_vector[slot];
[321]	1411	if ( entry & 0x80000000 )
	1412	{
	1413	_puts(" - WTI ");
	1414	_putd( slot );
	1415	_puts(" / isrtype = ");
	1416	_putd( entry & 0xFFFF );
	1417	_puts(" / channel = ");
	1418	_putd( (entry >> 16) & 0x7FFF );
	1419	_puts("\n");
	1420	}
	1421	}
	1422	for ( slot = 0 ; slot < 32 ; slot++ )
	1423	{
[412]	1424	entry = psched->pti_vector[slot];
[321]	1425	if ( entry & 0x80000000 )
	1426	{
	1427	_puts(" - PTI ");
	1428	_putd( slot );
	1429	_puts(" / isrtype = ");
	1430	_putd( entry & 0xFFFF );
	1431	_puts(" / channel = ");
	1432	_putd( (entry >> 16) & 0x7FFF );
	1433	_puts("\n");
	1434	}
	1435	}
	1436	}
	1437	}
[258]	1438	#endif
	1439
	1440	///////////////////////////////////////////////////////////////////
[295]	1441	// Step 2 : loop on the vspaces and the tasks to complete
	1442	// the schedulers and task contexts initialisation.
[258]	1443
	1444	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
	1445	{
	1446	// We must set the PTPR depending on the vspace, because the start_vector
	1447	// and the stack address are defined in virtual space.
[347]	1448	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[vspace_id][0][0] >> 13) );
[258]	1449
[412]	1450	// loop on the tasks in vspace (task_id is the global index in mapping)
[258]	1451	for (task_id = vspace[vspace_id].task_offset;
	1452	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
	1453	task_id++)
	1454	{
[295]	1455	// compute the cluster coordinates & local processor index
[263]	1456	unsigned int x = cluster[task[task_id].clusterid].x;
	1457	unsigned int y = cluster[task[task_id].clusterid].y;
	1458	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[295]	1459	unsigned int lpid = task[task_id].proclocid;
[263]	1460
[258]	1461	#if BOOT_DEBUG_SCHED
	1462	_puts("\n[BOOT DEBUG] Initialise context for task ");
	1463	_puts( task[task_id].name );
	1464	_puts(" in vspace ");
	1465	_puts( vspace[vspace_id].name );
[309]	1466	_puts("\n");
[258]	1467	#endif
	1468	// compute gpid (global processor index) and scheduler base address
[427]	1469	unsigned int gpid = (cluster_xy << P_WIDTH) + lpid;
[347]	1470	psched = _schedulers[x][y][lpid];
[258]	1471
	1472	// ctx_sr : value required before an eret instruction
	1473	unsigned int ctx_sr = 0x0000FF13;
	1474
	1475	// ctx_ptpr : page table physical base address (shifted by 13 bit)
[347]	1476	unsigned int ctx_ptpr = (unsigned int)(_ptabs_paddr[vspace_id][x][y] >> 13);
[258]	1477
	1478	// ctx_ptab : page_table virtual base address
[412]	1479	unsigned int ctx_ptab = _ptabs_vaddr[vspace_id][x][y];
[258]	1480
	1481	// ctx_epc : Get the virtual address of the memory location containing
	1482	// the task entry point : the start_vector is stored by GCC in the seg_data
	1483	// segment and we must wait the .elf loading to get the entry point value...
[321]	1484	vobj_id = vspace[vspace_id].start_vobj_id;
[412]	1485	unsigned int ctx_epc = vobj[vobj_id].vbase + (task[task_id].startid)*4;
[258]	1486
	1487	// ctx_sp : Get the vobj containing the stack
[321]	1488	vobj_id = task[task_id].stack_vobj_id;
[412]	1489	unsigned int ctx_sp = vobj[vobj_id].vbase + vobj[vobj_id].length;
[258]	1490
	1491	// get local task index in scheduler
	1492	unsigned int ltid = psched->tasks;
	1493
[267]	1494	// get vspace thread index
	1495	unsigned int thread_id = task[task_id].trdid;
	1496
[258]	1497	if (ltid >= IDLE_TASK_INDEX)
	1498	{
	1499	_puts("\n[BOOT ERROR] in boot_schedulers_init() : ");
	1500	_putd( ltid );
	1501	_puts(" tasks allocated to processor ");
	1502	_putd( gpid );
	1503	_puts(" / max is ");
	1504	_putd( IDLE_TASK_INDEX );
	1505	_puts("\n");
	1506	_exit();
	1507	}
	1508
	1509	// update the "tasks" and "current" fields in scheduler:
	1510	// the first task to execute is task 0 as soon as there is at least
	1511	// one task allocated to processor.
	1512	psched->tasks = ltid + 1;
	1513	psched->current = 0;
	1514
[436]	1515	// initializes the task context
[452]	1516	psched->context[ltid][CTX_CR_ID] = 0;
	1517	psched->context[ltid][CTX_SR_ID] = ctx_sr;
	1518	psched->context[ltid][CTX_SP_ID] = ctx_sp;
	1519	psched->context[ltid][CTX_EPC_ID] = ctx_epc;
	1520	psched->context[ltid][CTX_PTPR_ID] = ctx_ptpr;
	1521	psched->context[ltid][CTX_PTAB_ID] = ctx_ptab;
	1522	psched->context[ltid][CTX_LTID_ID] = ltid;
	1523	psched->context[ltid][CTX_GTID_ID] = task_id;
	1524	psched->context[ltid][CTX_TRDID_ID] = thread_id;
	1525	psched->context[ltid][CTX_VSID_ID] = vspace_id;
	1526	psched->context[ltid][CTX_RUN_ID] = 1;
[258]	1527
[452]	1528	psched->context[ltid][CTX_TTY_ID] = 0xFFFFFFFF;
	1529	psched->context[ltid][CTX_CMA_FB_ID] = 0xFFFFFFFF;
	1530	psched->context[ltid][CTX_CMA_RX_ID] = 0xFFFFFFFF;
	1531	psched->context[ltid][CTX_CMA_TX_ID] = 0xFFFFFFFF;
	1532	psched->context[ltid][CTX_NIC_RX_ID] = 0xFFFFFFFF;
	1533	psched->context[ltid][CTX_NIC_TX_ID] = 0xFFFFFFFF;
	1534	psched->context[ltid][CTX_TIM_ID] = 0xFFFFFFFF;
	1535	psched->context[ltid][CTX_HBA_ID] = 0xFFFFFFFF;
[436]	1536
[258]	1537	#if BOOT_DEBUG_SCHED
	1538	_puts("\nTask ");
	1539	_putd( task_id );
[295]	1540	_puts(" allocated to processor[");
[309]	1541	_putd( x );
[295]	1542	_puts(",");
[309]	1543	_putd( y );
[295]	1544	_puts(",");
[309]	1545	_putd( lpid );
[295]	1546	_puts("]\n - ctx[LTID] = ");
[258]	1547	_putd( psched->context[ltid][CTX_LTID_ID] );
	1548	_puts("\n - ctx[SR] = ");
	1549	_putx( psched->context[ltid][CTX_SR_ID] );
	1550	_puts("\n - ctx[SP] = ");
	1551	_putx( psched->context[ltid][CTX_SP_ID] );
	1552	_puts("\n - ctx[EPC] = ");
	1553	_putx( psched->context[ltid][CTX_EPC_ID] );
	1554	_puts("\n - ctx[PTPR] = ");
	1555	_putx( psched->context[ltid][CTX_PTPR_ID] );
	1556	_puts("\n - ctx[PTAB] = ");
	1557	_putx( psched->context[ltid][CTX_PTAB_ID] );
	1558	_puts("\n - ctx[GTID] = ");
[295]	1559	_putx( psched->context[ltid][CTX_GTID_ID] );
[258]	1560	_puts("\n - ctx[VSID] = ");
[295]	1561	_putx( psched->context[ltid][CTX_VSID_ID] );
[267]	1562	_puts("\n - ctx[TRDID] = ");
[295]	1563	_putx( psched->context[ltid][CTX_TRDID_ID] );
[258]	1564	_puts("\n");
	1565	#endif
	1566
	1567	} // end loop on tasks
	1568	} // end loop on vspaces
[412]	1569	} // end boot_schedulers_init()
[258]	1570
	1571	//////////////////////////////////////////////////////////////////////////////////
	1572	// This function loads the map.bin file from block device.
	1573	//////////////////////////////////////////////////////////////////////////////////
	1574	void boot_mapping_init()
	1575	{
[347]	1576	// desactivates IOC interrupt
[289]	1577	_ioc_init( 0 );
[258]	1578
[347]	1579	// open file "map.bin"
[295]	1580	int fd_id = _fat_open( IOC_BOOT_MODE,
[258]	1581	"map.bin",
	1582	0 ); // no creation
	1583	if ( fd_id == -1 )
	1584	{
	1585	_puts("\n[BOOT ERROR] : map.bin file not found \n");
	1586	_exit();
	1587	}
	1588
	1589	#if BOOT_DEBUG_MAPPING
	1590	_puts("\n[BOOT] map.bin file successfully open at cycle ");
	1591	_putd(_get_proctime());
	1592	_puts("\n");
	1593	#endif
	1594
[412]	1595	// get "map.bin" file size (from fat) and check it
[258]	1596	unsigned int size = fat.fd[fd_id].file_size;
[347]	1597
	1598	if ( size > SEG_BOOT_MAPPING_SIZE )
	1599	{
	1600	_puts("\n[BOOT ERROR] : allocated segment too small for map.bin file\n");
	1601	_exit();
	1602	}
	1603
	1604	// load "map.bin" file into buffer
[258]	1605	unsigned int nblocks = size >> 9;
	1606	unsigned int offset = size & 0x1FF;
	1607	if ( offset ) nblocks++;
	1608
[295]	1609	unsigned int ok = _fat_read( IOC_BOOT_MODE,
[258]	1610	fd_id,
[321]	1611	(unsigned int*)SEG_BOOT_MAPPING_BASE,
[258]	1612	nblocks,
	1613	0 ); // offset
	1614	if ( ok == -1 )
	1615	{
	1616	_puts("\n[BOOT ERROR] : unable to load map.bin file \n");
	1617	_exit();
	1618	}
	1619	_fat_close( fd_id );
	1620
[347]	1621	// close file "map.bin"
[258]	1622	boot_mapping_check();
[347]	1623
[258]	1624	} // end boot_mapping_init()
	1625
	1626
[347]	1627	/////////////////////////////////////////////////////////////////////////////////////
	1628	// This function load all loadable segments for one .elf file, identified
	1629	// by the "pathname" argument. Some loadable segments can be copied in several
	1630	// clusters: same virtual address but different physical addresses.
	1631	// - It open the file.
[359]	1632	// - It loads the complete file in the dedicated boot_elf_buffer.
	1633	// - It copies each loadable segments at the virtual address defined in
	1634	// the .elf file, making several copies if the target vseg is not local.
[347]	1635	// - It closes the file.
[359]	1636	// This function is supposed to be executed by processor[0,0,0].
[347]	1637	// Note:
	1638	// We must use physical addresses to reach the destination buffers that
	1639	// can be located in remote clusters. We use either a _physical_memcpy(),
	1640	// or a _dma_physical_copy() if DMA is available.
	1641	//////////////////////////////////////////////////////////////////////////////////////
	1642	void load_one_elf_file( unsigned int is_kernel, // kernel file if non zero
[258]	1643	char* pathname,
[347]	1644	unsigned int vspace_id ) // to scan the proper vspace
[258]	1645	{
[347]	1646	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	1647	mapping_vspace_t * vspace = _get_vspace_base(header);
	1648	mapping_vseg_t * vseg = _get_vseg_base(header);
	1649	mapping_vobj_t * vobj = _get_vobj_base(header);
	1650
[258]	1651	unsigned int seg_id;
	1652
	1653	#if BOOT_DEBUG_ELF
	1654	_puts("\n[BOOT DEBUG] Start searching file ");
	1655	_puts( pathname );
	1656	_puts(" at cycle ");
	1657	_putd( _get_proctime() );
	1658	_puts("\n");
	1659	#endif
	1660
	1661	// open .elf file
[347]	1662	int fd_id = _fat_open( IOC_BOOT_MODE,
[258]	1663	pathname,
	1664	0 ); // no creation
	1665	if ( fd_id < 0 )
	1666	{
	1667	_puts("\n[BOOT ERROR] load_one_elf_file() : ");
	1668	_puts( pathname );
	1669	_puts(" not found\n");
	1670	_exit();
	1671	}
	1672
[359]	1673	// check buffer size versus file size
	1674	if ( fat.fd[fd_id].file_size > GIET_ELF_BUFFER_SIZE )
[258]	1675	{
[460]	1676	_puts("\n[BOOT ERROR] in load_one_elf_file() : ");
[258]	1677	_puts( pathname );
[460]	1678	_puts(" size = ");
	1679	_putx( fat.fd[fd_id].file_size );
	1680	_puts("\n exceeds the GIET_ELF_BUFFERSIZE = ");
	1681	_putx( GIET_ELF_BUFFER_SIZE );
	1682	_puts("\n");
[258]	1683	_exit();
	1684	}
	1685
	1686	// compute number of sectors
	1687	unsigned int nbytes = fat.fd[fd_id].file_size;
	1688	unsigned int nsectors = nbytes>>9;
	1689	if( nbytes & 0x1FF) nsectors++;
	1690
[359]	1691	// load file in elf buffer
[347]	1692	if( _fat_read( IOC_BOOT_MODE,
[258]	1693	fd_id,
[359]	1694	boot_elf_buffer,
[258]	1695	nsectors,
	1696	0 ) != nsectors )
	1697	{
	1698	_puts("\n[BOOT ERROR] load_one_elf_file() : unexpected EOF for file ");
	1699	_puts( pathname );
	1700	_puts("\n");
	1701	_exit();
	1702	}
	1703
	1704	// Check ELF Magic Number in ELF header
[359]	1705	Elf32_Ehdr* elf_header_ptr = (Elf32_Ehdr*)boot_elf_buffer;
[258]	1706
	1707	if ( (elf_header_ptr->e_ident[EI_MAG0] != ELFMAG0) \|\|
	1708	(elf_header_ptr->e_ident[EI_MAG1] != ELFMAG1) \|\|
	1709	(elf_header_ptr->e_ident[EI_MAG2] != ELFMAG2) \|\|
	1710	(elf_header_ptr->e_ident[EI_MAG3] != ELFMAG3) )
	1711	{
	1712	_puts("\n[BOOT ERROR] load_elf() : file ");
	1713	_puts( pathname );
	1714	_puts(" does not use ELF format\n");
	1715	_exit();
	1716	}
	1717
	1718	// get program header table pointer
	1719	unsigned int pht_index = elf_header_ptr->e_phoff;
	1720	if( pht_index == 0 )
	1721	{
	1722	_puts("\n[BOOT ERROR] load_one_elf_file() : file ");
	1723	_puts( pathname );
	1724	_puts(" does not contain loadable segment\n");
	1725	_exit();
	1726	}
[359]	1727	Elf32_Phdr* elf_pht_ptr = (Elf32_Phdr*)(boot_elf_buffer + pht_index);
[258]	1728
	1729	// get number of segments
	1730	unsigned int nsegments = elf_header_ptr->e_phnum;
	1731
[347]	1732	_puts("\n[BOOT] File ");
	1733	_puts( pathname );
	1734	_puts(" loaded at cycle ");
	1735	_putd( _get_proctime() );
	1736	_puts("\n");
[258]	1737
[347]	1738	// Loop on loadable segments in the .elf file
[258]	1739	for (seg_id = 0 ; seg_id < nsegments ; seg_id++)
	1740	{
	1741	if(elf_pht_ptr[seg_id].p_type == PT_LOAD)
	1742	{
	1743	// Get segment attributes
	1744	unsigned int seg_vaddr = elf_pht_ptr[seg_id].p_vaddr;
	1745	unsigned int seg_offset = elf_pht_ptr[seg_id].p_offset;
	1746	unsigned int seg_filesz = elf_pht_ptr[seg_id].p_filesz;
	1747	unsigned int seg_memsz = elf_pht_ptr[seg_id].p_memsz;
	1748
[347]	1749	#if BOOT_DEBUG_ELF
	1750	_puts(" - segment ");
	1751	_putd( seg_id );
	1752	_puts(" / vaddr = ");
	1753	_putx( seg_vaddr );
	1754	_puts(" / file_size = ");
	1755	_putx( seg_filesz );
	1756	_puts("\n");
	1757	#endif
	1758
[258]	1759	if( seg_memsz < seg_filesz )
	1760	{
	1761	_puts("\n[BOOT ERROR] load_one_elf_file() : segment at vaddr = ");
	1762	_putx( seg_vaddr );
	1763	_puts(" in file ");
	1764	_puts( pathname );
[359]	1765	_puts(" has memsz < filesz \n");
[258]	1766	_exit();
	1767	}
	1768
	1769	// fill empty space with 0 as required
	1770	if( seg_memsz > seg_filesz )
	1771	{
	1772	unsigned int i;
[359]	1773	for( i = seg_filesz ; i < seg_memsz ; i++ ) boot_elf_buffer[i+seg_offset] = 0;
[258]	1774	}
	1775
[359]	1776	unsigned int src_vaddr = (unsigned int)boot_elf_buffer + seg_offset;
[258]	1777
[347]	1778	// search all vsegs matching the virtual address
	1779	unsigned int vseg_first;
	1780	unsigned int vseg_last;
	1781	unsigned int vseg_id;
	1782	unsigned int found = 0;
	1783	if ( is_kernel )
	1784	{
	1785	vseg_first = 0;
	1786	vseg_last = header->globals;
	1787	}
	1788	else
	1789	{
	1790	vseg_first = vspace[vspace_id].vseg_offset;
	1791	vseg_last = vseg_first + vspace[vspace_id].vsegs;
	1792	}
	1793
	1794	for ( vseg_id = vseg_first ; vseg_id < vseg_last ; vseg_id++ )
	1795	{
	1796	if ( seg_vaddr == vseg[vseg_id].vbase ) // matching
	1797	{
	1798	found = 1;
	1799
	1800	// get destination buffer physical address and size
	1801	paddr_t seg_paddr = vseg[vseg_id].pbase;
	1802	unsigned int vobj_id = vseg[vseg_id].vobj_offset;
	1803	unsigned int seg_size = vobj[vobj_id].length;
	1804
[258]	1805	#if BOOT_DEBUG_ELF
[347]	1806	_puts(" loaded into vseg ");
	1807	_puts( vseg[vseg_id].name );
	1808	_puts(" at paddr = ");
	1809	_putl( seg_paddr );
	1810	_puts(" (buffer size = ");
	1811	_putx( seg_size );
	1812	_puts(")\n");
[258]	1813	#endif
[347]	1814	// check vseg size
	1815	if ( seg_size < seg_filesz )
	1816	{
	1817	_puts("\n[BOOT ERROR] in load_one_elf_file()\n");
	1818	_puts("vseg ");
	1819	_puts( vseg[vseg_id].name );
	1820	_puts(" is to small for loadable segment ");
	1821	_putx( seg_vaddr );
	1822	_puts(" in file ");
	1823	_puts( pathname );
	1824	_puts(" \n");
	1825	_exit();
	1826	}
[258]	1827
[347]	1828	// copy the segment from boot buffer to destination buffer
	1829	// using DMA channel[0,0,0] if it is available.
	1830	if( NB_DMA_CHANNELS > 0 )
	1831	{
	1832	_dma_physical_copy( 0, // DMA in cluster[0,0]
	1833	0, // DMA channel 0
	1834	(paddr_t)seg_paddr, // destination paddr
	1835	(paddr_t)src_vaddr, // source paddr
	1836	seg_filesz ); // size
	1837	}
	1838	else
	1839	{
	1840	_physical_memcpy( (paddr_t)seg_paddr, // destination paddr
	1841	(paddr_t)src_vaddr, // source paddr
	1842	seg_filesz ); // size
	1843	}
	1844	}
	1845	} // end for vsegs in vspace
	1846
	1847	// check at least one matching vseg
	1848	if ( found == 0 )
[258]	1849	{
[347]	1850	_puts("\n[BOOT ERROR] in load_one_elf_file()\n");
	1851	_puts("vseg for loadable segment ");
	1852	_putx( seg_vaddr );
	1853	_puts(" in file ");
	1854	_puts( pathname );
[436]	1855	_puts(" not found: \n");
	1856	_puts(" check consistency between the .py and .ld files...\n");
[347]	1857	_exit();
[258]	1858	}
	1859	}
[347]	1860	} // end for loadable segments
[258]	1861
	1862	// close .elf file
	1863	_fat_close( fd_id );
	1864
	1865	} // end load_one_elf_file()
	1866
	1867
[347]	1868	/////i////////////////////////////////////////////////////////////////////////////////
[258]	1869	// This function uses the map.bin data structure to load the "kernel.elf" file
[347]	1870	// as well as the various "application.elf" files into memory.
	1871	// - The "preloader.elf" file is not loaded, because it has been burned in the ROM.
	1872	// - The "boot.elf" file is not loaded, because it has been loaded by the preloader.
[295]	1873	// This function scans all vobjs defined in the map.bin data structure to collect
[347]	1874	// all .elf files pathnames, and calls the load_one_elf_file() for each .elf file.
	1875	// As the code can be replicated in several vsegs, the same code can be copied
	1876	// in one or several clusters by the load_one_elf_file() function.
	1877	//////////////////////////////////////////////////////////////////////////////////////
[258]	1878	void boot_elf_load()
	1879	{
[321]	1880	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1881	mapping_vspace_t* vspace = _get_vspace_base( header );
	1882	mapping_vobj_t* vobj = _get_vobj_base( header );
	1883	unsigned int vspace_id;
	1884	unsigned int vobj_id;
	1885	unsigned int found;
	1886
	1887	// Scan all vobjs corresponding to global vsegs,
	1888	// to find the pathname to the kernel.elf file
	1889	found = 0;
	1890	for( vobj_id = 0 ; vobj_id < header->globals ; vobj_id++ )
	1891	{
	1892	if(vobj[vobj_id].type == VOBJ_TYPE_ELF)
	1893	{
	1894	found = 1;
	1895	break;
	1896	}
	1897	}
	1898
	1899	// We need one kernel.elf file
	1900	if (found == 0)
	1901	{
	1902	_puts("[BOOT ERROR] boot_elf_load() : kernel.elf file not found\n");
	1903	_exit();
	1904	}
	1905
[347]	1906	// Load the kernel
	1907	load_one_elf_file( 1, // kernel file
	1908	vobj[vobj_id].binpath, // file pathname
[258]	1909	0 ); // vspace 0
	1910
[347]	1911	// loop on the vspaces, scanning all vobjs in the vspace,
[258]	1912	// to find the pathname of the .elf file associated to the vspace.
	1913	for( vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ )
	1914	{
	1915	// loop on the vobjs in vspace (vobj_id is the global index)
	1916	unsigned int found = 0;
	1917	for (vobj_id = vspace[vspace_id].vobj_offset;
	1918	vobj_id < (vspace[vspace_id].vobj_offset + vspace[vspace_id].vobjs);
	1919	vobj_id++)
	1920	{
	1921	if(vobj[vobj_id].type == VOBJ_TYPE_ELF)
	1922	{
	1923	found = 1;
	1924	break;
	1925	}
	1926	}
	1927
	1928	// We want one .elf file per vspace
	1929	if (found == 0)
	1930	{
	1931	_puts("[BOOT ERROR] boot_elf_load() : .elf file not found for vspace ");
	1932	_puts( vspace[vspace_id].name );
	1933	_puts("\n");
	1934	_exit();
	1935	}
	1936
[347]	1937	load_one_elf_file( 0, // not a kernel file
	1938	vobj[vobj_id].binpath, // file pathname
	1939	vspace_id ); // vspace index
[258]	1940
	1941	} // end for vspaces
	1942
	1943	} // end boot_elf_load()
	1944
	1945	////////////////////////////////////////////////////////////////////////////////
	1946	// This function intializes the periherals and coprocessors, as specified
	1947	// in the mapping_info file.
	1948	////////////////////////////////////////////////////////////////////////////////
	1949	void boot_peripherals_init()
	1950	{
[321]	1951	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[258]	1952	mapping_cluster_t * cluster = _get_cluster_base(header);
	1953	mapping_periph_t * periph = _get_periph_base(header);
	1954	mapping_vobj_t * vobj = _get_vobj_base(header);
	1955	mapping_coproc_t * coproc = _get_coproc_base(header);
	1956	mapping_cp_port_t * cp_port = _get_cp_port_base(header);
[295]	1957	mapping_irq_t * irq = _get_irq_base(header);
[258]	1958
	1959	unsigned int cluster_id;
	1960	unsigned int periph_id;
	1961	unsigned int coproc_id;
	1962	unsigned int cp_port_id;
	1963	unsigned int channel_id;
	1964
[263]	1965	// loop on all physical clusters
	1966	for (cluster_id = 0; cluster_id < X_SIZE*Y_SIZE; cluster_id++)
[258]	1967	{
[263]	1968	// computes cluster coordinates
	1969	unsigned int x = cluster[cluster_id].x;
	1970	unsigned int y = cluster[cluster_id].y;
	1971	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[258]	1972
	1973	#if BOOT_DEBUG_PERI
[329]	1974	_puts("\n[BOOT DEBUG] Peripherals initialisation in cluster[");
[263]	1975	_putd( x );
	1976	_puts(",");
	1977	_putd( y );
[329]	1978	_puts("]\n");
[258]	1979	#endif
	1980
[263]	1981	// loop on peripherals
[258]	1982	for (periph_id = cluster[cluster_id].periph_offset;
	1983	periph_id < cluster[cluster_id].periph_offset +
	1984	cluster[cluster_id].periphs; periph_id++)
	1985	{
	1986	unsigned int type = periph[periph_id].type;
[347]	1987	unsigned int subtype = periph[periph_id].subtype;
[258]	1988	unsigned int channels = periph[periph_id].channels;
	1989
	1990	switch (type)
	1991	{
	1992	case PERIPH_TYPE_IOC: // vci_block_device component
	1993	{
[347]	1994	if ( subtype == PERIPH_SUBTYPE_BDV )
[289]	1995	{
[460]	1996	_bdv_init();
[347]	1997	}
[460]	1998	else if ( subtype == PERIPH_SUBTYPE_HBA )
[347]	1999	{
[460]	2000	for (channel_id = 0; channel_id < channels; channel_id++)
	2001	_hba_init( channel_id );
[347]	2002	}
[460]	2003	else if ( subtype == PERIPH_SUBTYPE_SPI )
[347]	2004	{
[460]	2005	//TODO
[347]	2006	}
[258]	2007	break;
	2008	}
[460]	2009	case PERIPH_TYPE_TTY: // vci_multi_tty component
[263]	2010	{
	2011	for (channel_id = 0; channel_id < channels; channel_id++)
	2012	{
[460]	2013	_tty_init( channel_id );
[263]	2014	}
	2015	break;
	2016	}
[258]	2017	case PERIPH_TYPE_NIC: // vci_multi_nic component
	2018	{
[460]	2019	_nic_global_init( 1, // broadcast accepted
	2020	1, // bypass activated
	2021	0, // tdm non activated
	2022	0 ); // tdm period
[258]	2023	break;
	2024	}
[299]	2025	case PERIPH_TYPE_IOB: // vci_io_bridge component
[258]	2026	{
[299]	2027	if (GIET_USE_IOMMU)
[258]	2028	{
	2029	// TODO
	2030	// get the iommu page table physical address
	2031	// set IOMMU page table address
	2032	// pseg_base[IOB_IOMMU_PTPR] = ptab_pbase;
	2033	// activate IOMMU
	2034	// pseg_base[IOB_IOMMU_ACTIVE] = 1;
	2035	}
	2036	break;
	2037	}
[295]	2038	case PERIPH_TYPE_PIC: // vci_iopic component
	2039	{
[309]	2040	// scan all IRQs defined in mapping for PIC component,
[295]	2041	// and initialises addresses for WTI IRQs
	2042	for ( channel_id = periph[periph_id].irq_offset ;
	2043	channel_id < periph[periph_id].irq_offset + periph[periph_id].irqs ;
	2044	channel_id++ )
	2045	{
[321]	2046	unsigned int hwi_id = irq[channel_id].srcid; // HWI index in PIC
	2047	unsigned int wti_id = irq[channel_id].dest_id; // WTI index in XCU
	2048	unsigned int cluster_xy = irq[channel_id].dest_xy; // XCU coordinates
[295]	2049	unsigned int vaddr;
	2050
	2051	_xcu_get_wti_address( wti_id, &vaddr );
[412]	2052	_pic_init( hwi_id, vaddr, cluster_xy );
[295]	2053
	2054	#if BOOT_DEBUG_PERI
[412]	2055	unsigned int address = _pic_get_register( channel_id, IOPIC_ADDRESS );
	2056	unsigned int extend = _pic_get_register( channel_id, IOPIC_EXTEND );
[295]	2057	_puts(" hwi_index = ");
	2058	_putd( hwi_id );
	2059	_puts(" / wti_index = ");
	2060	_putd( wti_id );
	2061	_puts(" / vaddr = ");
	2062	_putx( vaddr );
	2063	_puts(" in cluster[");
[321]	2064	_putd( cluster_xy >> Y_WIDTH );
[295]	2065	_puts(",");
[321]	2066	_putd( cluster_xy & ((1<<Y_WIDTH)-1) );
[412]	2067	_puts("] / checked_xcu_paddr = ");
	2068	_putl( (paddr_t)address + (((paddr_t)extend)<<32) );
	2069	_puts("\n");
[295]	2070	#endif
	2071	}
	2072	break;
	2073	}
[258]	2074	} // end switch periph type
	2075	} // end for periphs
	2076
	2077	#if BOOT_DEBUG_PERI
[329]	2078	_puts("\n[BOOT DEBUG] Coprocessors initialisation in cluster[");
[263]	2079	_putd( x );
	2080	_puts(",");
	2081	_putd( y );
[329]	2082	_puts("]\n");
[258]	2083	#endif
	2084
[263]	2085	// loop on coprocessors
[258]	2086	for ( coproc_id = cluster[cluster_id].coproc_offset;
	2087	coproc_id < cluster[cluster_id].coproc_offset +
	2088	cluster[cluster_id].coprocs; coproc_id++ )
	2089	{
	2090
	2091	#if BOOT_DEBUG_PERI
	2092	_puts("- coprocessor name : ");
	2093	_puts(coproc[coproc_id].name);
	2094	_puts(" / nb ports = ");
	2095	_putd((unsigned int) coproc[coproc_id].ports);
	2096	_puts("\n");
	2097	#endif
	2098	// loop on the coprocessor ports
	2099	for ( cp_port_id = coproc[coproc_id].port_offset;
	2100	cp_port_id < coproc[coproc_id].port_offset + coproc[coproc_id].ports;
	2101	cp_port_id++ )
	2102	{
[412]	2103	// get global index of associted vobj
[321]	2104	unsigned int vobj_id = cp_port[cp_port_id].mwmr_vobj_id;
[258]	2105
[412]	2106	// get MWMR channel base address
	2107	page_table_t* ptab = (page_table_t*)_ptabs_vaddr[0][x][y];
	2108	unsigned int vbase = vobj[vobj_id].vbase;
	2109	unsigned int ppn;
	2110	unsigned int flags;
	2111	paddr_t pbase;
[258]	2112
[412]	2113	_v2p_translate( ptab,
	2114	vbase>>12 ,
	2115	&ppn,
	2116	&flags );
	2117
	2118	pbase = ((paddr_t)ppn)<<12;
	2119
	2120	// initialise cp_port
[263]	2121	_mwr_hw_init( cluster_xy,
	2122	cp_port_id,
	2123	cp_port[cp_port_id].direction,
[412]	2124	pbase );
[258]	2125	#if BOOT_DEBUG_PERI
	2126	_puts(" port direction: ");
	2127	_putd( (unsigned int)cp_port[cp_port_id].direction );
	2128	_puts(" / mwmr_channel_pbase = ");
[412]	2129	_putl( pbase );
[258]	2130	_puts(" / name = ");
	2131	_puts(vobj[vobj_id].name);
	2132	_puts("\n");
	2133	#endif
	2134	} // end for cp_ports
	2135	} // end for coprocs
	2136	} // end for clusters
	2137	} // end boot_peripherals_init()
	2138
	2139	/////////////////////////////////////////////////////////////////////////
[412]	2140	// This function initialises the physical memory allocators in each
	2141	// cluster containing a RAM pseg.
	2142	/////////////////////////////////////////////////////////////////////////
	2143	void boot_pmem_init()
	2144	{
	2145	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
	2146	mapping_cluster_t* cluster = _get_cluster_base(header);
	2147	mapping_pseg_t* pseg = _get_pseg_base(header);
	2148
	2149	unsigned int cluster_id;
	2150	unsigned int pseg_id;
	2151
	2152	// scan all clusters
	2153	for ( cluster_id = 0 ; cluster_id < X_SIZE*Y_SIZE ; cluster_id++ )
	2154	{
	2155	// scan the psegs in cluster to find first pseg of type RAM
	2156	unsigned int pseg_min = cluster[cluster_id].pseg_offset;
	2157	unsigned int pseg_max = pseg_min + cluster[cluster_id].psegs;
	2158	for ( pseg_id = pseg_min ; pseg_id < pseg_max ; pseg_id++ )
	2159	{
	2160	if ( pseg[pseg_id].type == PSEG_TYPE_RAM )
	2161	{
	2162	unsigned int x = cluster[cluster_id].x;
	2163	unsigned int y = cluster[cluster_id].y;
	2164	unsigned int base = (unsigned int)pseg[pseg_id].base;
	2165	unsigned int size = (unsigned int)pseg[pseg_id].length;
	2166	_pmem_alloc_init( x, y, base, size );
	2167
	2168	#if BOOT_DEBUG_PT
	2169	_puts("\n[BOOT DEBUG] pmem allocator initialised in cluster[");
	2170	_putd( x );
	2171	_puts(",");
	2172	_putd( y );
	2173	_puts("] base = ");
	2174	_putx( base );
	2175	_puts(" / size = ");
	2176	_putx( size );
	2177	_puts("\n");
	2178	#endif
	2179	break;
	2180	}
	2181	}
	2182	}
	2183	} // end boot_pmem_init()
	2184
	2185	/////////////////////////////////////////////////////////////////////////
[258]	2186	// This function is the entry point of the boot code for all processors.
	2187	// Most of this code is executed by Processor 0 only.
	2188	/////////////////////////////////////////////////////////////////////////
[347]	2189	void boot_init()
[258]	2190	{
[321]	2191	mapping_header_t* header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
[295]	2192	mapping_cluster_t* cluster = _get_cluster_base(header);
	2193	unsigned int gpid = _get_procid();
[258]	2194
[263]	2195	if ( gpid == 0 ) // only Processor 0 does it
[258]	2196	{
	2197	_puts("\n[BOOT] boot_init start at cycle ");
	2198	_putd(_get_proctime());
	2199	_puts("\n");
	2200
[460]	2201	// initialises the FAT
	2202	_fat_init( IOC_BOOT_MODE );
	2203
	2204	_puts("\n[BOOT] Fat initialised at cycle ");
	2205	_putd(_get_proctime());
	2206	_puts("\n");
	2207
[347]	2208	// Load the map.bin file into memory and check it
[258]	2209	boot_mapping_init();
	2210
[295]	2211	_puts("\n[BOOT] Mapping \"");
[258]	2212	_puts( header->name );
[295]	2213	_puts("\" loaded at cycle ");
[258]	2214	_putd(_get_proctime());
	2215	_puts("\n");
	2216
[412]	2217	// Initializes the physical memory allocators
	2218	boot_pmem_init();
	2219
	2220	_puts("\n[BOOT] Physical memory allocators initialised at cycle ");
	2221	_putd(_get_proctime());
	2222	_puts("\n");
	2223
[347]	2224	// Build page tables
[436]	2225	boot_ptabs_init();
[258]	2226
[412]	2227	_puts("\n[BOOT] Page tables initialised at cycle ");
	2228	_putd(_get_proctime());
	2229	_puts("\n");
	2230
[347]	2231	// Activate MMU for proc [0,0,0]
	2232	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[0][0][0]>>13) );
[258]	2233	_set_mmu_mode( 0xF );
	2234
[263]	2235	_puts("\n[BOOT] Processor[0,0,0] : MMU activation at cycle ");
[258]	2236	_putd(_get_proctime());
	2237	_puts("\n");
	2238
[347]	2239	// Initialise private vobjs in vspaces
[258]	2240	boot_vobjs_init();
	2241
	2242	_puts("\n[BOOT] Private vobjs initialised at cycle ");
	2243	_putd(_get_proctime());
	2244	_puts("\n");
[452]	2245
[347]	2246	// Initialise schedulers
[258]	2247	boot_schedulers_init();
	2248
[295]	2249	_puts("\n[BOOT] Schedulers initialised at cycle ");
[258]	2250	_putd(_get_proctime());
	2251	_puts("\n");
	2252
[347]	2253	// Set CP0_SCHED register for proc [0,0,0]
	2254	_set_sched( (unsigned int)_schedulers[0][0][0] );
[258]	2255
[347]	2256	// Initialise non replicated peripherals
[258]	2257	boot_peripherals_init();
	2258
[295]	2259	_puts("\n[BOOT] Non replicated peripherals initialised at cycle ");
[258]	2260	_putd(_get_proctime());
	2261	_puts("\n");
	2262
	2263	// Loading all .elf files
	2264	boot_elf_load();
	2265
[295]	2266	// P0 starts all other processors
	2267	unsigned int clusterid, p;
[258]	2268
[295]	2269	for ( clusterid = 0 ; clusterid < X_SIZE*Y_SIZE ; clusterid++ )
[258]	2270	{
[295]	2271	unsigned int nprocs = cluster[clusterid].procs;
[347]	2272	unsigned int x = cluster[clusterid].x;
	2273	unsigned int y = cluster[clusterid].y;
	2274	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
[295]	2275
	2276	for ( p = 0 ; p < nprocs; p++ )
[258]	2277	{
[295]	2278	if ( (nprocs > 0) && ((clusterid != 0) \|\| (p != 0)) )
[258]	2279	{
[366]	2280	_xcu_send_wti( cluster_xy, p, (unsigned int)boot_entry );
[258]	2281	}
	2282	}
	2283	}
[295]	2284
[258]	2285	} // end monoprocessor boot
	2286
[356]	2287	///////////////////////////////////////////////////////////////////////////////
	2288	// Parallel execution starts actually here
	2289	///////////////////////////////////////////////////////////////////////////////
	2290
	2291	// all processor initialise the SCHED register
	2292	// from the _schedulers[x][y][lpid array]
[427]	2293	unsigned int cluster_xy = gpid >> P_WIDTH;
	2294	unsigned int lpid = gpid & ((1<<P_WIDTH)-1);
[347]	2295	unsigned int x = cluster_xy >> Y_WIDTH;
	2296	unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1);
	2297	_set_sched( (unsigned int)_schedulers[x][y][lpid] );
[258]	2298
[347]	2299	// all processors (but Proc[0,0,0]) activate MMU
[263]	2300	if ( gpid != 0 )
[258]	2301	{
[347]	2302	_set_mmu_ptpr( (unsigned int)(_ptabs_paddr[0][x][y]>>13) );
[258]	2303	_set_mmu_mode( 0xF );
	2304	}
	2305
[427]	2306	// all processors reset BEV bit in the status register to use
	2307	// the GIET_VM exception handler instead of the PRELOADER exception handler
	2308	_set_sr( 0 );
	2309
[356]	2310	// all processors jump to kernel_init
	2311	// using the address defined in the giet_vsegs.ld file
[321]	2312	unsigned int kernel_entry = (unsigned int)&kernel_init_vbase;
[258]	2313	asm volatile( "jr %0" ::"r"(kernel_entry) );
	2314
	2315	} // end boot_init()
	2316
	2317
	2318	// Local Variables:
	2319	// tab-width: 4
	2320	// c-basic-offset: 4
	2321	// c-file-offsets:((innamespace . 0)(inline-open . 0))
	2322	// indent-tabs-mode: nil
	2323	// End:
	2324	// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
	2325

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