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boot.c @ 267

Last change on this file since 267 was 204, checked in by alain, 7 years ago

Bug fix in kernel_init
-This line, and those below, will be ignored--

M params.mk
M kernel_config.h
M Makefile
M hdd/virt_hdd.dmg
M tools/bootloader_tsar/boot.c
M kernel/libk/bits.h
M kernel/libk/elf.c
M kernel/libk/xhtab.c
M kernel/libk/elf.h
M kernel/libk/xhtab.h
M kernel/devices/dev_pic.c
M kernel/mm/vmm.c
M kernel/mm/mapper.c
M kernel/mm/mapper.h
M kernel/vfs/devfs.h
M kernel/vfs/vfs.c
M kernel/vfs/vfs.h
M kernel/vfs/devfs.c
M kernel/kern/chdev.h
M kernel/kern/kernel_init.c
M kernel/kern/process.c
M kernel/kern/process.h
M hal/tsar_mips32/core/hal_remote.c
M hal/tsar_mips32/drivers/soclib_pic.c

File size: 36.7 KB

Rev	Line
[6]	1	/*
	2	* boot.c - TSAR bootloader implementation.
	3	*
	4	* Authors : Alain Greiner / Vu Son (2016)
	5	*
	6	* Copyright (c) UPMC Sorbonne Universites
	7	*
	8	* This file is part of ALMOS-MKH.
	9	*
	10	* ALMOS-MKH is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; version 2.0 of the License.
	13	*
	14	* ALMOS-MKH is distributed in the hope that it will be useful, but
	15	* WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with ALMOS-MKH; if not, write to the Free Software Foundation,
	21	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	22	*/
	23
[1]	24	/****************************************************************************
[6]	25	* This file contains the ALMOS-MKH. boot-loader for the TSAR architecture. *
[1]	26	* *
	27	* It supports clusterised shared memory multi-processor architectures, *
[50]	28	* where each processor core is identified by a composite index [cxy,lid] *
[1]	29	* with one physical memory bank per cluster. *
	30	* *
	31	* The 'boot.elf' file (containing the boot-loader binary code) is stored *
[50]	32	* on disk and is loaded into memory by core[0,0] (cxy = 0 / lid = 0), *
	33	* and is copied in each other cluter by the local CP0 (lid = 0]. *
[1]	34	* *
[50]	35	* 1) The boot-loader first phase is executed by core[0,0], while *
[1]	36	* all other cores are waiting in the preloader. *
	37	* It does the following tasks: *
[50]	38	* - load into the memory bank of cluster 0 the 'arch_info.bin' *
[1]	39	* file (containing the hardware architecture description) and the *
	40	* 'kernel.elf' file, at temporary locations, *
	41	* - initializes the 'boot_info_t' structure in cluster(0,0) *
	42	* (there is 1 'boot_info_t' per cluster), which contains both *
	43	* global and cluster specific information that will be used for *
	44	* kernel initialisation. *
	45	* - activate CP0s in all other clusters, using IPIs. *
	46	* - wait completion reports from CP0s on a global barrier. *
	47	* *
	48	* 2) The boot-loader second phase is then executed in parallel by all *
[50]	49	* CP0s (other than core[0,0]). Each CP0 performs the following tasks: *
[1]	50	* - copies into the memory bank of the local cluster the 'boot.elf', *
	51	* the 'arch_info.bin' (at the same addresses as the 'boot.elf' and *
	52	* the 'arch_info.bin' in the memory bank of the cluster(0,0), and *
	53	* the kernel image (at address 0x0), *
	54	* - initializes the 'boot_info_t' structure of the local cluster, *
	55	* - activate all other cores in the same cluster (CPi). *
	56	* - wait local CPi completion reports on a local barrier. *
	57	* - report completion to bscpu on the global barrier. *
	58	* *
	59	* 3) The boot-loader third phase is executed in parallel by all cores. *
	60	* After passing the global barrier the bscpu: *
[50]	61	* - activates the CPi of cluster(0), *
[1]	62	* - blocks on the local barrier waiting for all local CPi to report *
	63	* completion on the local barrier, *
	64	* - moves the local kernel image from the temporary location to the *
	65	* address 0x0, (erasing the preloader code). *
	66	* *
	67	* 4) All cores have finished the boot phase, they jump to the kern_init() *
	68	* function (maybe not at the same time). *
	69	****************************************************************************/
	70
	71	#include <elf-types.h>
[6]	72	#include <hal_types.h>
[1]	73
[13]	74	#include <kernel_config.h>
[1]	75	#include <boot_config.h>
	76
	77	#include <arch_info.h>
	78	#include <boot_info.h>
	79
	80	#include <boot_utils.h>
	81	#include <boot_fat32.h>
	82	#include <boot_bdv_driver.h>
	83	#include <boot_hba_driver.h>
	84	#include <boot_tty_driver.h>
	85
[6]	86	/*****************************************************************************
	87	* Macros.
[1]	88	****************************************************************************/
	89
	90	#define PAGE_ROUND_DOWN(x) ((x) & (~PPM_PAGE_SIZE -1))
	91	#define PAGE_ROUND_UP(x) (((x) + PPM_PAGE_SIZE-1) & \
	92	(~(PPM_PAGE_SIZE-1)))
	93
[6]	94	/*****************************************************************************
	95	* Global variables.
[1]	96	****************************************************************************/
	97
	98	// synchronization variables.
	99
[6]	100	volatile boot_remote_spinlock_t tty0_lock; // protect TTY0 access
	101	volatile boot_remote_barrier_t global_barrier; // synchronize CP0 cores
	102	volatile boot_remote_barrier_t local_barrier; // synchronize cores in one cluster
	103	uint32_t active_cp0s_nr; // number of expected CP0s
	104
	105	// kernel segments layout variables
[1]	106
[6]	107	uint32_t seg_kcode_base; // kcode segment base address
	108	uint32_t seg_kcode_size; // kcode segment size (bytes)
	109	uint32_t seg_kdata_base; // kdata segment base address
	110	uint32_t seg_kdata_size; // kdata segment size (bytes)
	111	uint32_t kernel_entry; // kernel entry point
[1]	112
[6]	113	// address used by the WTI to activate remote CP0s
[1]	114
[6]	115	extern void boot_entry(); // boot_loader entry point
[1]	116
[6]	117	/*********************************************************************************
	118	* This function returns the printable string for each device type
	119	********************************************************************************/
[1]	120	char * device_type_str( uint32_t dev_type )
	121	{
[6]	122	if ( dev_type == DEV_TYPE_RAM_SCL ) return "RAM_SCL";
	123	else if( dev_type == DEV_TYPE_ROM_SCL ) return "ROM_SCL";
	124	else if( dev_type == DEV_TYPE_FBF_SCL ) return "FBF_SCL";
	125	else if( dev_type == DEV_TYPE_IOB_TSR ) return "IOB_TSR";
[1]	126	else if( dev_type == DEV_TYPE_IOC_BDV ) return "IOC_BDV";
	127	else if( dev_type == DEV_TYPE_IOC_HBA ) return "IOC_HBA";
	128	else if( dev_type == DEV_TYPE_IOC_SDC ) return "IOC_SDC";
	129	else if( dev_type == DEV_TYPE_IOC_SPI ) return "IOC_SPI";
	130	else if( dev_type == DEV_TYPE_IOC_RDK ) return "IOC_RDK";
[6]	131	else if( dev_type == DEV_TYPE_MMC_TSR ) return "MMC_TSR";
	132	else if( dev_type == DEV_TYPE_DMA_SCL ) return "DMA_SCL";
	133	else if( dev_type == DEV_TYPE_NIC_CBF ) return "NIC_CBF";
	134	else if( dev_type == DEV_TYPE_TIM_SCL ) return "TIM_SCL";
	135	else if( dev_type == DEV_TYPE_TXT_TTY ) return "TXT_TTY";
	136	else if( dev_type == DEV_TYPE_ICU_XCU ) return "ICU_XCU";
	137	else if( dev_type == DEV_TYPE_PIC_TSR ) return "PIC_TSR";
	138	else return "undefined";
[1]	139	}
	140
[6]	141	/************************************************************************************
[1]	142	* This function loads the arch_info.bin file into the boot cluster memory.
[6]	143	***********************************************************************************/
[1]	144	static void boot_archinfo_load()
	145	{
	146	archinfo_header_t* header = (archinfo_header_t*)ARCHINFO_BASE;
	147
	148	// Load file into memory
	149	if (boot_fat32_load(ARCHINFO_PATHNAME, ARCHINFO_BASE, ARCHINFO_MAX_SIZE))
	150	{
	151	boot_printf("\n[BOOT ERROR]: boot_archinfo_load(): "
	152	"<%s> file not found\n",
	153	ARCHINFO_PATHNAME);
	154	boot_exit();
	155	}
	156
	157	if (header->signature != ARCHINFO_SIGNATURE)
	158	{
	159	boot_printf("\n[BOOT_ERROR]: boot_archinfo_load(): "
	160	"<%s> file signature should be %x\n",
	161	ARCHINFO_PATHNAME, ARCHINFO_SIGNATURE);
	162	boot_exit();
	163	}
	164
	165	#if DEBUG_BOOT_INFO
[6]	166	boot_printf("\n[BOOT INFO] in %s : file %s loaded at address = %x\n",
	167	__FUNCTION__ , ARCHINFO_PATHNAME , ARCHINFO_BASE );
[1]	168	#endif
	169
	170	} // boot_archinfo_load()
	171
[6]	172	/**************************************************************************************
	173	* This function loads the 'kernel.elf' file into the boot cluster memory buffer,
	174	* analyzes it, and places the the two seg_kcode & seg_kdata segments at their final
	175	* physical adresses (just after the preloader zone).
	176	* It set the global variables defining the kernel layout.
	177	*************************************************************************************/
[1]	178	static void boot_kernel_load()
	179	{
[6]	180	Elf32_Ehdr * elf_header; // pointer on kernel.elf header.
	181	Elf32_Phdr * program_header; // pointer on kernel.elf program header.
	182	uint32_t phdr_offset; // program header offset in kernel.elf file.
	183	uint32_t segments_nb; // number of segments in kernel.elf file.
	184	uint32_t seg_src_addr; // segment address in kernel.elf file (source).
	185	uint32_t seg_paddr; // segment local physical address of segment
	186	uint32_t seg_offset; // segment offset in kernel.elf file
	187	uint32_t seg_filesz; // segment size (bytes) in kernel.elf file
	188	uint32_t seg_memsz; // segment size (bytes) in memory image.
	189	bool_t kcode_found; // kcode segment found.
	190	bool_t kdata_found; // kdata segment found.
	191	uint32_t seg_id; // iterator for segments loop.
[1]	192
[6]	193	#if DEBUG_BOOT_ELF
	194	boot_printf("\n[BOOT INFO] %s enters for file %s at cycle %d\n",
	195	__FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
	196	#endif
[1]	197
[6]	198	// Load kernel.elf file into memory buffer
	199	if ( boot_fat32_load(KERNEL_PATHNAME, KERN_BASE, KERN_MAX_SIZE) )
[1]	200	{
[6]	201	boot_printf("\n[BOOT ERROR] in %s : <%s> file not found\n",
[1]	202	KERNEL_PATHNAME);
	203	boot_exit();
	204	}
	205
[6]	206	// get pointer to kernel.elf header
[1]	207	elf_header = (Elf32_Ehdr*)KERN_BASE;
	208
[6]	209	// check signature
[1]	210	if ((elf_header->e_ident[EI_MAG0] != ELFMAG0) \|\|
	211	(elf_header->e_ident[EI_MAG1] != ELFMAG1) \|\|
	212	(elf_header->e_ident[EI_MAG2] != ELFMAG2) \|\|
	213	(elf_header->e_ident[EI_MAG3] != ELFMAG3))
	214	{
	215	boot_printf("\n[BOOT_ERROR]: boot_kernel_load(): "
	216	"<%s> is not an ELF file\n",
	217	KERNEL_PATHNAME);
	218	boot_exit();
	219	}
	220
[6]	221	// Get program header table offset and number of segments
[1]	222	phdr_offset = elf_header->e_phoff;
	223	segments_nb = elf_header->e_phnum;
	224
[6]	225	// Get program header table pointer
[1]	226	program_header = (Elf32_Phdr*)(KERN_BASE + phdr_offset);
	227
[6]	228	// loop on segments
	229	kcode_found = false;
	230	kdata_found = false;
[1]	231	for (seg_id = 0; seg_id < segments_nb; seg_id++)
	232	{
[6]	233	if (program_header[seg_id].p_type == PT_LOAD) // Found one loadable segment
[1]	234	{
[6]	235	// Get segment attributes.
[1]	236	seg_paddr = program_header[seg_id].p_paddr;
	237	seg_offset = program_header[seg_id].p_offset;
	238	seg_filesz = program_header[seg_id].p_filesz;
	239	seg_memsz = program_header[seg_id].p_memsz;
	240
[6]	241	// get segment base address in buffer
[1]	242	seg_src_addr = (uint32_t)KERN_BASE + seg_offset;
	243
[6]	244	// Load segment to its final physical memory address
	245	boot_memcpy( (void*)seg_paddr,
	246	(void*)seg_src_addr,
	247	seg_filesz );
	248
	249	#if DEBUG_BOOT_ELF
	250	boot_printf("\n[BOOT INFO] in %s for file %s : found loadable segment\n"
	251	" base = %x / size = %x\n",
	252	__FUNCTION__ , KERNEL_PATHNAME , seg_paddr , seg_memsz );
	253	#endif
	254
[1]	255	// Fill remaining memory with zero if (filesz < memsz).
[6]	256	if( seg_memsz < seg_filesz )
[1]	257	{
[6]	258	boot_memset( (void*)(seg_paddr + seg_filesz), 0, seg_memsz - seg_filesz);
[1]	259	}
	260
[6]	261	// Note: we suppose that the 'kernel.elf' file contains only 2
	262	// loadable segments ktext & kdata and that the main
	263	// difference between these two is the WRITE permission: ktext
	264	// contains read-only instructions and read_only data,
	265	// while kdata contains writable data.
	266
	267	if ((program_header[seg_id].p_flags & PF_W) == 0) // kcode segment
[1]	268	{
[6]	269	if( kcode_found )
	270	{
	271	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	272	" two loadable kcode segments found\n",
	273	__FUNCTION__ , KERNEL_PATHNAME );
	274	boot_exit();
	275	}
	276
	277	kcode_found = true;
	278	seg_kcode_base = seg_paddr;
	279	seg_kcode_size = seg_memsz;
[1]	280	}
[6]	281	else // kdata segment
	282	{
	283	if( kdata_found )
	284	{
	285	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	286	" two loadable kdata segments found\n",
	287	__FUNCTION__ , KERNEL_PATHNAME );
	288	boot_exit();
	289	}
	290
	291	kdata_found = true;
	292	seg_kdata_base = seg_paddr;
	293	seg_kdata_size = seg_memsz;
	294	}
[1]	295	}
	296	}
	297
[6]	298	// check kcode & kdata segments found
	299	if( kcode_found == false )
	300	{
	301	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	302	" kcode segment not found\n",
	303	__FUNCTION__ , KERNEL_PATHNAME );
	304	boot_exit();
	305	}
	306	if( kdata_found == false )
	307	{
	308	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	309	" kdata segment not found\n",
	310	__FUNCTION__ , KERNEL_PATHNAME );
	311	boot_exit();
	312	}
	313
	314	// set entry point
[1]	315	kernel_entry = (uint32_t)elf_header->e_entry;
	316
[6]	317	#if DEBUG_BOOT_ELF
	318	boot_printf("\n[BOOT INFO] %s successfully completed for file %s at cycle %d\n",
	319	__FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
	320	#endif
	321
[1]	322	} // boot_kernel_load()
	323
[6]	324	/*************************************************************************************
	325	* This function initializes the boot_info_t structure for a given cluster.
	326	* @ boot_info : pointer to local boot_info_t structure
	327	* @ cxy : cluster identifier
	328	************************************************************************************/
[1]	329	static void boot_info_init( boot_info_t * boot_info,
	330	cxy_t cxy )
	331	{
[6]	332	archinfo_header_t * header;
[1]	333	archinfo_core_t * core_base;
	334	archinfo_cluster_t * cluster_base;
	335	archinfo_device_t * device_base;
	336	archinfo_irq_t * irq_base;
	337
	338	archinfo_cluster_t * cluster;
[6]	339	archinfo_cluster_t * my_cluster = NULL; // target cluster
	340	archinfo_cluster_t * io_cluster = NULL; // cluster containing ext. peripherals
	341
[1]	342	archinfo_core_t * core;
	343	uint32_t core_id;
	344	archinfo_device_t * device;
	345	uint32_t device_id;
	346	archinfo_irq_t * irq;
	347	uint32_t irq_id;
[50]	348	uint32_t end;
[1]	349	boot_device_t * boot_dev;
	350
[6]	351	// get pointer on ARCHINFO header and on the four arch_info arrays
	352	header = (archinfo_header_t*)ARCHINFO_BASE;
	353	core_base = archinfo_get_core_base (header);
	354	cluster_base = archinfo_get_cluster_base(header);
	355	device_base = archinfo_get_device_base (header);
	356	irq_base = archinfo_get_irq_base (header);
	357
[1]	358	// Initialize global platform parameters
	359	boot_info->x_size = header->x_size;
	360	boot_info->y_size = header->y_size;
	361	boot_info->x_width = header->x_width;
	362	boot_info->y_width = header->y_width;
	363	boot_info->paddr_width = header->paddr_width;
	364	boot_info->io_cxy = header->io_cxy;
	365
[50]	366	// Initialize kernel segments from global variables
[6]	367	boot_info->kernel_code_start = seg_kcode_base;
	368	boot_info->kernel_code_end = seg_kcode_base + seg_kcode_size;
	369	boot_info->kernel_data_start = seg_kdata_base;
	370	boot_info->kernel_data_end = seg_kdata_base + seg_kdata_size;
[1]	371
[6]	372	// loop on arch_info clusters to get relevant pointers
[1]	373	for (cluster = cluster_base;
	374	cluster < &cluster_base[header->x_size * header->y_size];
	375	cluster++)
	376	{
[6]	377	if( cluster->cxy == cxy ) my_cluster = cluster;
	378	if( cluster->cxy == header->io_cxy ) io_cluster = cluster;
	379	}
[1]	380
[6]	381	if( my_cluster == NULL )
	382	{
	383	boot_printf("\n[ERROR] in %s : cannot found cluster %x in arch_info\n",
	384	__FUNCTION__ , cxy );
	385	boot_exit();
	386	}
[1]	387
[6]	388	if( io_cluster == NULL )
	389	{
	390	boot_printf("\n[ERROR] in %s : cannot found io_cluster %x in arch_info\n",
	391	__FUNCTION__ , header->io_cxy );
	392	boot_exit();
	393	}
	394
[204]	395	//////////////////////////////////////////////////////////
	396	// initialize the boot_info array of external peripherals
[6]	397
[1]	398	#if DEBUG_BOOT_INFO
[13]	399	boot_printf("\n[BOOT INFO] %s : external peripherals at cycle %d\n",
[188]	400	__FUNCTION__ , boot_get_proctime() );
[1]	401	#endif
[6]	402
	403	device_id = 0;
	404	for (device = &device_base[io_cluster->device_offset];
	405	device < &device_base[io_cluster->device_offset + io_cluster->devices];
	406	device++ )
	407	{
[188]	408	if( device_id >= CONFIG_MAX_EXT_DEV )
	409	{
	410	boot_printf("\n[ERROR] in %s : too much external devices in arch_info\n",
	411	__FUNCTION__ );
	412	boot_exit();
	413	}
	414
	415	// keep only external devices
[6]	416	if( (device->type != DEV_TYPE_RAM_SCL) &&
	417	(device->type != DEV_TYPE_ICU_XCU) &&
	418	(device->type != DEV_TYPE_MMC_TSR) &&
	419	(device->type != DEV_TYPE_DMA_SCL) )
[1]	420	{
[6]	421	boot_dev = &boot_info->ext_dev[device_id];
[1]	422
[6]	423	boot_dev->type = device->type;
	424	boot_dev->base = device->base;
	425	boot_dev->channels = device->channels;
	426	boot_dev->param0 = device->arg0;
	427	boot_dev->param1 = device->arg1;
	428	boot_dev->param2 = device->arg2;
	429	boot_dev->param3 = device->arg3;
	430	boot_dev->irqs = device->irqs;
	431
	432	device_id++;
	433
[1]	434	#if DEBUG_BOOT_INFO
[6]	435	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
	436	device_type_str( device->type ) , device->base , device->size ,
	437	device->channels , device->irqs );
[1]	438	#endif
[13]	439	}
[6]	440
[188]	441	// handle IRQs for PIC
[6]	442	if (device->type == DEV_TYPE_PIC_TSR)
	443	{
[188]	444	for (irq_id = 0; irq_id < CONFIG_MAX_EXTERNAL_IRQS ; irq_id++)
[6]	445	{
	446	boot_dev->irq[irq_id].valid = 0;
	447	}
[1]	448
[6]	449	for (irq = &irq_base[device->irq_offset];
	450	irq < &irq_base[device->irq_offset + device->irqs];
	451	irq++)
	452	{
	453	boot_dev->irq[irq->port].valid = 1;
	454	boot_dev->irq[irq->port].dev_type = irq->dev_type;
	455	boot_dev->irq[irq->port].channel = irq->channel;
	456	boot_dev->irq[irq->port].is_rx = irq->is_rx;
	457
	458	#if DEBUG_BOOT_INFO
	459	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
	460	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
	461	#endif
	462	}
[1]	463	}
[13]	464	} // end loop on io_cluster peripherals
[1]	465
[6]	466	// initialize number of external peripherals
	467	boot_info->ext_dev_nr = device_id;
	468
	469	// Initialize cluster specific resources
	470	boot_info->cxy = my_cluster->cxy;
	471
	472	#if DEBUG_BOOT_INFO
[188]	473	boot_printf("\n[BOOT INFO] %s : cores in cluster %x\n", __FUNCTION__ , cxy );
[6]	474	#endif
	475
[188]	476	////////////////////////////////////////
[6]	477	// Initialize array of core descriptors
	478	core_id = 0;
	479	for (core = &core_base[my_cluster->core_offset];
	480	core < &core_base[my_cluster->core_offset + my_cluster->cores];
	481	core++ )
	482	{
	483	boot_info->core[core_id].gid = (gid_t)core->gid;
	484	boot_info->core[core_id].lid = (lid_t)core->lid;
	485	boot_info->core[core_id].cxy = (cxy_t)core->cxy;
	486
	487	#if DEBUG_BOOT_INFO
	488	boot_printf(" - core_gid = %x : cxy = %x / lid = %d\n",
	489	core->gid , core->cxy , core->lid );
	490	#endif
	491	core_id++;
	492	}
	493
	494	// Initialize number of cores in my_cluster
	495	boot_info->cores_nr = core_id;
	496
[188]	497	//////////////////////////////////////////////////////////////////////
	498	// initialise boot_info array of internal devices (RAM, ICU, MMC, DMA)
[6]	499
	500	#if DEBUG_BOOT_INFO
[188]	501	boot_printf("\n[BOOT INFO] %s : internal peripherals in cluster %x\n", __FUNCTION__ , cxy );
[6]	502	#endif
	503
[188]	504	device_id = 0;
[6]	505	for (device = &device_base[my_cluster->device_offset];
	506	device < &device_base[my_cluster->device_offset + my_cluster->devices];
	507	device++ )
	508	{
[188]	509	// keep only internal devices
	510	if( (device->type == DEV_TYPE_RAM_SCL) \|\|
	511	(device->type == DEV_TYPE_ICU_XCU) \|\|
	512	(device->type == DEV_TYPE_MMC_TSR) \|\|
	513	(device->type == DEV_TYPE_DMA_SCL) )
[6]	514	{
[188]	515	if (device->type == DEV_TYPE_RAM_SCL) // RAM
	516	{
	517	// set number of physical memory pages
	518	boot_info->pages_nr = device->size >> CONFIG_PPM_PAGE_SHIFT;
[6]	519
[1]	520	#if DEBUG_BOOT_INFO
[50]	521	boot_printf(" - RAM : %x pages\n", boot_info->pages_nr );
[1]	522	#endif
[188]	523	}
	524	else // ICU / MMC / DMA
	525	{
	526	if( device_id >= CONFIG_MAX_INT_DEV )
	527	{
	528	boot_printf("\n[ERROR] in %s : too much internal devices in cluster %x\n",
	529	__FUNCTION__ , cxy );
	530	boot_exit();
	531	}
	532
	533	boot_dev = &boot_info->int_dev[device_id];
[13]	534
[188]	535	boot_dev->type = device->type;
	536	boot_dev->base = device->base;
	537	boot_dev->channels = device->channels;
	538	boot_dev->param0 = device->arg0;
	539	boot_dev->param1 = device->arg1;
	540	boot_dev->param2 = device->arg2;
	541	boot_dev->param3 = device->arg3;
	542	boot_dev->irqs = device->irqs;
[13]	543
[188]	544	device_id++;
	545
[13]	546	#if DEBUG_BOOT_INFO
[188]	547	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
	548	device_type_str( device->type ) , device->base , device->size ,
	549	device->channels , device->irqs );
[13]	550	#endif
	551
[188]	552	// handle IRQs for ICU
	553	if (device->type == DEV_TYPE_ICU_XCU)
	554	{
	555	for (irq_id = 0; irq_id < CONFIG_MAX_INTERNAL_IRQS ; irq_id++)
	556	{
	557	boot_dev->irq[irq_id].valid = 0;
	558	}
[1]	559
[188]	560	for (irq = &irq_base[device->irq_offset];
	561	irq < &irq_base[device->irq_offset + device->irqs] ; irq++)
	562	{
	563	boot_dev->irq[irq->port].valid = 1;
	564	boot_dev->irq[irq->port].dev_type = irq->dev_type;
	565	boot_dev->irq[irq->port].channel = irq->channel;
	566	boot_dev->irq[irq->port].is_rx = irq->is_rx;
[1]	567
	568	#if DEBUG_BOOT_INFO
	569	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
	570	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
	571	#endif
	572
[188]	573	}
	574	}
[1]	575	}
	576	}
[188]	577	} // end loop on local peripherals
[1]	578
[204]	579	// initialize number of internal peripherals
[188]	580	boot_info->int_dev_nr = device_id;
[1]	581
[188]	582	// Get the top address of the kernel segments
[50]	583	end = (boot_info->kernel_code_end > boot_info->kernel_data_end ) ?
	584	boot_info->kernel_code_end : boot_info->kernel_data_end;
	585
[68]	586	// Set number of pages occupied by the kernel code
	587	boot_info->pages_offset = ( (end & CONFIG_PPM_PAGE_MASK) == 0 ) ?
[50]	588	(end >> CONFIG_PPM_PAGE_SHIFT) : (end >> CONFIG_PPM_PAGE_SHIFT) + 1;
	589
[68]	590	// No "reserved zones" for the TSAR architecture
	591	boot_info->rsvd_nr = 0;
[50]	592
[6]	593	// set boot_info signature
	594	boot_info->signature = BOOT_INFO_SIGNATURE;
	595
[1]	596	} // boot_info_init()
	597
[6]	598	/***********************************************************************************
	599	* This function check the local boot_info_t structure for a given core.
	600	* @ boot_info : pointer to local 'boot_info_t' structure to be checked.
	601	* @ lid : core local identifier, index the core descriptor table.
	602	**********************************************************************************/
[1]	603	static void boot_check_core( boot_info_t * boot_info,
	604	lid_t lid)
	605	{
	606	gid_t gid; // global hardware identifier of this core
	607	boot_core_t * this; // BOOT_INFO core descriptor of this core.
	608
	609	// Get core hardware identifier
	610	gid = (gid_t)boot_get_procid();
	611
	612	// get pointer on core descriptor
	613	this = &boot_info->core[lid];
	614
	615	if ( (this->gid != gid) \|\| (this->cxy != boot_info->cxy) )
	616	{
	617	boot_printf("\n[BOOT ERROR] in boot_check_core() :\n"
	618	" - boot_info cxy = %x\n"
	619	" - boot_info lid = %d\n"
	620	" - boot_info gid = %x\n"
	621	" - actual gid = %x\n",
	622	this->cxy , this->lid , this->gid , gid );
	623	boot_exit();
	624	}
	625
	626	} // boot_check_core()
	627
[6]	628	/*********************************************************************************
	629	* This function is called by CP0 in cluster(0,0) to activate all other CP0s.
[1]	630	* It returns the number of CP0s actually activated.
[6]	631	********************************************************************************/
	632	static uint32_t boot_wake_all_cp0s()
[1]	633	{
[6]	634	archinfo_header_t* header; // Pointer on ARCHINFO header
	635	archinfo_cluster_t* cluster_base; // Pointer on ARCHINFO clusters base
	636	archinfo_cluster_t* cluster; // Iterator for loop on clusters
	637	archinfo_device_t* device_base; // Pointer on ARCHINFO devices base
	638	archinfo_device_t* device; // Iterator for loop on devices
	639	uint32_t cp0_nb = 0; // CP0s counter
[1]	640
	641	header = (archinfo_header_t*)ARCHINFO_BASE;
	642	cluster_base = archinfo_get_cluster_base(header);
	643	device_base = archinfo_get_device_base (header);
	644
	645	// loop on all clusters
	646	for (cluster = cluster_base;
	647	cluster < &cluster_base[header->x_size * header->y_size];
	648	cluster++)
	649	{
	650	// Skip boot cluster.
	651	if (cluster->cxy == BOOT_CORE_CXY)
	652	continue;
	653
	654	// Skip clusters without core (thus without CP0).
	655	if (cluster->cores == 0)
	656	continue;
	657
	658	// Skip clusters without device (thus without XICU).
	659	if (cluster->devices == 0)
	660	continue;
	661
[6]	662	// search XICU device associated to CP0, and send a WTI to activate it
[1]	663	for (device = &device_base[cluster->device_offset];
	664	device < &device_base[cluster->device_offset + cluster->devices];
	665	device++)
	666	{
[6]	667	if (device->type == DEV_TYPE_ICU_XCU)
[1]	668	{
[6]	669
	670	#if DEBUG_BOOT_WAKUP
	671	boot_printf("\n[BOOT] core[%x][0] activated at cycle %d\n",
	672	cluster->cxy , boot_get_proctime );
	673	#endif
	674
[1]	675	boot_remote_sw((xptr_t)device->base, (uint32_t)boot_entry);
	676	cp0_nb++;
	677	}
	678	}
	679	}
	680	return cp0_nb;
	681
	682	} // boot_wake_cp0()
	683
[6]	684	/*********************************************************************************
[188]	685	* This function is called by all CP0 to activate the other CPi cores.
	686	* @ boot_info : pointer to local 'boot_info_t' structure.
[6]	687	*********************************************************************************/
	688	static void boot_wake_local_cores(boot_info_t * boot_info)
[1]	689	{
[188]	690	unsigned int core_id;
[1]	691
[188]	692	// get pointer on XCU device descriptor in boot_info
	693	boot_device_t * xcu = &boot_info->int_dev[0];
[13]	694
	695	// loop on cores
	696	for (core_id = 1; core_id < boot_info->cores_nr; core_id++)
[1]	697	{
[6]	698
	699	#if DEBUG_BOOT_WAKUP
	700	boot_printf("\n[BOOT] core[%x][%d] activated at cycle %d\n",
	701	boot_info->cxy , core_id , boot_get_proctime() );
	702	#endif
[188]	703	// send an IPI
	704	boot_remote_sw( (xptr_t)(xcu->base + (core_id << 2)) , (uint32_t)boot_entry );
[1]	705	}
	706	} // boot_wake_local_cores()
	707
	708
[6]	709	/*********************************************************************************
[1]	710	* This main function of the boot-loader is called by the boot_entry()
	711	* function, and executed by all cores.
	712	* The arguments values are computed by the boot_entry code.
[6]	713	* @ lid : core local identifier,
[1]	714	* @ cxy : cluster identifier,
[6]	715	*********************************************************************************/
[1]	716	void boot_loader( lid_t lid,
	717	cxy_t cxy )
	718	{
[6]	719	boot_info_t * boot_info; // pointer on local boot_info_t structure
[1]	720
	721	if (lid == 0)
	722	{
[6]	723	/****************************************************
	724	* PHASE A : only CP0 in boot cluster executes it
	725	***************************************************/
[1]	726	if (cxy == BOOT_CORE_CXY)
	727	{
[6]	728	boot_printf("\n[BOOT] core[%x][%d] enters at cycle %d\n",
	729	cxy , lid , boot_get_proctime() );
[1]	730
	731	// Initialize IOC driver
	732	if (USE_IOC_BDV) boot_bdv_init();
	733	else if (USE_IOC_HBA) boot_hba_init();
[6]	734	// else if (USE_IOC_SDC) boot_sdc_init();
	735	// else if (USE_IOC_SPI) boot_spi_init();
[1]	736	else if (!USE_IOC_RDK)
	737	{
[6]	738	boot_printf("\n[BOOT ERROR] in %s : no IOC driver\n");
[1]	739	boot_exit();
	740	}
	741
[6]	742	// Initialize FAT32.
[1]	743	boot_fat32_init();
	744
[6]	745	// Load the 'kernel.elf' file into memory from IOC, and set
	746	// the global variables defining the kernel layout
	747	boot_kernel_load();
	748
	749	boot_printf("\n[BOOT] core[%x][%d] loaded kernel at cycle %d\n",
	750	cxy , lid , boot_get_proctime() );
	751
[1]	752	// Load the arch_info.bin file into memory.
	753	boot_archinfo_load();
	754
[6]	755	// Get local boot_info_t structure base address.
[1]	756	// It is the first structure in the .kdata segment.
[6]	757	boot_info = (boot_info_t *)seg_kdata_base;
[1]	758
[6]	759	// Initialize local boot_info_t structure.
	760	boot_info_init( boot_info , cxy );
	761
	762	// check boot_info signature
[1]	763	if (boot_info->signature != BOOT_INFO_SIGNATURE)
	764	{
[6]	765	boot_printf("\n[BOOT ERROR] in %s reported by core[%x][%d]\n"
	766	" illegal boot_info signature / should be %x\n",
	767	__FUNCTION__ , cxy , lid , BOOT_INFO_SIGNATURE );
[1]	768	boot_exit();
	769	}
	770
[6]	771	boot_printf("\n[BOOT] core[%x][%d] loaded boot_info at cycle %d\n",
	772	cxy , lid , boot_get_proctime() );
[1]	773
	774	// Check core information.
	775	boot_check_core(boot_info, lid);
	776
[6]	777	// Activate other CP0s / get number of active CP0s
	778	active_cp0s_nr = boot_wake_all_cp0s() + 1;
[1]	779
[6]	780	// Wait until all clusters (i.e all CP0s) ready to enter kernel.
	781	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) ,
	782	active_cp0s_nr );
[1]	783
[6]	784	// activate other local cores
	785	boot_wake_local_cores( boot_info );
[1]	786
[6]	787	// Wait until all local cores in cluster ready
	788	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
	789	boot_info->cores_nr );
[1]	790	}
[6]	791	/******************************************************************
	792	* PHASE B : all CP0s other than CP0 in boot cluster execute it
	793	*****************************************************************/
[1]	794	else
	795	{
[6]	796	// at this point, all INSTRUCTION address extension registers
	797	// point on cluster(0,0), but the DATA extension registers point
	798	// already on the local cluster to use the local stack.
	799	// To access the bootloader global variables we must first copy
	800	// the boot code (data and instructions) in the local cluster.
	801	boot_remote_memcpy( XPTR( cxy , BOOT_BASE ),
	802	XPTR( BOOT_CORE_CXY , BOOT_BASE ),
	803	BOOT_MAX_SIZE );
[1]	804
[6]	805	// from now, it is safe to refer to the boot code global variables
	806	boot_printf("\n[BOOT] core[%x][%d] replicated boot code at cycle %d\n",
	807	cxy , lid , boot_get_proctime() );
[1]	808
[6]	809	// switch to the INSTRUCTION local memory space, to avoid contention.
[1]	810	asm volatile("mtc2 %0, $25" :: "r"(cxy));
	811
[6]	812	// Copy the arch_info.bin file into the local memory.
[1]	813	boot_remote_memcpy(XPTR(cxy, ARCHINFO_BASE),
	814	XPTR(BOOT_CORE_CXY, ARCHINFO_BASE),
[6]	815	ARCHINFO_MAX_SIZE );
[1]	816
[6]	817	boot_printf("\n[BOOT] core[%x][%d] replicated arch_info at cycle %d\n",
	818	cxy , lid , boot_get_proctime() );
[1]	819
[6]	820	// Copy the kcode segment into local memory
	821	boot_remote_memcpy( XPTR( cxy , seg_kcode_base ),
	822	XPTR( BOOT_CORE_CXY , seg_kcode_base ),
	823	seg_kcode_size );
[1]	824
[6]	825	// Copy the kdata segment into local memory
	826	boot_remote_memcpy( XPTR( cxy , seg_kdata_base ),
	827	XPTR( BOOT_CORE_CXY , seg_kdata_base ),
	828	seg_kdata_size );
	829
	830	boot_printf("\n[BOOT] core[%x][%d] replicated kernel code at cycle %d\n",
	831	cxy , lid , boot_get_proctime() );
	832
	833	// Get local boot_info_t structure base address.
	834	boot_info = (boot_info_t*)seg_kdata_base;
	835
[1]	836	// Initialize local boot_info_t structure.
[6]	837	boot_info_init( boot_info , cxy );
[1]	838
	839	// Check core information.
[6]	840	boot_check_core( boot_info , lid );
[1]	841
[6]	842	// get number of active clusters from BOOT_CORE cluster
	843	uint32_t count = boot_remote_lw( XPTR( BOOT_CORE_CXY , &active_cp0s_nr ) );
[1]	844
[6]	845	// Wait until all clusters (i.e all CP0s) ready to enter kernel
	846	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) , count );
[1]	847
[6]	848	// activate other local cores
	849	boot_wake_local_cores( boot_info );
	850
	851	// Wait until all local cores in cluster ready
	852	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
	853	boot_info->cores_nr );
[1]	854	}
	855	}
	856	else
	857	{
	858	/***************************************************************
[6]	859	* PHASE C: all non CP0 cores in all clusters execute it
[1]	860	**************************************************************/
	861
[6]	862	// Switch to the INSTRUCTIONS local memory space
	863	// to avoid contention at the boot cluster.
	864	asm volatile("mtc2 %0, $25" :: "r"(cxy));
[1]	865
[6]	866	// Get local boot_info_t structure base address.
	867	boot_info = (boot_info_t *)seg_kdata_base;
[1]	868
[6]	869	// Check core information
	870	boot_check_core(boot_info, lid);
[1]	871
[6]	872	// Wait until all local cores in cluster ready
	873	boot_remote_barrier( XPTR( cxy , &local_barrier ) , boot_info->cores_nr );
[1]	874	}
	875
[13]	876	// Ech core compute stack pointer to the kernel idle-thread descriptor.
	877	// The array of idle-thread descriptors is allocated in the kdata segment,
	878	// just after the boot_info structure
[1]	879
[13]	880	uint32_t sp;
	881	uint32_t base;
	882	uint32_t offset = sizeof( boot_info_t );
	883	uint32_t pmask = CONFIG_PPM_PAGE_MASK;
	884	uint32_t psize = CONFIG_PPM_PAGE_SIZE;
	885
	886	// compute base address of idle thread descriptors array
	887	if( offset & pmask ) base = seg_kdata_base + (offset & ~pmask) + psize;
	888	else base = seg_kdata_base + offset;
	889
	890	// compute stack pointer
	891	sp = base + ((lid + 1) * CONFIG_THREAD_DESC_SIZE) - 16;
	892
	893	// Each cores initialise stack pointer,
[6]	894	// reset the BEV bit in status register,
	895	// register "boot_info" argument in a0,
	896	// and jump to kernel_entry.
	897	asm volatile( "mfc0 $27, $12 \n"
	898	"lui $26, 0xFFBF \n"
	899	"ori $26, $26, 0xFFFF \n"
	900	"and $27, $27, $26 \n"
	901	"mtc0 $27, $12 \n"
	902	"move $4, %0 \n"
	903	"move $29, %1 \n"
	904	"jr %2 \n"
[13]	905	:: "r"(boot_info) , "r"(sp) , "r"(kernel_entry) );
[6]	906
[1]	907	} // boot_loader()

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source: trunk/tools/bootloader_tsar/boot.c @ 267

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