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source: trunk/boot/tsar_mips32/boot.c @ 556

Last change on this file since 556 was 556, checked in by nicolas.van.phan@…, 6 years ago
Gather LETI-specific macros into hard_config.h
File size: 39.8 KB

Rev	Line
[439]	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
	24	/****************************************************************************
	25	* This file contains the ALMOS-MKH. boot-loader for the TSAR architecture. *
	26	* *
	27	* It supports clusterised shared memory multi-processor architectures, *
	28	* where each processor core is identified by a composite index [cxy,lid] *
	29	* with one physical memory bank per cluster. *
	30	* *
	31	* The 'boot.elf' file (containing the boot-loader binary code) is stored *
	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]. *
	34	* *
	35	* 1) The boot-loader first phase is executed by core[0,0], while *
	36	* all other cores are waiting in the preloader. *
	37	* It does the following tasks: *
	38	* - load into the memory bank of cluster 0 the 'arch_info.bin' *
	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 *
	49	* CP0s (other than core[0,0]). Each CP0 performs the following tasks: *
	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: *
	61	* - activates the CPi of cluster(0), *
	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>
[457]	72	#include <hal_kernel_types.h>
[439]	73
	74	#include <kernel_config.h>
	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>
[547]	84	#include <boot_spi_driver.h>
[439]	85	#include <boot_tty_driver.h>
	86
	87	/*****************************************************************************
	88	* Macros.
	89	****************************************************************************/
	90
	91	#define PAGE_ROUND_DOWN(x) ((x) & (~PPM_PAGE_SIZE -1))
	92	#define PAGE_ROUND_UP(x) (((x) + PPM_PAGE_SIZE-1) & \
	93	(~(PPM_PAGE_SIZE-1)))
	94
	95	/*****************************************************************************
	96	* Global variables.
	97	****************************************************************************/
	98
	99	// synchronization variables.
	100
	101	volatile boot_remote_spinlock_t tty0_lock; // protect TTY0 access
	102	volatile boot_remote_barrier_t global_barrier; // synchronize CP0 cores
	103	volatile boot_remote_barrier_t local_barrier; // synchronize cores in one cluster
	104	uint32_t active_cp0s_nr; // number of expected CP0s
	105
	106	// kernel segments layout variables
	107
	108	uint32_t seg_kcode_base; // kcode segment base address
	109	uint32_t seg_kcode_size; // kcode segment size (bytes)
	110	uint32_t seg_kdata_base; // kdata segment base address
	111	uint32_t seg_kdata_size; // kdata segment size (bytes)
	112	uint32_t seg_kentry_base; // kcode segment base address
	113	uint32_t seg_kentry_size; // kcode segment size (bytes)
	114
	115	uint32_t kernel_entry; // kernel entry point
	116
	117	// address used by the WTI to activate remote CP0s
	118
[524]	119	// Functions called by boot_entry.S must be externs.
	120	extern void boot_entry( void ); // boot_loader entry point
	121	extern void boot_loader( lid_t lid, cxy_t cxy );
[439]	122
	123	/*********************************************************************************
	124	* This function returns the printable string for each device type
	125	********************************************************************************/
[534]	126	static const char * device_type_str( boot_device_types_t dev_type ) {
	127	switch (dev_type) {
	128	case DEV_TYPE_RAM_SCL: return "RAM_SCL";
	129	case DEV_TYPE_ROM_SCL: return "ROM_SCL";
	130	case DEV_TYPE_FBF_SCL: return "FBF_SCL";
	131	case DEV_TYPE_IOB_TSR: return "IOB_TSR";
	132	case DEV_TYPE_IOC_BDV: return "IOC_BDV";
	133	case DEV_TYPE_IOC_HBA: return "IOC_HBA";
	134	case DEV_TYPE_IOC_SDC: return "IOC_SDC";
	135	case DEV_TYPE_IOC_SPI: return "IOC_SPI";
	136	case DEV_TYPE_IOC_RDK: return "IOC_RDK";
	137	case DEV_TYPE_MMC_TSR: return "MMC_TSR";
	138	case DEV_TYPE_DMA_SCL: return "DMA_SCL";
	139	case DEV_TYPE_NIC_CBF: return "NIC_CBF";
	140	case DEV_TYPE_TIM_SCL: return "TIM_SCL";
	141	case DEV_TYPE_TXT_TTY: return "TXT_TTY";
	142	case DEV_TYPE_ICU_XCU: return "ICU_XCU";
	143	case DEV_TYPE_PIC_TSR: return "PIC_TSR";
	144	default: return "undefined";
	145	}
[439]	146	}
	147
	148	/************************************************************************************
	149	* This function loads the arch_info.bin file into the boot cluster memory.
	150	***********************************************************************************/
[474]	151	static void boot_archinfo_load( void )
[439]	152	{
	153	archinfo_header_t* header = (archinfo_header_t*)ARCHINFO_BASE;
	154
	155	// Load file into memory
	156	if (boot_fat32_load(ARCHINFO_PATHNAME, ARCHINFO_BASE, ARCHINFO_MAX_SIZE))
	157	{
	158	boot_printf("\n[BOOT ERROR]: boot_archinfo_load(): "
	159	"<%s> file not found\n",
	160	ARCHINFO_PATHNAME);
	161	boot_exit();
	162	}
	163
	164	if (header->signature != ARCHINFO_SIGNATURE)
	165	{
	166	boot_printf("\n[BOOT_ERROR]: boot_archinfo_load(): "
	167	"<%s> file signature should be %x\n",
	168	ARCHINFO_PATHNAME, ARCHINFO_SIGNATURE);
	169	boot_exit();
	170	}
	171
	172	#if DEBUG_BOOT_INFO
	173	boot_printf("\n[BOOT INFO] in %s : file %s loaded at address = %x\n",
	174	__FUNCTION__ , ARCHINFO_PATHNAME , ARCHINFO_BASE );
	175	#endif
	176
	177	} // boot_archinfo_load()
	178
	179	/**************************************************************************************
	180	* This function loads the 'kernel.elf' file into the boot cluster memory buffer,
	181	* analyzes it, and places the three kcode, kentry, kdata segments at their final
	182	* physical adresses (defined the .elf file).
	183	* It set the global variables defining the kernel layout.
	184	*************************************************************************************/
[474]	185	static void boot_kernel_load( void )
[439]	186	{
	187	Elf32_Ehdr * elf_header; // pointer on kernel.elf header.
	188	Elf32_Phdr * program_header; // pointer on kernel.elf program header.
	189	uint32_t phdr_offset; // program header offset in kernel.elf file.
	190	uint32_t segments_nb; // number of segments in kernel.elf file.
	191	uint32_t seg_src_addr; // segment address in kernel.elf file (source).
	192	uint32_t seg_paddr; // segment local physical address of segment
	193	uint32_t seg_offset; // segment offset in kernel.elf file
	194	uint32_t seg_filesz; // segment size (bytes) in kernel.elf file
	195	uint32_t seg_memsz; // segment size (bytes) in memory image.
	196	bool_t kcode_found; // kcode segment found.
	197	bool_t kdata_found; // kdata segment found.
	198	bool_t kentry_found; // kentry segment found.
	199	uint32_t seg_id; // iterator for segments loop.
	200
	201	#if DEBUG_BOOT_ELF
	202	boot_printf("\n[BOOT INFO] %s enters for file %s at cycle %d\n",
	203	__FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
	204	#endif
	205
	206	// Load kernel.elf file into memory buffer
	207	if ( boot_fat32_load(KERNEL_PATHNAME, KERN_BASE, KERN_MAX_SIZE) )
	208	{
	209	boot_printf("\n[BOOT ERROR] in %s : <%s> file not found\n",
	210	KERNEL_PATHNAME);
	211	boot_exit();
	212	}
	213
	214	// get pointer to kernel.elf header
	215	elf_header = (Elf32_Ehdr*)KERN_BASE;
	216
	217	// check signature
	218	if ((elf_header->e_ident[EI_MAG0] != ELFMAG0) \|\|
	219	(elf_header->e_ident[EI_MAG1] != ELFMAG1) \|\|
	220	(elf_header->e_ident[EI_MAG2] != ELFMAG2) \|\|
	221	(elf_header->e_ident[EI_MAG3] != ELFMAG3))
	222	{
	223	boot_printf("\n[BOOT_ERROR]: boot_kernel_load(): "
	224	"<%s> is not an ELF file\n",
	225	KERNEL_PATHNAME);
	226	boot_exit();
	227	}
	228
	229	// Get program header table offset and number of segments
	230	phdr_offset = elf_header->e_phoff;
	231	segments_nb = elf_header->e_phnum;
	232
	233	// Get program header table pointer
	234	program_header = (Elf32_Phdr*)(KERN_BASE + phdr_offset);
	235
	236	// loop on segments
	237	kcode_found = false;
	238	kdata_found = false;
	239	kentry_found = false;
	240	for (seg_id = 0; seg_id < segments_nb; seg_id++)
	241	{
	242	if (program_header[seg_id].p_type == PT_LOAD) // Found one loadable segment
	243	{
	244	// Get segment attributes.
	245	seg_paddr = program_header[seg_id].p_paddr;
	246	seg_offset = program_header[seg_id].p_offset;
	247	seg_filesz = program_header[seg_id].p_filesz;
	248	seg_memsz = program_header[seg_id].p_memsz;
	249
	250	// get segment base address in buffer
	251	seg_src_addr = (uint32_t)KERN_BASE + seg_offset;
	252
	253	// Load segment to its final physical memory address
	254	boot_memcpy( (void*)seg_paddr,
	255	(void*)seg_src_addr,
	256	seg_filesz );
	257
	258	#if DEBUG_BOOT_ELF
	259	boot_printf("\n[BOOT INFO] in %s for file %s : found loadable segment\n"
	260	" base = %x / size = %x\n",
	261	__FUNCTION__ , KERNEL_PATHNAME , seg_paddr , seg_memsz );
	262	#endif
	263
	264	// Fill remaining memory with zero if (filesz < memsz).
	265	if( seg_memsz < seg_filesz )
	266	{
	267	boot_memset( (void*)(seg_paddr + seg_filesz), 0, seg_memsz - seg_filesz);
	268	}
	269
	270	// Note: we suppose that the 'kernel.elf' file contains exactly
	271	// three loadable segments ktext, kentry, & kdata:
	272	// - the kcode segment is read-only and base == KCODE_BASE
	273	// - the kentry segment is read-only and base == KENTRY_BASE
	274
	275	if( ((program_header[seg_id].p_flags & PF_W) == 0) &&
	276	(program_header[seg_id].p_paddr == KCODE_BASE) ) // kcode segment
	277	{
	278	if( kcode_found )
	279	{
	280	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	281	" two kcode segments found\n",
	282	__FUNCTION__ , KERNEL_PATHNAME );
	283	boot_exit();
	284	}
	285
	286	kcode_found = true;
	287	seg_kcode_base = seg_paddr;
	288	seg_kcode_size = seg_memsz;
	289	}
	290	else if( program_header[seg_id].p_paddr == KENTRY_BASE ) // kentry segment
	291	{
	292	if( kentry_found )
	293	{
	294	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	295	" two kentry segments found\n",
	296	__FUNCTION__ , KERNEL_PATHNAME );
	297	boot_exit();
	298	}
	299
	300	kentry_found = true;
	301	seg_kentry_base = seg_paddr;
	302	seg_kentry_size = seg_memsz;
	303	}
	304	else // kdata segment
	305	{
	306	if( kdata_found )
	307	{
	308	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
	309	" two loadable kdata segments found\n",
	310	__FUNCTION__ , KERNEL_PATHNAME );
	311	boot_exit();
	312	}
	313
	314	kdata_found = true;
	315	seg_kdata_base = seg_paddr;
	316	seg_kdata_size = seg_memsz;
	317	}
	318	}
	319	}
	320
	321	// check kcode & kdata segments found
	322	if( kcode_found == false )
	323	{
	324	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kcode not found\n",
	325	__FUNCTION__ , KERNEL_PATHNAME );
	326	boot_exit();
	327	}
	328	if( kentry_found == false )
	329	{
	330	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kentry not found\n",
	331	__FUNCTION__ , KERNEL_PATHNAME );
	332	boot_exit();
	333	}
	334	if( kdata_found == false )
	335	{
	336	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kdata not found\n",
	337	__FUNCTION__ , KERNEL_PATHNAME );
	338	boot_exit();
	339	}
	340
	341	// check segments sizes
	342	if( seg_kentry_size > KENTRY_MAX_SIZE )
	343	{
	344	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kentry too large\n",
	345	__FUNCTION__ , KERNEL_PATHNAME );
	346	boot_exit();
	347	}
	348
	349	if( (seg_kcode_size + seg_kdata_size) > KCODE_MAX_SIZE )
	350	{
	351	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kcode + seg_kdata too large\n",
	352	__FUNCTION__ , KERNEL_PATHNAME );
	353	}
	354
	355	// set entry point
	356	kernel_entry = (uint32_t)elf_header->e_entry;
	357
	358	#if DEBUG_BOOT_ELF
	359	boot_printf("\n[BOOT INFO] %s completed for file %s at cycle %d\n",
	360	__FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
	361	#endif
	362
	363	} // boot_kernel_load()
	364
	365	/*************************************************************************************
	366	* This function initializes the boot_info_t structure for a given cluster.
	367	* @ boot_info : pointer to local boot_info_t structure
	368	* @ cxy : cluster identifier
	369	************************************************************************************/
	370	static void boot_info_init( boot_info_t * boot_info,
	371	cxy_t cxy )
	372	{
	373	archinfo_header_t * header;
	374	archinfo_core_t * core_base;
	375	archinfo_cluster_t * cluster_base;
	376	archinfo_device_t * device_base;
	377	archinfo_irq_t * irq_base;
	378
	379	archinfo_cluster_t * cluster;
	380	archinfo_cluster_t * my_cluster = NULL; // target cluster
	381	archinfo_cluster_t * io_cluster = NULL; // cluster containing ext. peripherals
	382
	383	archinfo_core_t * core;
	384	uint32_t core_id;
	385	archinfo_device_t * device;
	386	uint32_t device_id;
	387	archinfo_irq_t * irq;
	388	uint32_t irq_id;
	389	uint32_t end;
	390	boot_device_t * boot_dev;
	391
	392	// get pointer on ARCHINFO header and on the four arch_info arrays
	393	header = (archinfo_header_t*)ARCHINFO_BASE;
	394	core_base = archinfo_get_core_base (header);
	395	cluster_base = archinfo_get_cluster_base(header);
	396	device_base = archinfo_get_device_base (header);
	397	irq_base = archinfo_get_irq_base (header);
	398
	399	// Initialize global platform parameters
	400	boot_info->x_size = header->x_size;
	401	boot_info->y_size = header->y_size;
	402	boot_info->x_width = header->x_width;
	403	boot_info->y_width = header->y_width;
[530]	404	boot_info->x_max = header->x_size; // [FIXME]
	405	boot_info->y_max = header->name[5] == 'l' ? header->y_size - 1 : header->y_size; // [FIXME]
[439]	406	boot_info->paddr_width = header->paddr_width;
	407	boot_info->io_cxy = header->io_cxy;
	408
	409	// Initialize kernel segments from global variables
	410	boot_info->kcode_base = seg_kcode_base;
	411	boot_info->kcode_size = seg_kcode_size;
	412	boot_info->kdata_base = seg_kdata_base;
	413	boot_info->kdata_size = seg_kdata_size;
	414	boot_info->kentry_base = seg_kentry_base;
	415	boot_info->kentry_size = seg_kentry_size;
	416
	417	// loop on arch_info clusters to get relevant pointers
	418	for (cluster = cluster_base;
	419	cluster < &cluster_base[header->x_size * header->y_size];
	420	cluster++)
	421	{
	422	if( cluster->cxy == cxy ) my_cluster = cluster;
	423	if( cluster->cxy == header->io_cxy ) io_cluster = cluster;
	424	}
	425
	426	if( my_cluster == NULL )
	427	{
	428	boot_printf("\n[ERROR] in %s : cannot found cluster %x in arch_info\n",
	429	__FUNCTION__ , cxy );
	430	boot_exit();
	431	}
	432
	433	if( io_cluster == NULL )
	434	{
	435	boot_printf("\n[ERROR] in %s : cannot found io_cluster %x in arch_info\n",
	436	__FUNCTION__ , header->io_cxy );
	437	boot_exit();
	438	}
	439
	440	//////////////////////////////////////////////////////////
	441	// initialize the boot_info array of external peripherals
	442
	443	#if DEBUG_BOOT_INFO
	444	boot_printf("\n[BOOT INFO] %s : external peripherals at cycle %d\n",
	445	__FUNCTION__ , boot_get_proctime() );
	446	#endif
	447
	448	device_id = 0;
	449	for (device = &device_base[io_cluster->device_offset];
	450	device < &device_base[io_cluster->device_offset + io_cluster->devices];
	451	device++ )
	452	{
	453	if( device_id >= CONFIG_MAX_EXT_DEV )
	454	{
	455	boot_printf("\n[ERROR] in %s : too much external devices in arch_info\n",
	456	__FUNCTION__ );
	457	boot_exit();
	458	}
	459
	460	// keep only external devices
	461	if( (device->type != DEV_TYPE_RAM_SCL) &&
	462	(device->type != DEV_TYPE_ICU_XCU) &&
	463	(device->type != DEV_TYPE_MMC_TSR) &&
[550]	464	(device->type != DEV_TYPE_DMA_SCL) &&
	465	(device->type != DEV_TYPE_TXT_MTY) &&
	466	(device->type != DEV_TYPE_IOC_SPI) )
[439]	467	{
	468	boot_dev = &boot_info->ext_dev[device_id];
	469
	470	boot_dev->type = device->type;
	471	boot_dev->base = device->base;
	472	boot_dev->channels = device->channels;
	473	boot_dev->param0 = device->arg0;
	474	boot_dev->param1 = device->arg1;
	475	boot_dev->param2 = device->arg2;
	476	boot_dev->param3 = device->arg3;
	477	boot_dev->irqs = device->irqs;
	478
	479	device_id++;
	480
	481	#if DEBUG_BOOT_INFO
	482	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
	483	device_type_str( device->type ) , device->base , device->size ,
	484	device->channels , device->irqs );
	485	#endif
	486	}
	487
	488	// handle IRQs for PIC
	489	if (device->type == DEV_TYPE_PIC_TSR)
	490	{
	491	for (irq_id = 0; irq_id < CONFIG_MAX_EXTERNAL_IRQS ; irq_id++)
	492	{
	493	boot_dev->irq[irq_id].valid = 0;
	494	}
	495
	496	for (irq = &irq_base[device->irq_offset];
	497	irq < &irq_base[device->irq_offset + device->irqs];
	498	irq++)
	499	{
	500	boot_dev->irq[irq->port].valid = 1;
	501	boot_dev->irq[irq->port].dev_type = irq->dev_type;
	502	boot_dev->irq[irq->port].channel = irq->channel;
	503	boot_dev->irq[irq->port].is_rx = irq->is_rx;
	504
	505	#if DEBUG_BOOT_INFO
	506	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
	507	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
	508	#endif
	509	}
	510	}
	511	} // end loop on io_cluster peripherals
	512
	513	// initialize number of external peripherals
	514	boot_info->ext_dev_nr = device_id;
	515
	516	// Initialize cluster specific resources
	517	boot_info->cxy = my_cluster->cxy;
	518
	519	#if DEBUG_BOOT_INFO
	520	boot_printf("\n[BOOT INFO] %s : cores in cluster %x\n", __FUNCTION__ , cxy );
	521	#endif
	522
	523	////////////////////////////////////////
	524	// Initialize array of core descriptors
	525	core_id = 0;
	526	for (core = &core_base[my_cluster->core_offset];
	527	core < &core_base[my_cluster->core_offset + my_cluster->cores];
	528	core++ )
	529	{
	530	boot_info->core[core_id].gid = (gid_t)core->gid;
	531	boot_info->core[core_id].lid = (lid_t)core->lid;
	532	boot_info->core[core_id].cxy = (cxy_t)core->cxy;
	533
	534	#if DEBUG_BOOT_INFO
	535	boot_printf(" - core_gid = %x : cxy = %x / lid = %d\n",
	536	core->gid , core->cxy , core->lid );
	537	#endif
	538	core_id++;
	539	}
	540
	541	// Initialize number of cores in my_cluster
	542	boot_info->cores_nr = core_id;
	543
	544	//////////////////////////////////////////////////////////////////////
	545	// initialise boot_info array of internal devices (RAM, ICU, MMC, DMA)
	546
	547	#if DEBUG_BOOT_INFO
	548	boot_printf("\n[BOOT INFO] %s : internal peripherals in cluster %x\n", __FUNCTION__ , cxy );
	549	#endif
	550
	551	device_id = 0;
	552	for (device = &device_base[my_cluster->device_offset];
	553	device < &device_base[my_cluster->device_offset + my_cluster->devices];
	554	device++ )
	555	{
	556	// keep only internal devices
	557	if( (device->type == DEV_TYPE_RAM_SCL) \|\|
	558	(device->type == DEV_TYPE_ICU_XCU) \|\|
	559	(device->type == DEV_TYPE_MMC_TSR) \|\|
[534]	560	(device->type == DEV_TYPE_DMA_SCL) \|\|
[550]	561	(device->type == DEV_TYPE_TXT_MTY) \|\|
	562	(device->type == DEV_TYPE_IOC_SPI) )
[439]	563	{
	564	if (device->type == DEV_TYPE_RAM_SCL) // RAM
	565	{
[550]	566	// set number of physical memory pages
[439]	567	boot_info->pages_nr = device->size >> CONFIG_PPM_PAGE_SHIFT;
	568
	569	#if DEBUG_BOOT_INFO
	570	boot_printf(" - RAM : %x pages\n", boot_info->pages_nr );
	571	#endif
	572	}
[534]	573	else // ICU / MMC / DMA / MTY
[439]	574	{
	575	if( device_id >= CONFIG_MAX_INT_DEV )
	576	{
	577	boot_printf("\n[ERROR] in %s : too much internal devices in cluster %x\n",
	578	__FUNCTION__ , cxy );
	579	boot_exit();
	580	}
	581
	582	boot_dev = &boot_info->int_dev[device_id];
	583
	584	boot_dev->type = device->type;
	585	boot_dev->base = device->base;
	586	boot_dev->channels = device->channels;
	587	boot_dev->param0 = device->arg0;
	588	boot_dev->param1 = device->arg1;
	589	boot_dev->param2 = device->arg2;
	590	boot_dev->param3 = device->arg3;
	591	boot_dev->irqs = device->irqs;
	592
	593	device_id++;
	594
	595	#if DEBUG_BOOT_INFO
	596	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
	597	device_type_str( device->type ) , device->base , device->size ,
	598	device->channels , device->irqs );
	599	#endif
	600
	601	// handle IRQs for ICU
	602	if (device->type == DEV_TYPE_ICU_XCU)
	603	{
	604	for (irq_id = 0; irq_id < CONFIG_MAX_INTERNAL_IRQS ; irq_id++)
	605	{
	606	boot_dev->irq[irq_id].valid = 0;
	607	}
	608
	609	for (irq = &irq_base[device->irq_offset];
	610	irq < &irq_base[device->irq_offset + device->irqs] ; irq++)
	611	{
	612	boot_dev->irq[irq->port].valid = 1;
	613	boot_dev->irq[irq->port].dev_type = irq->dev_type;
	614	boot_dev->irq[irq->port].channel = irq->channel;
	615	boot_dev->irq[irq->port].is_rx = irq->is_rx;
	616
	617	#if DEBUG_BOOT_INFO
	618	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
	619	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
	620	#endif
	621
	622	}
	623	}
	624	}
	625	}
	626	} // end loop on local peripherals
	627
	628	// initialize number of internal peripherals
	629	boot_info->int_dev_nr = device_id;
	630
	631	// Get the top address of the kernel segments
	632	end = boot_info->kdata_base + boot_info->kdata_size;
	633
	634	// compute number of physical pages occupied by the kernel code
	635	boot_info->pages_offset = ( (end & CONFIG_PPM_PAGE_MASK) == 0 ) ?
	636	(end >> CONFIG_PPM_PAGE_SHIFT) : (end >> CONFIG_PPM_PAGE_SHIFT) + 1;
	637
	638	// no reserved sones for TSAR architecture
	639	boot_info->rsvd_nr = 0;
	640
	641	// set boot_info signature
	642	boot_info->signature = BOOT_INFO_SIGNATURE;
	643
	644	} // boot_info_init()
	645
	646	/***********************************************************************************
	647	* This function check the local boot_info_t structure for a given core.
	648	* @ boot_info : pointer to local 'boot_info_t' structure to be checked.
	649	* @ lid : core local identifier, index the core descriptor table.
	650	**********************************************************************************/
	651	static void boot_check_core( boot_info_t * boot_info,
	652	lid_t lid)
	653	{
	654	gid_t gid; // global hardware identifier of this core
	655	boot_core_t * this; // BOOT_INFO core descriptor of this core.
	656
	657	// Get core hardware identifier
	658	gid = (gid_t)boot_get_procid();
	659
	660	// get pointer on core descriptor
	661	this = &boot_info->core[lid];
	662
	663	if ( (this->gid != gid) \|\| (this->cxy != boot_info->cxy) )
	664	{
	665	boot_printf("\n[BOOT ERROR] in boot_check_core() :\n"
	666	" - boot_info cxy = %x\n"
	667	" - boot_info lid = %d\n"
	668	" - boot_info gid = %x\n"
	669	" - actual gid = %x\n",
	670	this->cxy , this->lid , this->gid , gid );
	671	boot_exit();
	672	}
	673
	674	} // boot_check_core()
	675
	676	/*********************************************************************************
	677	* This function is called by CP0 in cluster(0,0) to activate all other CP0s.
	678	* It returns the number of CP0s actually activated.
	679	********************************************************************************/
[527]	680	static uint32_t boot_wake_all_cp0s( void )
[439]	681	{
	682	archinfo_header_t* header; // Pointer on ARCHINFO header
	683	archinfo_cluster_t* cluster_base; // Pointer on ARCHINFO clusters base
	684	archinfo_cluster_t* cluster; // Iterator for loop on clusters
	685	archinfo_device_t* device_base; // Pointer on ARCHINFO devices base
	686	archinfo_device_t* device; // Iterator for loop on devices
	687	uint32_t cp0_nb = 0; // CP0s counter
	688
	689	header = (archinfo_header_t*)ARCHINFO_BASE;
	690	cluster_base = archinfo_get_cluster_base(header);
	691	device_base = archinfo_get_device_base (header);
	692
	693	// loop on all clusters
	694	for (cluster = cluster_base;
	695	cluster < &cluster_base[header->x_size * header->y_size];
	696	cluster++)
	697	{
	698	// Skip boot cluster.
	699	if (cluster->cxy == BOOT_CORE_CXY)
	700	continue;
	701
	702	// Skip clusters without core (thus without CP0).
	703	if (cluster->cores == 0)
	704	continue;
	705
	706	// Skip clusters without device (thus without XICU).
	707	if (cluster->devices == 0)
	708	continue;
	709
	710	// search XICU device associated to CP0, and send a WTI to activate it
	711	for (device = &device_base[cluster->device_offset];
	712	device < &device_base[cluster->device_offset + cluster->devices];
	713	device++)
	714	{
	715	if (device->type == DEV_TYPE_ICU_XCU)
	716	{
	717
	718	#if DEBUG_BOOT_WAKUP
	719	boot_printf("\n[BOOT] core[%x,0] activated at cycle %d\n",
	720	cluster->cxy , boot_get_proctime );
	721	#endif
	722
	723	boot_remote_sw((xptr_t)device->base, (uint32_t)boot_entry);
	724	cp0_nb++;
	725	}
	726	}
	727	}
	728	return cp0_nb;
	729
	730	} // boot_wake_cp0()
	731
	732	/*********************************************************************************
	733	* This function is called by all CP0 to activate the other CPi cores.
	734	* @ boot_info : pointer to local 'boot_info_t' structure.
	735	*********************************************************************************/
	736	static void boot_wake_local_cores(boot_info_t * boot_info)
	737	{
	738	unsigned int core_id;
	739
	740	// get pointer on XCU device descriptor in boot_info
	741	boot_device_t * xcu = &boot_info->int_dev[0];
	742
	743	// loop on cores
	744	for (core_id = 1; core_id < boot_info->cores_nr; core_id++)
	745	{
	746
	747	#if DEBUG_BOOT_WAKUP
	748	boot_printf("\n[BOOT] core[%x,%d] activated at cycle %d\n",
	749	boot_info->cxy , core_id , boot_get_proctime() );
	750	#endif
	751	// send an IPI
	752	boot_remote_sw( (xptr_t)(xcu->base + (core_id << 2)) , (uint32_t)boot_entry );
	753	}
	754	} // boot_wake_local_cores()
	755
	756
	757	/*********************************************************************************
	758	* This main function of the boot-loader is called by the boot_entry()
	759	* function, and executed by all cores.
	760	* The arguments values are computed by the boot_entry code.
	761	* @ lid : core local identifier,
	762	* @ cxy : cluster identifier,
	763	*********************************************************************************/
[524]	764	void boot_loader( lid_t lid,
	765	cxy_t cxy )
[439]	766	{
	767	boot_info_t * boot_info; // pointer on local boot_info_t structure
	768
	769	if (lid == 0)
	770	{
	771	/****************************************************
	772	* PHASE A : only CP0 in boot cluster executes it
	773	***************************************************/
	774	if (cxy == BOOT_CORE_CXY)
	775	{
	776	boot_printf("\n[BOOT] core[%x,%d] enters at cycle %d\n",
	777	cxy , lid , boot_get_proctime() );
	778
	779	// Initialize IOC driver
	780	if (USE_IOC_BDV) boot_bdv_init();
	781	else if (USE_IOC_HBA) boot_hba_init();
	782	// else if (USE_IOC_SDC) boot_sdc_init();
[547]	783	else if (USE_IOC_SPI) boot_spi_init();
[439]	784	else if (!USE_IOC_RDK)
	785	{
	786	boot_printf("\n[BOOT ERROR] in %s : no IOC driver\n");
	787	boot_exit();
	788	}
	789
	790	// Initialize FAT32.
	791	boot_fat32_init();
	792
	793	// Load the 'kernel.elf' file into memory from IOC, and set
	794	// the global variables defining the kernel layout
	795	boot_kernel_load();
	796
	797	boot_printf("\n[BOOT] core[%x,%d] loaded kernel at cycle %d\n",
	798	cxy , lid , boot_get_proctime() );
	799
	800	// Load the arch_info.bin file into memory.
	801	boot_archinfo_load();
	802
	803	// Get local boot_info_t structure base address.
	804	// It is the first structure in the .kdata segment.
	805	boot_info = (boot_info_t *)seg_kdata_base;
	806
	807	// Initialize local boot_info_t structure.
	808	boot_info_init( boot_info , cxy );
	809
	810	// check boot_info signature
	811	if (boot_info->signature != BOOT_INFO_SIGNATURE)
	812	{
	813	boot_printf("\n[BOOT ERROR] in %s reported by core[%x,%d]\n"
	814	" illegal boot_info signature / should be %x\n",
	815	__FUNCTION__ , cxy , lid , BOOT_INFO_SIGNATURE );
	816	boot_exit();
	817	}
	818
	819	boot_printf("\n[BOOT] core[%x,%d] loaded arch_info at cycle %d\n",
	820	cxy , lid , boot_get_proctime() );
	821
	822	// Check core information.
	823	boot_check_core(boot_info, lid);
	824
	825	// Activate other CP0s / get number of active CP0s
	826	active_cp0s_nr = boot_wake_all_cp0s() + 1;
	827
	828	// Wait until all clusters (i.e all CP0s) ready to enter kernel.
	829	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) ,
	830	active_cp0s_nr );
	831
	832	// activate other local cores
	833	boot_wake_local_cores( boot_info );
	834
	835	// display address extensions
	836	// uint32_t cp2_data_ext;
	837	// uint32_t cp2_ins_ext;
	838	// asm volatile( "mfc2 %0, $24" : "=&r" (cp2_data_ext) );
	839	// asm volatile( "mfc2 %0, $25" : "=&r" (cp2_ins_ext) );
	840	// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
	841	// cxy , lid , cp2_data_ext , cp2_ins_ext );
	842
	843	// Wait until all local cores in cluster ready
	844	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
	845	boot_info->cores_nr );
	846	}
	847	/******************************************************************
	848	* PHASE B : all CP0s other than CP0 in boot cluster execute it
	849	*****************************************************************/
	850	else
	851	{
	852	// at this point, all INSTRUCTION address extension registers
	853	// point on cluster(0,0), but the DATA extension registers point
	854	// already on the local cluster to use the local stack.
	855	// To access the bootloader global variables we must first copy
	856	// the boot code (data and instructions) in the local cluster.
	857	boot_remote_memcpy( XPTR( cxy , BOOT_BASE ),
	858	XPTR( BOOT_CORE_CXY , BOOT_BASE ),
	859	BOOT_MAX_SIZE );
	860
	861	// from now, it is safe to refer to the boot code global variables
	862	boot_printf("\n[BOOT] core[%x,%d] replicated boot code at cycle %d\n",
	863	cxy , lid , boot_get_proctime() );
	864
	865	// switch to the INSTRUCTION local memory space, to avoid contention.
[552]	866	// asm volatile("mtc2 %0, $25" :: "r"(cxy));
[439]	867
	868	// Copy the arch_info.bin file into the local memory.
	869	boot_remote_memcpy(XPTR(cxy, ARCHINFO_BASE),
	870	XPTR(BOOT_CORE_CXY, ARCHINFO_BASE),
	871	ARCHINFO_MAX_SIZE );
	872
	873	boot_printf("\n[BOOT] core[%x,%d] replicated arch_info at cycle %d\n",
	874	cxy , lid , boot_get_proctime() );
	875
	876	// Copy the kcode segment into local memory
	877	boot_remote_memcpy( XPTR( cxy , seg_kcode_base ),
	878	XPTR( BOOT_CORE_CXY , seg_kcode_base ),
	879	seg_kcode_size );
	880
	881	// Copy the kdata segment into local memory
	882	boot_remote_memcpy( XPTR( cxy , seg_kdata_base ),
	883	XPTR( BOOT_CORE_CXY , seg_kdata_base ),
	884	seg_kdata_size );
	885
	886	// Copy the kentry segment into local memory
	887	boot_remote_memcpy( XPTR( cxy , seg_kentry_base ),
	888	XPTR( BOOT_CORE_CXY , seg_kentry_base ),
	889	seg_kentry_size );
	890
	891	boot_printf("\n[BOOT] core[%x,%d] replicated kernel code at cycle %d\n",
	892	cxy , lid , boot_get_proctime() );
	893
	894	// Get local boot_info_t structure base address.
	895	boot_info = (boot_info_t*)seg_kdata_base;
	896
	897	// Initialize local boot_info_t structure.
	898	boot_info_init( boot_info , cxy );
	899
	900	// Check core information.
	901	boot_check_core( boot_info , lid );
	902
	903	// get number of active clusters from BOOT_CORE cluster
	904	uint32_t count = boot_remote_lw( XPTR( BOOT_CORE_CXY , &active_cp0s_nr ) );
	905
	906	// Wait until all clusters (i.e all CP0s) ready to enter kernel
	907	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) , count );
	908
	909	// activate other local cores
	910	boot_wake_local_cores( boot_info );
	911
	912	// display address extensions
	913	// uint32_t cp2_data_ext;
	914	// uint32_t cp2_ins_ext;
	915	// asm volatile( "mfc2 %0, $24" : "=&r" (cp2_data_ext) );
	916	// asm volatile( "mfc2 %0, $25" : "=&r" (cp2_ins_ext) );
	917	// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
	918	// cxy , lid , cp2_data_ext , cp2_ins_ext );
	919
	920	// Wait until all local cores in cluster ready
	921	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
	922	boot_info->cores_nr );
	923	}
	924	}
	925	else
	926	{
	927	/***************************************************************
	928	* PHASE C: all non CP0 cores in all clusters execute it
	929	**************************************************************/
	930
	931	// Switch to the INSTRUCTIONS local memory space
	932	// to avoid contention at the boot cluster.
[552]	933	// asm volatile("mtc2 %0, $25" :: "r"(cxy));
[439]	934
	935	// Get local boot_info_t structure base address.
	936	boot_info = (boot_info_t *)seg_kdata_base;
	937
	938	// Check core information
	939	boot_check_core(boot_info, lid);
	940
	941	// display address extensions
	942	// uint32_t cp2_data_ext;
	943	// uint32_t cp2_ins_ext;
	944	// asm volatile( "mfc2 %0, $24" : "=&r" (cp2_data_ext) );
	945	// asm volatile( "mfc2 %0, $25" : "=&r" (cp2_ins_ext) );
	946	// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
	947	// cxy , lid , cp2_data_ext , cp2_ins_ext );
	948
	949	// Wait until all local cores in cluster ready
	950	boot_remote_barrier( XPTR( cxy , &local_barrier ) , boot_info->cores_nr );
	951	}
	952
	953	// Each core initialise the following registers before jumping to kernel:
	954	// - sp_29 : stack pointer on idle thread,
	955	// - c0_sr : reset BEV bit
	956	// - a0_04 : pointer on boot_info structure
	957	// - c0_ebase : kentry_base(and jump to kernel_entry.
	958
	959	// The array of idle-thread descriptors is allocated in the kdata segment,
	960	// just after the boot_info structure
	961	uint32_t sp;
	962	uint32_t base;
	963	uint32_t offset = sizeof( boot_info_t );
	964	uint32_t pmask = CONFIG_PPM_PAGE_MASK;
	965	uint32_t psize = CONFIG_PPM_PAGE_SIZE;
	966
	967	// compute base address of idle thread descriptors array
	968	if( offset & pmask ) base = seg_kdata_base + (offset & ~pmask) + psize;
	969	else base = seg_kdata_base + offset;
	970
	971	// compute stack pointer
	972	sp = base + ((lid + 1) * CONFIG_THREAD_DESC_SIZE) - 16;
	973
	974	asm volatile( "mfc0 $27, $12 \n"
	975	"lui $26, 0xFFBF \n"
	976	"ori $26, $26, 0xFFFF \n"
	977	"and $27, $27, $26 \n"
	978	"mtc0 $27, $12 \n"
	979	"move $4, %0 \n"
	980	"move $29, %1 \n"
	981	"mtc0 %2, $15, 1 \n"
	982	"jr %3 \n"
	983	:
	984	: "r"(boot_info) ,
	985	"r"(sp) ,
	986	"r"(boot_info->kentry_base) ,
	987	"r"(kernel_entry)
	988	: "$26" , "$27" , "$29" , "$4" );
	989
	990
	991	} // boot_loader()

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