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source: trunk/tools/bootloader_tsar/boot.c @ 20

Last change on this file since 20 was 13, checked in by alain, 8 years ago
Few changes in the boot_info structure.
File size: 36.8 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, *
	28	* where each processor 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 bscpu (whose index is [0,0]), *
	33	* executing the generic preloader. *
	34	* *
	35	* 1) The boot-loader first phase is executed by bscpu only, while *
	36	* all other cores are waiting in the preloader. *
	37	* It does the following tasks: *
	38	* - load into the memory bank of cluster (0,0) 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 bscpu). 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(0,0), *
	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>
[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;
	348
	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
	366	// Initialize kernel segments
[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
[13]	395	// loop on arch-info peripherals in io_cluster,
[6]	396	// to initialize the boot_info array of external peripherals
	397
[1]	398	#if DEBUG_BOOT_INFO
[13]	399	boot_printf("\n[BOOT INFO] %s : external peripherals at cycle %d\n",
	400	__FUNCTION__ , cxy , 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	{
	408	// initialise one entry for each external peripheral
	409	if( (device->type != DEV_TYPE_RAM_SCL) &&
	410	(device->type != DEV_TYPE_ICU_XCU) &&
	411	(device->type != DEV_TYPE_MMC_TSR) &&
	412	(device->type != DEV_TYPE_DMA_SCL) )
[1]	413	{
[6]	414	boot_dev = &boot_info->ext_dev[device_id];
[1]	415
[6]	416	boot_dev->type = device->type;
	417	boot_dev->base = device->base;
	418	boot_dev->channels = device->channels;
	419	boot_dev->param0 = device->arg0;
	420	boot_dev->param1 = device->arg1;
	421	boot_dev->param2 = device->arg2;
	422	boot_dev->param3 = device->arg3;
	423	boot_dev->irqs = device->irqs;
	424
	425	device_id++;
	426
[1]	427	#if DEBUG_BOOT_INFO
[6]	428	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
	429	device_type_str( device->type ) , device->base , device->size ,
	430	device->channels , device->irqs );
[1]	431	#endif
[13]	432	}
[6]	433
	434	// Initialize array of irq descriptors for PIC
	435	if (device->type == DEV_TYPE_PIC_TSR)
	436	{
	437	for (irq_id = 0; irq_id < CONFIG_MAX_IRQS_PER_PIC; irq_id++)
	438	{
	439	boot_dev->irq[irq_id].valid = 0;
	440	}
[1]	441
[6]	442	for (irq = &irq_base[device->irq_offset];
	443	irq < &irq_base[device->irq_offset + device->irqs];
	444	irq++)
	445	{
	446	boot_dev->irq[irq->port].valid = 1;
	447	boot_dev->irq[irq->port].dev_type = irq->dev_type;
	448	boot_dev->irq[irq->port].channel = irq->channel;
	449	boot_dev->irq[irq->port].is_rx = irq->is_rx;
	450
	451	#if DEBUG_BOOT_INFO
	452	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
	453	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
	454	#endif
	455	}
[1]	456	}
[13]	457	} // end loop on io_cluster peripherals
[1]	458
[6]	459	// initialize number of external peripherals
	460	boot_info->ext_dev_nr = device_id;
	461
	462	// Initialize cluster specific resources
	463	boot_info->cxy = my_cluster->cxy;
	464
	465	#if DEBUG_BOOT_INFO
	466	boot_printf("\n[BOOT INFO] %s : cores in cluster %x\n", __FUNCTION__ );
	467	#endif
	468
	469	// Initialize array of core descriptors
	470	core_id = 0;
	471	for (core = &core_base[my_cluster->core_offset];
	472	core < &core_base[my_cluster->core_offset + my_cluster->cores];
	473	core++ )
	474	{
	475	boot_info->core[core_id].gid = (gid_t)core->gid;
	476	boot_info->core[core_id].lid = (lid_t)core->lid;
	477	boot_info->core[core_id].cxy = (cxy_t)core->cxy;
	478
	479	#if DEBUG_BOOT_INFO
	480	boot_printf(" - core_gid = %x : cxy = %x / lid = %d\n",
	481	core->gid , core->cxy , core->lid );
	482	#endif
	483	core_id++;
	484	}
	485
	486	// Initialize number of cores in my_cluster
	487	boot_info->cores_nr = core_id;
	488
[13]	489	// initialise internal devices (RAM, XCU, MMC, DMA)
	490	// set default values, then scan all local devices
[6]	491
	492	#if DEBUG_BOOT_INFO
	493	boot_printf("\n[BOOT INFO] %s : internal peripherals in cluster %x\n", __FUNCTION__ );
	494	#endif
	495
[13]	496	boot_info->pages_nr = 0;
	497	boot_info->dev_icu.channels = 0;
	498	boot_info->dev_mmc.channels = 0;
	499	boot_info->dev_dma.channels = 0;
	500
[6]	501	for (device = &device_base[my_cluster->device_offset];
	502	device < &device_base[my_cluster->device_offset + my_cluster->devices];
	503	device++ )
	504	{
	505	if (device->type == DEV_TYPE_RAM_SCL)
	506	{
[13]	507	// set total number of physical memory pages in cluster
[6]	508	boot_info->pages_nr = device->size >> CONFIG_PPM_PAGE_SHIFT;
	509
	510	// Get the last address allocated for the kernel segments
	511	uint32_t end;
	512	if( boot_info->kernel_code_end > boot_info->kernel_data_end )
[1]	513	{
[6]	514	end = boot_info->kernel_code_end;
[1]	515	}
[6]	516	else
[1]	517	{
[6]	518	end = boot_info->kernel_data_end;
	519	}
	520
	521	// Compute the number of pages allocated for the kernel.
	522	if( (end & CONFIG_PPM_PAGE_MASK) == 0 )
	523	{
	524	boot_info->pages_offset = end >> CONFIG_PPM_PAGE_SHIFT;
	525	}
	526	else
	527	{
	528	boot_info->pages_offset = (end >> CONFIG_PPM_PAGE_SHIFT) + 1;
	529	}
[1]	530
	531	#if DEBUG_BOOT_INFO
[13]	532	boot_printf(" - RAM : %x pages / first free page = %x\n",
[6]	533	boot_info->pages_nr , boot_info->pages_offset );
[1]	534	#endif
[6]	535	}
[13]	536	else if (device->type == DEV_TYPE_ICU_XCU)
[6]	537	{
[13]	538	boot_dev = &boot_info->dev_icu;
	539
	540	boot_dev->type = device->type;
	541	boot_dev->base = device->base;
	542	boot_dev->channels = device->channels;
	543	boot_dev->param0 = device->arg0;
	544	boot_dev->param1 = device->arg1;
	545	boot_dev->param2 = device->arg2;
	546	boot_dev->param3 = device->arg3;
	547	boot_dev->irqs = device->irqs;
	548
	549	#if DEBUG_BOOT_INFO
	550	boot_printf(" - XCU : base = %l / size = %l / channels = %d / irqs = %d\n",
	551	device->base , device->size , device->channels , device->irqs );
	552	#endif
	553
[6]	554	for (irq_id = 0; irq_id < CONFIG_MAX_HWIS_PER_ICU; irq_id++)
	555	{
	556	boot_dev->irq[irq_id].valid = 0;
[1]	557	}
	558
[6]	559	for (irq = &irq_base[device->irq_offset];
	560	irq < &irq_base[device->irq_offset + device->irqs];
	561	irq++)
[1]	562	{
[6]	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
	573	}
	574	}
[13]	575	else if( device->type == DEV_TYPE_MMC_TSR )
	576	{
	577	boot_dev = &boot_info->dev_mmc;
[1]	578
[13]	579	boot_dev->type = device->type;
	580	boot_dev->base = device->base;
	581	boot_dev->channels = device->channels;
	582	boot_dev->irqs = 0;
[1]	583
[13]	584	#if DEBUG_BOOT_INFO
	585	boot_printf(" - MMC : base = %l / size = %l / channels = %d / irqs = %d\n",
	586	device->base , device->size , device->channels , device->irqs );
	587	#endif
	588	}
	589	else if( device->type == DEV_TYPE_DMA_SCL )
	590	{
	591	boot_dev = &boot_info->dev_dma;
	592
	593	boot_dev->type = device->type;
	594	boot_dev->base = device->base;
	595	boot_dev->channels = device->channels;
	596	boot_dev->irqs = 0;
	597
	598	#if DEBUG_BOOT_INFO
	599	boot_printf(" - DMA : base = %l / size = %l / channels = %d / irqs = %d\n",
	600	device->base , device->size , device->channels , device->irqs );
	601	#endif
	602	}
	603	} // end loop on local peripherals
	604
[6]	605	// set boot_info signature
	606	boot_info->signature = BOOT_INFO_SIGNATURE;
	607
[1]	608	} // boot_info_init()
	609
[6]	610	/***********************************************************************************
	611	* This function check the local boot_info_t structure for a given core.
	612	* @ boot_info : pointer to local 'boot_info_t' structure to be checked.
	613	* @ lid : core local identifier, index the core descriptor table.
	614	**********************************************************************************/
[1]	615	static void boot_check_core( boot_info_t * boot_info,
	616	lid_t lid)
	617	{
	618	gid_t gid; // global hardware identifier of this core
	619	boot_core_t * this; // BOOT_INFO core descriptor of this core.
	620
	621	// Get core hardware identifier
	622	gid = (gid_t)boot_get_procid();
	623
	624	// get pointer on core descriptor
	625	this = &boot_info->core[lid];
	626
	627	if ( (this->gid != gid) \|\| (this->cxy != boot_info->cxy) )
	628	{
	629	boot_printf("\n[BOOT ERROR] in boot_check_core() :\n"
	630	" - boot_info cxy = %x\n"
	631	" - boot_info lid = %d\n"
	632	" - boot_info gid = %x\n"
	633	" - actual gid = %x\n",
	634	this->cxy , this->lid , this->gid , gid );
	635	boot_exit();
	636	}
	637
	638	} // boot_check_core()
	639
[6]	640	/*********************************************************************************
	641	* This function is called by CP0 in cluster(0,0) to activate all other CP0s.
[1]	642	* It returns the number of CP0s actually activated.
[6]	643	********************************************************************************/
	644	static uint32_t boot_wake_all_cp0s()
[1]	645	{
[6]	646	archinfo_header_t* header; // Pointer on ARCHINFO header
	647	archinfo_cluster_t* cluster_base; // Pointer on ARCHINFO clusters base
	648	archinfo_cluster_t* cluster; // Iterator for loop on clusters
	649	archinfo_device_t* device_base; // Pointer on ARCHINFO devices base
	650	archinfo_device_t* device; // Iterator for loop on devices
	651	uint32_t cp0_nb = 0; // CP0s counter
[1]	652
	653	header = (archinfo_header_t*)ARCHINFO_BASE;
	654	cluster_base = archinfo_get_cluster_base(header);
	655	device_base = archinfo_get_device_base (header);
	656
	657	// loop on all clusters
	658	for (cluster = cluster_base;
	659	cluster < &cluster_base[header->x_size * header->y_size];
	660	cluster++)
	661	{
	662	// Skip boot cluster.
	663	if (cluster->cxy == BOOT_CORE_CXY)
	664	continue;
	665
	666	// Skip clusters without core (thus without CP0).
	667	if (cluster->cores == 0)
	668	continue;
	669
	670	// Skip clusters without device (thus without XICU).
	671	if (cluster->devices == 0)
	672	continue;
	673
[6]	674	// search XICU device associated to CP0, and send a WTI to activate it
[1]	675	for (device = &device_base[cluster->device_offset];
	676	device < &device_base[cluster->device_offset + cluster->devices];
	677	device++)
	678	{
[6]	679	if (device->type == DEV_TYPE_ICU_XCU)
[1]	680	{
[6]	681
	682	#if DEBUG_BOOT_WAKUP
	683	boot_printf("\n[BOOT] core[%x][0] activated at cycle %d\n",
	684	cluster->cxy , boot_get_proctime );
	685	#endif
	686
[1]	687	boot_remote_sw((xptr_t)device->base, (uint32_t)boot_entry);
	688	cp0_nb++;
	689	}
	690	}
	691	}
	692	return cp0_nb;
	693
	694	} // boot_wake_cp0()
	695
[6]	696	/*********************************************************************************
	697	* This function is called by all CP0 to activate all local CPi cores.
	698	* @ boot_info : pointer to local 'boot_info_t' structure, used to find
	699	* the XICU device associated with local CPi base addresses.
	700	*********************************************************************************/
	701	static void boot_wake_local_cores(boot_info_t * boot_info)
[1]	702	{
[6]	703	boot_device_t * device; // Iterator on devices
	704	unsigned int core_id; // Iterator on cores
[1]	705
[13]	706	device = &boot_info->dev_icu;
	707
	708	// loop on cores
	709	for (core_id = 1; core_id < boot_info->cores_nr; core_id++)
[1]	710	{
[6]	711
	712	#if DEBUG_BOOT_WAKUP
	713	boot_printf("\n[BOOT] core[%x][%d] activated at cycle %d\n",
	714	boot_info->cxy , core_id , boot_get_proctime() );
	715	#endif
[13]	716	boot_remote_sw( (xptr_t)(device->base + (core_id << 2)) , (uint32_t)boot_entry );
[1]	717	}
	718	} // boot_wake_local_cores()
	719
	720
[6]	721	/*********************************************************************************
[1]	722	* This main function of the boot-loader is called by the boot_entry()
	723	* function, and executed by all cores.
	724	* The arguments values are computed by the boot_entry code.
[6]	725	* @ lid : core local identifier,
[1]	726	* @ cxy : cluster identifier,
[6]	727	*********************************************************************************/
[1]	728	void boot_loader( lid_t lid,
	729	cxy_t cxy )
	730	{
[6]	731	boot_info_t * boot_info; // pointer on local boot_info_t structure
[1]	732
	733	if (lid == 0)
	734	{
[6]	735	/****************************************************
	736	* PHASE A : only CP0 in boot cluster executes it
	737	***************************************************/
[1]	738	if (cxy == BOOT_CORE_CXY)
	739	{
[6]	740	boot_printf("\n[BOOT] core[%x][%d] enters at cycle %d\n",
	741	cxy , lid , boot_get_proctime() );
[1]	742
	743	// Initialize IOC driver
	744	if (USE_IOC_BDV) boot_bdv_init();
	745	else if (USE_IOC_HBA) boot_hba_init();
[6]	746	// else if (USE_IOC_SDC) boot_sdc_init();
	747	// else if (USE_IOC_SPI) boot_spi_init();
[1]	748	else if (!USE_IOC_RDK)
	749	{
[6]	750	boot_printf("\n[BOOT ERROR] in %s : no IOC driver\n");
[1]	751	boot_exit();
	752	}
	753
[6]	754	// Initialize FAT32.
[1]	755	boot_fat32_init();
	756
[6]	757	// Load the 'kernel.elf' file into memory from IOC, and set
	758	// the global variables defining the kernel layout
	759	boot_kernel_load();
	760
	761	boot_printf("\n[BOOT] core[%x][%d] loaded kernel at cycle %d\n",
	762	cxy , lid , boot_get_proctime() );
	763
[1]	764	// Load the arch_info.bin file into memory.
	765	boot_archinfo_load();
	766
[6]	767	// Get local boot_info_t structure base address.
[1]	768	// It is the first structure in the .kdata segment.
[6]	769	boot_info = (boot_info_t *)seg_kdata_base;
[1]	770
[6]	771	// Initialize local boot_info_t structure.
	772	boot_info_init( boot_info , cxy );
	773
	774	// check boot_info signature
[1]	775	if (boot_info->signature != BOOT_INFO_SIGNATURE)
	776	{
[6]	777	boot_printf("\n[BOOT ERROR] in %s reported by core[%x][%d]\n"
	778	" illegal boot_info signature / should be %x\n",
	779	__FUNCTION__ , cxy , lid , BOOT_INFO_SIGNATURE );
[1]	780	boot_exit();
	781	}
	782
[6]	783	boot_printf("\n[BOOT] core[%x][%d] loaded boot_info at cycle %d\n",
	784	cxy , lid , boot_get_proctime() );
[1]	785
	786	// Check core information.
	787	boot_check_core(boot_info, lid);
	788
[6]	789	// Activate other CP0s / get number of active CP0s
	790	active_cp0s_nr = boot_wake_all_cp0s() + 1;
[1]	791
[6]	792	// Wait until all clusters (i.e all CP0s) ready to enter kernel.
	793	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) ,
	794	active_cp0s_nr );
[1]	795
[6]	796	// activate other local cores
	797	boot_wake_local_cores( boot_info );
[1]	798
[6]	799	// Wait until all local cores in cluster ready
	800	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
	801	boot_info->cores_nr );
[1]	802	}
[6]	803	/******************************************************************
	804	* PHASE B : all CP0s other than CP0 in boot cluster execute it
	805	*****************************************************************/
[1]	806	else
	807	{
[6]	808	// at this point, all INSTRUCTION address extension registers
	809	// point on cluster(0,0), but the DATA extension registers point
	810	// already on the local cluster to use the local stack.
	811	// To access the bootloader global variables we must first copy
	812	// the boot code (data and instructions) in the local cluster.
	813	boot_remote_memcpy( XPTR( cxy , BOOT_BASE ),
	814	XPTR( BOOT_CORE_CXY , BOOT_BASE ),
	815	BOOT_MAX_SIZE );
[1]	816
[6]	817	// from now, it is safe to refer to the boot code global variables
	818	boot_printf("\n[BOOT] core[%x][%d] replicated boot code at cycle %d\n",
	819	cxy , lid , boot_get_proctime() );
[1]	820
[6]	821	// switch to the INSTRUCTION local memory space, to avoid contention.
[1]	822	asm volatile("mtc2 %0, $25" :: "r"(cxy));
	823
[6]	824	// Copy the arch_info.bin file into the local memory.
[1]	825	boot_remote_memcpy(XPTR(cxy, ARCHINFO_BASE),
	826	XPTR(BOOT_CORE_CXY, ARCHINFO_BASE),
[6]	827	ARCHINFO_MAX_SIZE );
[1]	828
[6]	829	boot_printf("\n[BOOT] core[%x][%d] replicated arch_info at cycle %d\n",
	830	cxy , lid , boot_get_proctime() );
[1]	831
[6]	832	// Copy the kcode segment into local memory
	833	boot_remote_memcpy( XPTR( cxy , seg_kcode_base ),
	834	XPTR( BOOT_CORE_CXY , seg_kcode_base ),
	835	seg_kcode_size );
[1]	836
[6]	837	// Copy the kdata segment into local memory
	838	boot_remote_memcpy( XPTR( cxy , seg_kdata_base ),
	839	XPTR( BOOT_CORE_CXY , seg_kdata_base ),
	840	seg_kdata_size );
	841
	842	boot_printf("\n[BOOT] core[%x][%d] replicated kernel code at cycle %d\n",
	843	cxy , lid , boot_get_proctime() );
	844
	845	// Get local boot_info_t structure base address.
	846	boot_info = (boot_info_t*)seg_kdata_base;
	847
[1]	848	// Initialize local boot_info_t structure.
[6]	849	boot_info_init( boot_info , cxy );
[1]	850
	851	// Check core information.
[6]	852	boot_check_core( boot_info , lid );
[1]	853
[6]	854	// get number of active clusters from BOOT_CORE cluster
	855	uint32_t count = boot_remote_lw( XPTR( BOOT_CORE_CXY , &active_cp0s_nr ) );
[1]	856
[6]	857	// Wait until all clusters (i.e all CP0s) ready to enter kernel
	858	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) , count );
[1]	859
[6]	860	// activate other local cores
	861	boot_wake_local_cores( boot_info );
	862
	863	// Wait until all local cores in cluster ready
	864	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
	865	boot_info->cores_nr );
[1]	866	}
	867	}
	868	else
	869	{
	870	/***************************************************************
[6]	871	* PHASE C: all non CP0 cores in all clusters execute it
[1]	872	**************************************************************/
	873
[6]	874	// Switch to the INSTRUCTIONS local memory space
	875	// to avoid contention at the boot cluster.
	876	asm volatile("mtc2 %0, $25" :: "r"(cxy));
[1]	877
[6]	878	// Get local boot_info_t structure base address.
	879	boot_info = (boot_info_t *)seg_kdata_base;
[1]	880
[6]	881	// Check core information
	882	boot_check_core(boot_info, lid);
[1]	883
[6]	884	// Wait until all local cores in cluster ready
	885	boot_remote_barrier( XPTR( cxy , &local_barrier ) , boot_info->cores_nr );
[1]	886	}
	887
[13]	888	// Ech core compute stack pointer to the kernel idle-thread descriptor.
	889	// The array of idle-thread descriptors is allocated in the kdata segment,
	890	// just after the boot_info structure
[1]	891
[13]	892	uint32_t sp;
	893	uint32_t base;
	894	uint32_t offset = sizeof( boot_info_t );
	895	uint32_t pmask = CONFIG_PPM_PAGE_MASK;
	896	uint32_t psize = CONFIG_PPM_PAGE_SIZE;
	897
	898	// compute base address of idle thread descriptors array
	899	if( offset & pmask ) base = seg_kdata_base + (offset & ~pmask) + psize;
	900	else base = seg_kdata_base + offset;
	901
	902	// compute stack pointer
	903	sp = base + ((lid + 1) * CONFIG_THREAD_DESC_SIZE) - 16;
	904
	905	// Each cores initialise stack pointer,
[6]	906	// reset the BEV bit in status register,
	907	// register "boot_info" argument in a0,
	908	// and jump to kernel_entry.
	909	asm volatile( "mfc0 $27, $12 \n"
	910	"lui $26, 0xFFBF \n"
	911	"ori $26, $26, 0xFFFF \n"
	912	"and $27, $27, $26 \n"
	913	"mtc0 $27, $12 \n"
	914	"move $4, %0 \n"
	915	"move $29, %1 \n"
	916	"jr %2 \n"
[13]	917	:: "r"(boot_info) , "r"(sp) , "r"(kernel_entry) );
[6]	918
[1]	919	} // boot_loader()

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