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source: trunk/kernel/kern/kernel_init.c @ 574

Last change on this file since 574 was 564, checked in by alain, 6 years ago
Complete restructuration of kernel locks.
File size: 58.7 KB

Rev	Line
[1]	1	/*
	2	* kernel_init.c - kernel parallel initialization
[127]	3	*
[23]	4	* Authors : Mohamed Lamine Karaoui (2015)
	5	* Alain Greiner (2016,2017)
[1]	6	*
	7	* Copyright (c) Sorbonne Universites
	8	*
	9	* This file is part of ALMOS-MKH.
	10	*
	11	* ALMOS-MKH is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; version 2.0 of the License.
	14	*
	15	* ALMOS-MKH is distributed in the hope that it will be useful, but
	16	* WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with ALMOS-MKH; if not, write to the Free Software Foundation,
	22	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	23	*/
	24
[14]	25	#include <kernel_config.h>
[1]	26	#include <errno.h>
[457]	27	#include <hal_kernel_types.h>
[1]	28	#include <hal_special.h>
	29	#include <hal_context.h>
[279]	30	#include <hal_irqmask.h>
[564]	31	#include <hal_macros.h>
[296]	32	#include <hal_ppm.h>
[14]	33	#include <barrier.h>
[564]	34	#include <xbarrier.h>
[407]	35	#include <remote_fifo.h>
[1]	36	#include <core.h>
	37	#include <list.h>
[68]	38	#include <xlist.h>
[204]	39	#include <xhtab.h>
[1]	40	#include <thread.h>
	41	#include <scheduler.h>
	42	#include <kmem.h>
	43	#include <cluster.h>
	44	#include <string.h>
	45	#include <memcpy.h>
	46	#include <ppm.h>
	47	#include <page.h>
[5]	48	#include <chdev.h>
[1]	49	#include <boot_info.h>
	50	#include <dqdt.h>
	51	#include <dev_mmc.h>
[5]	52	#include <dev_dma.h>
	53	#include <dev_iob.h>
[1]	54	#include <dev_ioc.h>
[5]	55	#include <dev_txt.h>
[1]	56	#include <dev_pic.h>
	57	#include <printk.h>
	58	#include <vfs.h>
[23]	59	#include <devfs.h>
[68]	60	#include <mapper.h>
[1]	61
	62	///////////////////////////////////////////////////////////////////////////////////////////
[279]	63	// All the following global variables are replicated in all clusters.
[1]	64	// They are initialised by the kernel_init() function.
[14]	65	//
[127]	66	// WARNING : The section names have been defined to control the base addresses of the
[14]	67	// boot_info structure and the idle thread descriptors, through the kernel.ld script:
[127]	68	// - the boot_info structure is built by the bootloader, and used by kernel_init.
	69	// it must be the first object in the kdata segment.
[14]	70	// - the array of idle threads descriptors must be placed on the first page boundary after
	71	// the boot_info structure in the kdata segment.
[1]	72	///////////////////////////////////////////////////////////////////////////////////////////
	73
[5]	74	// This variable defines the local boot_info structure
	75	__attribute__((section(".kinfo")))
[14]	76	boot_info_t boot_info;
[5]	77
[14]	78	// This variable defines the "idle" threads descriptors array
	79	__attribute__((section(".kidle")))
[381]	80	char idle_threads[CONFIG_THREAD_DESC_SIZE *
[14]	81	CONFIG_MAX_LOCAL_CORES] CONFIG_PPM_PAGE_ALIGNED;
	82
[127]	83	// This variable defines the local cluster manager
[5]	84	__attribute__((section(".kdata")))
[19]	85	cluster_t cluster_manager CONFIG_CACHE_LINE_ALIGNED;
[1]	86
[564]	87	// This variable defines the TXT_TX[0] chdev
[188]	88	__attribute__((section(".kdata")))
[564]	89	chdev_t txt0_tx_chdev CONFIG_CACHE_LINE_ALIGNED;
[188]	90
[564]	91	// This variable defines the TXT_RX[0] chdev
[539]	92	__attribute__((section(".kdata")))
[564]	93	chdev_t txt0_rx_chdev CONFIG_CACHE_LINE_ALIGNED;
[539]	94
[14]	95	// This variables define the kernel process0 descriptor
[5]	96	__attribute__((section(".kdata")))
[19]	97	process_t process_zero CONFIG_CACHE_LINE_ALIGNED;
[1]	98
[14]	99	// This variable defines extended pointers on the distributed chdevs
[5]	100	__attribute__((section(".kdata")))
[14]	101	chdev_directory_t chdev_dir CONFIG_CACHE_LINE_ALIGNED;
[1]	102
[188]	103	// This variable contains the input IRQ indexes for the IOPIC controller
[5]	104	__attribute__((section(".kdata")))
[246]	105	iopic_input_t iopic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	106
[188]	107	// This variable contains the input IRQ indexes for the LAPIC controller
[5]	108	__attribute__((section(".kdata")))
[188]	109	lapic_input_t lapic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	110
[14]	111	// This variable defines the local cluster identifier
[5]	112	__attribute__((section(".kdata")))
[14]	113	cxy_t local_cxy CONFIG_CACHE_LINE_ALIGNED;
[5]	114
[127]	115	// This variable is used for CP0 cores synchronisation in kernel_init()
[5]	116	__attribute__((section(".kdata")))
[564]	117	xbarrier_t global_barrier CONFIG_CACHE_LINE_ALIGNED;
[1]	118
[127]	119	// This variable is used for local cores synchronisation in kernel_init()
[14]	120	__attribute__((section(".kdata")))
	121	barrier_t local_barrier CONFIG_CACHE_LINE_ALIGNED;
	122
[127]	123	// This variable defines the array of supported File System contexts
[50]	124	__attribute__((section(".kdata")))
	125	vfs_ctx_t fs_context[FS_TYPES_NR] CONFIG_CACHE_LINE_ALIGNED;
	126
[490]	127	// kernel_init is the entry point defined in hal/tsar_mips32/kernel.ld
[564]	128	// It is used by the bootloader.
[490]	129	extern void kernel_init( boot_info_t * info );
[50]	130
[564]	131	// This array is used for debug, and describes the kernel locks usage,
	132	// It must be kept consistent with the defines in kernel_config.h file.
	133	char * lock_type_str[] =
	134	{
	135	"unused_0", // 0
[408]	136
[564]	137	"CLUSTER_KCM", // 1
	138	"PPM_FREE", // 2
	139	"SCHED_STATE", // 3
	140	"VMM_STACK", // 4
	141	"VMM_MMAP", // 5
	142	"VFS_CTX", // 6
	143	"KCM_STATE", // 7
	144	"KHM_STATE", // 8
	145	"HTAB_STATE", // 9
	146
	147	"THREAD_JOIN", // 10
	148	"VFS_MAIN", // 11
	149	"CHDEV_QUEUE", // 12
	150	"CHDEV_TXT0", // 13
	151	"CHDEV_TXTLIST", // 14
	152	"PAGE_STATE", // 15
	153	"MUTEX_STATE", // 16
	154	"CONDVAR_STATE", // 17
	155	"SEM_STATE", // 18
	156	"XHTAB_STATE", // 19
	157
	158	"unused_20", // 20
	159
	160	"CLUSTER_PREFTBL", // 21
	161	"PPM_DIRTY", // 22
	162
	163	"CLUSTER_LOCALS", // 23
	164	"CLUSTER_COPIES", // 24
	165	"PROCESS_CHILDREN", // 25
	166	"PROCESS_USERSYNC", // 26
	167	"PROCESS_FDARRAY", // 27
	168
	169	"MAPPER_STATE", // 28
	170	"PROCESS_THTBL", // 29
	171
	172	"PROCESS_CWD", // 30
	173	"VFS_INODE", // 31
	174	"VFS_FILE", // 32
	175	"VMM_VSL", // 33
	176	};
	177
	178	// these debug variables are used to analyse the sys_read() and sys_write() syscalls timing
	179
[438]	180	#if DEBUG_SYS_READ
[407]	181	uint32_t enter_sys_read;
	182	uint32_t exit_sys_read;
	183
[435]	184	uint32_t enter_devfs_read;
	185	uint32_t exit_devfs_read;
[407]	186
	187	uint32_t enter_txt_read;
	188	uint32_t exit_txt_read;
	189
[435]	190	uint32_t enter_chdev_cmd_read;
	191	uint32_t exit_chdev_cmd_read;
[407]	192
[435]	193	uint32_t enter_chdev_server_read;
	194	uint32_t exit_chdev_server_read;
[407]	195
[435]	196	uint32_t enter_tty_cmd_read;
	197	uint32_t exit_tty_cmd_read;
[407]	198
[435]	199	uint32_t enter_tty_isr_read;
	200	uint32_t exit_tty_isr_read;
[407]	201	#endif
	202
[435]	203	// these debug variables are used to analyse the sys_write() syscall timing
	204
[438]	205	#if DEBUG_SYS_WRITE
[435]	206	uint32_t enter_sys_write;
	207	uint32_t exit_sys_write;
	208
	209	uint32_t enter_devfs_write;
	210	uint32_t exit_devfs_write;
	211
	212	uint32_t enter_txt_write;
	213	uint32_t exit_txt_write;
	214
	215	uint32_t enter_chdev_cmd_write;
	216	uint32_t exit_chdev_cmd_write;
	217
	218	uint32_t enter_chdev_server_write;
	219	uint32_t exit_chdev_server_write;
	220
	221	uint32_t enter_tty_cmd_write;
	222	uint32_t exit_tty_cmd_write;
	223
	224	uint32_t enter_tty_isr_write;
	225	uint32_t exit_tty_isr_write;
	226	#endif
	227
[564]	228	// intrumentation variables : cumulated costs per syscall type in cluster
	229	uint32_t syscalls_cumul_cost[SYSCALLS_NR];
	230
	231	// intrumentation variables : number of syscalls per syscal type in cluster
	232	uint32_t syscalls_occurences[SYSCALLS_NR];
	233
[1]	234	///////////////////////////////////////////////////////////////////////////////////////////
[5]	235	// This function displays the ALMOS_MKH banner.
[1]	236	///////////////////////////////////////////////////////////////////////////////////////////
[5]	237	static void print_banner( uint32_t nclusters , uint32_t ncores )
[127]	238	{
[5]	239	printk("\n"
	240	" _ __ __ _____ ______ __ __ _ __ _ _ \n"
	241	" /\\ \| \| \| \\ / \| / ___ \\ / _____\| \| \\ / \| \| \| / / \| \| \| \| \n"
	242	" / \\ \| \| \| \\/ \| \| / \\ \| \| / \| \\/ \| \| \|/ / \| \| \| \| \n"
	243	" / /\\ \\ \| \| \| \|\\ /\| \| \| \| \| \| \| \|_____ ___ \| \|\\ /\| \| \| / \| \|___\| \| \n"
	244	" / /__\\ \\ \| \| \| \| \\/ \| \| \| \| \| \| \\_____ \\ \|___\| \| \| \\/ \| \| \| \\ \| ___ \| \n"
	245	" / ______ \\ \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|\\ \\ \| \| \| \| \n"
	246	" / / \\ \\ \| \|____ \| \| \| \| \| \\___/ \| _____/ \| \| \| \| \| \| \| \\ \\ \| \| \| \| \n"
	247	" /_/ \\_\\ \|______\| \|_\| \|_\| \\_____/ \|______/ \|_\| \|_\| \|_\| \\_\\ \|_\| \|_\| \n"
	248	"\n\n\t\t Advanced Locality Management Operating System / Multi Kernel Hybrid\n"
[457]	249	"\n\n\t\t %s / %d cluster(s) / %d core(s) per cluster\n\n",
	250	CONFIG_ALMOS_VERSION , nclusters , ncores );
[5]	251	}
[1]	252
	253
[5]	254	///////////////////////////////////////////////////////////////////////////////////////////
[564]	255	// This function initializes the TXT_TX[0] and TXT_RX[0] chdev descriptors, implementing
	256	// the "kernel terminal", shared by all kernel instances for debug messages.
	257	// These chdev are implemented as global variables (replicated in all clusters),
	258	// because this terminal is used before the kmem allocator initialisation, but only
	259	// the chdevs in cluster 0 are registered in the "chdev_dir" directory.
[127]	260	// As this TXT0 chdev supports only the TXT_SYNC_WRITE command, we don't create
	261	// a server thread, we don't allocate a WTI, and we don't initialize the waiting queue.
[564]	262	// Note: The TXT_RX[0] chdev is created, but is not used by ALMOS-MKH (september 2018).
[5]	263	///////////////////////////////////////////////////////////////////////////////////////////
	264	// @ info : pointer on the local boot-info structure.
	265	///////////////////////////////////////////////////////////////////////////////////////////
[564]	266	static void __attribute__ ((noinline)) txt0_device_init( boot_info_t * info )
[5]	267	{
	268	boot_device_t * dev_tbl; // pointer on array of devices in boot_info
[127]	269	uint32_t dev_nr; // actual number of devices in this cluster
	270	xptr_t base; // remote pointer on segment base
	271	uint32_t func; // device functional index
[5]	272	uint32_t impl; // device implementation index
[127]	273	uint32_t i; // device index in dev_tbl
	274	uint32_t x; // X cluster coordinate
	275	uint32_t y; // Y cluster coordinate
[188]	276	uint32_t channels; // number of channels
[1]	277
[5]	278	// get number of peripherals and base of devices array from boot_info
[127]	279	dev_nr = info->ext_dev_nr;
[5]	280	dev_tbl = info->ext_dev;
[1]	281
[14]	282	// loop on external peripherals to find TXT device
[127]	283	for( i = 0 ; i < dev_nr ; i++ )
	284	{
[5]	285	base = dev_tbl[i].base;
[188]	286	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	287	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	288	channels = dev_tbl[i].channels;
[5]	289
[127]	290	if (func == DEV_FUNC_TXT )
[5]	291	{
[564]	292	// initialize TXT_TX[0] chdev
	293	txt0_tx_chdev.func = func;
	294	txt0_tx_chdev.impl = impl;
	295	txt0_tx_chdev.channel = 0;
	296	txt0_tx_chdev.base = base;
	297	txt0_tx_chdev.is_rx = false;
	298	remote_busylock_init( XPTR( local_cxy , &txt0_tx_chdev.wait_lock ),
	299	LOCK_CHDEV_TXT0 );
[188]	300
[564]	301	// initialize TXT_RX[0] chdev
	302	txt0_rx_chdev.func = func;
	303	txt0_rx_chdev.impl = impl;
	304	txt0_rx_chdev.channel = 0;
	305	txt0_rx_chdev.base = base;
	306	txt0_rx_chdev.is_rx = true;
	307	remote_busylock_init( XPTR( local_cxy , &txt0_rx_chdev.wait_lock ),
	308	LOCK_CHDEV_TXT0 );
	309
	310	// make TXT specific initialisations
	311	dev_txt_init( &txt0_tx_chdev );
	312	dev_txt_init( &txt0_rx_chdev );
[14]	313
[564]	314	// register TXT_TX[0] & TXT_RX[0] in chdev_dir[x][y]
	315	// for all valid clusters
[5]	316	for( x = 0 ; x < info->x_size ; x++ )
	317	{
[564]	318	for( y = 0 ; y < info->y_size ; y++ )
[5]	319	{
[564]	320	cxy_t cxy = HAL_CXY_FROM_XY( x , y );
	321
	322	if( cluster_is_active( cxy ) )
	323	{
	324	hal_remote_s64( XPTR( cxy , &chdev_dir.txt_tx[0] ) ,
	325	XPTR( local_cxy , &txt0_tx_chdev ) );
	326	hal_remote_s64( XPTR( cxy , &chdev_dir.txt_rx[0] ) ,
	327	XPTR( local_cxy , &txt0_rx_chdev ) );
[559]	328	}
[5]	329	}
	330	}
[564]	331
	332	hal_fence();
[5]	333	}
[188]	334	} // end loop on devices
	335	} // end txt0_device_init()
[5]	336
[1]	337	///////////////////////////////////////////////////////////////////////////////////////////
[188]	338	// This function allocates memory and initializes the chdev descriptors for the internal
	339	// peripherals contained in the local cluster, other than the LAPIC, as specified by
	340	// the boot_info, including the linking with the driver for the specified implementation.
	341	// The relevant entries in all copies of the devices directory are initialised.
[1]	342	///////////////////////////////////////////////////////////////////////////////////////////
	343	// @ info : pointer on the local boot-info structure.
	344	///////////////////////////////////////////////////////////////////////////////////////////
[564]	345	static void __attribute__ ((noinline)) internal_devices_init( boot_info_t * info )
[1]	346	{
[188]	347	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
	348	uint32_t dev_nr; // actual number of devices in this cluster
	349	xptr_t base; // remote pointer on segment base
	350	uint32_t func; // device functionnal index
	351	uint32_t impl; // device implementation index
	352	uint32_t i; // device index in dev_tbl
	353	uint32_t x; // X cluster coordinate
	354	uint32_t y; // Y cluster coordinate
	355	uint32_t channels; // number of channels
	356	uint32_t channel; // channel index
	357	chdev_t * chdev_ptr; // local pointer on created chdev
[1]	358
[188]	359	// get number of internal peripherals and base from boot_info
	360	dev_nr = info->int_dev_nr;
	361	dev_tbl = info->int_dev;
[1]	362
[188]	363	// loop on internal peripherals
	364	for( i = 0 ; i < dev_nr ; i++ )
	365	{
	366	base = dev_tbl[i].base;
	367	channels = dev_tbl[i].channels;
	368	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	369	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[204]	370
[188]	371	//////////////////////////
	372	if( func == DEV_FUNC_MMC )
[5]	373	{
[1]	374
[564]	375	// check channels
	376	if( channels != 1 )
	377	printk("\n[PANIC] in %s : MMC device must be single channel\n", __FUNCTION__ );
	378
[188]	379	// create chdev in local cluster
	380	chdev_ptr = chdev_create( func,
	381	impl,
	382	0, // channel
	383	false, // direction
	384	base );
[14]	385
[564]	386	// check memory
	387	if( chdev_ptr == NULL )
	388	printk("\n[PANIC] in %s : cannot create MMC chdev\n", __FUNCTION__ );
[188]	389
	390	// make MMC specific initialisation
	391	dev_mmc_init( chdev_ptr );
[1]	392
[188]	393	// set the MMC field in all chdev_dir[x][y] structures
	394	for( x = 0 ; x < info->x_size ; x++ )
[1]	395	{
[564]	396	for( y = 0 ; y < info->y_size ; y++ )
[188]	397	{
[564]	398	cxy_t cxy = HAL_CXY_FROM_XY( x , y );
	399
	400	if( cluster_is_active( cxy ) )
	401	{
	402	hal_remote_s64( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
[559]	403	XPTR( local_cxy , chdev_ptr ) );
	404	}
[188]	405	}
[1]	406	}
[188]	407
[438]	408	#if( DEBUG_KERNEL_INIT & 0x1 )
	409	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	410	printk("\n[DBG] %s : created MMC in cluster %x / chdev = %x\n",
	411	__FUNCTION__ , local_cxy , chdev_ptr );
[389]	412	#endif
[14]	413	}
[188]	414	///////////////////////////////
	415	else if( func == DEV_FUNC_DMA )
[127]	416	{
[188]	417	// create one chdev per channel in local cluster
	418	for( channel = 0 ; channel < channels ; channel++ )
	419	{
	420	// create chdev[channel] in local cluster
	421	chdev_ptr = chdev_create( func,
	422	impl,
	423	channel,
	424	false, // direction
	425	base );
[5]	426
[564]	427	// check memory
	428	if( chdev_ptr == NULL )
	429	printk("\n[PANIC] in %s : cannot create DMA chdev\n", __FUNCTION__ );
	430
[188]	431	// make DMA specific initialisation
	432	dev_dma_init( chdev_ptr );
[127]	433
[188]	434	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
	435	// structure because the DMA device is not remotely accessible.
	436	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
[5]	437
[438]	438	#if( DEBUG_KERNEL_INIT & 0x1 )
	439	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	440	printk("\n[DBG] %s : created DMA[%d] in cluster %x / chdev = %x\n",
[389]	441	__FUNCTION__ , channel , local_cxy , chdev_ptr );
	442	#endif
[188]	443	}
[14]	444	}
[127]	445	}
[5]	446	} // end internal_devices_init()
	447
	448	///////////////////////////////////////////////////////////////////////////////////////////
[188]	449	// This function allocates memory and initializes the chdev descriptors for the
[408]	450	// external (shared) peripherals other than the IOPIC, as specified by the boot_info.
	451	// This includes the dynamic linking with the driver for the specified implementation.
[188]	452	// These chdev descriptors are distributed on all clusters, using a modulo on a global
[408]	453	// index, identically computed in all clusters.
	454	// This function is executed in all clusters by the CP0 core, that computes a global index
	455	// for all external chdevs. Each CP0 core creates only the chdevs that must be placed in
	456	// the local cluster, because the global index matches the local index.
[188]	457	// The relevant entries in all copies of the devices directory are initialised.
[5]	458	///////////////////////////////////////////////////////////////////////////////////////////
	459	// @ info : pointer on the local boot-info structure.
	460	///////////////////////////////////////////////////////////////////////////////////////////
	461	static void external_devices_init( boot_info_t * info )
	462	{
[188]	463	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
	464	uint32_t dev_nr; // actual number of external devices
	465	xptr_t base; // remote pointer on segment base
[5]	466	uint32_t func; // device functionnal index
	467	uint32_t impl; // device implementation index
[188]	468	uint32_t i; // device index in dev_tbl
	469	uint32_t x; // X cluster coordinate
	470	uint32_t y; // Y cluster coordinate
	471	uint32_t channels; // number of channels
	472	uint32_t channel; // channel index
	473	uint32_t directions; // number of directions (1 or 2)
	474	uint32_t rx; // direction index (0 or 1)
[127]	475	chdev_t * chdev; // local pointer on one channel_device descriptor
[188]	476	uint32_t ext_chdev_gid; // global index of external chdev
[5]	477
	478	// get number of peripherals and base of devices array from boot_info
[127]	479	dev_nr = info->ext_dev_nr;
[5]	480	dev_tbl = info->ext_dev;
	481
[188]	482	// initializes global index (PIC is already placed in cluster 0
	483	ext_chdev_gid = 1;
	484
[5]	485	// loop on external peripherals
[127]	486	for( i = 0 ; i < dev_nr ; i++ )
	487	{
[188]	488	base = dev_tbl[i].base;
	489	channels = dev_tbl[i].channels;
	490	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	491	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	492
[407]	493	// There is one chdev per direction for NIC and for TXT
	494	if((func == DEV_FUNC_NIC) \|\| (func == DEV_FUNC_TXT)) directions = 2;
	495	else directions = 1;
[5]	496
[407]	497	// do nothing for ROM, that does not require a device descriptor.
[5]	498	if( func == DEV_FUNC_ROM ) continue;
	499
[188]	500	// do nothing for PIC, that is already initialized
	501	if( func == DEV_FUNC_PIC ) continue;
[5]	502
[188]	503	// check PIC device initialized
[564]	504	if( chdev_dir.pic == XPTR_NULL )
	505	printk("\n[PANIC] in %s : PIC device must be initialized first\n", __FUNCTION__ );
[188]	506
	507	// check external device functionnal type
[564]	508	if( (func != DEV_FUNC_IOB) && (func != DEV_FUNC_IOC) && (func != DEV_FUNC_TXT) &&
	509	(func != DEV_FUNC_NIC) && (func != DEV_FUNC_FBF) )
	510	printk("\n[PANIC] in %s : undefined peripheral type\n", __FUNCTION__ );
[188]	511
[127]	512	// loops on channels
[428]	513	for( channel = 0 ; channel < channels ; channel++ )
[127]	514	{
[5]	515	// loop on directions
[188]	516	for( rx = 0 ; rx < directions ; rx++ )
[1]	517	{
[564]	518	// skip TXT0 that has already been initialized
	519	if( (func == DEV_FUNC_TXT) && (channel == 0) ) continue;
[428]	520
[564]	521	// all kernel instances compute the target cluster for all chdevs,
	522	// computing the global index ext_chdev_gid[func,channel,direction]
	523	cxy_t target_cxy;
	524	while( 1 )
[536]	525	{
[564]	526	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
	527	uint32_t x = offset / info->y_size;
	528	uint32_t y = offset % info->y_size;
[536]	529
[564]	530	target_cxy = HAL_CXY_FROM_XY( x , y );
	531
	532	// exit loop if target cluster is active
	533	if( cluster_is_active( target_cxy ) ) break;
	534
	535	// increment global index otherwise
	536	ext_chdev_gid++;
[550]	537	}
	538
[5]	539	// allocate and initialize a local chdev
[407]	540	// when local cluster matches target cluster
[5]	541	if( target_cxy == local_cxy )
[1]	542	{
[5]	543	chdev = chdev_create( func,
	544	impl,
	545	channel,
[188]	546	rx, // direction
[5]	547	base );
	548
[564]	549	if( chdev == NULL )
	550	printk("\n[PANIC] in %s : cannot allocate chdev for external device\n",
	551	__FUNCTION__ );
[5]	552
	553	// make device type specific initialisation
	554	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
	555	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
	556	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
	557	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
[188]	558	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
[5]	559
[127]	560	// all external (shared) devices are remotely accessible
[5]	561	// initialize the replicated chdev_dir[x][y] structures
[127]	562	// defining the extended pointers on chdev descriptors
	563	xptr_t * entry;
	564
[188]	565	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
	566	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
	567	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
[407]	568	if((func==DEV_FUNC_TXT) && (rx==0)) entry = &chdev_dir.txt_tx[channel];
	569	if((func==DEV_FUNC_TXT) && (rx==1)) entry = &chdev_dir.txt_rx[channel];
[188]	570	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
	571	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
[127]	572
[1]	573	for( x = 0 ; x < info->x_size ; x++ )
	574	{
[564]	575	for( y = 0 ; y < info->y_size ; y++ )
[1]	576	{
[564]	577	cxy_t cxy = HAL_CXY_FROM_XY( x , y );
	578
	579	if( cluster_is_active( cxy ) )
	580	{
	581	hal_remote_s64( XPTR( cxy , entry ),
[559]	582	XPTR( local_cxy , chdev ) );
	583	}
[5]	584	}
[1]	585	}
	586
[438]	587	#if( DEBUG_KERNEL_INIT & 0x1 )
	588	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	589	printk("\n[DBG] %s : create chdev %s / channel = %d / rx = %d / cluster %x / chdev = %x\n",
	590	__FUNCTION__ , chdev_func_str( func ), channel , rx , local_cxy , chdev );
[389]	591	#endif
[5]	592	} // end if match
	593
[19]	594	// increment chdev global index (matching or not)
[188]	595	ext_chdev_gid++;
[5]	596
	597	} // end loop on directions
	598	} // end loop on channels
[188]	599	} // end loop on devices
	600	} // end external_devices_init()
[5]	601
[188]	602	///////////////////////////////////////////////////////////////////////////////////////////
	603	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
[407]	604	// device, namely the informations attached to the external IOPIC controller, that
	605	// must be replicated in all clusters (struct iopic_input).
[188]	606	// This initialisation must be done before other devices initialisation because the IRQ
[407]	607	// routing infrastructure is required for both internal and external devices init.
[188]	608	///////////////////////////////////////////////////////////////////////////////////////////
	609	// @ info : pointer on the local boot-info structure.
	610	///////////////////////////////////////////////////////////////////////////////////////////
[564]	611	static void __attribute__ ((noinline)) iopic_init( boot_info_t * info )
[188]	612	{
	613	boot_device_t * dev_tbl; // pointer on boot_info external devices array
	614	uint32_t dev_nr; // actual number of external devices
	615	xptr_t base; // remote pointer on segment base
	616	uint32_t func; // device functionnal index
	617	uint32_t impl; // device implementation index
	618	uint32_t i; // device index in dev_tbl
	619	uint32_t x; // cluster X coordinate
	620	uint32_t y; // cluster Y coordinate
	621	bool_t found; // IOPIC found
	622	chdev_t * chdev; // pointer on PIC chdev descriptor
	623
	624	// get number of external peripherals and base of array from boot_info
	625	dev_nr = info->ext_dev_nr;
	626	dev_tbl = info->ext_dev;
	627
[564]	628	// avoid GCC warning
	629	base = XPTR_NULL;
	630	impl = 0;
	631
[188]	632	// loop on external peripherals to get the IOPIC
	633	for( i = 0 , found = false ; i < dev_nr ; i++ )
	634	{
	635	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	636
[127]	637	if( func == DEV_FUNC_PIC )
[1]	638	{
[188]	639	base = dev_tbl[i].base;
	640	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	641	found = true;
	642	break;
	643	}
	644	}
[5]	645
[564]	646	// check PIC existence
	647	if( found == false )
	648	printk("\n[PANIC] in %s : PIC device not found\n", __FUNCTION__ );
[1]	649
[407]	650	// allocate and initialize the PIC chdev in cluster 0
	651	chdev = chdev_create( DEV_FUNC_PIC,
[188]	652	impl,
	653	0, // channel
	654	0, // direction,
	655	base );
[5]	656
[564]	657	// check memory
	658	if( chdev == NULL )
	659	printk("\n[PANIC] in %s : no memory for PIC chdev\n", __FUNCTION__ );
[5]	660
[188]	661	// make PIC device type specific initialisation
	662	dev_pic_init( chdev );
[1]	663
[407]	664	// register, in all clusters, the extended pointer
	665	// on PIC chdev in "chdev_dir" array
[188]	666	xptr_t * entry = &chdev_dir.pic;
	667
	668	for( x = 0 ; x < info->x_size ; x++ )
	669	{
[564]	670	for( y = 0 ; y < info->y_size ; y++ )
[188]	671	{
[564]	672	cxy_t cxy = HAL_CXY_FROM_XY( x , y );
	673
	674	if( cluster_is_active( cxy ) )
	675	{
	676	hal_remote_s64( XPTR( cxy , entry ) ,
[559]	677	XPTR( local_cxy , chdev ) );
	678	}
[188]	679	}
	680	}
[1]	681
[407]	682	// initialize, in all clusters, the "iopic_input" structure
[188]	683	// defining how external IRQs are connected to IOPIC
	684
[407]	685	// register default value for unused inputs
	686	for( x = 0 ; x < info->x_size ; x++ )
	687	{
[564]	688	for( y = 0 ; y < info->y_size ; y++ )
[407]	689	{
[564]	690	cxy_t cxy = HAL_CXY_FROM_XY( x , y );
	691
	692	if( cluster_is_active( cxy ) )
	693	{
	694	hal_remote_memset( XPTR( cxy , &iopic_input ),
	695	0xFF , sizeof(iopic_input_t) );
[559]	696	}
[407]	697	}
	698	}
	699
	700	// register input IRQ index for valid inputs
	701	uint32_t id; // input IRQ index
	702	uint8_t valid; // input IRQ is connected
	703	uint32_t type; // source device type
	704	uint8_t channel; // source device channel
	705	uint8_t is_rx; // source device direction
	706	uint32_t * ptr; // local pointer on one field in iopic_input stucture
	707
[188]	708	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
	709	{
	710	valid = dev_tbl[i].irq[id].valid;
	711	type = dev_tbl[i].irq[id].dev_type;
	712	channel = dev_tbl[i].irq[id].channel;
	713	is_rx = dev_tbl[i].irq[id].is_rx;
[407]	714	func = FUNC_FROM_TYPE( type );
[188]	715
[407]	716	// get pointer on relevant field in iopic_input
	717	if( valid )
[188]	718	{
[407]	719	if ( func == DEV_FUNC_IOC ) ptr = &iopic_input.ioc[channel];
	720	else if((func == DEV_FUNC_TXT) && (is_rx == 0)) ptr = &iopic_input.txt_tx[channel];
	721	else if((func == DEV_FUNC_TXT) && (is_rx != 0)) ptr = &iopic_input.txt_rx[channel];
[492]	722	else if((func == DEV_FUNC_NIC) && (is_rx == 0)) ptr = &iopic_input.nic_tx[channel];
	723	else if((func == DEV_FUNC_NIC) && (is_rx != 0)) ptr = &iopic_input.nic_rx[channel];
	724	else if( func == DEV_FUNC_IOB ) ptr = &iopic_input.iob;
[564]	725	else printk("\n[PANIC] in %s : illegal source device for IOPIC input" );
[188]	726
[407]	727	// set one entry in all "iopic_input" structures
	728	for( x = 0 ; x < info->x_size ; x++ )
	729	{
[564]	730	for( y = 0 ; y < info->y_size ; y++ )
[407]	731	{
[564]	732	cxy_t cxy = HAL_CXY_FROM_XY( x , y );
	733
	734	if( cluster_is_active( cxy ) )
	735	{
	736	hal_remote_s64( XPTR( cxy , ptr ) , id );
[559]	737	}
[407]	738	}
	739	}
[188]	740	}
	741	}
	742
[438]	743	#if( DEBUG_KERNEL_INIT & 0x1 )
[564]	744	if( hal_tim_stamp() > DEBUG_KERNEL_INIT )
[407]	745	{
	746	printk("\n[DBG] %s created PIC chdev in cluster %x at cycle %d\n",
	747	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
	748	dev_pic_inputs_display();
	749	}
[389]	750	#endif
[188]	751
	752	} // end iopic_init()
	753
[1]	754	///////////////////////////////////////////////////////////////////////////////////////////
[188]	755	// This function is called by all CP0s in all cluster to complete the PIC device
	756	// initialisation, namely the informations attached to the LAPIC controller.
	757	// This initialisation must be done after the IOPIC initialisation, but before other
	758	// devices initialisation because the IRQ routing infrastructure is required for both
	759	// internal and external devices initialisation.
	760	///////////////////////////////////////////////////////////////////////////////////////////
	761	// @ info : pointer on the local boot-info structure.
	762	///////////////////////////////////////////////////////////////////////////////////////////
[564]	763	static void __attribute__ ((noinline)) lapic_init( boot_info_t * info )
[188]	764	{
	765	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
	766	uint32_t dev_nr; // number of internal devices
	767	uint32_t i; // device index in dev_tbl
	768	xptr_t base; // remote pointer on segment base
	769	uint32_t func; // device functionnal type in boot_info
	770	bool_t found; // LAPIC found
	771
	772	// get number of internal peripherals and base
	773	dev_nr = info->int_dev_nr;
	774	dev_tbl = info->int_dev;
	775
	776	// loop on internal peripherals to get the lapic device
	777	for( i = 0 , found = false ; i < dev_nr ; i++ )
	778	{
	779	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	780
	781	if( func == DEV_FUNC_ICU )
	782	{
	783	base = dev_tbl[i].base;
	784	found = true;
	785	break;
	786	}
	787	}
	788
	789	// if the LAPIC controller is not defined in the boot_info,
	790	// we simply don't initialize the PIC extensions in the kernel,
	791	// making the assumption that the LAPIC related informations
	792	// are hidden in the hardware specific PIC driver.
	793	if( found )
	794	{
	795	// initialise the PIC extensions for
	796	// the core descriptor and core manager extensions
	797	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
	798
	799	// initialize the "lapic_input" structure
	800	// defining how internal IRQs are connected to LAPIC
	801	uint32_t id;
	802	uint8_t valid;
	803	uint8_t channel;
	804	uint32_t func;
	805
	806	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
	807	{
	808	valid = dev_tbl[i].irq[id].valid;
	809	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
	810	channel = dev_tbl[i].irq[id].channel;
	811
	812	if( valid ) // only valid local IRQs are registered
	813	{
	814	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
	815	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
[564]	816	else printk("\n[PANIC] in %s : illegal source device for LAPIC input" );
[188]	817	}
	818	}
	819	}
	820	} // end lapic_init()
	821
	822	///////////////////////////////////////////////////////////////////////////////////////////
[14]	823	// This static function returns the identifiers of the calling core.
	824	///////////////////////////////////////////////////////////////////////////////////////////
	825	// @ info : pointer on boot_info structure.
	826	// @ lid : [out] core local index in cluster.
	827	// @ cxy : [out] cluster identifier.
	828	// @ lid : [out] core global identifier (hardware).
	829	// @ return 0 if success / return EINVAL if not found.
	830	///////////////////////////////////////////////////////////////////////////////////////////
[564]	831	static error_t __attribute__ ((noinline)) get_core_identifiers( boot_info_t * info,
	832	lid_t * lid,
	833	cxy_t * cxy,
	834	gid_t * gid )
[14]	835	{
[127]	836	uint32_t i;
[14]	837	gid_t global_id;
[19]	838
[14]	839	// get global identifier from hardware register
[127]	840	global_id = hal_get_gid();
[14]	841
	842	// makes an associative search in boot_info to get (cxy,lid) from global_id
	843	for( i = 0 ; i < info->cores_nr ; i++ )
	844	{
	845	if( global_id == info->core[i].gid )
	846	{
	847	*lid = info->core[i].lid;
	848	*cxy = info->core[i].cxy;
	849	*gid = global_id;
	850	return 0;
	851	}
	852	}
	853	return EINVAL;
[19]	854	}
[14]	855
	856	///////////////////////////////////////////////////////////////////////////////////////////
[1]	857	// This function is the entry point for the kernel initialisation.
[19]	858	// It is executed by all cores in all clusters, but only core[0], called CP0,
[14]	859	// initializes the shared resources such as the cluster manager, or the local peripherals.
[19]	860	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
	861	// only information contained in the local boot_info_t structure, set by the bootloader.
[103]	862	// Only CP0 in cluster 0 print the log messages.
[1]	863	///////////////////////////////////////////////////////////////////////////////////////////
	864	// @ info : pointer on the local boot-info structure.
	865	///////////////////////////////////////////////////////////////////////////////////////////
	866	void kernel_init( boot_info_t * info )
	867	{
[204]	868	lid_t core_lid = -1; // running core local index
	869	cxy_t core_cxy = -1; // running core cluster identifier
	870	gid_t core_gid; // running core hardware identifier
	871	cluster_t * cluster; // pointer on local cluster manager
	872	core_t * core; // pointer on running core descriptor
	873	thread_t * thread; // pointer on idle thread descriptor
	874
	875	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
	876	xptr_t devfs_dev_inode_xp; // extended pointer on DEVFS dev inode
	877	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external inode
	878	xptr_t devfs_internal_inode_xp; // extended pointer on DEVFS internal inode
	879
[1]	880	error_t error;
[285]	881	reg_t status; // running core status register
[1]	882
[188]	883	/////////////////////////////////////////////////////////////////////////////////
	884	// STEP 0 : Each core get its core identifier from boot_info, and makes
	885	// a partial initialisation of its private idle thread descriptor.
	886	// CP0 initializes the "local_cxy" global variable.
	887	// CP0 in cluster IO initializes the TXT0 chdev to print log messages.
	888	/////////////////////////////////////////////////////////////////////////////////
	889
[23]	890	error = get_core_identifiers( info,
[14]	891	&core_lid,
	892	&core_cxy,
	893	&core_gid );
[1]	894
[127]	895	// CP0 initializes cluster identifier
[14]	896	if( core_lid == 0 ) local_cxy = info->cxy;
[1]	897
[127]	898	// each core gets a pointer on its private idle thread descriptor
	899	thread = (thread_t )( idle_threads + (core_lid CONFIG_THREAD_DESC_SIZE) );
[68]	900
[127]	901	// each core registers this thread pointer in hardware register
[68]	902	hal_set_current_thread( thread );
[71]	903
[407]	904	// each core register core descriptor pointer in idle thread descriptor
	905	thread->core = &LOCAL_CLUSTER->core_tbl[core_lid];
	906
[564]	907	// each core initializes the idle thread locks counters
	908	thread->busylocks = 0;
[124]	909
[564]	910	#if DEBUG_BUSYLOCK
	911	// each core initialise the idle thread list of busylocks
	912	xlist_root_init( XPTR( local_cxy , &thread->busylocks_root ) );
	913	#endif
[14]	914
[564]	915	// CP0 initializes cluster info
	916	if( core_lid == 0 ) cluster_info_init( info );
	917
	918	// CP0 in cluster 0 initialises TXT0 chdev descriptor
	919	if( (core_lid == 0) && (core_cxy == 0) ) txt0_device_init( info );
	920
[14]	921	/////////////////////////////////////////////////////////////////////////////////
[564]	922	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	923	(info->x_size * info->y_size) );
[14]	924	barrier_wait( &local_barrier , info->cores_nr );
[437]	925	/////////////////////////////////////////////////////////////////////////////////
[14]	926
[438]	927	#if DEBUG_KERNEL_INIT
[564]	928	// if( (core_lid == 0) & (local_cxy == 0) )
	929	printk("\n[DBG] %s : exit barrier 0 : TXT0 initialized / sr %x / cycle %d\n",
	930	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	931	#endif
[14]	932
[188]	933	/////////////////////////////////////////////////////////////////////////////
[407]	934	// STEP 1 : all cores check core identifier.
[188]	935	// CP0 initializes the local cluster manager.
	936	// This includes the memory allocators.
	937	/////////////////////////////////////////////////////////////////////////////
	938
	939	// all cores check identifiers
[14]	940	if( error )
[564]	941	printk("\n[PANIC] in %s : illegal core : gid %x / cxy %x / lid %d",
	942	__FUNCTION__, core_lid, core_cxy, core_lid );
[1]	943
[564]	944	// CP0 initializes cluster manager complex structures
[14]	945	if( core_lid == 0 )
[1]	946	{
[564]	947	error = cluster_manager_init( info );
[1]	948
[14]	949	if( error )
[564]	950	printk("\n[PANIC] in %s : cannot initialize cluster manager in cluster %x\n",
	951	__FUNCTION__, local_cxy );
[14]	952	}
[5]	953
[14]	954	/////////////////////////////////////////////////////////////////////////////////
[564]	955	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	956	(info->x_size * info->y_size) );
[14]	957	barrier_wait( &local_barrier , info->cores_nr );
	958	/////////////////////////////////////////////////////////////////////////////////
[1]	959
[438]	960	#if DEBUG_KERNEL_INIT
	961	if( (core_lid == 0) & (local_cxy == 0) )
[564]	962	printk("\n[DBG] %s : exit barrier 1 : clusters initialised / sr %x / cycle %d\n",
	963	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	964	#endif
[1]	965
[188]	966	/////////////////////////////////////////////////////////////////////////////////
[407]	967	// STEP 2 : CP0 initializes the process_zero descriptor.
[296]	968	// CP0 in cluster 0 initializes the IOPIC device.
[188]	969	/////////////////////////////////////////////////////////////////////////////////
	970
	971	// all cores get pointer on local cluster manager & core descriptor
[14]	972	cluster = &cluster_manager;
[127]	973	core = &cluster->core_tbl[core_lid];
[1]	974
[188]	975	// all CP0s initialize the process_zero descriptor
[428]	976	if( core_lid == 0 ) process_zero_create( &process_zero );
[5]	977
[188]	978	// CP0 in cluster 0 initializes the PIC chdev,
	979	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
	980
	981	////////////////////////////////////////////////////////////////////////////////
[564]	982	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	983	(info->x_size * info->y_size) );
[188]	984	barrier_wait( &local_barrier , info->cores_nr );
	985	////////////////////////////////////////////////////////////////////////////////
[127]	986
[438]	987	#if DEBUG_KERNEL_INIT
	988	if( (core_lid == 0) & (local_cxy == 0) )
[564]	989	printk("\n[DBG] %s : exit barrier 2 : PIC initialised / sr %x / cycle %d\n",
	990	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	991	#endif
[1]	992
[188]	993	////////////////////////////////////////////////////////////////////////////////
[407]	994	// STEP 3 : CP0 initializes the distibuted LAPIC descriptor.
	995	// CP0 initializes the internal chdev descriptors
	996	// CP0 initialize the local external chdev descriptors
[188]	997	////////////////////////////////////////////////////////////////////////////////
[5]	998
[279]	999	// all CP0s initialize their local LAPIC extension,
	1000	if( core_lid == 0 ) lapic_init( info );
	1001
[188]	1002	// CP0 scan the internal (private) peripherals,
	1003	// and allocates memory for the corresponding chdev descriptors.
	1004	if( core_lid == 0 ) internal_devices_init( info );
	1005
[1]	1006
[50]	1007	// All CP0s contribute to initialise external peripheral chdev descriptors.
[14]	1008	// Each CP0[cxy] scan the set of external (shared) peripherals (but the TXT0),
	1009	// and allocates memory for the chdev descriptors that must be placed
[127]	1010	// on the (cxy) cluster according to the global index value.
[188]	1011
[14]	1012	if( core_lid == 0 ) external_devices_init( info );
[1]	1013
[14]	1014	/////////////////////////////////////////////////////////////////////////////////
[564]	1015	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	1016	(info->x_size * info->y_size) );
[14]	1017	barrier_wait( &local_barrier , info->cores_nr );
	1018	/////////////////////////////////////////////////////////////////////////////////
[5]	1019
[438]	1020	#if DEBUG_KERNEL_INIT
	1021	if( (core_lid == 0) & (local_cxy == 0) )
[564]	1022	printk("\n[DBG] %s : exit barrier 3 : all chdev initialised / sr %x / cycle %d\n",
	1023	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	1024	#endif
[1]	1025
[438]	1026	#if( DEBUG_KERNEL_INIT & 1 )
[443]	1027	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1028	chdev_dir_display();
	1029	#endif
	1030
[188]	1031	/////////////////////////////////////////////////////////////////////////////////
[279]	1032	// STEP 4 : All cores enable IPI (Inter Procesor Interrupt),
	1033	// Alh cores initialize IDLE thread.
[188]	1034	// Only CP0 in cluster 0 creates the VFS root inode.
	1035	// It access the boot device to initialize the file system context.
	1036	/////////////////////////////////////////////////////////////////////////////////
	1037
[564]	1038	// All cores enable IPI
[279]	1039	dev_pic_enable_ipi();
	1040	hal_enable_irq( &status );
	1041
[296]	1042	// all cores initialize the idle thread descriptor
[457]	1043	thread_idle_init( thread,
	1044	THREAD_IDLE,
	1045	&thread_idle_func,
	1046	NULL,
	1047	core_lid );
[1]	1048
[296]	1049	// all cores unblock idle thread, and register it in scheduler
	1050	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
[103]	1051	core->scheduler.idle = thread;
[1]	1052
[438]	1053	#if( DEBUG_KERNEL_INIT & 1 )
[407]	1054	sched_display( core_lid );
[389]	1055	#endif
[14]	1056
[188]	1057	// CPO in cluster 0 creates the VFS root
	1058	if( (core_lid == 0) && (local_cxy == 0 ) )
[14]	1059	{
[188]	1060	vfs_root_inode_xp = XPTR_NULL;
[23]	1061
[188]	1062	// File System must be FATFS in this implementation,
	1063	// but other File System can be introduced here
[23]	1064	if( CONFIG_VFS_ROOT_IS_FATFS )
	1065	{
[389]	1066	// 1. allocate memory for FATFS context in cluster 0
[188]	1067	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	1068
[564]	1069	if( fatfs_ctx == NULL )
	1070	printk("\n[PANIC] in %s : cannot create FATFS context in cluster 0\n",
	1071	__FUNCTION__ );
[188]	1072
	1073	// 2. access boot device to initialize FATFS context
	1074	fatfs_ctx_init( fatfs_ctx );
	1075
	1076	// 3. get various informations from FATFS context
	1077	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
	1078	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
	1079	fatfs_ctx->sectors_per_cluster;
	1080	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
	1081
[564]	1082	// 4. initialize the FATFS entry in the vfs_context[] array
	1083	vfs_ctx_init( FS_TYPE_FATFS, // fs type
	1084	0, // attributes: unused
	1085	total_clusters,
	1086	cluster_size,
	1087	vfs_root_inode_xp, // VFS root
	1088	fatfs_ctx ); // extend
	1089
	1090	// 5. create VFS root inode in cluster 0
[188]	1091	error = vfs_inode_create( XPTR_NULL, // dentry_xp
	1092	FS_TYPE_FATFS, // fs_type
	1093	INODE_TYPE_DIR, // inode_type
	1094	(void *)(intptr_t)root_dir_cluster, // extend
	1095	0, // attr
	1096	0, // rights
	1097	0, // uid
	1098	0, // gid
	1099	&vfs_root_inode_xp ); // return
[564]	1100	if( error )
	1101	printk("\n[PANIC] in %s : cannot create VFS root inode in cluster 0\n",
	1102	__FUNCTION__ );
[188]	1103
[564]	1104	// 6. update the FATFS entry in vfs_context[] array
	1105	fs_context[FS_TYPE_FATFS].vfs_root_xp = vfs_root_inode_xp;
[188]	1106
[564]	1107	// 7. check FATFS initialization
	1108	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
[389]	1109
[564]	1110	if( ((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster != 8 )
	1111	printk("\n[PANIC] in %s : illegal FATFS context in cluster 0\n",
	1112	__FUNCTION__ );
[23]	1113	}
	1114	else
	1115	{
[564]	1116	printk("\n[PANIC] in %s : unsupported VFS type in cluster 0\n",
	1117	__FUNCTION__ );
[23]	1118	}
	1119
[389]	1120	// register VFS root inode in process_zero descriptor of cluster 0
[188]	1121	process_zero.vfs_root_xp = vfs_root_inode_xp;
	1122	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
	1123	}
	1124
	1125	/////////////////////////////////////////////////////////////////////////////////
[564]	1126	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	1127	(info->x_size * info->y_size) );
[188]	1128	barrier_wait( &local_barrier , info->cores_nr );
	1129	/////////////////////////////////////////////////////////////////////////////////
	1130
[438]	1131	#if DEBUG_KERNEL_INIT
	1132	if( (core_lid == 0) & (local_cxy == 0) )
[564]	1133	printk("\n[DBG] %s : exit barrier 4 : VFS root initialized in cluster 0 / sr %x / cycle %d\n",
	1134	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	1135	#endif
[188]	1136
	1137	/////////////////////////////////////////////////////////////////////////////////
	1138	// STEP 5 : Other CP0s allocate memory for the selected FS context,
	1139	// and initialise both the local FS context and the local VFS context
	1140	// from values stored in cluster 0.
	1141	// They get the VFS root inode extended pointer from cluster 0.
	1142	/////////////////////////////////////////////////////////////////////////////////
	1143
	1144	if( (core_lid == 0) && (local_cxy != 0) )
	1145	{
	1146	// File System must be FATFS in this implementation,
	1147	// but other File System can be introduced here
	1148	if( CONFIG_VFS_ROOT_IS_FATFS )
[23]	1149	{
[389]	1150	// 1. allocate memory for local FATFS context
	1151	fatfs_ctx_t * local_fatfs_ctx = fatfs_ctx_alloc();
[188]	1152
[564]	1153	// check memory
	1154	if( local_fatfs_ctx == NULL )
	1155	printk("\n[PANIC] in %s : cannot create FATFS context in cluster %x\n",
	1156	__FUNCTION__ , local_cxy );
[188]	1157
[389]	1158	// 2. get local pointer on VFS context for FATFS
[188]	1159	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	1160
[389]	1161	// 3. get local pointer on FATFS context in cluster 0
	1162	fatfs_ctx_t * remote_fatfs_ctx = hal_remote_lpt( XPTR( 0 , &vfs_ctx->extend ) );
	1163
	1164	// 4. copy FATFS context from cluster 0 to local cluster
	1165	hal_remote_memcpy( XPTR( local_cxy , local_fatfs_ctx ),
	1166	XPTR( 0 , remote_fatfs_ctx ), sizeof(fatfs_ctx_t) );
	1167
	1168	// 5. copy VFS context from cluster 0 to local cluster
[188]	1169	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
[389]	1170	XPTR( 0 , vfs_ctx ), sizeof(vfs_ctx_t) );
[188]	1171
[389]	1172	// 6. update extend field in local copy of VFS context
	1173	vfs_ctx->extend = local_fatfs_ctx;
[188]	1174
[564]	1175	if( ((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster != 8 )
	1176	printk("\n[PANIC] in %s : illegal FATFS context in cluster %x\n",
	1177	__FUNCTION__ , local_cxy );
[23]	1178	}
	1179
[188]	1180	// get extended pointer on VFS root inode from cluster 0
[564]	1181	vfs_root_inode_xp = hal_remote_l64( XPTR( 0 , &process_zero.vfs_root_xp ) );
[101]	1182
[188]	1183	// update local process_zero descriptor
	1184	process_zero.vfs_root_xp = vfs_root_inode_xp;
	1185	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
[14]	1186	}
	1187
[188]	1188	/////////////////////////////////////////////////////////////////////////////////
[564]	1189	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	1190	(info->x_size * info->y_size) );
[188]	1191	barrier_wait( &local_barrier , info->cores_nr );
[204]	1192	/////////////////////////////////////////////////////////////////////////////////
[101]	1193
[438]	1194	#if DEBUG_KERNEL_INIT
[564]	1195	if( (core_lid == 0) & (local_cxy == 1) )
	1196	printk("\n[DBG] %s : exit barrier 5 : VFS root initialized in cluster 1 / sr %x / cycle %d\n",
	1197	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	1198	#endif
[188]	1199
	1200	/////////////////////////////////////////////////////////////////////////////////
[564]	1201	// STEP 6 : CP0 in cluster 0 makes the global DEVFS tree initialisation:
	1202	// It initializes the DEVFS context, and creates the DEVFS
	1203	// "dev" and "external" inodes in cluster 0.
[188]	1204	/////////////////////////////////////////////////////////////////////////////////
	1205
[564]	1206	if( (core_lid == 0) && (local_cxy == 0) )
[1]	1207	{
[564]	1208	// 1. allocate memory for DEVFS context extension in cluster 0
	1209	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
	1210
	1211	if( devfs_ctx == NULL )
	1212	printk("\n[PANIC] in %s : cannot create DEVFS context in cluster 0\n",
	1213	__FUNCTION__ , local_cxy );
	1214
	1215	// 2. initialize the DEVFS entry in the vfs_context[] array
	1216	vfs_ctx_init( FS_TYPE_DEVFS, // fs type
	1217	0, // attributes: unused
	1218	0, // total_clusters: unused
	1219	0, // cluster_size: unused
	1220	vfs_root_inode_xp, // VFS root
	1221	devfs_ctx ); // extend
	1222
	1223	// 3. create "dev" and "external" inodes (directories)
[188]	1224	devfs_global_init( process_zero.vfs_root_xp,
[204]	1225	&devfs_dev_inode_xp,
[188]	1226	&devfs_external_inode_xp );
	1227
[564]	1228	// 4. initializes DEVFS context extension
	1229	devfs_ctx_init( devfs_ctx,
	1230	devfs_dev_inode_xp,
	1231	devfs_external_inode_xp );
[188]	1232	}
	1233
	1234	/////////////////////////////////////////////////////////////////////////////////
[564]	1235	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	1236	(info->x_size * info->y_size) );
[188]	1237	barrier_wait( &local_barrier , info->cores_nr );
[204]	1238	/////////////////////////////////////////////////////////////////////////////////
[188]	1239
[438]	1240	#if DEBUG_KERNEL_INIT
	1241	if( (core_lid == 0) & (local_cxy == 0) )
[564]	1242	printk("\n[DBG] %s : exit barrier 6 : DEVFS root initialized in cluster 0 / sr %x / cycle %d\n",
	1243	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	1244	#endif
[188]	1245
	1246	/////////////////////////////////////////////////////////////////////////////////
	1247	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
	1248	// Each CP0 get the "dev" and "external" extended pointers from
[564]	1249	// values stored in cluster 0.
	1250	// Then each CP0 in cluster(i) creates the DEVFS "internal" directory,
[204]	1251	// and creates the pseudo-files for all chdevs in cluster (i).
[188]	1252	/////////////////////////////////////////////////////////////////////////////////
	1253
	1254	if( core_lid == 0 )
	1255	{
[564]	1256	// get extended pointer on "extend" field of VFS context for DEVFS in cluster 0
	1257	xptr_t extend_xp = XPTR( 0 , &fs_context[FS_TYPE_DEVFS].extend );
[188]	1258
[457]	1259	// get pointer on DEVFS context in cluster 0
[188]	1260	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
	1261
[564]	1262	devfs_dev_inode_xp = hal_remote_l64( XPTR( 0 , &devfs_ctx->dev_inode_xp ) );
	1263	devfs_external_inode_xp = hal_remote_l64( XPTR( 0 , &devfs_ctx->external_inode_xp ) );
[188]	1264
[204]	1265	// populate DEVFS in all clusters
	1266	devfs_local_init( devfs_dev_inode_xp,
	1267	devfs_external_inode_xp,
	1268	&devfs_internal_inode_xp );
[188]	1269	}
	1270
	1271	/////////////////////////////////////////////////////////////////////////////////
[564]	1272	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	1273	(info->x_size * info->y_size) );
[188]	1274	barrier_wait( &local_barrier , info->cores_nr );
[204]	1275	/////////////////////////////////////////////////////////////////////////////////
[188]	1276
[438]	1277	#if DEBUG_KERNEL_INIT
	1278	if( (core_lid == 0) & (local_cxy == 0) )
[564]	1279	printk("\n[DBG] %s : exit barrier 7 : DEV initialized in cluster 0 / sr %x / cycle %d\n",
	1280	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	1281	#endif
[188]	1282
	1283	/////////////////////////////////////////////////////////////////////////////////
[428]	1284	// STEP 8 : CP0 in cluster 0 creates the first user process (process_init)
[188]	1285	/////////////////////////////////////////////////////////////////////////////////
	1286
[457]	1287	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1288	{
[428]	1289
[438]	1290	#if( DEBUG_KERNEL_INIT & 1 )
[428]	1291	vfs_display( vfs_root_inode_xp );
	1292	#endif
	1293
	1294	process_init_create();
[188]	1295	}
[101]	1296
[188]	1297	/////////////////////////////////////////////////////////////////////////////////
[564]	1298	if( core_lid == 0 ) xbarrier_wait( XPTR( 0 , &global_barrier ),
	1299	(info->x_size * info->y_size) );
[188]	1300	barrier_wait( &local_barrier , info->cores_nr );
[204]	1301	/////////////////////////////////////////////////////////////////////////////////
[188]	1302
[438]	1303	#if DEBUG_KERNEL_INIT
	1304	if( (core_lid == 0) & (local_cxy == 0) )
[564]	1305	printk("\n[DBG] %s : exit barrier 8 : process init created / sr %x / cycle %d\n",
	1306	__FUNCTION__, (uint32_t)hal_get_sr(), (uint32_t)hal_get_cycles() );
[437]	1307	#endif
[188]	1308
[443]	1309	#if (DEBUG_KERNEL_INIT & 1)
[564]	1310	if( (core_lid == 0) & (local_cxy == 0) )
[443]	1311	sched_display( 0 );
	1312	#endif
	1313
[188]	1314	/////////////////////////////////////////////////////////////////////////////////
	1315	// STEP 9 : CP0 in cluster 0 print banner
	1316	/////////////////////////////////////////////////////////////////////////////////
	1317
[564]	1318	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1319	{
[5]	1320	print_banner( (info->x_size * info->y_size) , info->cores_nr );
[68]	1321
[438]	1322	#if( DEBUG_KERNEL_INIT & 1 )
[437]	1323	printk("\n\n***** memory fooprint for main kernel objects\n\n"
[68]	1324	" - thread descriptor : %d bytes\n"
	1325	" - process descriptor : %d bytes\n"
	1326	" - cluster manager : %d bytes\n"
	1327	" - chdev descriptor : %d bytes\n"
	1328	" - core descriptor : %d bytes\n"
	1329	" - scheduler : %d bytes\n"
	1330	" - rpc fifo : %d bytes\n"
	1331	" - page descriptor : %d bytes\n"
	1332	" - mapper root : %d bytes\n"
	1333	" - ppm manager : %d bytes\n"
	1334	" - kcm manager : %d bytes\n"
	1335	" - khm manager : %d bytes\n"
	1336	" - vmm manager : %d bytes\n"
	1337	" - gpt root : %d bytes\n"
	1338	" - list item : %d bytes\n"
	1339	" - xlist item : %d bytes\n"
[564]	1340	" - busylock : %d bytes\n"
	1341	" - remote busylock : %d bytes\n"
	1342	" - queuelock : %d bytes\n"
	1343	" - remote queuelock : %d bytes\n"
[68]	1344	" - rwlock : %d bytes\n"
	1345	" - remote rwlock : %d bytes\n",
[564]	1346	sizeof( thread_t ),
	1347	sizeof( process_t ),
	1348	sizeof( cluster_t ),
	1349	sizeof( chdev_t ),
	1350	sizeof( core_t ),
	1351	sizeof( scheduler_t ),
	1352	sizeof( remote_fifo_t ),
	1353	sizeof( page_t ),
	1354	sizeof( mapper_t ),
	1355	sizeof( ppm_t ),
	1356	sizeof( kcm_t ),
	1357	sizeof( khm_t ),
	1358	sizeof( vmm_t ),
	1359	sizeof( gpt_t ),
	1360	sizeof( list_entry_t ),
	1361	sizeof( xlist_entry_t ),
	1362	sizeof( busylock_t ),
	1363	sizeof( remote_busylock_t ),
	1364	sizeof( queuelock_t ),
	1365	sizeof( remote_queuelock_t ),
	1366	sizeof( rwlock_t ),
	1367	sizeof( remote_rwlock_t ));
[406]	1368	#endif
	1369
[1]	1370	}
	1371
[398]	1372	// each core activates its private TICK IRQ
	1373	dev_pic_enable_timer( CONFIG_SCHED_TICK_MS_PERIOD );
[14]	1374
[440]	1375	#if DEBUG_KERNEL_INIT
	1376	printk("\n[DBG] %s : thread %x on core[%x,%d] jumps to thread_idle_func() / cycle %d\n",
	1377	__FUNCTION__ , CURRENT_THREAD , local_cxy , core_lid , (uint32_t)hal_get_cycles() );
	1378	#endif
	1379
[407]	1380	// each core jump to thread_idle_func
[50]	1381	thread_idle_func();
[127]	1382	}
[14]	1383

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