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source: trunk/kernel/kern/kernel_init.c @ 525

Last change on this file since 525 was 517, checked in by viala@…, 6 years ago

Revert rev515. I introduced a problem.

The fact is that entry is initialized but we make a lot of if.
This is really misleading and quite ineficient.

File size: 53.0 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>
[296]	31	#include <hal_ppm.h>
[14]	32	#include <barrier.h>
[1]	33	#include <remote_barrier.h>
[407]	34	#include <remote_fifo.h>
[1]	35	#include <core.h>
	36	#include <list.h>
[68]	37	#include <xlist.h>
[204]	38	#include <xhtab.h>
[1]	39	#include <thread.h>
	40	#include <scheduler.h>
	41	#include <kmem.h>
	42	#include <cluster.h>
	43	#include <string.h>
	44	#include <memcpy.h>
	45	#include <ppm.h>
	46	#include <page.h>
[5]	47	#include <chdev.h>
[1]	48	#include <boot_info.h>
	49	#include <dqdt.h>
	50	#include <dev_mmc.h>
[5]	51	#include <dev_dma.h>
	52	#include <dev_iob.h>
[1]	53	#include <dev_ioc.h>
[5]	54	#include <dev_txt.h>
[1]	55	#include <dev_pic.h>
	56	#include <printk.h>
	57	#include <vfs.h>
[23]	58	#include <devfs.h>
[68]	59	#include <mapper.h>
[1]	60
	61	///////////////////////////////////////////////////////////////////////////////////////////
[279]	62	// All the following global variables are replicated in all clusters.
[1]	63	// They are initialised by the kernel_init() function.
[14]	64	//
[127]	65	// WARNING : The section names have been defined to control the base addresses of the
[14]	66	// boot_info structure and the idle thread descriptors, through the kernel.ld script:
[127]	67	// - the boot_info structure is built by the bootloader, and used by kernel_init.
	68	// it must be the first object in the kdata segment.
[14]	69	// - the array of idle threads descriptors must be placed on the first page boundary after
	70	// the boot_info structure in the kdata segment.
[1]	71	///////////////////////////////////////////////////////////////////////////////////////////
	72
[5]	73	// This variable defines the local boot_info structure
	74	__attribute__((section(".kinfo")))
[14]	75	boot_info_t boot_info;
[5]	76
[14]	77	// This variable defines the "idle" threads descriptors array
	78	__attribute__((section(".kidle")))
[381]	79	char idle_threads[CONFIG_THREAD_DESC_SIZE *
[14]	80	CONFIG_MAX_LOCAL_CORES] CONFIG_PPM_PAGE_ALIGNED;
	81
[127]	82	// This variable defines the local cluster manager
[5]	83	__attribute__((section(".kdata")))
[19]	84	cluster_t cluster_manager CONFIG_CACHE_LINE_ALIGNED;
[1]	85
[407]	86	// This variable defines the TXT0 kernel terminal (TX only)
[188]	87	__attribute__((section(".kdata")))
	88	chdev_t txt0_chdev CONFIG_CACHE_LINE_ALIGNED;
	89
[14]	90	// This variables define the kernel process0 descriptor
[5]	91	__attribute__((section(".kdata")))
[19]	92	process_t process_zero CONFIG_CACHE_LINE_ALIGNED;
[1]	93
[14]	94	// This variable defines extended pointers on the distributed chdevs
[5]	95	__attribute__((section(".kdata")))
[14]	96	chdev_directory_t chdev_dir CONFIG_CACHE_LINE_ALIGNED;
[1]	97
[188]	98	// This variable contains the input IRQ indexes for the IOPIC controller
[5]	99	__attribute__((section(".kdata")))
[246]	100	iopic_input_t iopic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	101
[188]	102	// This variable contains the input IRQ indexes for the LAPIC controller
[5]	103	__attribute__((section(".kdata")))
[188]	104	lapic_input_t lapic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	105
[14]	106	// This variable defines the local cluster identifier
[5]	107	__attribute__((section(".kdata")))
[14]	108	cxy_t local_cxy CONFIG_CACHE_LINE_ALIGNED;
[5]	109
[127]	110	// This variable is used for CP0 cores synchronisation in kernel_init()
[5]	111	__attribute__((section(".kdata")))
[14]	112	remote_barrier_t global_barrier CONFIG_CACHE_LINE_ALIGNED;
[1]	113
[127]	114	// This variable is used for local cores synchronisation in kernel_init()
[14]	115	__attribute__((section(".kdata")))
	116	barrier_t local_barrier CONFIG_CACHE_LINE_ALIGNED;
	117
[127]	118	// This variable defines the array of supported File System contexts
[50]	119	__attribute__((section(".kdata")))
	120	vfs_ctx_t fs_context[FS_TYPES_NR] CONFIG_CACHE_LINE_ALIGNED;
	121
[490]	122	// kernel_init is the entry point defined in hal/tsar_mips32/kernel.ld
	123	// It will be used by the bootloader.
	124	extern void kernel_init( boot_info_t * info );
[50]	125
[435]	126	// these debug variables are used to analyse the sys_read() syscall timing
[408]	127
[438]	128	#if DEBUG_SYS_READ
[407]	129	uint32_t enter_sys_read;
	130	uint32_t exit_sys_read;
	131
[435]	132	uint32_t enter_devfs_read;
	133	uint32_t exit_devfs_read;
[407]	134
	135	uint32_t enter_txt_read;
	136	uint32_t exit_txt_read;
	137
[435]	138	uint32_t enter_chdev_cmd_read;
	139	uint32_t exit_chdev_cmd_read;
[407]	140
[435]	141	uint32_t enter_chdev_server_read;
	142	uint32_t exit_chdev_server_read;
[407]	143
[435]	144	uint32_t enter_tty_cmd_read;
	145	uint32_t exit_tty_cmd_read;
[407]	146
[435]	147	uint32_t enter_tty_isr_read;
	148	uint32_t exit_tty_isr_read;
[407]	149	#endif
	150
[435]	151	// these debug variables are used to analyse the sys_write() syscall timing
	152
[438]	153	#if DEBUG_SYS_WRITE
[435]	154	uint32_t enter_sys_write;
	155	uint32_t exit_sys_write;
	156
	157	uint32_t enter_devfs_write;
	158	uint32_t exit_devfs_write;
	159
	160	uint32_t enter_txt_write;
	161	uint32_t exit_txt_write;
	162
	163	uint32_t enter_chdev_cmd_write;
	164	uint32_t exit_chdev_cmd_write;
	165
	166	uint32_t enter_chdev_server_write;
	167	uint32_t exit_chdev_server_write;
	168
	169	uint32_t enter_tty_cmd_write;
	170	uint32_t exit_tty_cmd_write;
	171
	172	uint32_t enter_tty_isr_write;
	173	uint32_t exit_tty_isr_write;
	174	#endif
	175
[1]	176	///////////////////////////////////////////////////////////////////////////////////////////
[5]	177	// This function displays the ALMOS_MKH banner.
[1]	178	///////////////////////////////////////////////////////////////////////////////////////////
[5]	179	static void print_banner( uint32_t nclusters , uint32_t ncores )
[127]	180	{
[5]	181	printk("\n"
	182	" _ __ __ _____ ______ __ __ _ __ _ _ \n"
	183	" /\\ \| \| \| \\ / \| / ___ \\ / _____\| \| \\ / \| \| \| / / \| \| \| \| \n"
	184	" / \\ \| \| \| \\/ \| \| / \\ \| \| / \| \\/ \| \| \|/ / \| \| \| \| \n"
	185	" / /\\ \\ \| \| \| \|\\ /\| \| \| \| \| \| \| \|_____ ___ \| \|\\ /\| \| \| / \| \|___\| \| \n"
	186	" / /__\\ \\ \| \| \| \| \\/ \| \| \| \| \| \| \\_____ \\ \|___\| \| \| \\/ \| \| \| \\ \| ___ \| \n"
	187	" / ______ \\ \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|\\ \\ \| \| \| \| \n"
	188	" / / \\ \\ \| \|____ \| \| \| \| \| \\___/ \| _____/ \| \| \| \| \| \| \| \\ \\ \| \| \| \| \n"
	189	" /_/ \\_\\ \|______\| \|_\| \|_\| \\_____/ \|______/ \|_\| \|_\| \|_\| \\_\\ \|_\| \|_\| \n"
	190	"\n\n\t\t Advanced Locality Management Operating System / Multi Kernel Hybrid\n"
[457]	191	"\n\n\t\t %s / %d cluster(s) / %d core(s) per cluster\n\n",
	192	CONFIG_ALMOS_VERSION , nclusters , ncores );
[5]	193	}
[1]	194
	195
[5]	196	///////////////////////////////////////////////////////////////////////////////////////////
[188]	197	// This function initializes the TXT0 chdev descriptor, that is the "kernel terminal",
	198	// shared by all kernel instances for debug messages.
	199	// It is a global variable (replicated in all clusters), because this terminal is used
	200	// before the kmem allocator initialisation, but only the instance in cluster containing
	201	// the calling core is registered in the "chdev_dir" directory.
[127]	202	// As this TXT0 chdev supports only the TXT_SYNC_WRITE command, we don't create
	203	// a server thread, we don't allocate a WTI, and we don't initialize the waiting queue.
[5]	204	///////////////////////////////////////////////////////////////////////////////////////////
	205	// @ info : pointer on the local boot-info structure.
	206	///////////////////////////////////////////////////////////////////////////////////////////
	207	static void txt0_device_init( boot_info_t * info )
	208	{
	209	boot_device_t * dev_tbl; // pointer on array of devices in boot_info
[127]	210	uint32_t dev_nr; // actual number of devices in this cluster
	211	xptr_t base; // remote pointer on segment base
	212	uint32_t func; // device functional index
[5]	213	uint32_t impl; // device implementation index
[127]	214	uint32_t i; // device index in dev_tbl
	215	uint32_t x; // X cluster coordinate
	216	uint32_t y; // Y cluster coordinate
[188]	217	uint32_t channels; // number of channels
[1]	218
[5]	219	// get number of peripherals and base of devices array from boot_info
[127]	220	dev_nr = info->ext_dev_nr;
[5]	221	dev_tbl = info->ext_dev;
[1]	222
[14]	223	// loop on external peripherals to find TXT device
[127]	224	for( i = 0 ; i < dev_nr ; i++ )
	225	{
[5]	226	base = dev_tbl[i].base;
[188]	227	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	228	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	229	channels = dev_tbl[i].channels;
[5]	230
[127]	231	if (func == DEV_FUNC_TXT )
[5]	232	{
[492]	233	assert( (channels > 0) , "number of TXT channels cannot be 0\n");
[5]	234
[428]	235	// initializes TXT_TX[0] chdev
[188]	236	txt0_chdev.func = func;
	237	txt0_chdev.impl = impl;
	238	txt0_chdev.channel = 0;
	239	txt0_chdev.base = base;
	240	txt0_chdev.is_rx = false;
	241
	242	// initializes lock
[14]	243	remote_spinlock_init( XPTR( local_cxy , &txt0_chdev.wait_lock ) );
[188]	244
	245	// TXT specific initialisation:
	246	// no server thread & no IRQ routing for channel 0
	247	dev_txt_init( &txt0_chdev );
[14]	248
[188]	249	// register the TXT0 in all chdev_dir[x][y] structures
[5]	250	for( x = 0 ; x < info->x_size ; x++ )
	251	{
	252	for( y = 0 ; y < info->y_size ; y++ )
	253	{
	254	cxy_t cxy = (x<<info->y_width) + y;
[407]	255	hal_remote_swd( XPTR( cxy , &chdev_dir.txt_tx[0] ) ,
[14]	256	XPTR( local_cxy , &txt0_chdev ) );
[5]	257	}
	258	}
	259	}
[188]	260	} // end loop on devices
	261	} // end txt0_device_init()
[5]	262
[1]	263	///////////////////////////////////////////////////////////////////////////////////////////
[188]	264	// This function allocates memory and initializes the chdev descriptors for the internal
	265	// peripherals contained in the local cluster, other than the LAPIC, as specified by
	266	// the boot_info, including the linking with the driver for the specified implementation.
	267	// The relevant entries in all copies of the devices directory are initialised.
[1]	268	///////////////////////////////////////////////////////////////////////////////////////////
	269	// @ info : pointer on the local boot-info structure.
	270	///////////////////////////////////////////////////////////////////////////////////////////
[5]	271	static void internal_devices_init( boot_info_t * info )
[1]	272	{
[188]	273	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
	274	uint32_t dev_nr; // actual number of devices in this cluster
	275	xptr_t base; // remote pointer on segment base
	276	uint32_t func; // device functionnal index
	277	uint32_t impl; // device implementation index
	278	uint32_t i; // device index in dev_tbl
	279	uint32_t x; // X cluster coordinate
	280	uint32_t y; // Y cluster coordinate
	281	uint32_t channels; // number of channels
	282	uint32_t channel; // channel index
	283	chdev_t * chdev_ptr; // local pointer on created chdev
[1]	284
[188]	285	// get number of internal peripherals and base from boot_info
	286	dev_nr = info->int_dev_nr;
	287	dev_tbl = info->int_dev;
[1]	288
[188]	289	// loop on internal peripherals
	290	for( i = 0 ; i < dev_nr ; i++ )
	291	{
	292	base = dev_tbl[i].base;
	293	channels = dev_tbl[i].channels;
	294	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	295	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[204]	296
[188]	297	//////////////////////////
	298	if( func == DEV_FUNC_MMC )
[5]	299	{
[492]	300	assert( (channels == 1) , "MMC device must be single channel\n" );
[1]	301
[188]	302	// create chdev in local cluster
	303	chdev_ptr = chdev_create( func,
	304	impl,
	305	0, // channel
	306	false, // direction
	307	base );
[14]	308
[492]	309	assert( (chdev_ptr != NULL) ,
[188]	310	"cannot allocate memory for MMC chdev\n" );
	311
	312	// make MMC specific initialisation
	313	dev_mmc_init( chdev_ptr );
[1]	314
[188]	315	// set the MMC field in all chdev_dir[x][y] structures
	316	for( x = 0 ; x < info->x_size ; x++ )
[1]	317	{
[188]	318	for( y = 0 ; y < info->y_size ; y++ )
	319	{
	320	cxy_t cxy = (x<<info->y_width) + y;
	321	hal_remote_swd( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
	322	XPTR( local_cxy , chdev_ptr ) );
	323	}
[1]	324	}
[188]	325
[438]	326	#if( DEBUG_KERNEL_INIT & 0x1 )
	327	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	328	printk("\n[DBG] %s : created MMC in cluster %x / chdev = %x\n",
	329	__FUNCTION__ , local_cxy , chdev_ptr );
[389]	330	#endif
[14]	331	}
[188]	332	///////////////////////////////
	333	else if( func == DEV_FUNC_DMA )
[127]	334	{
[188]	335	// create one chdev per channel in local cluster
	336	for( channel = 0 ; channel < channels ; channel++ )
	337	{
	338	// create chdev[channel] in local cluster
	339	chdev_ptr = chdev_create( func,
	340	impl,
	341	channel,
	342	false, // direction
	343	base );
[5]	344
[492]	345	assert( (chdev_ptr != NULL) , "cannot allocate memory for DMA chdev" );
[188]	346
	347	// make DMA specific initialisation
	348	dev_dma_init( chdev_ptr );
[127]	349
[188]	350	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
	351	// structure because the DMA device is not remotely accessible.
	352	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
[5]	353
[438]	354	#if( DEBUG_KERNEL_INIT & 0x1 )
	355	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	356	printk("\n[DBG] %s : created DMA[%d] in cluster %x / chdev = %x\n",
[389]	357	__FUNCTION__ , channel , local_cxy , chdev_ptr );
	358	#endif
[188]	359	}
[14]	360	}
[127]	361	}
[5]	362	} // end internal_devices_init()
	363
	364	///////////////////////////////////////////////////////////////////////////////////////////
[188]	365	// This function allocates memory and initializes the chdev descriptors for the
[408]	366	// external (shared) peripherals other than the IOPIC, as specified by the boot_info.
	367	// This includes the dynamic linking with the driver for the specified implementation.
[188]	368	// These chdev descriptors are distributed on all clusters, using a modulo on a global
[408]	369	// index, identically computed in all clusters.
	370	// This function is executed in all clusters by the CP0 core, that computes a global index
	371	// for all external chdevs. Each CP0 core creates only the chdevs that must be placed in
	372	// the local cluster, because the global index matches the local index.
[188]	373	// The relevant entries in all copies of the devices directory are initialised.
[5]	374	///////////////////////////////////////////////////////////////////////////////////////////
	375	// @ info : pointer on the local boot-info structure.
	376	///////////////////////////////////////////////////////////////////////////////////////////
	377	static void external_devices_init( boot_info_t * info )
	378	{
[188]	379	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
	380	uint32_t dev_nr; // actual number of external devices
	381	xptr_t base; // remote pointer on segment base
[5]	382	uint32_t func; // device functionnal index
	383	uint32_t impl; // device implementation index
[188]	384	uint32_t i; // device index in dev_tbl
	385	uint32_t x; // X cluster coordinate
	386	uint32_t y; // Y cluster coordinate
	387	uint32_t channels; // number of channels
	388	uint32_t channel; // channel index
	389	uint32_t directions; // number of directions (1 or 2)
	390	uint32_t rx; // direction index (0 or 1)
[127]	391	chdev_t * chdev; // local pointer on one channel_device descriptor
[188]	392	uint32_t ext_chdev_gid; // global index of external chdev
[5]	393
	394	// get number of peripherals and base of devices array from boot_info
[127]	395	dev_nr = info->ext_dev_nr;
[5]	396	dev_tbl = info->ext_dev;
	397
[188]	398	// initializes global index (PIC is already placed in cluster 0
	399	ext_chdev_gid = 1;
	400
[5]	401	// loop on external peripherals
[127]	402	for( i = 0 ; i < dev_nr ; i++ )
	403	{
[188]	404	base = dev_tbl[i].base;
	405	channels = dev_tbl[i].channels;
	406	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	407	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	408
[407]	409	// There is one chdev per direction for NIC and for TXT
	410	if((func == DEV_FUNC_NIC) \|\| (func == DEV_FUNC_TXT)) directions = 2;
	411	else directions = 1;
[5]	412
[407]	413	// do nothing for ROM, that does not require a device descriptor.
[5]	414	if( func == DEV_FUNC_ROM ) continue;
	415
[188]	416	// do nothing for PIC, that is already initialized
	417	if( func == DEV_FUNC_PIC ) continue;
[5]	418
[188]	419	// check PIC device initialized
[492]	420	assert( (chdev_dir.pic != XPTR_NULL ) ,
[188]	421	"PIC device must be initialized before other devices\n" );
	422
	423	// check external device functionnal type
	424	assert( ( (func == DEV_FUNC_IOB) \|\|
	425	(func == DEV_FUNC_IOC) \|\|
	426	(func == DEV_FUNC_TXT) \|\|
	427	(func == DEV_FUNC_NIC) \|\|
[492]	428	(func == DEV_FUNC_FBF) ) ,
[188]	429	"undefined external peripheral type\n" );
	430
[127]	431	// loops on channels
[428]	432	for( channel = 0 ; channel < channels ; channel++ )
[127]	433	{
[5]	434	// loop on directions
[188]	435	for( rx = 0 ; rx < directions ; rx++ )
[1]	436	{
[428]	437	// skip TXT_TX[0] chdev that has already been created & registered
	438	if( (func == DEV_FUNC_TXT) && (channel == 0) && (rx == 0) ) continue;
	439
[188]	440	// compute target cluster for chdev[func,channel,direction]
	441	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
[5]	442	uint32_t cx = offset / info->y_size;
	443	uint32_t cy = offset % info->y_size;
	444	uint32_t target_cxy = (cx<<info->y_width) + cy;
[1]	445
[5]	446	// allocate and initialize a local chdev
[407]	447	// when local cluster matches target cluster
[5]	448	if( target_cxy == local_cxy )
[1]	449	{
[5]	450	chdev = chdev_create( func,
	451	impl,
	452	channel,
[188]	453	rx, // direction
[5]	454	base );
	455
[492]	456	assert( (chdev != NULL),
[5]	457	"cannot allocate external device" );
	458
	459	// make device type specific initialisation
	460	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
	461	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
	462	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
	463	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
[188]	464	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
[5]	465
[127]	466	// all external (shared) devices are remotely accessible
[5]	467	// initialize the replicated chdev_dir[x][y] structures
[127]	468	// defining the extended pointers on chdev descriptors
	469	xptr_t * entry;
	470
[188]	471	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
	472	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
	473	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
[407]	474	if((func==DEV_FUNC_TXT) && (rx==0)) entry = &chdev_dir.txt_tx[channel];
	475	if((func==DEV_FUNC_TXT) && (rx==1)) entry = &chdev_dir.txt_rx[channel];
[188]	476	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
	477	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
[127]	478
[1]	479	for( x = 0 ; x < info->x_size ; x++ )
	480	{
	481	for( y = 0 ; y < info->y_size ; y++ )
	482	{
	483	cxy_t cxy = (x<<info->y_width) + y;
[188]	484	hal_remote_swd( XPTR( cxy , entry ),
	485	XPTR( local_cxy , chdev ) );
[5]	486	}
[1]	487	}
	488
[438]	489	#if( DEBUG_KERNEL_INIT & 0x1 )
	490	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	491	printk("\n[DBG] %s : create chdev %s / channel = %d / rx = %d / cluster %x / chdev = %x\n",
	492	__FUNCTION__ , chdev_func_str( func ), channel , rx , local_cxy , chdev );
[389]	493	#endif
[5]	494	} // end if match
	495
[19]	496	// increment chdev global index (matching or not)
[188]	497	ext_chdev_gid++;
[5]	498
	499	} // end loop on directions
	500	} // end loop on channels
[188]	501	} // end loop on devices
	502	} // end external_devices_init()
[5]	503
[188]	504	///////////////////////////////////////////////////////////////////////////////////////////
	505	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
[407]	506	// device, namely the informations attached to the external IOPIC controller, that
	507	// must be replicated in all clusters (struct iopic_input).
[188]	508	// This initialisation must be done before other devices initialisation because the IRQ
[407]	509	// routing infrastructure is required for both internal and external devices init.
[188]	510	///////////////////////////////////////////////////////////////////////////////////////////
	511	// @ info : pointer on the local boot-info structure.
	512	///////////////////////////////////////////////////////////////////////////////////////////
	513	static void iopic_init( boot_info_t * info )
	514	{
	515	boot_device_t * dev_tbl; // pointer on boot_info external devices array
	516	uint32_t dev_nr; // actual number of external devices
	517	xptr_t base; // remote pointer on segment base
	518	uint32_t func; // device functionnal index
	519	uint32_t impl; // device implementation index
	520	uint32_t i; // device index in dev_tbl
	521	uint32_t x; // cluster X coordinate
	522	uint32_t y; // cluster Y coordinate
	523	bool_t found; // IOPIC found
	524	chdev_t * chdev; // pointer on PIC chdev descriptor
	525
	526	// get number of external peripherals and base of array from boot_info
	527	dev_nr = info->ext_dev_nr;
	528	dev_tbl = info->ext_dev;
	529
	530	// loop on external peripherals to get the IOPIC
	531	for( i = 0 , found = false ; i < dev_nr ; i++ )
	532	{
	533	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	534
[127]	535	if( func == DEV_FUNC_PIC )
[1]	536	{
[188]	537	base = dev_tbl[i].base;
	538	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	539	found = true;
	540	break;
	541	}
	542	}
[5]	543
[492]	544	assert( found , "PIC device not found\n" );
[1]	545
[407]	546	// allocate and initialize the PIC chdev in cluster 0
	547	chdev = chdev_create( DEV_FUNC_PIC,
[188]	548	impl,
	549	0, // channel
	550	0, // direction,
	551	base );
[5]	552
[492]	553	assert( (chdev != NULL), "no memory for PIC chdev\n" );
[5]	554
[188]	555	// make PIC device type specific initialisation
	556	dev_pic_init( chdev );
[1]	557
[407]	558	// register, in all clusters, the extended pointer
	559	// on PIC chdev in "chdev_dir" array
[188]	560	xptr_t * entry = &chdev_dir.pic;
	561
	562	for( x = 0 ; x < info->x_size ; x++ )
	563	{
	564	for( y = 0 ; y < info->y_size ; y++ )
	565	{
	566	cxy_t cxy = (x<<info->y_width) + y;
	567	hal_remote_swd( XPTR( cxy , entry ) ,
	568	XPTR( local_cxy , chdev ) );
	569	}
	570	}
[1]	571
[407]	572	// initialize, in all clusters, the "iopic_input" structure
[188]	573	// defining how external IRQs are connected to IOPIC
	574
[407]	575	// register default value for unused inputs
	576	for( x = 0 ; x < info->x_size ; x++ )
	577	{
	578	for( y = 0 ; y < info->y_size ; y++ )
	579	{
	580	cxy_t cxy = (x<<info->y_width) + y;
	581	hal_remote_memset( XPTR( cxy , &iopic_input ) , 0xFF , sizeof(iopic_input_t) );
	582	}
	583	}
	584
	585	// register input IRQ index for valid inputs
	586	uint32_t id; // input IRQ index
	587	uint8_t valid; // input IRQ is connected
	588	uint32_t type; // source device type
	589	uint8_t channel; // source device channel
	590	uint8_t is_rx; // source device direction
	591	uint32_t * ptr; // local pointer on one field in iopic_input stucture
	592
[188]	593	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
	594	{
	595	valid = dev_tbl[i].irq[id].valid;
	596	type = dev_tbl[i].irq[id].dev_type;
	597	channel = dev_tbl[i].irq[id].channel;
	598	is_rx = dev_tbl[i].irq[id].is_rx;
[407]	599	func = FUNC_FROM_TYPE( type );
[188]	600
[407]	601	// get pointer on relevant field in iopic_input
	602	if( valid )
[188]	603	{
[407]	604	if ( func == DEV_FUNC_IOC ) ptr = &iopic_input.ioc[channel];
	605	else if((func == DEV_FUNC_TXT) && (is_rx == 0)) ptr = &iopic_input.txt_tx[channel];
	606	else if((func == DEV_FUNC_TXT) && (is_rx != 0)) ptr = &iopic_input.txt_rx[channel];
[492]	607	else if((func == DEV_FUNC_NIC) && (is_rx == 0)) ptr = &iopic_input.nic_tx[channel];
	608	else if((func == DEV_FUNC_NIC) && (is_rx != 0)) ptr = &iopic_input.nic_rx[channel];
	609	else if( func == DEV_FUNC_IOB ) ptr = &iopic_input.iob;
	610	else assert( false , "illegal source device for IOPIC input" );
[188]	611
[407]	612	// set one entry in all "iopic_input" structures
	613	for( x = 0 ; x < info->x_size ; x++ )
	614	{
	615	for( y = 0 ; y < info->y_size ; y++ )
	616	{
	617	cxy_t cxy = (x<<info->y_width) + y;
	618	hal_remote_swd( XPTR( cxy , ptr ) , id );
	619	}
	620	}
[188]	621	}
	622	}
	623
[438]	624	#if( DEBUG_KERNEL_INIT & 0x1 )
	625	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	626	{
	627	printk("\n[DBG] %s created PIC chdev in cluster %x at cycle %d\n",
	628	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
	629	dev_pic_inputs_display();
	630	}
[389]	631	#endif
[188]	632
	633	} // end iopic_init()
	634
[1]	635	///////////////////////////////////////////////////////////////////////////////////////////
[188]	636	// This function is called by all CP0s in all cluster to complete the PIC device
	637	// initialisation, namely the informations attached to the LAPIC controller.
	638	// This initialisation must be done after the IOPIC initialisation, but before other
	639	// devices initialisation because the IRQ routing infrastructure is required for both
	640	// internal and external devices initialisation.
	641	///////////////////////////////////////////////////////////////////////////////////////////
	642	// @ info : pointer on the local boot-info structure.
	643	///////////////////////////////////////////////////////////////////////////////////////////
	644	static void lapic_init( boot_info_t * info )
	645	{
	646	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
	647	uint32_t dev_nr; // number of internal devices
	648	uint32_t i; // device index in dev_tbl
	649	xptr_t base; // remote pointer on segment base
	650	uint32_t func; // device functionnal type in boot_info
	651	bool_t found; // LAPIC found
	652
	653	// get number of internal peripherals and base
	654	dev_nr = info->int_dev_nr;
	655	dev_tbl = info->int_dev;
	656
	657	// loop on internal peripherals to get the lapic device
	658	for( i = 0 , found = false ; i < dev_nr ; i++ )
	659	{
	660	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	661
	662	if( func == DEV_FUNC_ICU )
	663	{
	664	base = dev_tbl[i].base;
	665	found = true;
	666	break;
	667	}
	668	}
	669
	670	// if the LAPIC controller is not defined in the boot_info,
	671	// we simply don't initialize the PIC extensions in the kernel,
	672	// making the assumption that the LAPIC related informations
	673	// are hidden in the hardware specific PIC driver.
	674	if( found )
	675	{
	676	// initialise the PIC extensions for
	677	// the core descriptor and core manager extensions
	678	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
	679
	680	// initialize the "lapic_input" structure
	681	// defining how internal IRQs are connected to LAPIC
	682	uint32_t id;
	683	uint8_t valid;
	684	uint8_t channel;
	685	uint32_t func;
	686
	687	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
	688	{
	689	valid = dev_tbl[i].irq[id].valid;
	690	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
	691	channel = dev_tbl[i].irq[id].channel;
	692
	693	if( valid ) // only valid local IRQs are registered
	694	{
	695	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
	696	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
[492]	697	else assert( false , "illegal source device for LAPIC input" );
[188]	698	}
	699	}
	700	}
	701	} // end lapic_init()
	702
	703	///////////////////////////////////////////////////////////////////////////////////////////
[14]	704	// This static function returns the identifiers of the calling core.
	705	///////////////////////////////////////////////////////////////////////////////////////////
	706	// @ info : pointer on boot_info structure.
	707	// @ lid : [out] core local index in cluster.
	708	// @ cxy : [out] cluster identifier.
	709	// @ lid : [out] core global identifier (hardware).
	710	// @ return 0 if success / return EINVAL if not found.
	711	///////////////////////////////////////////////////////////////////////////////////////////
[23]	712	static error_t get_core_identifiers( boot_info_t * info,
	713	lid_t * lid,
[14]	714	cxy_t * cxy,
	715	gid_t * gid )
	716	{
[127]	717	uint32_t i;
[14]	718	gid_t global_id;
[19]	719
[14]	720	// get global identifier from hardware register
[127]	721	global_id = hal_get_gid();
[14]	722
	723	// makes an associative search in boot_info to get (cxy,lid) from global_id
	724	for( i = 0 ; i < info->cores_nr ; i++ )
	725	{
	726	if( global_id == info->core[i].gid )
	727	{
	728	*lid = info->core[i].lid;
	729	*cxy = info->core[i].cxy;
	730	*gid = global_id;
	731	return 0;
	732	}
	733	}
	734	return EINVAL;
[19]	735	}
[14]	736
	737	///////////////////////////////////////////////////////////////////////////////////////////
[1]	738	// This function is the entry point for the kernel initialisation.
[19]	739	// It is executed by all cores in all clusters, but only core[0], called CP0,
[14]	740	// initializes the shared resources such as the cluster manager, or the local peripherals.
[19]	741	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
	742	// only information contained in the local boot_info_t structure, set by the bootloader.
[103]	743	// Only CP0 in cluster 0 print the log messages.
[1]	744	///////////////////////////////////////////////////////////////////////////////////////////
	745	// @ info : pointer on the local boot-info structure.
	746	///////////////////////////////////////////////////////////////////////////////////////////
	747	void kernel_init( boot_info_t * info )
	748	{
[204]	749	lid_t core_lid = -1; // running core local index
	750	cxy_t core_cxy = -1; // running core cluster identifier
	751	gid_t core_gid; // running core hardware identifier
	752	cluster_t * cluster; // pointer on local cluster manager
	753	core_t * core; // pointer on running core descriptor
	754	thread_t * thread; // pointer on idle thread descriptor
	755
	756	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
	757	xptr_t devfs_dev_inode_xp; // extended pointer on DEVFS dev inode
	758	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external inode
	759	xptr_t devfs_internal_inode_xp; // extended pointer on DEVFS internal inode
	760
[1]	761	error_t error;
[285]	762	reg_t status; // running core status register
[1]	763
[188]	764	/////////////////////////////////////////////////////////////////////////////////
	765	// STEP 0 : Each core get its core identifier from boot_info, and makes
	766	// a partial initialisation of its private idle thread descriptor.
	767	// CP0 initializes the "local_cxy" global variable.
	768	// CP0 in cluster IO initializes the TXT0 chdev to print log messages.
	769	/////////////////////////////////////////////////////////////////////////////////
	770
[23]	771	error = get_core_identifiers( info,
[14]	772	&core_lid,
	773	&core_cxy,
	774	&core_gid );
[1]	775
[127]	776	// CP0 initializes cluster identifier
[14]	777	if( core_lid == 0 ) local_cxy = info->cxy;
[1]	778
[127]	779	// each core gets a pointer on its private idle thread descriptor
	780	thread = (thread_t )( idle_threads + (core_lid CONFIG_THREAD_DESC_SIZE) );
[68]	781
[127]	782	// each core registers this thread pointer in hardware register
[68]	783	hal_set_current_thread( thread );
[71]	784
[407]	785	// each core register core descriptor pointer in idle thread descriptor
	786	thread->core = &LOCAL_CLUSTER->core_tbl[core_lid];
	787
[437]	788	// each core initializes the idle thread lists of locks
[124]	789	list_root_init( &thread->locks_root );
[188]	790	xlist_root_init( XPTR( local_cxy , &thread->xlocks_root ) );
[437]	791	thread->local_locks = 0;
	792	thread->remote_locks = 0;
[124]	793
[457]	794	// CP0 in cluster 0 initialises TXT0 chdev descriptor
	795	if( (core_lid == 0) && (core_cxy == 0) ) txt0_device_init( info );
[14]	796
	797	/////////////////////////////////////////////////////////////////////////////////
[457]	798	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[14]	799	(info->x_size * info->y_size) );
	800	barrier_wait( &local_barrier , info->cores_nr );
[437]	801	/////////////////////////////////////////////////////////////////////////////////
[14]	802
[438]	803	#if DEBUG_KERNEL_INIT
	804	if( (core_lid == 0) & (local_cxy == 0) )
[437]	805	printk("\n[DBG] %s : exit barrier 0 : TXT0 initialized / cycle %d\n",
	806	__FUNCTION__, (uint32_t)hal_get_cycles() );
	807	#endif
[14]	808
[188]	809	/////////////////////////////////////////////////////////////////////////////
[407]	810	// STEP 1 : all cores check core identifier.
[188]	811	// CP0 initializes the local cluster manager.
	812	// This includes the memory allocators.
	813	/////////////////////////////////////////////////////////////////////////////
	814
	815	// all cores check identifiers
[14]	816	if( error )
[1]	817	{
[492]	818	assert( false ,
[428]	819	"illegal core identifiers gid = %x / cxy = %x / lid = %d",
	820	core_lid , core_cxy , core_lid );
[1]	821	}
	822
[188]	823	// CP0 initializes cluster manager
[14]	824	if( core_lid == 0 )
[1]	825	{
	826	error = cluster_init( info );
	827
[14]	828	if( error )
	829	{
[492]	830	assert( false ,
[428]	831	"cannot initialise cluster %x", local_cxy );
[14]	832	}
	833	}
[5]	834
[14]	835	/////////////////////////////////////////////////////////////////////////////////
[457]	836	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[14]	837	(info->x_size * info->y_size) );
	838	barrier_wait( &local_barrier , info->cores_nr );
	839	/////////////////////////////////////////////////////////////////////////////////
[1]	840
[438]	841	#if DEBUG_KERNEL_INIT
	842	if( (core_lid == 0) & (local_cxy == 0) )
[437]	843	printk("\n[DBG] %s : exit barrier 1 : clusters initialised / cycle %d\n",
	844	__FUNCTION__, (uint32_t)hal_get_cycles() );
	845	#endif
[1]	846
[188]	847	/////////////////////////////////////////////////////////////////////////////////
[407]	848	// STEP 2 : CP0 initializes the process_zero descriptor.
[296]	849	// CP0 in cluster 0 initializes the IOPIC device.
[188]	850	/////////////////////////////////////////////////////////////////////////////////
	851
	852	// all cores get pointer on local cluster manager & core descriptor
[14]	853	cluster = &cluster_manager;
[127]	854	core = &cluster->core_tbl[core_lid];
[1]	855
[188]	856	// all CP0s initialize the process_zero descriptor
[428]	857	if( core_lid == 0 ) process_zero_create( &process_zero );
[5]	858
[188]	859	// CP0 in cluster 0 initializes the PIC chdev,
	860	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
	861
	862	////////////////////////////////////////////////////////////////////////////////
[457]	863	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	864	(info->x_size * info->y_size) );
	865	barrier_wait( &local_barrier , info->cores_nr );
	866	////////////////////////////////////////////////////////////////////////////////
[127]	867
[438]	868	#if DEBUG_KERNEL_INIT
	869	if( (core_lid == 0) & (local_cxy == 0) )
[437]	870	printk("\n[DBG] %s : exit barrier 2 : PIC initialised / cycle %d\n",
	871	__FUNCTION__, (uint32_t)hal_get_cycles() );
	872	#endif
[1]	873
[188]	874	////////////////////////////////////////////////////////////////////////////////
[407]	875	// STEP 3 : CP0 initializes the distibuted LAPIC descriptor.
	876	// CP0 initializes the internal chdev descriptors
	877	// CP0 initialize the local external chdev descriptors
[188]	878	////////////////////////////////////////////////////////////////////////////////
[5]	879
[279]	880	// all CP0s initialize their local LAPIC extension,
	881	if( core_lid == 0 ) lapic_init( info );
	882
[188]	883	// CP0 scan the internal (private) peripherals,
	884	// and allocates memory for the corresponding chdev descriptors.
	885	if( core_lid == 0 ) internal_devices_init( info );
	886
[1]	887
[50]	888	// All CP0s contribute to initialise external peripheral chdev descriptors.
[14]	889	// Each CP0[cxy] scan the set of external (shared) peripherals (but the TXT0),
	890	// and allocates memory for the chdev descriptors that must be placed
[127]	891	// on the (cxy) cluster according to the global index value.
[188]	892
[14]	893	if( core_lid == 0 ) external_devices_init( info );
[1]	894
[14]	895	/////////////////////////////////////////////////////////////////////////////////
[457]	896	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[14]	897	(info->x_size * info->y_size) );
	898	barrier_wait( &local_barrier , info->cores_nr );
	899	/////////////////////////////////////////////////////////////////////////////////
[5]	900
[438]	901	#if DEBUG_KERNEL_INIT
	902	if( (core_lid == 0) & (local_cxy == 0) )
[437]	903	printk("\n[DBG] %s : exit barrier 3 : all chdev initialised / cycle %d\n",
	904	__FUNCTION__, (uint32_t)hal_get_cycles() );
	905	#endif
[1]	906
[438]	907	#if( DEBUG_KERNEL_INIT & 1 )
[443]	908	if( (core_lid == 0) & (local_cxy == 0) )
[437]	909	chdev_dir_display();
	910	#endif
	911
[188]	912	/////////////////////////////////////////////////////////////////////////////////
[279]	913	// STEP 4 : All cores enable IPI (Inter Procesor Interrupt),
	914	// Alh cores initialize IDLE thread.
[188]	915	// Only CP0 in cluster 0 creates the VFS root inode.
	916	// It access the boot device to initialize the file system context.
	917	/////////////////////////////////////////////////////////////////////////////////
	918
[279]	919	// All cores enable the shared IPI channel
	920	dev_pic_enable_ipi();
	921	hal_enable_irq( &status );
	922
[296]	923	// all cores initialize the idle thread descriptor
[457]	924	thread_idle_init( thread,
	925	THREAD_IDLE,
	926	&thread_idle_func,
	927	NULL,
	928	core_lid );
[1]	929
[296]	930	// all cores unblock idle thread, and register it in scheduler
	931	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
[103]	932	core->scheduler.idle = thread;
[1]	933
[438]	934	#if( DEBUG_KERNEL_INIT & 1 )
[407]	935	sched_display( core_lid );
[389]	936	#endif
[14]	937
[188]	938	// CPO in cluster 0 creates the VFS root
	939	if( (core_lid == 0) && (local_cxy == 0 ) )
[14]	940	{
[188]	941	vfs_root_inode_xp = XPTR_NULL;
[23]	942
[188]	943	// File System must be FATFS in this implementation,
	944	// but other File System can be introduced here
[23]	945	if( CONFIG_VFS_ROOT_IS_FATFS )
	946	{
[389]	947	// 1. allocate memory for FATFS context in cluster 0
[188]	948	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	949
[492]	950	assert( (fatfs_ctx != NULL) ,
[279]	951	"cannot create FATFS context in cluster 0\n" );
[188]	952
	953	// 2. access boot device to initialize FATFS context
	954	fatfs_ctx_init( fatfs_ctx );
	955
	956	// 3. get various informations from FATFS context
	957	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
	958	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
	959	fatfs_ctx->sectors_per_cluster;
	960	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
	961
	962	// 4. create VFS root inode in cluster 0
	963	error = vfs_inode_create( XPTR_NULL, // dentry_xp
	964	FS_TYPE_FATFS, // fs_type
	965	INODE_TYPE_DIR, // inode_type
	966	(void *)(intptr_t)root_dir_cluster, // extend
	967	0, // attr
	968	0, // rights
	969	0, // uid
	970	0, // gid
	971	&vfs_root_inode_xp ); // return
	972
[492]	973	assert( (error == 0) ,
[279]	974	"cannot create VFS root inode\n" );
[188]	975
	976	// 5. initialize VFS context for FAT in cluster 0
	977	vfs_ctx_init( FS_TYPE_FATFS, // file system type
	978	0, // attributes
	979	total_clusters,
	980	cluster_size,
	981	vfs_root_inode_xp, // VFS root
	982	fatfs_ctx ); // extend
[389]	983
	984	// 6. check initialisation
	985	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	986	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
[492]	987	"illegal value for FATFS context in cluster %x\n", local_cxy );
[23]	988	}
	989	else
	990	{
[492]	991	assert( false ,
[428]	992	"root FS must be FATFS" );
[23]	993	}
	994
[389]	995	// register VFS root inode in process_zero descriptor of cluster 0
[188]	996	process_zero.vfs_root_xp = vfs_root_inode_xp;
	997	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
	998	}
	999
	1000	/////////////////////////////////////////////////////////////////////////////////
[457]	1001	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1002	(info->x_size * info->y_size) );
	1003	barrier_wait( &local_barrier , info->cores_nr );
	1004	/////////////////////////////////////////////////////////////////////////////////
	1005
[438]	1006	#if DEBUG_KERNEL_INIT
	1007	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1008	printk("\n[DBG] %s : exit barrier 4 : VFS_root = %l in cluster 0 / cycle %d\n",
	1009	__FUNCTION__, vfs_root_inode_xp , (uint32_t)hal_get_cycles());
	1010	#endif
[188]	1011
	1012	/////////////////////////////////////////////////////////////////////////////////
	1013	// STEP 5 : Other CP0s allocate memory for the selected FS context,
	1014	// and initialise both the local FS context and the local VFS context
	1015	// from values stored in cluster 0.
	1016	// They get the VFS root inode extended pointer from cluster 0.
	1017	/////////////////////////////////////////////////////////////////////////////////
	1018
	1019	if( (core_lid == 0) && (local_cxy != 0) )
	1020	{
	1021	// File System must be FATFS in this implementation,
	1022	// but other File System can be introduced here
	1023	if( CONFIG_VFS_ROOT_IS_FATFS )
[23]	1024	{
[389]	1025	// 1. allocate memory for local FATFS context
	1026	fatfs_ctx_t * local_fatfs_ctx = fatfs_ctx_alloc();
[188]	1027
[492]	1028	assert( (local_fatfs_ctx != NULL) ,
[389]	1029	"cannot create FATFS context in cluster %x\n", local_cxy );
[188]	1030
[389]	1031	// 2. get local pointer on VFS context for FATFS
[188]	1032	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	1033
[389]	1034	// 3. get local pointer on FATFS context in cluster 0
	1035	fatfs_ctx_t * remote_fatfs_ctx = hal_remote_lpt( XPTR( 0 , &vfs_ctx->extend ) );
	1036
	1037	// 4. copy FATFS context from cluster 0 to local cluster
	1038	hal_remote_memcpy( XPTR( local_cxy , local_fatfs_ctx ),
	1039	XPTR( 0 , remote_fatfs_ctx ), sizeof(fatfs_ctx_t) );
	1040
	1041	// 5. copy VFS context from cluster 0 to local cluster
[188]	1042	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
[389]	1043	XPTR( 0 , vfs_ctx ), sizeof(vfs_ctx_t) );
[188]	1044
[389]	1045	// 6. update extend field in local copy of VFS context
	1046	vfs_ctx->extend = local_fatfs_ctx;
[188]	1047
[389]	1048	// 7. check initialisation
	1049	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
[492]	1050	"illegal value for FATFS context in cluster %x\n", local_cxy );
[23]	1051	}
	1052
[188]	1053	// get extended pointer on VFS root inode from cluster 0
[296]	1054	vfs_root_inode_xp = hal_remote_lwd( XPTR( 0 , &process_zero.vfs_root_xp ) );
[101]	1055
[188]	1056	// update local process_zero descriptor
	1057	process_zero.vfs_root_xp = vfs_root_inode_xp;
	1058	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
[14]	1059	}
	1060
[188]	1061	/////////////////////////////////////////////////////////////////////////////////
[457]	1062	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1063	(info->x_size * info->y_size) );
	1064	barrier_wait( &local_barrier , info->cores_nr );
[204]	1065	/////////////////////////////////////////////////////////////////////////////////
[101]	1066
[438]	1067	#if DEBUG_KERNEL_INIT
	1068	if( (core_lid == 0) & (local_cxy == 0) )
[457]	1069	printk("\n[DBG] %s : exit barrier 5 : VFS_root = %l in cluster 0 / cycle %d\n",
	1070	__FUNCTION__, vfs_root_inode_xp , (uint32_t)hal_get_cycles());
[437]	1071	#endif
[188]	1072
	1073	/////////////////////////////////////////////////////////////////////////////////
	1074	// STEP 6 : CP0 in cluster IO makes the global DEVFS tree initialisation:
[204]	1075	// It creates the DEVFS directory "dev", and the DEVFS "external"
	1076	// directory in cluster IO and mount these inodes into VFS.
[188]	1077	/////////////////////////////////////////////////////////////////////////////////
	1078
[457]	1079	if( (core_lid == 0) && (local_cxy == 0) )
[1]	1080	{
[188]	1081	// create "dev" and "external" directories.
	1082	devfs_global_init( process_zero.vfs_root_xp,
[204]	1083	&devfs_dev_inode_xp,
[188]	1084	&devfs_external_inode_xp );
	1085
	1086	// creates the DEVFS context in cluster IO
	1087	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
	1088
[492]	1089	assert( (devfs_ctx != NULL) ,
[279]	1090	"cannot create DEVFS context in cluster IO\n");
[188]	1091
	1092	// register DEVFS root and external directories
[204]	1093	devfs_ctx_init( devfs_ctx, devfs_dev_inode_xp, devfs_external_inode_xp );
[188]	1094	}
	1095
	1096	/////////////////////////////////////////////////////////////////////////////////
[457]	1097	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1098	(info->x_size * info->y_size) );
	1099	barrier_wait( &local_barrier , info->cores_nr );
[204]	1100	/////////////////////////////////////////////////////////////////////////////////
[188]	1101
[438]	1102	#if DEBUG_KERNEL_INIT
	1103	if( (core_lid == 0) & (local_cxy == 0) )
[457]	1104	printk("\n[DBG] %s : exit barrier 6 : dev_root = %l in cluster 0 / cycle %d\n",
	1105	__FUNCTION__, devfs_dev_inode_xp , (uint32_t)hal_get_cycles() );
[437]	1106	#endif
[188]	1107
	1108	/////////////////////////////////////////////////////////////////////////////////
	1109	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
	1110	// Each CP0 get the "dev" and "external" extended pointers from
[204]	1111	// values stored in cluster IO.
[337]	1112	// Then each CP0 in cluster(i) creates the DEVFS "internal directory,
[204]	1113	// and creates the pseudo-files for all chdevs in cluster (i).
[188]	1114	/////////////////////////////////////////////////////////////////////////////////
	1115
	1116	if( core_lid == 0 )
	1117	{
[457]	1118	// get extended pointer on "extend" field of VFS context for DEVFS in cluster 0
	1119	xptr_t extend_xp = XPTR( 0 , &fs_context[FS_TYPE_DEVFS].extend );
[188]	1120
[457]	1121	// get pointer on DEVFS context in cluster 0
[188]	1122	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
	1123
[457]	1124	devfs_dev_inode_xp = hal_remote_lwd( XPTR( 0 , &devfs_ctx->dev_inode_xp ) );
	1125	devfs_external_inode_xp = hal_remote_lwd( XPTR( 0 , &devfs_ctx->external_inode_xp ) );
[188]	1126
[204]	1127	// populate DEVFS in all clusters
	1128	devfs_local_init( devfs_dev_inode_xp,
	1129	devfs_external_inode_xp,
	1130	&devfs_internal_inode_xp );
[188]	1131	}
	1132
	1133	/////////////////////////////////////////////////////////////////////////////////
[457]	1134	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1135	(info->x_size * info->y_size) );
	1136	barrier_wait( &local_barrier , info->cores_nr );
[204]	1137	/////////////////////////////////////////////////////////////////////////////////
[188]	1138
[438]	1139	#if DEBUG_KERNEL_INIT
	1140	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1141	printk("\n[DBG] %s : exit barrier 7 : dev_root = %l in cluster 0 / cycle %d\n",
	1142	__FUNCTION__, devfs_dev_inode_xp , (uint32_t)hal_get_cycles() );
	1143	#endif
[188]	1144
	1145	/////////////////////////////////////////////////////////////////////////////////
[428]	1146	// STEP 8 : CP0 in cluster 0 creates the first user process (process_init)
[188]	1147	/////////////////////////////////////////////////////////////////////////////////
	1148
[457]	1149	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1150	{
[428]	1151
[438]	1152	#if( DEBUG_KERNEL_INIT & 1 )
[428]	1153	vfs_display( vfs_root_inode_xp );
	1154	#endif
	1155
	1156	process_init_create();
[188]	1157	}
[101]	1158
[188]	1159	/////////////////////////////////////////////////////////////////////////////////
[457]	1160	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1161	(info->x_size * info->y_size) );
	1162	barrier_wait( &local_barrier , info->cores_nr );
[204]	1163	/////////////////////////////////////////////////////////////////////////////////
[188]	1164
[438]	1165	#if DEBUG_KERNEL_INIT
	1166	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1167	printk("\n[DBG] %s : exit barrier 8 : process init created / cycle %d\n",
	1168	__FUNCTION__ , (uint32_t)hal_get_cycles() );
	1169	#endif
[188]	1170
[443]	1171	#if (DEBUG_KERNEL_INIT & 1)
	1172	if( (core_lid == 0) & (local_cxy == 0) )
	1173	sched_display( 0 );
	1174	#endif
	1175
[188]	1176	/////////////////////////////////////////////////////////////////////////////////
	1177	// STEP 9 : CP0 in cluster 0 print banner
	1178	/////////////////////////////////////////////////////////////////////////////////
	1179
[457]	1180	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1181	{
[5]	1182	print_banner( (info->x_size * info->y_size) , info->cores_nr );
[68]	1183
[438]	1184	#if( DEBUG_KERNEL_INIT & 1 )
[437]	1185	printk("\n\n***** memory fooprint for main kernel objects\n\n"
[68]	1186	" - thread descriptor : %d bytes\n"
	1187	" - process descriptor : %d bytes\n"
	1188	" - cluster manager : %d bytes\n"
	1189	" - chdev descriptor : %d bytes\n"
	1190	" - core descriptor : %d bytes\n"
	1191	" - scheduler : %d bytes\n"
	1192	" - rpc fifo : %d bytes\n"
	1193	" - page descriptor : %d bytes\n"
	1194	" - mapper root : %d bytes\n"
	1195	" - ppm manager : %d bytes\n"
	1196	" - kcm manager : %d bytes\n"
	1197	" - khm manager : %d bytes\n"
	1198	" - vmm manager : %d bytes\n"
	1199	" - gpt root : %d bytes\n"
	1200	" - list item : %d bytes\n"
	1201	" - xlist item : %d bytes\n"
	1202	" - spinlock : %d bytes\n"
	1203	" - remote spinlock : %d bytes\n"
	1204	" - rwlock : %d bytes\n"
	1205	" - remote rwlock : %d bytes\n",
[127]	1206	sizeof( thread_t ),
[68]	1207	sizeof( process_t ),
	1208	sizeof( cluster_t ),
	1209	sizeof( chdev_t ),
	1210	sizeof( core_t ),
	1211	sizeof( scheduler_t ),
[407]	1212	sizeof( remote_fifo_t ),
[68]	1213	sizeof( page_t ),
	1214	sizeof( mapper_t ),
	1215	sizeof( ppm_t ),
	1216	sizeof( kcm_t ),
	1217	sizeof( khm_t ),
	1218	sizeof( vmm_t ),
	1219	sizeof( gpt_t ),
	1220	sizeof( list_entry_t ),
	1221	sizeof( xlist_entry_t ),
	1222	sizeof( spinlock_t ),
	1223	sizeof( remote_spinlock_t ),
	1224	sizeof( rwlock_t ),
	1225	sizeof( remote_rwlock_t ));
[406]	1226	#endif
	1227
[1]	1228	}
	1229
[398]	1230	// each core activates its private TICK IRQ
	1231	dev_pic_enable_timer( CONFIG_SCHED_TICK_MS_PERIOD );
[14]	1232
[440]	1233	#if DEBUG_KERNEL_INIT
	1234	printk("\n[DBG] %s : thread %x on core[%x,%d] jumps to thread_idle_func() / cycle %d\n",
	1235	__FUNCTION__ , CURRENT_THREAD , local_cxy , core_lid , (uint32_t)hal_get_cycles() );
	1236	#endif
	1237
[407]	1238	// each core jump to thread_idle_func
[50]	1239	thread_idle_func();
[127]	1240	}
[14]	1241

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