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source: trunk/kernel/kern/kernel_init.c @ 197

Last change on this file since 197 was 188, checked in by alain, 7 years ago
Redefine the PIC device API.
File size: 50.2 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>
	27	#include <hal_types.h>
	28	#include <hal_special.h>
	29	#include <hal_context.h>
[14]	30	#include <barrier.h>
[1]	31	#include <remote_barrier.h>
	32	#include <core.h>
	33	#include <list.h>
[68]	34	#include <xlist.h>
[1]	35	#include <thread.h>
	36	#include <scheduler.h>
	37	#include <kmem.h>
	38	#include <cluster.h>
	39	#include <string.h>
	40	#include <memcpy.h>
	41	#include <ppm.h>
	42	#include <page.h>
[5]	43	#include <chdev.h>
[1]	44	#include <boot_info.h>
	45	#include <dqdt.h>
	46	#include <dev_icu.h>
	47	#include <dev_mmc.h>
[5]	48	#include <dev_dma.h>
	49	#include <dev_iob.h>
[1]	50	#include <dev_ioc.h>
[5]	51	#include <dev_txt.h>
[1]	52	#include <dev_pic.h>
	53	#include <printk.h>
	54	#include <vfs.h>
[77]	55	#include <hal_drivers.h>
[23]	56	#include <devfs.h>
[68]	57	#include <mapper.h>
[101]	58	#include <soclib_tty.h>
[1]	59
[5]	60	#define KERNEL_INIT_SYNCHRO 0xA5A5B5B5
[1]	61
	62	///////////////////////////////////////////////////////////////////////////////////////////
	63	// All these global variables are replicated in all clusters.
	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")))
	80	char idle_threads[CONFIG_THREAD_DESC_SIZE *
	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
[188]	87	// This variable defines the TXT0 kernel terminal
	88	__attribute__((section(".kdata")))
	89	chdev_t txt0_chdev CONFIG_CACHE_LINE_ALIGNED;
	90
[14]	91	// This variables define the kernel process0 descriptor
[5]	92	__attribute__((section(".kdata")))
[19]	93	process_t process_zero CONFIG_CACHE_LINE_ALIGNED;
[1]	94
[14]	95	// This variable defines extended pointers on the distributed chdevs
[5]	96	__attribute__((section(".kdata")))
[14]	97	chdev_directory_t chdev_dir CONFIG_CACHE_LINE_ALIGNED;
[1]	98
[188]	99	// This variable contains the input IRQ indexes for the IOPIC controller
[5]	100	__attribute__((section(".kdata")))
[188]	101	iopic_input_t iopic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	102
[188]	103	// This variable contains the input IRQ indexes for the LAPIC controller
[5]	104	__attribute__((section(".kdata")))
[188]	105	lapic_input_t lapic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	106
[14]	107	// This variable defines the local cluster identifier
[5]	108	__attribute__((section(".kdata")))
[14]	109	cxy_t local_cxy CONFIG_CACHE_LINE_ALIGNED;
[5]	110
[127]	111	// This variable is used for CP0 cores synchronisation in kernel_init()
[5]	112	__attribute__((section(".kdata")))
[14]	113	remote_barrier_t global_barrier CONFIG_CACHE_LINE_ALIGNED;
[1]	114
[127]	115	// This variable is used for local cores synchronisation in kernel_init()
[14]	116	__attribute__((section(".kdata")))
	117	barrier_t local_barrier CONFIG_CACHE_LINE_ALIGNED;
	118
[127]	119	// This variable defines the array of supported File System contexts
[50]	120	__attribute__((section(".kdata")))
	121	vfs_ctx_t fs_context[FS_TYPES_NR] CONFIG_CACHE_LINE_ALIGNED;
	122
	123
[1]	124	///////////////////////////////////////////////////////////////////////////////////////////
[5]	125	// This function displays the ALMOS_MKH banner.
[1]	126	///////////////////////////////////////////////////////////////////////////////////////////
[5]	127	static void print_banner( uint32_t nclusters , uint32_t ncores )
[127]	128	{
[5]	129	printk("\n"
	130	" _ __ __ _____ ______ __ __ _ __ _ _ \n"
	131	" /\\ \| \| \| \\ / \| / ___ \\ / _____\| \| \\ / \| \| \| / / \| \| \| \| \n"
	132	" / \\ \| \| \| \\/ \| \| / \\ \| \| / \| \\/ \| \| \|/ / \| \| \| \| \n"
	133	" / /\\ \\ \| \| \| \|\\ /\| \| \| \| \| \| \| \|_____ ___ \| \|\\ /\| \| \| / \| \|___\| \| \n"
	134	" / /__\\ \\ \| \| \| \| \\/ \| \| \| \| \| \| \\_____ \\ \|___\| \| \| \\/ \| \| \| \\ \| ___ \| \n"
	135	" / ______ \\ \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|\\ \\ \| \| \| \| \n"
	136	" / / \\ \\ \| \|____ \| \| \| \| \| \\___/ \| _____/ \| \| \| \| \| \| \| \\ \\ \| \| \| \| \n"
	137	" /_/ \\_\\ \|______\| \|_\| \|_\| \\_____/ \|______/ \|_\| \|_\| \|_\| \\_\\ \|_\| \|_\| \n"
	138	"\n\n\t\t Advanced Locality Management Operating System / Multi Kernel Hybrid\n"
[127]	139	"\n\n\t\t\t Version 0.0 : %d clusters / %d cores per cluster\n\n", nclusters , ncores );
[5]	140	}
[1]	141
	142
[5]	143	///////////////////////////////////////////////////////////////////////////////////////////
[188]	144	// This function initializes the TXT0 chdev descriptor, that is the "kernel terminal",
	145	// shared by all kernel instances for debug messages.
	146	// It is a global variable (replicated in all clusters), because this terminal is used
	147	// before the kmem allocator initialisation, but only the instance in cluster containing
	148	// the calling core is registered in the "chdev_dir" directory.
[127]	149	// As this TXT0 chdev supports only the TXT_SYNC_WRITE command, we don't create
	150	// a server thread, we don't allocate a WTI, and we don't initialize the waiting queue.
[5]	151	///////////////////////////////////////////////////////////////////////////////////////////
	152	// @ info : pointer on the local boot-info structure.
	153	///////////////////////////////////////////////////////////////////////////////////////////
	154	static void txt0_device_init( boot_info_t * info )
	155	{
	156	boot_device_t * dev_tbl; // pointer on array of devices in boot_info
[127]	157	uint32_t dev_nr; // actual number of devices in this cluster
	158	xptr_t base; // remote pointer on segment base
	159	uint32_t func; // device functional index
[5]	160	uint32_t impl; // device implementation index
[127]	161	uint32_t i; // device index in dev_tbl
	162	uint32_t x; // X cluster coordinate
	163	uint32_t y; // Y cluster coordinate
[188]	164	uint32_t channels; // number of channels
[1]	165
[5]	166	// get number of peripherals and base of devices array from boot_info
[127]	167	dev_nr = info->ext_dev_nr;
[5]	168	dev_tbl = info->ext_dev;
[1]	169
[14]	170	// loop on external peripherals to find TXT device
[127]	171	for( i = 0 ; i < dev_nr ; i++ )
	172	{
[5]	173	base = dev_tbl[i].base;
[188]	174	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	175	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	176	channels = dev_tbl[i].channels;
[5]	177
[127]	178	if (func == DEV_FUNC_TXT )
[5]	179	{
[188]	180	assert( (channels > 0) , __FUNCTION__ ,
	181	"numner of TXT channels cannot be 0\n");
[5]	182
[188]	183	// initializes TXT0 basic fields
	184	txt0_chdev.func = func;
	185	txt0_chdev.impl = impl;
	186	txt0_chdev.channel = 0;
	187	txt0_chdev.base = base;
	188	txt0_chdev.is_rx = false;
	189
	190	// initializes lock
[14]	191	remote_spinlock_init( XPTR( local_cxy , &txt0_chdev.wait_lock ) );
[188]	192
	193	// TXT specific initialisation:
	194	// no server thread & no IRQ routing for channel 0
	195	dev_txt_init( &txt0_chdev );
[14]	196
[188]	197	// register the TXT0 in all chdev_dir[x][y] structures
[5]	198	for( x = 0 ; x < info->x_size ; x++ )
	199	{
	200	for( y = 0 ; y < info->y_size ; y++ )
	201	{
	202	cxy_t cxy = (x<<info->y_width) + y;
[19]	203	hal_remote_swd( XPTR( cxy , &chdev_dir.txt[0] ) ,
[14]	204	XPTR( local_cxy , &txt0_chdev ) );
[5]	205	}
	206	}
	207
[188]	208	kinit_dmsg("\n[INFO] %s created TXT0 chdev in cluster %x at cycle %d\n",
	209	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
[5]	210	}
[188]	211	} // end loop on devices
	212	} // end txt0_device_init()
[5]	213
[1]	214	///////////////////////////////////////////////////////////////////////////////////////////
[188]	215	// This function allocates memory and initializes the chdev descriptors for the internal
	216	// peripherals contained in the local cluster, other than the LAPIC, as specified by
	217	// the boot_info, including the linking with the driver for the specified implementation.
	218	// The relevant entries in all copies of the devices directory are initialised.
[1]	219	///////////////////////////////////////////////////////////////////////////////////////////
	220	// @ info : pointer on the local boot-info structure.
	221	///////////////////////////////////////////////////////////////////////////////////////////
[5]	222	static void internal_devices_init( boot_info_t * info )
[1]	223	{
[188]	224	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
	225	uint32_t dev_nr; // actual number of devices in this cluster
	226	xptr_t base; // remote pointer on segment base
	227	uint32_t func; // device functionnal index
	228	uint32_t impl; // device implementation index
	229	uint32_t i; // device index in dev_tbl
	230	uint32_t x; // X cluster coordinate
	231	uint32_t y; // Y cluster coordinate
	232	uint32_t channels; // number of channels
	233	uint32_t channel; // channel index
	234	chdev_t * chdev_ptr; // local pointer on created chdev
[1]	235
[188]	236	// get number of internal peripherals and base from boot_info
	237	dev_nr = info->int_dev_nr;
	238	dev_tbl = info->int_dev;
[1]	239
[188]	240	// loop on internal peripherals
	241	for( i = 0 ; i < dev_nr ; i++ )
	242	{
	243	base = dev_tbl[i].base;
	244	channels = dev_tbl[i].channels;
	245	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	246	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	247
[188]	248	//////////////////////////
	249	if( func == DEV_FUNC_MMC )
[5]	250	{
[188]	251	assert( (channels == 1) , __FUNCTION__ ,
	252	"MMC device must be single channel\n" );
[1]	253
[188]	254	// create chdev in local cluster
	255	chdev_ptr = chdev_create( func,
	256	impl,
	257	0, // channel
	258	false, // direction
	259	base );
[14]	260
[188]	261	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	262	"cannot allocate memory for MMC chdev\n" );
	263
	264	// make MMC specific initialisation
	265	dev_mmc_init( chdev_ptr );
[1]	266
[188]	267	// set the MMC field in all chdev_dir[x][y] structures
	268	for( x = 0 ; x < info->x_size ; x++ )
[1]	269	{
[188]	270	for( y = 0 ; y < info->y_size ; y++ )
	271	{
	272	cxy_t cxy = (x<<info->y_width) + y;
	273	hal_remote_swd( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
	274	XPTR( local_cxy , chdev_ptr ) );
	275	}
[1]	276	}
[188]	277
	278	if( local_cxy == 0 )
	279	kinit_dmsg("\n[INFO] %s created MMC chdev in cluster 0 at cycle %d\n",
	280	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
[14]	281	}
[188]	282	///////////////////////////////
	283	else if( func == DEV_FUNC_DMA )
[127]	284	{
[188]	285	// create one chdev per channel in local cluster
	286	for( channel = 0 ; channel < channels ; channel++ )
	287	{
	288	// create chdev[channel] in local cluster
	289	chdev_ptr = chdev_create( func,
	290	impl,
	291	channel,
	292	false, // direction
	293	base );
[5]	294
[188]	295	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	296	"cannot allocate memory for DMA chdev" );
	297
	298	// make DMA specific initialisation
	299	dev_dma_init( chdev_ptr );
[127]	300
[188]	301	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
	302	// structure because the DMA device is not remotely accessible.
	303	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
[5]	304
[188]	305	kinit_dmsg("\n[INFO] %s created DMA[%d] chdev in cluster 0 at cycle %d\n",
	306	__FUNCTION__ , channel , (uint32_t)hal_time_stamp() );
	307	}
[14]	308	}
[127]	309	}
[5]	310	} // end internal_devices_init()
	311
	312	///////////////////////////////////////////////////////////////////////////////////////////
[188]	313	// This function allocates memory and initializes the chdev descriptors for the
	314	// external (shared) peripherals other than the IOPIC, as specified by the boot_info,
[5]	315	// including the dynamic linking with the driver for the specified implementation.
[188]	316	// These chdev descriptors are distributed on all clusters, using a modulo on a global
	317	// index, identically computed in all clusters: In each cluster, the local CP0 core
	318	// computes the global index for all external chdevs, and creates only the chdevs that
	319	// must be placed in the local cluster.
	320	// The relevant entries in all copies of the devices directory are initialised.
[5]	321	///////////////////////////////////////////////////////////////////////////////////////////
	322	// @ info : pointer on the local boot-info structure.
	323	///////////////////////////////////////////////////////////////////////////////////////////
	324	static void external_devices_init( boot_info_t * info )
	325	{
[188]	326	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
	327	uint32_t dev_nr; // actual number of external devices
	328	xptr_t base; // remote pointer on segment base
[5]	329	uint32_t func; // device functionnal index
	330	uint32_t impl; // device implementation index
[188]	331	uint32_t i; // device index in dev_tbl
	332	uint32_t x; // X cluster coordinate
	333	uint32_t y; // Y cluster coordinate
	334	uint32_t channels; // number of channels
	335	uint32_t channel; // channel index
	336	uint32_t directions; // number of directions (1 or 2)
	337	uint32_t rx; // direction index (0 or 1)
	338	uint32_t first_channel; // used in loop on channels for TXT
[127]	339	chdev_t * chdev; // local pointer on one channel_device descriptor
[188]	340	uint32_t ext_chdev_gid; // global index of external chdev
[5]	341
	342	// get number of peripherals and base of devices array from boot_info
[127]	343	dev_nr = info->ext_dev_nr;
[5]	344	dev_tbl = info->ext_dev;
	345
[188]	346	// initializes global index (PIC is already placed in cluster 0
	347	ext_chdev_gid = 1;
	348
[5]	349	// loop on external peripherals
[127]	350	for( i = 0 ; i < dev_nr ; i++ )
	351	{
[188]	352	base = dev_tbl[i].base;
	353	channels = dev_tbl[i].channels;
	354	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	355	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	356
	357	// There is one chdev per direction for NIC
[188]	358	if (func == DEV_FUNC_NIC) directions = 2;
	359	else directions = 1;
[5]	360
	361	// The TXT0 chdev has already been created
	362	if (func == DEV_FUNC_TXT) first_channel = 1;
	363	else first_channel = 0;
	364
[188]	365	// do nothing for RO, that does not require a device descriptor.
[5]	366	if( func == DEV_FUNC_ROM ) continue;
	367
[188]	368	// do nothing for PIC, that is already initialized
	369	if( func == DEV_FUNC_PIC ) continue;
[5]	370
[188]	371	// check PIC device initialized
	372	assert( (chdev_dir.pic != XPTR_NULL ) , __FUNCTION__ ,
	373	"PIC device must be initialized before other devices\n" );
	374
	375	// check external device functionnal type
	376	assert( ( (func == DEV_FUNC_IOB) \|\|
	377	(func == DEV_FUNC_IOC) \|\|
	378	(func == DEV_FUNC_TXT) \|\|
	379	(func == DEV_FUNC_NIC) \|\|
	380	(func == DEV_FUNC_FBF) ) , __FUNCTION__ ,
	381	"undefined external peripheral type\n" );
	382
[127]	383	// loops on channels
[188]	384	for( channel = first_channel ; channel < channels ; channel++ )
[127]	385	{
[5]	386	// loop on directions
[188]	387	for( rx = 0 ; rx < directions ; rx++ )
[1]	388	{
[188]	389	// compute target cluster for chdev[func,channel,direction]
	390	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
[5]	391	uint32_t cx = offset / info->y_size;
	392	uint32_t cy = offset % info->y_size;
	393	uint32_t target_cxy = (cx<<info->y_width) + cy;
[1]	394
[5]	395	// allocate and initialize a local chdev
	396	// if local cluster matches target cluster
	397	if( target_cxy == local_cxy )
[1]	398	{
[5]	399	chdev = chdev_create( func,
	400	impl,
	401	channel,
[188]	402	rx, // direction
[5]	403	base );
	404
[127]	405	assert( (chdev != NULL), __FUNCTION__ ,
[5]	406	"cannot allocate external device" );
	407
	408	// make device type specific initialisation
	409	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
	410	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
	411	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
	412	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
[188]	413	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
[5]	414
[127]	415	// all external (shared) devices are remotely accessible
[5]	416	// initialize the replicated chdev_dir[x][y] structures
[127]	417	// defining the extended pointers on chdev descriptors
	418	xptr_t * entry;
	419
[188]	420	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
	421	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
	422	if(func==DEV_FUNC_TXT ) entry = &chdev_dir.txt[channel];
	423	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
	424	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
	425	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
[127]	426
[1]	427	for( x = 0 ; x < info->x_size ; x++ )
	428	{
	429	for( y = 0 ; y < info->y_size ; y++ )
	430	{
	431	cxy_t cxy = (x<<info->y_width) + y;
[188]	432	hal_remote_swd( XPTR( cxy , entry ),
	433	XPTR( local_cxy , chdev ) );
[5]	434	}
[1]	435	}
	436
[188]	437	kinit_dmsg("\n[INFO] %s create chdev %s[%d] in cluster %x at cycle %d\n",
	438	__FUNCTION__ , chdev_func_str( func ), channel,
	439	local_cxy , (uint32_t)hal_time_stamp() );
[5]	440
	441	} // end if match
	442
[19]	443	// increment chdev global index (matching or not)
[188]	444	ext_chdev_gid++;
[5]	445
	446	} // end loop on directions
	447	} // end loop on channels
[188]	448	} // end loop on devices
	449	} // end external_devices_init()
[5]	450
[188]	451	///////////////////////////////////////////////////////////////////////////////////////////
	452	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
	453	// device, namely the informations attached to the external IOPIC controller.
	454	// This initialisation must be done before other devices initialisation because the IRQ
	455	// routing infrastructure is required for internal and external devices initialisation.
	456	///////////////////////////////////////////////////////////////////////////////////////////
	457	// @ info : pointer on the local boot-info structure.
	458	///////////////////////////////////////////////////////////////////////////////////////////
	459	static void iopic_init( boot_info_t * info )
	460	{
	461	boot_device_t * dev_tbl; // pointer on boot_info external devices array
	462	uint32_t dev_nr; // actual number of external devices
	463	xptr_t base; // remote pointer on segment base
	464	uint32_t func; // device functionnal index
	465	uint32_t impl; // device implementation index
	466	uint32_t i; // device index in dev_tbl
	467	uint32_t x; // cluster X coordinate
	468	uint32_t y; // cluster Y coordinate
	469	bool_t found; // IOPIC found
	470	chdev_t * chdev; // pointer on PIC chdev descriptor
	471
	472	// get number of external peripherals and base of array from boot_info
	473	dev_nr = info->ext_dev_nr;
	474	dev_tbl = info->ext_dev;
	475
	476	// loop on external peripherals to get the IOPIC
	477	for( i = 0 , found = false ; i < dev_nr ; i++ )
	478	{
	479	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	480
[127]	481	if( func == DEV_FUNC_PIC )
[1]	482	{
[188]	483	base = dev_tbl[i].base;
	484	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	485	found = true;
	486	break;
	487	}
	488	}
[5]	489
[188]	490	assert( found , __FUNCTION__ , "PIC device not found\n" );
[1]	491
[188]	492	// allocate and initialize the PIC chdev in local cluster
	493	chdev = chdev_create( func,
	494	impl,
	495	0, // channel
	496	0, // direction,
	497	base );
[5]	498
[188]	499	assert( (chdev != NULL), __FUNCTION__ , "no memory for PIC chdev\n" );
[5]	500
[188]	501	// make PIC device type specific initialisation
	502	dev_pic_init( chdev );
[1]	503
[188]	504	// register extended pointer on PIC chdev in "chdev_dir" array in all clusters
	505	xptr_t * entry = &chdev_dir.pic;
	506
	507	for( x = 0 ; x < info->x_size ; x++ )
	508	{
	509	for( y = 0 ; y < info->y_size ; y++ )
	510	{
	511	cxy_t cxy = (x<<info->y_width) + y;
	512	hal_remote_swd( XPTR( cxy , entry ) ,
	513	XPTR( local_cxy , chdev ) );
	514	}
	515	}
[1]	516
[188]	517	// initialize the "iopic_input" structure
	518	// defining how external IRQs are connected to IOPIC
	519	uint32_t id;
	520	uint8_t valid;
	521	uint32_t type;
	522	uint8_t channel;
	523	uint8_t is_rx;
	524
	525	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
	526	{
	527	valid = dev_tbl[i].irq[id].valid;
	528	type = dev_tbl[i].irq[id].dev_type;
	529	channel = dev_tbl[i].irq[id].channel;
	530	is_rx = dev_tbl[i].irq[id].is_rx;
	531
	532	if( valid ) // only valid inputs are registered
	533	{
	534	uint32_t * index; // local pointer on one entry
	535	uint16_t func = FUNC_FROM_TYPE( type );
	536
	537	if ( func == DEV_FUNC_TXT )
	538	index = &iopic_input.txt[channel];
	539	else if( func == DEV_FUNC_IOC )
	540	index = &iopic_input.ioc[channel];
	541	else if( (func == DEV_FUNC_NIC) && (is_rx == 0) )
	542	index = &iopic_input.nic_tx[channel];
	543	else if( (func == DEV_FUNC_NIC) && (is_rx != 0) )
	544	index = &iopic_input.nic_rx[channel];
	545	else if( func == DEV_FUNC_IOB )
	546	index = &iopic_input.iob;
	547	else
	548	assert( false , __FUNCTION__ , "illegal source device for IOPIC input" );
	549
	550	// set entry in local structure
	551	*index = id;
	552	}
	553	}
	554
	555	kinit_dmsg("\n[INFO] %s created IOPIC chdev in cluster %x at cycle %d\n",
	556	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
	557
	558	} // end iopic_init()
	559
[1]	560	///////////////////////////////////////////////////////////////////////////////////////////
[188]	561	// This function is called by all CP0s in all cluster to complete the PIC device
	562	// initialisation, namely the informations attached to the LAPIC controller.
	563	// This initialisation must be done after the IOPIC initialisation, but before other
	564	// devices initialisation because the IRQ routing infrastructure is required for both
	565	// internal and external devices initialisation.
	566	///////////////////////////////////////////////////////////////////////////////////////////
	567	// @ info : pointer on the local boot-info structure.
	568	///////////////////////////////////////////////////////////////////////////////////////////
	569	static void lapic_init( boot_info_t * info )
	570	{
	571	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
	572	uint32_t dev_nr; // number of internal devices
	573	uint32_t i; // device index in dev_tbl
	574	xptr_t base; // remote pointer on segment base
	575	uint32_t func; // device functionnal type in boot_info
	576	bool_t found; // LAPIC found
	577
	578	// get number of internal peripherals and base
	579	dev_nr = info->int_dev_nr;
	580	dev_tbl = info->int_dev;
	581
	582	// loop on internal peripherals to get the lapic device
	583	for( i = 0 , found = false ; i < dev_nr ; i++ )
	584	{
	585	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	586
	587	if( func == DEV_FUNC_ICU )
	588	{
	589	base = dev_tbl[i].base;
	590	found = true;
	591	break;
	592	}
	593	}
	594
	595	// if the LAPIC controller is not defined in the boot_info,
	596	// we simply don't initialize the PIC extensions in the kernel,
	597	// making the assumption that the LAPIC related informations
	598	// are hidden in the hardware specific PIC driver.
	599	if( found )
	600	{
	601	// initialise the PIC extensions for
	602	// the core descriptor and core manager extensions
	603	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
	604
	605	// initialize the "lapic_input" structure
	606	// defining how internal IRQs are connected to LAPIC
	607	uint32_t id;
	608	uint8_t valid;
	609	uint8_t channel;
	610	uint32_t func;
	611
	612	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
	613	{
	614	valid = dev_tbl[i].irq[id].valid;
	615	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
	616	channel = dev_tbl[i].irq[id].channel;
	617
	618	if( valid ) // only valid local IRQs are registered
	619	{
	620	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
	621	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
	622	else assert( false , __FUNCTION__ , "illegal source device for LAPIC input" );
	623	}
	624	}
	625	}
	626	} // end lapic_init()
	627
	628	///////////////////////////////////////////////////////////////////////////////////////////
[14]	629	// This static function returns the identifiers of the calling core.
	630	///////////////////////////////////////////////////////////////////////////////////////////
	631	// @ info : pointer on boot_info structure.
	632	// @ lid : [out] core local index in cluster.
	633	// @ cxy : [out] cluster identifier.
	634	// @ lid : [out] core global identifier (hardware).
	635	// @ return 0 if success / return EINVAL if not found.
	636	///////////////////////////////////////////////////////////////////////////////////////////
[23]	637	static error_t get_core_identifiers( boot_info_t * info,
	638	lid_t * lid,
[14]	639	cxy_t * cxy,
	640	gid_t * gid )
	641	{
[127]	642	uint32_t i;
[14]	643	gid_t global_id;
[19]	644
[14]	645	// get global identifier from hardware register
[127]	646	global_id = hal_get_gid();
[14]	647
	648	// makes an associative search in boot_info to get (cxy,lid) from global_id
	649	for( i = 0 ; i < info->cores_nr ; i++ )
	650	{
	651	if( global_id == info->core[i].gid )
	652	{
	653	*lid = info->core[i].lid;
	654	*cxy = info->core[i].cxy;
	655	*gid = global_id;
	656	return 0;
	657	}
	658	}
	659	return EINVAL;
[19]	660	}
[14]	661
	662	///////////////////////////////////////////////////////////////////////////////////////////
[1]	663	// This function is the entry point for the kernel initialisation.
[19]	664	// It is executed by all cores in all clusters, but only core[0], called CP0,
[14]	665	// initializes the shared resources such as the cluster manager, or the local peripherals.
[19]	666	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
	667	// only information contained in the local boot_info_t structure, set by the bootloader.
[103]	668	// Only CP0 in cluster 0 print the log messages.
[1]	669	///////////////////////////////////////////////////////////////////////////////////////////
	670	// @ info : pointer on the local boot-info structure.
	671	///////////////////////////////////////////////////////////////////////////////////////////
	672	void kernel_init( boot_info_t * info )
	673	{
[188]	674	lid_t core_lid = -1; // running core local index
	675	cxy_t core_cxy = -1; // running core cluster identifier
	676	gid_t core_gid; // running core hardware identifier
	677	cluster_t * cluster; // pointer on local cluster manager
	678	core_t * core; // pointer on running core descriptor
	679	thread_t * thread; // pointer on idle thread descriptor
	680	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
	681	// xptr_t devfs_root_inode_xp; // extended pointer on DEVFS root inode
[1]	682	error_t error;
	683
[188]	684	cxy_t io_cxy = info->io_cxy;
	685
	686	/////////////////////////////////////////////////////////////////////////////////
	687	// STEP 0 : Each core get its core identifier from boot_info, and makes
	688	// a partial initialisation of its private idle thread descriptor.
	689	// CP0 initializes the "local_cxy" global variable.
	690	// CP0 in cluster IO initializes the TXT0 chdev to print log messages.
	691	/////////////////////////////////////////////////////////////////////////////////
	692
[23]	693	error = get_core_identifiers( info,
[14]	694	&core_lid,
	695	&core_cxy,
	696	&core_gid );
[1]	697
[127]	698	// CP0 initializes cluster identifier
[14]	699	if( core_lid == 0 ) local_cxy = info->cxy;
[1]	700
[127]	701	// each core gets a pointer on its private idle thread descriptor
	702	thread = (thread_t )( idle_threads + (core_lid CONFIG_THREAD_DESC_SIZE) );
[68]	703
[127]	704	// each core registers this thread pointer in hardware register
[68]	705	hal_set_current_thread( thread );
[71]	706
[188]	707	// each core initializes the idle thread "locks_root" and "xlocks_root" fields
[124]	708	list_root_init( &thread->locks_root );
[188]	709	xlist_root_init( XPTR( local_cxy , &thread->xlocks_root ) );
[124]	710
[188]	711	// CP0 in I/O cluster initialises TXT0 chdev descriptor
	712	if( (core_lid == 0) && (core_cxy == io_cxy) ) txt0_device_init( info );
[14]	713
	714	/////////////////////////////////////////////////////////////////////////////////
[188]	715	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[14]	716	(info->x_size * info->y_size) );
	717	barrier_wait( &local_barrier , info->cores_nr );
	718
[188]	719	if( (core_lid == 0) && (local_cxy == 0) )
	720	kinit_dmsg("\n[INFO] %s exit barrier 0 at cycle %d : TXT0 initialized\n",
	721	__FUNCTION__, (uint32_t)hal_time_stamp());
[14]	722
[188]	723	/////////////////////////////////////////////////////////////////////////////
	724	// STEP 1 : all cores check its core identifier.
	725	// CP0 initializes the local cluster manager.
	726	// This includes the memory allocators.
	727	/////////////////////////////////////////////////////////////////////////////
	728
	729	// all cores check identifiers
[14]	730	if( error )
[1]	731	{
[103]	732	nolock_printk("\n[PANIC] in %s : illegal core identifiers"
[14]	733	" gid = %x / cxy = %x / lid = %d\n",
	734	__FUNCTION__ , core_lid , core_cxy , core_lid );
	735	hal_core_sleep();
[1]	736	}
	737
[188]	738	// CP0 initializes cluster manager
[14]	739	if( core_lid == 0 )
[1]	740	{
	741	error = cluster_init( info );
	742
[14]	743	if( error )
	744	{
[188]	745	nolock_printk("\n[PANIC] in %s : cannot initialise cluster %x",
[14]	746	__FUNCTION__ , local_cxy );
	747	hal_core_sleep();
	748	}
	749	}
[5]	750
[14]	751	/////////////////////////////////////////////////////////////////////////////////
[188]	752	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[14]	753	(info->x_size * info->y_size) );
	754	barrier_wait( &local_barrier , info->cores_nr );
	755	/////////////////////////////////////////////////////////////////////////////////
[1]	756
[188]	757	if( (core_lid == 0) && (local_cxy == 0) )
	758	kinit_dmsg("\n[INFO] %s exit barrier 1 at cycle %d : clusters initialised\n",
	759	__FUNCTION__, (uint32_t)hal_time_stamp());
[1]	760
[188]	761	/////////////////////////////////////////////////////////////////////////////////
	762	// STEP 2 : all CP0s initialize the process_zero descriptor.
	763	// CP0 in cluster 0 initialises the IOPIC device.
	764	// all CP0s complete the distibuted LAPIC initialization.
	765	/////////////////////////////////////////////////////////////////////////////////
	766
	767	// all cores get pointer on local cluster manager & core descriptor
[14]	768	cluster = &cluster_manager;
[127]	769	core = &cluster->core_tbl[core_lid];
[1]	770
[188]	771	// all CP0s initialize the process_zero descriptor
[101]	772	if( core_lid == 0 ) process_reference_init( &process_zero , 0 , XPTR_NULL );
[5]	773
[188]	774	// CP0 in cluster 0 initializes the PIC chdev,
	775	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
	776
	777	// all CP0s initialize their local LAPIC extension,
	778	if( core_lid == 0 ) lapic_init( info );
[124]	779
[188]	780	////////////////////////////////////////////////////////////////////////////////
	781	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	782	(info->x_size * info->y_size) );
	783	barrier_wait( &local_barrier , info->cores_nr );
	784	////////////////////////////////////////////////////////////////////////////////
[127]	785
[188]	786	if( (core_lid == 0) && (local_cxy == 0) )
	787	kinit_dmsg("\n[INFO] %s exit barrier 2 at cycle %d : PIC initialised\n",
	788	__FUNCTION__, (uint32_t)hal_time_stamp());
[1]	789
[188]	790	////////////////////////////////////////////////////////////////////////////////
	791	// STEP 3 : all CP0s initialize their local chdev descriptors
	792	// (both internal devices and external devices).
	793	////////////////////////////////////////////////////////////////////////////////
[5]	794
[188]	795	// CP0 scan the internal (private) peripherals,
	796	// and allocates memory for the corresponding chdev descriptors.
	797	if( core_lid == 0 ) internal_devices_init( info );
	798
[1]	799
[50]	800	// All CP0s contribute to initialise external peripheral chdev descriptors.
[14]	801	// Each CP0[cxy] scan the set of external (shared) peripherals (but the TXT0),
	802	// and allocates memory for the chdev descriptors that must be placed
[127]	803	// on the (cxy) cluster according to the global index value.
[188]	804
[14]	805	if( core_lid == 0 ) external_devices_init( info );
[1]	806
[14]	807	/////////////////////////////////////////////////////////////////////////////////
[188]	808	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[14]	809	(info->x_size * info->y_size) );
	810	barrier_wait( &local_barrier , info->cores_nr );
	811	/////////////////////////////////////////////////////////////////////////////////
[5]	812
[188]	813	if( (core_lid == 0) && (local_cxy == 0) )
	814	kinit_dmsg("\n[INFO] %s exit barrier 3 at cycle %d : all chdev initialised\n",
	815	__FUNCTION__, (uint32_t)hal_time_stamp());
[1]	816
[188]	817	/////////////////////////////////////////////////////////////////////////////////
	818	// STEP 4 : Alls cores initialize their private IDLE thread.
	819	// Only CP0 in cluster 0 creates the VFS root inode.
	820	// It access the boot device to initialize the file system context.
	821	/////////////////////////////////////////////////////////////////////////////////
	822
	823	// all cores create idle thread descriptor
[14]	824	error = thread_kernel_init( thread,
[127]	825	THREAD_IDLE,
	826	&thread_idle_func,
[14]	827	NULL,
	828	core_lid );
	829	if( error )
[1]	830	{
[103]	831	nolock_printk("\n[PANIC] in %s : core[%x][%d] cannot initialize idle thread\n",
	832	__FUNCTION__ , local_cxy , core_lid );
[14]	833	hal_core_sleep();
[1]	834	}
	835
[188]	836	// all cores register idle thread in scheduler
[103]	837	core->scheduler.idle = thread;
[1]	838
[188]	839	// all core activate the idle thread
[103]	840	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
	841
[188]	842	if( (core_lid == 0) && (local_cxy == 0) )
[103]	843	{
[188]	844	kinit_dmsg("\n[INFO] %s : created idle thread %x at cycle %d\n",
	845	__FUNCTION__ , thread , (uint32_t)hal_time_stamp());
[14]	846	}
	847
[188]	848	// CPO in cluster 0 creates the VFS root
	849	if( (core_lid == 0) && (local_cxy == 0 ) )
[14]	850	{
[188]	851	vfs_root_inode_xp = XPTR_NULL;
[23]	852
[188]	853	// File System must be FATFS in this implementation,
	854	// but other File System can be introduced here
[23]	855	if( CONFIG_VFS_ROOT_IS_FATFS )
	856	{
[188]	857	// 1. create FATFS context in cluster 0
	858	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	859
	860	nolock_assert( (fatfs_ctx != NULL) , __FUNCTION__ ,
	861	"cannot create FATFS context in cluster 0\n" );
	862
	863	// 2. access boot device to initialize FATFS context
	864	fatfs_ctx_init( fatfs_ctx );
	865
	866	// 3. get various informations from FATFS context
	867	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
	868	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
	869	fatfs_ctx->sectors_per_cluster;
	870	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
	871
	872	// 4. create VFS root inode in cluster 0
	873	error = vfs_inode_create( XPTR_NULL, // dentry_xp
	874	FS_TYPE_FATFS, // fs_type
	875	INODE_TYPE_DIR, // inode_type
	876	(void *)(intptr_t)root_dir_cluster, // extend
	877	0, // attr
	878	0, // rights
	879	0, // uid
	880	0, // gid
	881	&vfs_root_inode_xp ); // return
	882
	883	nolock_assert( (error == 0) , __FUNCTION__ ,
	884	"cannot create VFS root inode\n" );
	885
	886	// 5. initialize VFS context for FAT in cluster 0
	887	vfs_ctx_init( FS_TYPE_FATFS, // file system type
	888	0, // attributes
	889	total_clusters,
	890	cluster_size,
	891	vfs_root_inode_xp, // VFS root
	892	fatfs_ctx ); // extend
[23]	893	}
	894	else
	895	{
[103]	896	nolock_printk("\n[PANIC] in %s : root FS must be FATFS\n", __FUNCTION__ );
[23]	897	hal_core_sleep();
	898	}
	899
[188]	900	// register VFS root inode in process_zero
	901	process_zero.vfs_root_xp = vfs_root_inode_xp;
	902	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
	903	}
	904
	905	/////////////////////////////////////////////////////////////////////////////////
	906	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	907	(info->x_size * info->y_size) );
	908	barrier_wait( &local_barrier , info->cores_nr );
	909	/////////////////////////////////////////////////////////////////////////////////
	910
	911	if( (core_lid == 0) && (local_cxy == 0) )
	912	kinit_dmsg("\n[INFO] %s exit barrier 4 at cycle %d : VFS OK in cluster 0\n",
	913	__FUNCTION__, (uint32_t)hal_time_stamp());
	914
	915	/////////////////////////////////////////////////////////////////////////////////
	916	// STEP 5 : Other CP0s allocate memory for the selected FS context,
	917	// and initialise both the local FS context and the local VFS context
	918	// from values stored in cluster 0.
	919	// They get the VFS root inode extended pointer from cluster 0.
	920	/////////////////////////////////////////////////////////////////////////////////
	921
	922	if( (core_lid == 0) && (local_cxy != 0) )
	923	{
	924	// File System must be FATFS in this implementation,
	925	// but other File System can be introduced here
	926	if( CONFIG_VFS_ROOT_IS_FATFS )
[23]	927	{
[188]	928	// allocate memory for FATFS context
	929	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	930
	931	nolock_assert( (fatfs_ctx != NULL) , __FUNCTION__ ,
	932	"cannot create FATFS context\n" );
	933
	934	// get local pointer on VFS context for FATFS
	935	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	936
	937	// copy VFS context from cluster 0 to local cluster
	938	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
	939	XPTR( 0 , vfs_ctx ),
	940	sizeof(vfs_ctx_t) );
	941
	942	// copy FATFS context from cluster 0 to local cluster
	943	hal_remote_memcpy( XPTR( local_cxy , fatfs_ctx ),
	944	XPTR( 0 , fatfs_ctx ),
	945	sizeof(fatfs_ctx_t) );
	946
	947	// update extend field in local copy of VFS context
	948	vfs_ctx->extend = fatfs_ctx;
[23]	949	}
	950
[188]	951	// get extended pointer on VFS root inode from cluster 0
	952	vfs_root_inode_xp = hal_remote_lwd( XPTR( 0 , process_zero.vfs_root_xp ) );
[101]	953
[188]	954	// update local process_zero descriptor
	955	process_zero.vfs_root_xp = vfs_root_inode_xp;
	956	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
[14]	957	}
	958
[188]	959	/////////////////////////////////////////////////////////////////////////////////
	960	// global &local synchro to protect File System initialisation
	961	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	962	(info->x_size * info->y_size) );
	963	barrier_wait( &local_barrier , info->cores_nr );
[101]	964
[188]	965	if( (core_lid == 0) && (local_cxy == 0) )
	966	kinit_dmsg("\n[INFO] %s exit barrier 5 at cycle %d : VFS OK in all clusters\n",
	967	__FUNCTION__, (uint32_t)hal_time_stamp());
	968
	969
	970	/////////////////////////////////////////////////////////////////////////////////
	971	// STEP 6 : CP0 in cluster IO makes the global DEVFS tree initialisation:
	972	// It creates the DEVFS root directory and the DEVFS "external"
	973	// diretory in cluster IO and mount these inodes into VFS.
	974	/////////////////////////////////////////////////////////////////////////////////
	975
	976	if( (core_lid == 0) && (local_cxy == io_cxy) )
[1]	977	{
[188]	978	xptr_t devfs_root_inode_xp; // extended pointer on DEVFS root directory
	979	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external directory
	980
	981	// create "dev" and "external" directories.
	982	devfs_global_init( process_zero.vfs_root_xp,
	983	&devfs_root_inode_xp,
	984	&devfs_external_inode_xp );
	985
	986	// creates the DEVFS context in cluster IO
	987	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
	988
	989	nolock_assert( (devfs_ctx != NULL) , __FUNCTION__ ,
	990	"cannot create DEVFS context in cluster IO\n");
	991
	992	// register DEVFS root and external directories
	993	devfs_ctx_init( devfs_ctx, devfs_root_inode_xp, devfs_external_inode_xp );
	994	}
	995
	996	/////////////////////////////////////////////////////////////////////////////////
	997	// global &local synchro to protect File System initialisation
	998	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	999	(info->x_size * info->y_size) );
	1000	barrier_wait( &local_barrier , info->cores_nr );
	1001
	1002	if( (core_lid == 0) && (local_cxy == 0) )
	1003	kinit_dmsg("\n[INFO] %s exit barrier 6 at cycle %d : DEVFS OK in cluster IO\n",
	1004	__FUNCTION__, (uint32_t)hal_time_stamp());
	1005
	1006	/////////////////////////////////////////////////////////////////////////////////
	1007	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
	1008	// Each CP0 get the "dev" and "external" extended pointers from
	1009	// values storred in cluster IO. Then CP0 in cluster(i) creates the
	1010	// DEVFS "internal directory, and creates the pseudo-files for all
	1011	// chdevs contained in cluster (i).
	1012	/////////////////////////////////////////////////////////////////////////////////
	1013
	1014	if( core_lid == 0 )
	1015	{
	1016	xptr_t root_inode_xp; // extended pointer on DEVFS root directory
	1017	xptr_t external_inode_xp; // extended pointer on DEVFS external directory
	1018
	1019	// get extended pointer on "extend" field of VFS context for DEVFS in cluster IO
	1020	xptr_t extend_xp = XPTR( io_cxy , &fs_context[FS_TYPE_DEVFS].extend );
	1021
	1022	// get pointer on DEVFS context in cluster IO
	1023	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
	1024
	1025	root_inode_xp = hal_remote_lwd( XPTR( io_cxy , &devfs_ctx->root_inode_xp ) );
	1026	external_inode_xp = hal_remote_lwd( XPTR( io_cxy , &devfs_ctx->external_inode_xp ) );
	1027
	1028	devfs_local_init( root_inode_xp,
	1029	external_inode_xp );
	1030	}
	1031
	1032	/////////////////////////////////////////////////////////////////////////////////
	1033	// global &local synchro to protect File System initialisation
	1034	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1035	(info->x_size * info->y_size) );
	1036	barrier_wait( &local_barrier , info->cores_nr );
	1037
	1038	if( (core_lid == 0) && (local_cxy == 0) )
	1039	kinit_dmsg("\n[INFO] %s exit barrier 7 at cycle %d : DEVFS OK in all clusters\n",
	1040	__FUNCTION__, (uint32_t)hal_time_stamp());
	1041
	1042	/////////////////////////////////////////////////////////////////////////////////
	1043	// STEP 8 : CP0 in I/O cluster creates the process_init and print banner.
	1044	/////////////////////////////////////////////////////////////////////////////////
	1045
	1046	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1047	{
[101]	1048	process_init_create();
[188]	1049	}
[101]	1050
[188]	1051	/////////////////////////////////////////////////////////////////////////////////
	1052	// global syncho to protect access to File System
	1053	if( core_lid == 0 ) remote_barrier( XPTR( info->io_cxy , &global_barrier ),
	1054	(info->x_size * info->y_size) );
	1055	barrier_wait( &local_barrier , info->cores_nr );
	1056
	1057	if( (core_lid == 0) && (local_cxy == 0) )
	1058	kinit_dmsg("\n[INFO] %s exit barrier 8 at cycle %d : process init created\n",
	1059	__FUNCTION__ , (uint32_t)hal_time_stamp() );
	1060
	1061	/////////////////////////////////////////////////////////////////////////////////
	1062	// STEP 9 : CP0 in cluster 0 print banner
	1063	/////////////////////////////////////////////////////////////////////////////////
	1064
	1065	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1066	{
[5]	1067	print_banner( (info->x_size * info->y_size) , info->cores_nr );
[68]	1068
	1069	kinit_dmsg("\n\n* memory fooprint of main kernet objects *\n"
	1070	" - thread descriptor : %d bytes\n"
	1071	" - process descriptor : %d bytes\n"
	1072	" - cluster manager : %d bytes\n"
	1073	" - chdev descriptor : %d bytes\n"
	1074	" - core descriptor : %d bytes\n"
	1075	" - scheduler : %d bytes\n"
	1076	" - rpc fifo : %d bytes\n"
	1077	" - page descriptor : %d bytes\n"
	1078	" - mapper root : %d bytes\n"
	1079	" - ppm manager : %d bytes\n"
	1080	" - kcm manager : %d bytes\n"
	1081	" - khm manager : %d bytes\n"
	1082	" - vmm manager : %d bytes\n"
	1083	" - gpt root : %d bytes\n"
	1084	" - list item : %d bytes\n"
	1085	" - xlist item : %d bytes\n"
	1086	" - spinlock : %d bytes\n"
	1087	" - remote spinlock : %d bytes\n"
	1088	" - rwlock : %d bytes\n"
	1089	" - remote rwlock : %d bytes\n",
[127]	1090	sizeof( thread_t ),
[68]	1091	sizeof( process_t ),
	1092	sizeof( cluster_t ),
	1093	sizeof( chdev_t ),
	1094	sizeof( core_t ),
	1095	sizeof( scheduler_t ),
	1096	sizeof( rpc_fifo_t ),
	1097	sizeof( page_t ),
	1098	sizeof( mapper_t ),
	1099	sizeof( ppm_t ),
	1100	sizeof( kcm_t ),
	1101	sizeof( khm_t ),
	1102	sizeof( vmm_t ),
	1103	sizeof( gpt_t ),
	1104	sizeof( list_entry_t ),
	1105	sizeof( xlist_entry_t ),
	1106	sizeof( spinlock_t ),
	1107	sizeof( remote_spinlock_t ),
	1108	sizeof( rwlock_t ),
	1109	sizeof( remote_rwlock_t ));
[1]	1110	}
	1111
[127]	1112	// each core activates its private PTI IRQ
[188]	1113	dev_pic_enable_timer( CONFIG_SCHED_TICK_PERIOD );
[14]	1114
[188]	1115	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1116	thread_dmsg("\n[INFO] %s complete kernel init in cluster 0 at cycle %d\n"
	1117	__FUNCTION__ , (uint32_t)hal_time_stamp() )
[14]	1118
	1119	// each core jump to idle thread
[50]	1120	thread_idle_func();
[127]	1121	}
[14]	1122

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