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source: trunk/kernel/kern/kernel_init.c @ 376

Last change on this file since 376 was 337, checked in by alain, 7 years ago
Introduce the delayed context switch if current thread has a lock.
File size: 50.4 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>
[279]	30	#include <hal_irqmask.h>
[296]	31	#include <hal_ppm.h>
[14]	32	#include <barrier.h>
[1]	33	#include <remote_barrier.h>
	34	#include <core.h>
	35	#include <list.h>
[68]	36	#include <xlist.h>
[204]	37	#include <xhtab.h>
[1]	38	#include <thread.h>
	39	#include <scheduler.h>
	40	#include <kmem.h>
	41	#include <cluster.h>
	42	#include <string.h>
	43	#include <memcpy.h>
	44	#include <ppm.h>
	45	#include <page.h>
[5]	46	#include <chdev.h>
[1]	47	#include <boot_info.h>
	48	#include <dqdt.h>
	49	#include <dev_mmc.h>
[5]	50	#include <dev_dma.h>
	51	#include <dev_iob.h>
[1]	52	#include <dev_ioc.h>
[5]	53	#include <dev_txt.h>
[1]	54	#include <dev_pic.h>
	55	#include <printk.h>
	56	#include <vfs.h>
[23]	57	#include <devfs.h>
[68]	58	#include <mapper.h>
[1]	59
[5]	60	#define KERNEL_INIT_SYNCHRO 0xA5A5B5B5
[1]	61
	62	///////////////////////////////////////////////////////////////////////////////////////////
[279]	63	// All the following global variables are replicated in all clusters.
[1]	64	// They are initialised by the kernel_init() function.
[14]	65	//
[127]	66	// WARNING : The section names have been defined to control the base addresses of the
[14]	67	// boot_info structure and the idle thread descriptors, through the kernel.ld script:
[127]	68	// - the boot_info structure is built by the bootloader, and used by kernel_init.
	69	// it must be the first object in the kdata segment.
[14]	70	// - the array of idle threads descriptors must be placed on the first page boundary after
	71	// the boot_info structure in the kdata segment.
[1]	72	///////////////////////////////////////////////////////////////////////////////////////////
	73
[5]	74	// This variable defines the local boot_info structure
	75	__attribute__((section(".kinfo")))
[14]	76	boot_info_t boot_info;
[5]	77
[14]	78	// This variable defines the "idle" threads descriptors array
	79	__attribute__((section(".kidle")))
	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")))
[246]	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"
[279]	139	"\n\n\t\t\t Version 0.0 : %d cluster(s) / %d core(s) 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	} // end loop on devices
	209	} // end txt0_device_init()
[5]	210
[1]	211	///////////////////////////////////////////////////////////////////////////////////////////
[188]	212	// This function allocates memory and initializes the chdev descriptors for the internal
	213	// peripherals contained in the local cluster, other than the LAPIC, as specified by
	214	// the boot_info, including the linking with the driver for the specified implementation.
	215	// The relevant entries in all copies of the devices directory are initialised.
[1]	216	///////////////////////////////////////////////////////////////////////////////////////////
	217	// @ info : pointer on the local boot-info structure.
	218	///////////////////////////////////////////////////////////////////////////////////////////
[5]	219	static void internal_devices_init( boot_info_t * info )
[1]	220	{
[188]	221	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
	222	uint32_t dev_nr; // actual number of devices in this cluster
	223	xptr_t base; // remote pointer on segment base
	224	uint32_t func; // device functionnal index
	225	uint32_t impl; // device implementation index
	226	uint32_t i; // device index in dev_tbl
	227	uint32_t x; // X cluster coordinate
	228	uint32_t y; // Y cluster coordinate
	229	uint32_t channels; // number of channels
	230	uint32_t channel; // channel index
	231	chdev_t * chdev_ptr; // local pointer on created chdev
[1]	232
[188]	233	// get number of internal peripherals and base from boot_info
	234	dev_nr = info->int_dev_nr;
	235	dev_tbl = info->int_dev;
[1]	236
[188]	237	// loop on internal peripherals
	238	for( i = 0 ; i < dev_nr ; i++ )
	239	{
	240	base = dev_tbl[i].base;
	241	channels = dev_tbl[i].channels;
	242	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	243	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[204]	244
[188]	245	//////////////////////////
	246	if( func == DEV_FUNC_MMC )
[5]	247	{
[188]	248	assert( (channels == 1) , __FUNCTION__ ,
	249	"MMC device must be single channel\n" );
[1]	250
[188]	251	// create chdev in local cluster
	252	chdev_ptr = chdev_create( func,
	253	impl,
	254	0, // channel
	255	false, // direction
	256	base );
[14]	257
[188]	258	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	259	"cannot allocate memory for MMC chdev\n" );
	260
	261	// make MMC specific initialisation
	262	dev_mmc_init( chdev_ptr );
[1]	263
[188]	264	// set the MMC field in all chdev_dir[x][y] structures
	265	for( x = 0 ; x < info->x_size ; x++ )
[1]	266	{
[188]	267	for( y = 0 ; y < info->y_size ; y++ )
	268	{
	269	cxy_t cxy = (x<<info->y_width) + y;
	270	hal_remote_swd( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
	271	XPTR( local_cxy , chdev_ptr ) );
	272	}
[1]	273	}
[188]	274
[337]	275	kinit_dmsg("\n[INFO] %s : created MMC in cluster %x / chdev = %x\n",
[279]	276	__FUNCTION__ , channel , local_cxy , chdev_ptr );
[14]	277	}
[188]	278	///////////////////////////////
	279	else if( func == DEV_FUNC_DMA )
[127]	280	{
[188]	281	// create one chdev per channel in local cluster
	282	for( channel = 0 ; channel < channels ; channel++ )
	283	{
	284	// create chdev[channel] in local cluster
	285	chdev_ptr = chdev_create( func,
	286	impl,
	287	channel,
	288	false, // direction
	289	base );
[5]	290
[188]	291	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	292	"cannot allocate memory for DMA chdev" );
	293
	294	// make DMA specific initialisation
	295	dev_dma_init( chdev_ptr );
[127]	296
[188]	297	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
	298	// structure because the DMA device is not remotely accessible.
	299	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
[5]	300
[337]	301	kinit_dmsg("\n[INFO] %s : created DMA[%d] in cluster %x / chdev = %x\n",
[279]	302	__FUNCTION__ , channel , local_cxy , chdev_ptr );
[188]	303	}
[14]	304	}
[127]	305	}
[5]	306	} // end internal_devices_init()
	307
	308	///////////////////////////////////////////////////////////////////////////////////////////
[188]	309	// This function allocates memory and initializes the chdev descriptors for the
	310	// external (shared) peripherals other than the IOPIC, as specified by the boot_info,
[5]	311	// including the dynamic linking with the driver for the specified implementation.
[188]	312	// These chdev descriptors are distributed on all clusters, using a modulo on a global
	313	// index, identically computed in all clusters: In each cluster, the local CP0 core
	314	// computes the global index for all external chdevs, and creates only the chdevs that
	315	// must be placed in the local cluster.
	316	// The relevant entries in all copies of the devices directory are initialised.
[5]	317	///////////////////////////////////////////////////////////////////////////////////////////
	318	// @ info : pointer on the local boot-info structure.
	319	///////////////////////////////////////////////////////////////////////////////////////////
	320	static void external_devices_init( boot_info_t * info )
	321	{
[188]	322	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
	323	uint32_t dev_nr; // actual number of external devices
	324	xptr_t base; // remote pointer on segment base
[5]	325	uint32_t func; // device functionnal index
	326	uint32_t impl; // device implementation index
[188]	327	uint32_t i; // device index in dev_tbl
	328	uint32_t x; // X cluster coordinate
	329	uint32_t y; // Y cluster coordinate
	330	uint32_t channels; // number of channels
	331	uint32_t channel; // channel index
	332	uint32_t directions; // number of directions (1 or 2)
	333	uint32_t rx; // direction index (0 or 1)
	334	uint32_t first_channel; // used in loop on channels for TXT
[127]	335	chdev_t * chdev; // local pointer on one channel_device descriptor
[188]	336	uint32_t ext_chdev_gid; // global index of external chdev
[5]	337
	338	// get number of peripherals and base of devices array from boot_info
[127]	339	dev_nr = info->ext_dev_nr;
[5]	340	dev_tbl = info->ext_dev;
	341
[188]	342	// initializes global index (PIC is already placed in cluster 0
	343	ext_chdev_gid = 1;
	344
[5]	345	// loop on external peripherals
[127]	346	for( i = 0 ; i < dev_nr ; i++ )
	347	{
[188]	348	base = dev_tbl[i].base;
	349	channels = dev_tbl[i].channels;
	350	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	351	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	352
	353	// There is one chdev per direction for NIC
[188]	354	if (func == DEV_FUNC_NIC) directions = 2;
	355	else directions = 1;
[5]	356
	357	// The TXT0 chdev has already been created
	358	if (func == DEV_FUNC_TXT) first_channel = 1;
	359	else first_channel = 0;
	360
[188]	361	// do nothing for RO, that does not require a device descriptor.
[5]	362	if( func == DEV_FUNC_ROM ) continue;
	363
[188]	364	// do nothing for PIC, that is already initialized
	365	if( func == DEV_FUNC_PIC ) continue;
[5]	366
[188]	367	// check PIC device initialized
	368	assert( (chdev_dir.pic != XPTR_NULL ) , __FUNCTION__ ,
	369	"PIC device must be initialized before other devices\n" );
	370
	371	// check external device functionnal type
	372	assert( ( (func == DEV_FUNC_IOB) \|\|
	373	(func == DEV_FUNC_IOC) \|\|
	374	(func == DEV_FUNC_TXT) \|\|
	375	(func == DEV_FUNC_NIC) \|\|
	376	(func == DEV_FUNC_FBF) ) , __FUNCTION__ ,
	377	"undefined external peripheral type\n" );
	378
[127]	379	// loops on channels
[188]	380	for( channel = first_channel ; channel < channels ; channel++ )
[127]	381	{
[5]	382	// loop on directions
[188]	383	for( rx = 0 ; rx < directions ; rx++ )
[1]	384	{
[188]	385	// compute target cluster for chdev[func,channel,direction]
	386	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
[5]	387	uint32_t cx = offset / info->y_size;
	388	uint32_t cy = offset % info->y_size;
	389	uint32_t target_cxy = (cx<<info->y_width) + cy;
[1]	390
[5]	391	// allocate and initialize a local chdev
	392	// if local cluster matches target cluster
	393	if( target_cxy == local_cxy )
[1]	394	{
[5]	395	chdev = chdev_create( func,
	396	impl,
	397	channel,
[188]	398	rx, // direction
[5]	399	base );
	400
[127]	401	assert( (chdev != NULL), __FUNCTION__ ,
[5]	402	"cannot allocate external device" );
	403
	404	// make device type specific initialisation
	405	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
	406	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
	407	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
	408	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
[188]	409	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
[5]	410
[127]	411	// all external (shared) devices are remotely accessible
[5]	412	// initialize the replicated chdev_dir[x][y] structures
[127]	413	// defining the extended pointers on chdev descriptors
	414	xptr_t * entry;
	415
[188]	416	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
	417	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
	418	if(func==DEV_FUNC_TXT ) entry = &chdev_dir.txt[channel];
	419	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
	420	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
	421	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
[127]	422
[1]	423	for( x = 0 ; x < info->x_size ; x++ )
	424	{
	425	for( y = 0 ; y < info->y_size ; y++ )
	426	{
	427	cxy_t cxy = (x<<info->y_width) + y;
[188]	428	hal_remote_swd( XPTR( cxy , entry ),
	429	XPTR( local_cxy , chdev ) );
[5]	430	}
[1]	431	}
	432
[337]	433	kinit_dmsg("\n[INFO] %s : create chdev %s[%d] in cluster %x / chdev = %x\n",
[279]	434	__FUNCTION__ , chdev_func_str( func ), channel , local_cxy , chdev );
[5]	435
	436	} // end if match
	437
[19]	438	// increment chdev global index (matching or not)
[188]	439	ext_chdev_gid++;
[5]	440
	441	} // end loop on directions
	442	} // end loop on channels
[188]	443	} // end loop on devices
	444	} // end external_devices_init()
[5]	445
[188]	446	///////////////////////////////////////////////////////////////////////////////////////////
	447	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
	448	// device, namely the informations attached to the external IOPIC controller.
	449	// This initialisation must be done before other devices initialisation because the IRQ
	450	// routing infrastructure is required for internal and external devices initialisation.
	451	///////////////////////////////////////////////////////////////////////////////////////////
	452	// @ info : pointer on the local boot-info structure.
	453	///////////////////////////////////////////////////////////////////////////////////////////
	454	static void iopic_init( boot_info_t * info )
	455	{
	456	boot_device_t * dev_tbl; // pointer on boot_info external devices array
	457	uint32_t dev_nr; // actual number of external devices
	458	xptr_t base; // remote pointer on segment base
	459	uint32_t func; // device functionnal index
	460	uint32_t impl; // device implementation index
	461	uint32_t i; // device index in dev_tbl
	462	uint32_t x; // cluster X coordinate
	463	uint32_t y; // cluster Y coordinate
	464	bool_t found; // IOPIC found
	465	chdev_t * chdev; // pointer on PIC chdev descriptor
	466
	467	// get number of external peripherals and base of array from boot_info
	468	dev_nr = info->ext_dev_nr;
	469	dev_tbl = info->ext_dev;
	470
	471	// loop on external peripherals to get the IOPIC
	472	for( i = 0 , found = false ; i < dev_nr ; i++ )
	473	{
	474	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	475
[127]	476	if( func == DEV_FUNC_PIC )
[1]	477	{
[188]	478	base = dev_tbl[i].base;
	479	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	480	found = true;
	481	break;
	482	}
	483	}
[5]	484
[188]	485	assert( found , __FUNCTION__ , "PIC device not found\n" );
[1]	486
[188]	487	// allocate and initialize the PIC chdev in local cluster
	488	chdev = chdev_create( func,
	489	impl,
	490	0, // channel
	491	0, // direction,
	492	base );
[5]	493
[188]	494	assert( (chdev != NULL), __FUNCTION__ , "no memory for PIC chdev\n" );
[5]	495
[188]	496	// make PIC device type specific initialisation
	497	dev_pic_init( chdev );
[1]	498
[188]	499	// register extended pointer on PIC chdev in "chdev_dir" array in all clusters
	500	xptr_t * entry = &chdev_dir.pic;
	501
	502	for( x = 0 ; x < info->x_size ; x++ )
	503	{
	504	for( y = 0 ; y < info->y_size ; y++ )
	505	{
	506	cxy_t cxy = (x<<info->y_width) + y;
	507	hal_remote_swd( XPTR( cxy , entry ) ,
	508	XPTR( local_cxy , chdev ) );
	509	}
	510	}
[1]	511
[188]	512	// initialize the "iopic_input" structure
	513	// defining how external IRQs are connected to IOPIC
	514	uint32_t id;
	515	uint8_t valid;
	516	uint32_t type;
	517	uint8_t channel;
	518	uint8_t is_rx;
	519
	520	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
	521	{
	522	valid = dev_tbl[i].irq[id].valid;
	523	type = dev_tbl[i].irq[id].dev_type;
	524	channel = dev_tbl[i].irq[id].channel;
	525	is_rx = dev_tbl[i].irq[id].is_rx;
	526
	527	if( valid ) // only valid inputs are registered
	528	{
	529	uint32_t * index; // local pointer on one entry
	530	uint16_t func = FUNC_FROM_TYPE( type );
	531
	532	if ( func == DEV_FUNC_TXT )
	533	index = &iopic_input.txt[channel];
	534	else if( func == DEV_FUNC_IOC )
	535	index = &iopic_input.ioc[channel];
	536	else if( (func == DEV_FUNC_NIC) && (is_rx == 0) )
	537	index = &iopic_input.nic_tx[channel];
	538	else if( (func == DEV_FUNC_NIC) && (is_rx != 0) )
	539	index = &iopic_input.nic_rx[channel];
	540	else if( func == DEV_FUNC_IOB )
	541	index = &iopic_input.iob;
	542	else
	543	assert( false , __FUNCTION__ , "illegal source device for IOPIC input" );
	544
	545	// set entry in local structure
	546	*index = id;
	547	}
	548	}
	549
[204]	550	kinit_dmsg("\n[INFO] %s created PIC chdev in cluster %x at cycle %d\n",
[188]	551	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
	552
	553	} // end iopic_init()
	554
[1]	555	///////////////////////////////////////////////////////////////////////////////////////////
[188]	556	// This function is called by all CP0s in all cluster to complete the PIC device
	557	// initialisation, namely the informations attached to the LAPIC controller.
	558	// This initialisation must be done after the IOPIC initialisation, but before other
	559	// devices initialisation because the IRQ routing infrastructure is required for both
	560	// internal and external devices initialisation.
	561	///////////////////////////////////////////////////////////////////////////////////////////
	562	// @ info : pointer on the local boot-info structure.
	563	///////////////////////////////////////////////////////////////////////////////////////////
	564	static void lapic_init( boot_info_t * info )
	565	{
	566	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
	567	uint32_t dev_nr; // number of internal devices
	568	uint32_t i; // device index in dev_tbl
	569	xptr_t base; // remote pointer on segment base
	570	uint32_t func; // device functionnal type in boot_info
	571	bool_t found; // LAPIC found
	572
	573	// get number of internal peripherals and base
	574	dev_nr = info->int_dev_nr;
	575	dev_tbl = info->int_dev;
	576
	577	// loop on internal peripherals to get the lapic device
	578	for( i = 0 , found = false ; i < dev_nr ; i++ )
	579	{
	580	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	581
	582	if( func == DEV_FUNC_ICU )
	583	{
	584	base = dev_tbl[i].base;
	585	found = true;
	586	break;
	587	}
	588	}
	589
	590	// if the LAPIC controller is not defined in the boot_info,
	591	// we simply don't initialize the PIC extensions in the kernel,
	592	// making the assumption that the LAPIC related informations
	593	// are hidden in the hardware specific PIC driver.
	594	if( found )
	595	{
	596	// initialise the PIC extensions for
	597	// the core descriptor and core manager extensions
	598	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
	599
	600	// initialize the "lapic_input" structure
	601	// defining how internal IRQs are connected to LAPIC
	602	uint32_t id;
	603	uint8_t valid;
	604	uint8_t channel;
	605	uint32_t func;
	606
	607	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
	608	{
	609	valid = dev_tbl[i].irq[id].valid;
	610	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
	611	channel = dev_tbl[i].irq[id].channel;
	612
	613	if( valid ) // only valid local IRQs are registered
	614	{
	615	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
	616	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
	617	else assert( false , __FUNCTION__ , "illegal source device for LAPIC input" );
	618	}
	619	}
	620	}
	621	} // end lapic_init()
	622
	623	///////////////////////////////////////////////////////////////////////////////////////////
[14]	624	// This static function returns the identifiers of the calling core.
	625	///////////////////////////////////////////////////////////////////////////////////////////
	626	// @ info : pointer on boot_info structure.
	627	// @ lid : [out] core local index in cluster.
	628	// @ cxy : [out] cluster identifier.
	629	// @ lid : [out] core global identifier (hardware).
	630	// @ return 0 if success / return EINVAL if not found.
	631	///////////////////////////////////////////////////////////////////////////////////////////
[23]	632	static error_t get_core_identifiers( boot_info_t * info,
	633	lid_t * lid,
[14]	634	cxy_t * cxy,
	635	gid_t * gid )
	636	{
[127]	637	uint32_t i;
[14]	638	gid_t global_id;
[19]	639
[14]	640	// get global identifier from hardware register
[127]	641	global_id = hal_get_gid();
[14]	642
	643	// makes an associative search in boot_info to get (cxy,lid) from global_id
	644	for( i = 0 ; i < info->cores_nr ; i++ )
	645	{
	646	if( global_id == info->core[i].gid )
	647	{
	648	*lid = info->core[i].lid;
	649	*cxy = info->core[i].cxy;
	650	*gid = global_id;
	651	return 0;
	652	}
	653	}
	654	return EINVAL;
[19]	655	}
[14]	656
	657	///////////////////////////////////////////////////////////////////////////////////////////
[1]	658	// This function is the entry point for the kernel initialisation.
[19]	659	// It is executed by all cores in all clusters, but only core[0], called CP0,
[14]	660	// initializes the shared resources such as the cluster manager, or the local peripherals.
[19]	661	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
	662	// only information contained in the local boot_info_t structure, set by the bootloader.
[103]	663	// Only CP0 in cluster 0 print the log messages.
[1]	664	///////////////////////////////////////////////////////////////////////////////////////////
	665	// @ info : pointer on the local boot-info structure.
	666	///////////////////////////////////////////////////////////////////////////////////////////
	667	void kernel_init( boot_info_t * info )
	668	{
[204]	669	lid_t core_lid = -1; // running core local index
	670	cxy_t core_cxy = -1; // running core cluster identifier
	671	gid_t core_gid; // running core hardware identifier
	672	cluster_t * cluster; // pointer on local cluster manager
	673	core_t * core; // pointer on running core descriptor
	674	thread_t * thread; // pointer on idle thread descriptor
	675
	676	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
	677	xptr_t devfs_dev_inode_xp; // extended pointer on DEVFS dev inode
	678	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external inode
	679	xptr_t devfs_internal_inode_xp; // extended pointer on DEVFS internal inode
	680
[1]	681	error_t error;
[285]	682	reg_t status; // running core status register
[1]	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) )
[296]	720	kinit_dmsg("\n[INFO] %s : exit barrier 0 : TXT0 initialized / cycle %d\n",
	721	__FUNCTION__, 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	{
[279]	732	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	{
[279]	745	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) )
[296]	758	kinit_dmsg("\n[INFO] %s : exit barrier 1 : clusters initialised / cycle %d\n",
	759	__FUNCTION__, hal_time_stamp() );
[1]	760
[188]	761	/////////////////////////////////////////////////////////////////////////////////
	762	// STEP 2 : all CP0s initialize the process_zero descriptor.
[296]	763	// CP0 in cluster 0 initializes the IOPIC device.
[188]	764	/////////////////////////////////////////////////////////////////////////////////
	765
	766	// all cores get pointer on local cluster manager & core descriptor
[14]	767	cluster = &cluster_manager;
[127]	768	core = &cluster->core_tbl[core_lid];
[1]	769
[188]	770	// all CP0s initialize the process_zero descriptor
[101]	771	if( core_lid == 0 ) process_reference_init( &process_zero , 0 , XPTR_NULL );
[5]	772
[188]	773	// CP0 in cluster 0 initializes the PIC chdev,
	774	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
	775
	776	////////////////////////////////////////////////////////////////////////////////
	777	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	778	(info->x_size * info->y_size) );
	779	barrier_wait( &local_barrier , info->cores_nr );
	780	////////////////////////////////////////////////////////////////////////////////
[127]	781
[188]	782	if( (core_lid == 0) && (local_cxy == 0) )
[296]	783	kinit_dmsg("\n[INFO] %s : exit barrier 2 : PIC initialised / cycle %d\n",
	784	__FUNCTION__, hal_time_stamp() );
[1]	785
[188]	786	////////////////////////////////////////////////////////////////////////////////
[296]	787	// STEP 3 : all CP0s initialize the distibuted LAPIC descriptor.
	788	// all CP0s initialize the internal chdev descriptors
	789	// all CP0s initialize the local external chdev descriptors
[188]	790	////////////////////////////////////////////////////////////////////////////////
[5]	791
[279]	792	// all CP0s initialize their local LAPIC extension,
	793	if( core_lid == 0 ) lapic_init( info );
	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) )
[296]	814	kinit_dmsg("\n[INFO] %s : exit barrier 3 : all chdev initialised / cycle %d\n",
	815	__FUNCTION__, hal_time_stamp());
[1]	816
[188]	817	/////////////////////////////////////////////////////////////////////////////////
[279]	818	// STEP 4 : All cores enable IPI (Inter Procesor Interrupt),
[296]	819	// All cores initialise specific core registers
[279]	820	// Alh cores initialize IDLE thread.
[188]	821	// Only CP0 in cluster 0 creates the VFS root inode.
	822	// It access the boot device to initialize the file system context.
	823	/////////////////////////////////////////////////////////////////////////////////
	824
[279]	825	if( CONFIG_KINIT_DEBUG ) chdev_dir_display();
	826
	827	// All cores enable the shared IPI channel
	828	dev_pic_enable_ipi();
	829	hal_enable_irq( &status );
	830
[296]	831	// All cores initialize specific core registers
	832	hal_core_init( info );
	833
[279]	834	kinit_dmsg("\n[INFO] %s : IRQs enabled for core[%x,%d] / SR = %x\n",
	835	__FUNCTION__ , local_cxy , core_lid , hal_get_sr() );
	836
[296]	837	// all cores initialize the idle thread descriptor
[14]	838	error = thread_kernel_init( thread,
[127]	839	THREAD_IDLE,
	840	&thread_idle_func,
[14]	841	NULL,
	842	core_lid );
	843	if( error )
[1]	844	{
[279]	845	printk("\n[PANIC] in %s : core[%x][%d] cannot initialize idle thread\n",
[103]	846	__FUNCTION__ , local_cxy , core_lid );
[14]	847	hal_core_sleep();
[1]	848	}
	849
[296]	850	// all cores unblock idle thread, and register it in scheduler
	851	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
[103]	852	core->scheduler.idle = thread;
[1]	853
[188]	854	if( (core_lid == 0) && (local_cxy == 0) )
[103]	855	{
[296]	856	kinit_dmsg("\n[INFO] %s : initialized idle thread %x on core[%x,%d] / cycle %d\n",
	857	__FUNCTION__ , thread->trdid , local_cxy, core_lid, (uint32_t)hal_time_stamp());
[14]	858	}
	859
[296]	860	#if CONFIG_KINIT_DEBUG
	861	sched_display();
	862	#endif
	863
[188]	864	// CPO in cluster 0 creates the VFS root
	865	if( (core_lid == 0) && (local_cxy == 0 ) )
[14]	866	{
[188]	867	vfs_root_inode_xp = XPTR_NULL;
[23]	868
[188]	869	// File System must be FATFS in this implementation,
	870	// but other File System can be introduced here
[23]	871	if( CONFIG_VFS_ROOT_IS_FATFS )
	872	{
[188]	873	// 1. create FATFS context in cluster 0
	874	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	875
[279]	876	assert( (fatfs_ctx != NULL) , __FUNCTION__ ,
	877	"cannot create FATFS context in cluster 0\n" );
[188]	878
	879	// 2. access boot device to initialize FATFS context
	880	fatfs_ctx_init( fatfs_ctx );
	881
	882	// 3. get various informations from FATFS context
	883	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
	884	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
	885	fatfs_ctx->sectors_per_cluster;
	886	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
	887
	888	// 4. create VFS root inode in cluster 0
	889	error = vfs_inode_create( XPTR_NULL, // dentry_xp
	890	FS_TYPE_FATFS, // fs_type
	891	INODE_TYPE_DIR, // inode_type
	892	(void *)(intptr_t)root_dir_cluster, // extend
	893	0, // attr
	894	0, // rights
	895	0, // uid
	896	0, // gid
	897	&vfs_root_inode_xp ); // return
	898
[279]	899	assert( (error == 0) , __FUNCTION__ ,
	900	"cannot create VFS root inode\n" );
[188]	901
	902	// 5. initialize VFS context for FAT in cluster 0
	903	vfs_ctx_init( FS_TYPE_FATFS, // file system type
	904	0, // attributes
	905	total_clusters,
	906	cluster_size,
	907	vfs_root_inode_xp, // VFS root
	908	fatfs_ctx ); // extend
[23]	909	}
	910	else
	911	{
[279]	912	printk("\n[PANIC] in %s : root FS must be FATFS\n", __FUNCTION__ );
[23]	913	hal_core_sleep();
	914	}
	915
[188]	916	// register VFS root inode in process_zero
	917	process_zero.vfs_root_xp = vfs_root_inode_xp;
	918	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
	919	}
	920
	921	/////////////////////////////////////////////////////////////////////////////////
	922	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	923	(info->x_size * info->y_size) );
	924	barrier_wait( &local_barrier , info->cores_nr );
	925	/////////////////////////////////////////////////////////////////////////////////
	926
	927	if( (core_lid == 0) && (local_cxy == 0) )
[296]	928	kinit_dmsg("\n[INFO] %s : exit barrier 4 : VFS_root = %l in cluster 0 / cycle %d\n",
	929	__FUNCTION__, vfs_root_inode_xp , hal_time_stamp());
[188]	930
	931	/////////////////////////////////////////////////////////////////////////////////
	932	// STEP 5 : Other CP0s allocate memory for the selected FS context,
	933	// and initialise both the local FS context and the local VFS context
	934	// from values stored in cluster 0.
	935	// They get the VFS root inode extended pointer from cluster 0.
	936	/////////////////////////////////////////////////////////////////////////////////
	937
	938	if( (core_lid == 0) && (local_cxy != 0) )
	939	{
	940	// File System must be FATFS in this implementation,
	941	// but other File System can be introduced here
	942	if( CONFIG_VFS_ROOT_IS_FATFS )
[23]	943	{
[188]	944	// allocate memory for FATFS context
	945	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	946
[296]	947	assert( (fatfs_ctx != NULL) , __FUNCTION__ , "cannot create FATFS context\n" );
[188]	948
	949	// get local pointer on VFS context for FATFS
	950	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	951
	952	// copy VFS context from cluster 0 to local cluster
	953	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
	954	XPTR( 0 , vfs_ctx ),
	955	sizeof(vfs_ctx_t) );
	956
	957	// copy FATFS context from cluster 0 to local cluster
	958	hal_remote_memcpy( XPTR( local_cxy , fatfs_ctx ),
	959	XPTR( 0 , fatfs_ctx ),
	960	sizeof(fatfs_ctx_t) );
	961
	962	// update extend field in local copy of VFS context
	963	vfs_ctx->extend = fatfs_ctx;
[23]	964	}
	965
[188]	966	// get extended pointer on VFS root inode from cluster 0
[296]	967	vfs_root_inode_xp = hal_remote_lwd( XPTR( 0 , &process_zero.vfs_root_xp ) );
[101]	968
[188]	969	// update local process_zero descriptor
	970	process_zero.vfs_root_xp = vfs_root_inode_xp;
	971	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
[14]	972	}
	973
[188]	974	/////////////////////////////////////////////////////////////////////////////////
	975	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	976	(info->x_size * info->y_size) );
	977	barrier_wait( &local_barrier , info->cores_nr );
[204]	978	/////////////////////////////////////////////////////////////////////////////////
[101]	979
[296]	980	if( (core_lid == 0) && (local_cxy == io_cxy) )
	981	kinit_dmsg("\n[INFO] %s : exit barrier 5 : VFS_root = %l in cluster IO / cycle %d\n",
	982	__FUNCTION__, vfs_root_inode_xp , hal_time_stamp() );
[188]	983
	984	/////////////////////////////////////////////////////////////////////////////////
	985	// STEP 6 : CP0 in cluster IO makes the global DEVFS tree initialisation:
[204]	986	// It creates the DEVFS directory "dev", and the DEVFS "external"
	987	// directory in cluster IO and mount these inodes into VFS.
[188]	988	/////////////////////////////////////////////////////////////////////////////////
	989
	990	if( (core_lid == 0) && (local_cxy == io_cxy) )
[1]	991	{
[188]	992	// create "dev" and "external" directories.
	993	devfs_global_init( process_zero.vfs_root_xp,
[204]	994	&devfs_dev_inode_xp,
[188]	995	&devfs_external_inode_xp );
	996
	997	// creates the DEVFS context in cluster IO
	998	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
	999
[279]	1000	assert( (devfs_ctx != NULL) , __FUNCTION__ ,
	1001	"cannot create DEVFS context in cluster IO\n");
[188]	1002
	1003	// register DEVFS root and external directories
[204]	1004	devfs_ctx_init( devfs_ctx, devfs_dev_inode_xp, devfs_external_inode_xp );
[188]	1005	}
	1006
	1007	/////////////////////////////////////////////////////////////////////////////////
	1008	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1009	(info->x_size * info->y_size) );
	1010	barrier_wait( &local_barrier , info->cores_nr );
[204]	1011	/////////////////////////////////////////////////////////////////////////////////
[188]	1012
[296]	1013	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1014	kinit_dmsg("\n[INFO] %s : exit barrier 6 : dev_root = %l in cluster IO / cycle %d\n",
	1015	__FUNCTION__, devfs_dev_inode_xp , hal_time_stamp() );
[188]	1016
	1017	/////////////////////////////////////////////////////////////////////////////////
	1018	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
	1019	// Each CP0 get the "dev" and "external" extended pointers from
[204]	1020	// values stored in cluster IO.
[337]	1021	// Then each CP0 in cluster(i) creates the DEVFS "internal directory,
[204]	1022	// and creates the pseudo-files for all chdevs in cluster (i).
[188]	1023	/////////////////////////////////////////////////////////////////////////////////
	1024
	1025	if( core_lid == 0 )
	1026	{
	1027	// get extended pointer on "extend" field of VFS context for DEVFS in cluster IO
	1028	xptr_t extend_xp = XPTR( io_cxy , &fs_context[FS_TYPE_DEVFS].extend );
	1029
	1030	// get pointer on DEVFS context in cluster IO
	1031	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
	1032
[204]	1033	devfs_dev_inode_xp = hal_remote_lwd( XPTR( io_cxy ,
	1034	&devfs_ctx->dev_inode_xp ) );
	1035	devfs_external_inode_xp = hal_remote_lwd( XPTR( io_cxy ,
	1036	&devfs_ctx->external_inode_xp ) );
[188]	1037
[204]	1038	// populate DEVFS in all clusters
	1039	devfs_local_init( devfs_dev_inode_xp,
	1040	devfs_external_inode_xp,
	1041	&devfs_internal_inode_xp );
[188]	1042	}
	1043
	1044	/////////////////////////////////////////////////////////////////////////////////
	1045	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1046	(info->x_size * info->y_size) );
	1047	barrier_wait( &local_barrier , info->cores_nr );
[204]	1048	/////////////////////////////////////////////////////////////////////////////////
[188]	1049
	1050	if( (core_lid == 0) && (local_cxy == 0) )
[296]	1051	kinit_dmsg("\n[INFO] %s : exit barrier 7 : dev_root = %l in cluster 0 / cycle %d\n",
	1052	__FUNCTION__, devfs_dev_inode_xp , hal_time_stamp() );
[188]	1053
	1054	/////////////////////////////////////////////////////////////////////////////////
[204]	1055	// STEP 8 : CP0 in I/O cluster creates the first user process (process_init)
[188]	1056	/////////////////////////////////////////////////////////////////////////////////
	1057
	1058	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1059	{
[101]	1060	process_init_create();
[188]	1061	}
[101]	1062
[188]	1063	/////////////////////////////////////////////////////////////////////////////////
	1064	if( core_lid == 0 ) remote_barrier( XPTR( info->io_cxy , &global_barrier ),
	1065	(info->x_size * info->y_size) );
	1066	barrier_wait( &local_barrier , info->cores_nr );
[204]	1067	/////////////////////////////////////////////////////////////////////////////////
[188]	1068
	1069	if( (core_lid == 0) && (local_cxy == 0) )
[296]	1070	kinit_dmsg("\n[INFO] %s : exit barrier 8 : process init created / cycle %d\n",
	1071	__FUNCTION__ , hal_time_stamp() );
[188]	1072
	1073	/////////////////////////////////////////////////////////////////////////////////
	1074	// STEP 9 : CP0 in cluster 0 print banner
	1075	/////////////////////////////////////////////////////////////////////////////////
	1076
	1077	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1078	{
[5]	1079	print_banner( (info->x_size * info->y_size) , info->cores_nr );
[68]	1080
[279]	1081	kinit_dmsg("\n\n* memory fooprint for main kernet objects *\n\n"
[68]	1082	" - thread descriptor : %d bytes\n"
	1083	" - process descriptor : %d bytes\n"
	1084	" - cluster manager : %d bytes\n"
	1085	" - chdev descriptor : %d bytes\n"
	1086	" - core descriptor : %d bytes\n"
	1087	" - scheduler : %d bytes\n"
	1088	" - rpc fifo : %d bytes\n"
	1089	" - page descriptor : %d bytes\n"
	1090	" - mapper root : %d bytes\n"
	1091	" - ppm manager : %d bytes\n"
	1092	" - kcm manager : %d bytes\n"
	1093	" - khm manager : %d bytes\n"
	1094	" - vmm manager : %d bytes\n"
	1095	" - gpt root : %d bytes\n"
	1096	" - list item : %d bytes\n"
	1097	" - xlist item : %d bytes\n"
	1098	" - spinlock : %d bytes\n"
	1099	" - remote spinlock : %d bytes\n"
	1100	" - rwlock : %d bytes\n"
	1101	" - remote rwlock : %d bytes\n",
[127]	1102	sizeof( thread_t ),
[68]	1103	sizeof( process_t ),
	1104	sizeof( cluster_t ),
	1105	sizeof( chdev_t ),
	1106	sizeof( core_t ),
	1107	sizeof( scheduler_t ),
	1108	sizeof( rpc_fifo_t ),
	1109	sizeof( page_t ),
	1110	sizeof( mapper_t ),
	1111	sizeof( ppm_t ),
	1112	sizeof( kcm_t ),
	1113	sizeof( khm_t ),
	1114	sizeof( vmm_t ),
	1115	sizeof( gpt_t ),
	1116	sizeof( list_entry_t ),
	1117	sizeof( xlist_entry_t ),
	1118	sizeof( spinlock_t ),
	1119	sizeof( remote_spinlock_t ),
	1120	sizeof( rwlock_t ),
	1121	sizeof( remote_rwlock_t ));
[1]	1122	}
	1123
[279]	1124	// each core activates its private TICK IRQ
[188]	1125	dev_pic_enable_timer( CONFIG_SCHED_TICK_PERIOD );
[14]	1126
	1127	// each core jump to idle thread
[50]	1128	thread_idle_func();
[127]	1129	}
[14]	1130

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