Context Navigation

source: trunk/kernel/kern/kernel_init.c @ 453

Last change on this file since 453 was 443, checked in by alain, 7 years ago
Fix few bugs whike debugging the sort multi-thread application.
File size: 53.8 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>
[407]	34	#include <remote_fifo.h>
[1]	35	#include <core.h>
	36	#include <list.h>
[68]	37	#include <xlist.h>
[204]	38	#include <xhtab.h>
[1]	39	#include <thread.h>
	40	#include <scheduler.h>
	41	#include <kmem.h>
	42	#include <cluster.h>
	43	#include <string.h>
	44	#include <memcpy.h>
	45	#include <ppm.h>
	46	#include <page.h>
[5]	47	#include <chdev.h>
[1]	48	#include <boot_info.h>
	49	#include <dqdt.h>
	50	#include <dev_mmc.h>
[5]	51	#include <dev_dma.h>
	52	#include <dev_iob.h>
[1]	53	#include <dev_ioc.h>
[5]	54	#include <dev_txt.h>
[1]	55	#include <dev_pic.h>
	56	#include <printk.h>
	57	#include <vfs.h>
[23]	58	#include <devfs.h>
[68]	59	#include <mapper.h>
[1]	60
	61	///////////////////////////////////////////////////////////////////////////////////////////
[279]	62	// All the following global variables are replicated in all clusters.
[1]	63	// They are initialised by the kernel_init() function.
[14]	64	//
[127]	65	// WARNING : The section names have been defined to control the base addresses of the
[14]	66	// boot_info structure and the idle thread descriptors, through the kernel.ld script:
[127]	67	// - the boot_info structure is built by the bootloader, and used by kernel_init.
	68	// it must be the first object in the kdata segment.
[14]	69	// - the array of idle threads descriptors must be placed on the first page boundary after
	70	// the boot_info structure in the kdata segment.
[1]	71	///////////////////////////////////////////////////////////////////////////////////////////
	72
[5]	73	// This variable defines the local boot_info structure
	74	__attribute__((section(".kinfo")))
[14]	75	boot_info_t boot_info;
[5]	76
[14]	77	// This variable defines the "idle" threads descriptors array
	78	__attribute__((section(".kidle")))
[381]	79	char idle_threads[CONFIG_THREAD_DESC_SIZE *
[14]	80	CONFIG_MAX_LOCAL_CORES] CONFIG_PPM_PAGE_ALIGNED;
	81
[127]	82	// This variable defines the local cluster manager
[5]	83	__attribute__((section(".kdata")))
[19]	84	cluster_t cluster_manager CONFIG_CACHE_LINE_ALIGNED;
[1]	85
[407]	86	// This variable defines the TXT0 kernel terminal (TX only)
[188]	87	__attribute__((section(".kdata")))
	88	chdev_t txt0_chdev CONFIG_CACHE_LINE_ALIGNED;
	89
[14]	90	// This variables define the kernel process0 descriptor
[5]	91	__attribute__((section(".kdata")))
[19]	92	process_t process_zero CONFIG_CACHE_LINE_ALIGNED;
[1]	93
[14]	94	// This variable defines extended pointers on the distributed chdevs
[5]	95	__attribute__((section(".kdata")))
[14]	96	chdev_directory_t chdev_dir CONFIG_CACHE_LINE_ALIGNED;
[1]	97
[188]	98	// This variable contains the input IRQ indexes for the IOPIC controller
[5]	99	__attribute__((section(".kdata")))
[246]	100	iopic_input_t iopic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	101
[188]	102	// This variable contains the input IRQ indexes for the LAPIC controller
[5]	103	__attribute__((section(".kdata")))
[188]	104	lapic_input_t lapic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	105
[14]	106	// This variable defines the local cluster identifier
[5]	107	__attribute__((section(".kdata")))
[14]	108	cxy_t local_cxy CONFIG_CACHE_LINE_ALIGNED;
[5]	109
[127]	110	// This variable is used for CP0 cores synchronisation in kernel_init()
[5]	111	__attribute__((section(".kdata")))
[14]	112	remote_barrier_t global_barrier CONFIG_CACHE_LINE_ALIGNED;
[1]	113
[127]	114	// This variable is used for local cores synchronisation in kernel_init()
[14]	115	__attribute__((section(".kdata")))
	116	barrier_t local_barrier CONFIG_CACHE_LINE_ALIGNED;
	117
[127]	118	// This variable defines the array of supported File System contexts
[50]	119	__attribute__((section(".kdata")))
	120	vfs_ctx_t fs_context[FS_TYPES_NR] CONFIG_CACHE_LINE_ALIGNED;
	121
	122
[435]	123	// these debug variables are used to analyse the sys_read() syscall timing
[408]	124
[438]	125	#if DEBUG_SYS_READ
[407]	126	uint32_t enter_sys_read;
	127	uint32_t exit_sys_read;
	128
[435]	129	uint32_t enter_devfs_read;
	130	uint32_t exit_devfs_read;
[407]	131
	132	uint32_t enter_txt_read;
	133	uint32_t exit_txt_read;
	134
[435]	135	uint32_t enter_chdev_cmd_read;
	136	uint32_t exit_chdev_cmd_read;
[407]	137
[435]	138	uint32_t enter_chdev_server_read;
	139	uint32_t exit_chdev_server_read;
[407]	140
[435]	141	uint32_t enter_tty_cmd_read;
	142	uint32_t exit_tty_cmd_read;
[407]	143
[435]	144	uint32_t enter_tty_isr_read;
	145	uint32_t exit_tty_isr_read;
[407]	146	#endif
	147
[435]	148	// these debug variables are used to analyse the sys_write() syscall timing
	149
[438]	150	#if DEBUG_SYS_WRITE
[435]	151	uint32_t enter_sys_write;
	152	uint32_t exit_sys_write;
	153
	154	uint32_t enter_devfs_write;
	155	uint32_t exit_devfs_write;
	156
	157	uint32_t enter_txt_write;
	158	uint32_t exit_txt_write;
	159
	160	uint32_t enter_chdev_cmd_write;
	161	uint32_t exit_chdev_cmd_write;
	162
	163	uint32_t enter_chdev_server_write;
	164	uint32_t exit_chdev_server_write;
	165
	166	uint32_t enter_tty_cmd_write;
	167	uint32_t exit_tty_cmd_write;
	168
	169	uint32_t enter_tty_isr_write;
	170	uint32_t exit_tty_isr_write;
	171	#endif
	172
[1]	173	///////////////////////////////////////////////////////////////////////////////////////////
[5]	174	// This function displays the ALMOS_MKH banner.
[1]	175	///////////////////////////////////////////////////////////////////////////////////////////
[5]	176	static void print_banner( uint32_t nclusters , uint32_t ncores )
[127]	177	{
[5]	178	printk("\n"
	179	" _ __ __ _____ ______ __ __ _ __ _ _ \n"
	180	" /\\ \| \| \| \\ / \| / ___ \\ / _____\| \| \\ / \| \| \| / / \| \| \| \| \n"
	181	" / \\ \| \| \| \\/ \| \| / \\ \| \| / \| \\/ \| \| \|/ / \| \| \| \| \n"
	182	" / /\\ \\ \| \| \| \|\\ /\| \| \| \| \| \| \| \|_____ ___ \| \|\\ /\| \| \| / \| \|___\| \| \n"
	183	" / /__\\ \\ \| \| \| \| \\/ \| \| \| \| \| \| \\_____ \\ \|___\| \| \| \\/ \| \| \| \\ \| ___ \| \n"
	184	" / ______ \\ \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|\\ \\ \| \| \| \| \n"
	185	" / / \\ \\ \| \|____ \| \| \| \| \| \\___/ \| _____/ \| \| \| \| \| \| \| \\ \\ \| \| \| \| \n"
	186	" /_/ \\_\\ \|______\| \|_\| \|_\| \\_____/ \|______/ \|_\| \|_\| \|_\| \\_\\ \|_\| \|_\| \n"
	187	"\n\n\t\t Advanced Locality Management Operating System / Multi Kernel Hybrid\n"
[407]	188	"\n\n\t\t Version 0.0 / %d cluster(s) / %d core(s) per cluster / cycle %d\n\n",
	189	nclusters , ncores , hal_time_stamp() );
[5]	190	}
[1]	191
	192
[5]	193	///////////////////////////////////////////////////////////////////////////////////////////
[188]	194	// This function initializes the TXT0 chdev descriptor, that is the "kernel terminal",
	195	// shared by all kernel instances for debug messages.
	196	// It is a global variable (replicated in all clusters), because this terminal is used
	197	// before the kmem allocator initialisation, but only the instance in cluster containing
	198	// the calling core is registered in the "chdev_dir" directory.
[127]	199	// As this TXT0 chdev supports only the TXT_SYNC_WRITE command, we don't create
	200	// a server thread, we don't allocate a WTI, and we don't initialize the waiting queue.
[5]	201	///////////////////////////////////////////////////////////////////////////////////////////
	202	// @ info : pointer on the local boot-info structure.
	203	///////////////////////////////////////////////////////////////////////////////////////////
	204	static void txt0_device_init( boot_info_t * info )
	205	{
	206	boot_device_t * dev_tbl; // pointer on array of devices in boot_info
[127]	207	uint32_t dev_nr; // actual number of devices in this cluster
	208	xptr_t base; // remote pointer on segment base
	209	uint32_t func; // device functional index
[5]	210	uint32_t impl; // device implementation index
[127]	211	uint32_t i; // device index in dev_tbl
	212	uint32_t x; // X cluster coordinate
	213	uint32_t y; // Y cluster coordinate
[188]	214	uint32_t channels; // number of channels
[1]	215
[5]	216	// get number of peripherals and base of devices array from boot_info
[127]	217	dev_nr = info->ext_dev_nr;
[5]	218	dev_tbl = info->ext_dev;
[1]	219
[14]	220	// loop on external peripherals to find TXT device
[127]	221	for( i = 0 ; i < dev_nr ; i++ )
	222	{
[5]	223	base = dev_tbl[i].base;
[188]	224	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	225	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	226	channels = dev_tbl[i].channels;
[5]	227
[127]	228	if (func == DEV_FUNC_TXT )
[5]	229	{
[428]	230	assert( (channels > 0) , __FUNCTION__ , "number of TXT channels cannot be 0\n");
[5]	231
[428]	232	// initializes TXT_TX[0] chdev
[188]	233	txt0_chdev.func = func;
	234	txt0_chdev.impl = impl;
	235	txt0_chdev.channel = 0;
	236	txt0_chdev.base = base;
	237	txt0_chdev.is_rx = false;
	238
	239	// initializes lock
[14]	240	remote_spinlock_init( XPTR( local_cxy , &txt0_chdev.wait_lock ) );
[188]	241
	242	// TXT specific initialisation:
	243	// no server thread & no IRQ routing for channel 0
	244	dev_txt_init( &txt0_chdev );
[14]	245
[188]	246	// register the TXT0 in all chdev_dir[x][y] structures
[5]	247	for( x = 0 ; x < info->x_size ; x++ )
	248	{
	249	for( y = 0 ; y < info->y_size ; y++ )
	250	{
	251	cxy_t cxy = (x<<info->y_width) + y;
[407]	252	hal_remote_swd( XPTR( cxy , &chdev_dir.txt_tx[0] ) ,
[14]	253	XPTR( local_cxy , &txt0_chdev ) );
[5]	254	}
	255	}
	256	}
[188]	257	} // end loop on devices
	258	} // end txt0_device_init()
[5]	259
[1]	260	///////////////////////////////////////////////////////////////////////////////////////////
[188]	261	// This function allocates memory and initializes the chdev descriptors for the internal
	262	// peripherals contained in the local cluster, other than the LAPIC, as specified by
	263	// the boot_info, including the linking with the driver for the specified implementation.
	264	// The relevant entries in all copies of the devices directory are initialised.
[1]	265	///////////////////////////////////////////////////////////////////////////////////////////
	266	// @ info : pointer on the local boot-info structure.
	267	///////////////////////////////////////////////////////////////////////////////////////////
[5]	268	static void internal_devices_init( boot_info_t * info )
[1]	269	{
[188]	270	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
	271	uint32_t dev_nr; // actual number of devices in this cluster
	272	xptr_t base; // remote pointer on segment base
	273	uint32_t func; // device functionnal index
	274	uint32_t impl; // device implementation index
	275	uint32_t i; // device index in dev_tbl
	276	uint32_t x; // X cluster coordinate
	277	uint32_t y; // Y cluster coordinate
	278	uint32_t channels; // number of channels
	279	uint32_t channel; // channel index
	280	chdev_t * chdev_ptr; // local pointer on created chdev
[1]	281
[188]	282	// get number of internal peripherals and base from boot_info
	283	dev_nr = info->int_dev_nr;
	284	dev_tbl = info->int_dev;
[1]	285
[188]	286	// loop on internal peripherals
	287	for( i = 0 ; i < dev_nr ; i++ )
	288	{
	289	base = dev_tbl[i].base;
	290	channels = dev_tbl[i].channels;
	291	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	292	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[204]	293
[188]	294	//////////////////////////
	295	if( func == DEV_FUNC_MMC )
[5]	296	{
[188]	297	assert( (channels == 1) , __FUNCTION__ ,
	298	"MMC device must be single channel\n" );
[1]	299
[188]	300	// create chdev in local cluster
	301	chdev_ptr = chdev_create( func,
	302	impl,
	303	0, // channel
	304	false, // direction
	305	base );
[14]	306
[188]	307	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	308	"cannot allocate memory for MMC chdev\n" );
	309
	310	// make MMC specific initialisation
	311	dev_mmc_init( chdev_ptr );
[1]	312
[188]	313	// set the MMC field in all chdev_dir[x][y] structures
	314	for( x = 0 ; x < info->x_size ; x++ )
[1]	315	{
[188]	316	for( y = 0 ; y < info->y_size ; y++ )
	317	{
	318	cxy_t cxy = (x<<info->y_width) + y;
	319	hal_remote_swd( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
	320	XPTR( local_cxy , chdev_ptr ) );
	321	}
[1]	322	}
[188]	323
[438]	324	#if( DEBUG_KERNEL_INIT & 0x1 )
	325	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	326	printk("\n[DBG] %s : created MMC in cluster %x / chdev = %x\n",
	327	__FUNCTION__ , local_cxy , chdev_ptr );
[389]	328	#endif
[14]	329	}
[188]	330	///////////////////////////////
	331	else if( func == DEV_FUNC_DMA )
[127]	332	{
[188]	333	// create one chdev per channel in local cluster
	334	for( channel = 0 ; channel < channels ; channel++ )
	335	{
	336	// create chdev[channel] in local cluster
	337	chdev_ptr = chdev_create( func,
	338	impl,
	339	channel,
	340	false, // direction
	341	base );
[5]	342
[188]	343	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	344	"cannot allocate memory for DMA chdev" );
	345
	346	// make DMA specific initialisation
	347	dev_dma_init( chdev_ptr );
[127]	348
[188]	349	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
	350	// structure because the DMA device is not remotely accessible.
	351	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
[5]	352
[438]	353	#if( DEBUG_KERNEL_INIT & 0x1 )
	354	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	355	printk("\n[DBG] %s : created DMA[%d] in cluster %x / chdev = %x\n",
[389]	356	__FUNCTION__ , channel , local_cxy , chdev_ptr );
	357	#endif
[188]	358	}
[14]	359	}
[127]	360	}
[5]	361	} // end internal_devices_init()
	362
	363	///////////////////////////////////////////////////////////////////////////////////////////
[188]	364	// This function allocates memory and initializes the chdev descriptors for the
[408]	365	// external (shared) peripherals other than the IOPIC, as specified by the boot_info.
	366	// This includes the dynamic linking with the driver for the specified implementation.
[188]	367	// These chdev descriptors are distributed on all clusters, using a modulo on a global
[408]	368	// index, identically computed in all clusters.
	369	// This function is executed in all clusters by the CP0 core, that computes a global index
	370	// for all external chdevs. Each CP0 core creates only the chdevs that must be placed in
	371	// the local cluster, because the global index matches the local index.
[188]	372	// The relevant entries in all copies of the devices directory are initialised.
[5]	373	///////////////////////////////////////////////////////////////////////////////////////////
	374	// @ info : pointer on the local boot-info structure.
	375	///////////////////////////////////////////////////////////////////////////////////////////
	376	static void external_devices_init( boot_info_t * info )
	377	{
[188]	378	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
	379	uint32_t dev_nr; // actual number of external devices
	380	xptr_t base; // remote pointer on segment base
[5]	381	uint32_t func; // device functionnal index
	382	uint32_t impl; // device implementation index
[188]	383	uint32_t i; // device index in dev_tbl
	384	uint32_t x; // X cluster coordinate
	385	uint32_t y; // Y cluster coordinate
	386	uint32_t channels; // number of channels
	387	uint32_t channel; // channel index
	388	uint32_t directions; // number of directions (1 or 2)
	389	uint32_t rx; // direction index (0 or 1)
[127]	390	chdev_t * chdev; // local pointer on one channel_device descriptor
[188]	391	uint32_t ext_chdev_gid; // global index of external chdev
[5]	392
	393	// get number of peripherals and base of devices array from boot_info
[127]	394	dev_nr = info->ext_dev_nr;
[5]	395	dev_tbl = info->ext_dev;
	396
[188]	397	// initializes global index (PIC is already placed in cluster 0
	398	ext_chdev_gid = 1;
	399
[5]	400	// loop on external peripherals
[127]	401	for( i = 0 ; i < dev_nr ; i++ )
	402	{
[188]	403	base = dev_tbl[i].base;
	404	channels = dev_tbl[i].channels;
	405	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	406	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	407
[407]	408	// There is one chdev per direction for NIC and for TXT
	409	if((func == DEV_FUNC_NIC) \|\| (func == DEV_FUNC_TXT)) directions = 2;
	410	else directions = 1;
[5]	411
[407]	412	// do nothing for ROM, that does not require a device descriptor.
[5]	413	if( func == DEV_FUNC_ROM ) continue;
	414
[188]	415	// do nothing for PIC, that is already initialized
	416	if( func == DEV_FUNC_PIC ) continue;
[5]	417
[188]	418	// check PIC device initialized
	419	assert( (chdev_dir.pic != XPTR_NULL ) , __FUNCTION__ ,
	420	"PIC device must be initialized before other devices\n" );
	421
	422	// check external device functionnal type
	423	assert( ( (func == DEV_FUNC_IOB) \|\|
	424	(func == DEV_FUNC_IOC) \|\|
	425	(func == DEV_FUNC_TXT) \|\|
	426	(func == DEV_FUNC_NIC) \|\|
	427	(func == DEV_FUNC_FBF) ) , __FUNCTION__ ,
	428	"undefined external peripheral type\n" );
	429
[127]	430	// loops on channels
[428]	431	for( channel = 0 ; channel < channels ; channel++ )
[127]	432	{
[5]	433	// loop on directions
[188]	434	for( rx = 0 ; rx < directions ; rx++ )
[1]	435	{
[428]	436	// skip TXT_TX[0] chdev that has already been created & registered
	437	if( (func == DEV_FUNC_TXT) && (channel == 0) && (rx == 0) ) continue;
	438
[188]	439	// compute target cluster for chdev[func,channel,direction]
	440	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
[5]	441	uint32_t cx = offset / info->y_size;
	442	uint32_t cy = offset % info->y_size;
	443	uint32_t target_cxy = (cx<<info->y_width) + cy;
[1]	444
[5]	445	// allocate and initialize a local chdev
[407]	446	// when local cluster matches target cluster
[5]	447	if( target_cxy == local_cxy )
[1]	448	{
[5]	449	chdev = chdev_create( func,
	450	impl,
	451	channel,
[188]	452	rx, // direction
[5]	453	base );
	454
[127]	455	assert( (chdev != NULL), __FUNCTION__ ,
[5]	456	"cannot allocate external device" );
	457
	458	// make device type specific initialisation
	459	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
	460	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
	461	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
	462	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
[188]	463	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
[5]	464
[127]	465	// all external (shared) devices are remotely accessible
[5]	466	// initialize the replicated chdev_dir[x][y] structures
[127]	467	// defining the extended pointers on chdev descriptors
	468	xptr_t * entry;
	469
[188]	470	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
	471	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
	472	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
[407]	473	if((func==DEV_FUNC_TXT) && (rx==0)) entry = &chdev_dir.txt_tx[channel];
	474	if((func==DEV_FUNC_TXT) && (rx==1)) entry = &chdev_dir.txt_rx[channel];
[188]	475	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
	476	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
[127]	477
[1]	478	for( x = 0 ; x < info->x_size ; x++ )
	479	{
	480	for( y = 0 ; y < info->y_size ; y++ )
	481	{
	482	cxy_t cxy = (x<<info->y_width) + y;
[188]	483	hal_remote_swd( XPTR( cxy , entry ),
	484	XPTR( local_cxy , chdev ) );
[5]	485	}
[1]	486	}
	487
[438]	488	#if( DEBUG_KERNEL_INIT & 0x1 )
	489	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	490	printk("\n[DBG] %s : create chdev %s / channel = %d / rx = %d / cluster %x / chdev = %x\n",
	491	__FUNCTION__ , chdev_func_str( func ), channel , rx , local_cxy , chdev );
[389]	492	#endif
[5]	493	} // end if match
	494
[19]	495	// increment chdev global index (matching or not)
[188]	496	ext_chdev_gid++;
[5]	497
	498	} // end loop on directions
	499	} // end loop on channels
[188]	500	} // end loop on devices
	501	} // end external_devices_init()
[5]	502
[188]	503	///////////////////////////////////////////////////////////////////////////////////////////
	504	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
[407]	505	// device, namely the informations attached to the external IOPIC controller, that
	506	// must be replicated in all clusters (struct iopic_input).
[188]	507	// This initialisation must be done before other devices initialisation because the IRQ
[407]	508	// routing infrastructure is required for both internal and external devices init.
[188]	509	///////////////////////////////////////////////////////////////////////////////////////////
	510	// @ info : pointer on the local boot-info structure.
	511	///////////////////////////////////////////////////////////////////////////////////////////
	512	static void iopic_init( boot_info_t * info )
	513	{
	514	boot_device_t * dev_tbl; // pointer on boot_info external devices array
	515	uint32_t dev_nr; // actual number of external devices
	516	xptr_t base; // remote pointer on segment base
	517	uint32_t func; // device functionnal index
	518	uint32_t impl; // device implementation index
	519	uint32_t i; // device index in dev_tbl
	520	uint32_t x; // cluster X coordinate
	521	uint32_t y; // cluster Y coordinate
	522	bool_t found; // IOPIC found
	523	chdev_t * chdev; // pointer on PIC chdev descriptor
	524
	525	// get number of external peripherals and base of array from boot_info
	526	dev_nr = info->ext_dev_nr;
	527	dev_tbl = info->ext_dev;
	528
	529	// loop on external peripherals to get the IOPIC
	530	for( i = 0 , found = false ; i < dev_nr ; i++ )
	531	{
	532	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	533
[127]	534	if( func == DEV_FUNC_PIC )
[1]	535	{
[188]	536	base = dev_tbl[i].base;
	537	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	538	found = true;
	539	break;
	540	}
	541	}
[5]	542
[188]	543	assert( found , __FUNCTION__ , "PIC device not found\n" );
[1]	544
[407]	545	// allocate and initialize the PIC chdev in cluster 0
	546	chdev = chdev_create( DEV_FUNC_PIC,
[188]	547	impl,
	548	0, // channel
	549	0, // direction,
	550	base );
[5]	551
[188]	552	assert( (chdev != NULL), __FUNCTION__ , "no memory for PIC chdev\n" );
[5]	553
[188]	554	// make PIC device type specific initialisation
	555	dev_pic_init( chdev );
[1]	556
[407]	557	// register, in all clusters, the extended pointer
	558	// on PIC chdev in "chdev_dir" array
[188]	559	xptr_t * entry = &chdev_dir.pic;
	560
	561	for( x = 0 ; x < info->x_size ; x++ )
	562	{
	563	for( y = 0 ; y < info->y_size ; y++ )
	564	{
	565	cxy_t cxy = (x<<info->y_width) + y;
	566	hal_remote_swd( XPTR( cxy , entry ) ,
	567	XPTR( local_cxy , chdev ) );
	568	}
	569	}
[1]	570
[407]	571	// initialize, in all clusters, the "iopic_input" structure
[188]	572	// defining how external IRQs are connected to IOPIC
	573
[407]	574	// register default value for unused inputs
	575	for( x = 0 ; x < info->x_size ; x++ )
	576	{
	577	for( y = 0 ; y < info->y_size ; y++ )
	578	{
	579	cxy_t cxy = (x<<info->y_width) + y;
	580	hal_remote_memset( XPTR( cxy , &iopic_input ) , 0xFF , sizeof(iopic_input_t) );
	581	}
	582	}
	583
	584	// register input IRQ index for valid inputs
	585	uint32_t id; // input IRQ index
	586	uint8_t valid; // input IRQ is connected
	587	uint32_t type; // source device type
	588	uint8_t channel; // source device channel
	589	uint8_t is_rx; // source device direction
	590	uint32_t * ptr; // local pointer on one field in iopic_input stucture
	591
[188]	592	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
	593	{
	594	valid = dev_tbl[i].irq[id].valid;
	595	type = dev_tbl[i].irq[id].dev_type;
	596	channel = dev_tbl[i].irq[id].channel;
	597	is_rx = dev_tbl[i].irq[id].is_rx;
[407]	598	func = FUNC_FROM_TYPE( type );
[188]	599
[407]	600	// get pointer on relevant field in iopic_input
	601	if( valid )
[188]	602	{
[407]	603	if ( func == DEV_FUNC_IOC ) ptr = &iopic_input.ioc[channel];
	604	else if((func == DEV_FUNC_TXT) && (is_rx == 0)) ptr = &iopic_input.txt_tx[channel];
	605	else if((func == DEV_FUNC_TXT) && (is_rx != 0)) ptr = &iopic_input.txt_rx[channel];
	606	else if((func == DEV_FUNC_NIC) && (is_rx == 0)) ptr = &iopic_input.nic_tx[channel];
	607	else if((func == DEV_FUNC_NIC) && (is_rx != 0)) ptr = &iopic_input.nic_rx[channel];
	608	else if( func == DEV_FUNC_IOB ) ptr = &iopic_input.iob;
[428]	609	else assert( false , __FUNCTION__ , "illegal source device for IOPIC input" );
[188]	610
[407]	611	// set one entry in all "iopic_input" structures
	612	for( x = 0 ; x < info->x_size ; x++ )
	613	{
	614	for( y = 0 ; y < info->y_size ; y++ )
	615	{
	616	cxy_t cxy = (x<<info->y_width) + y;
	617	hal_remote_swd( XPTR( cxy , ptr ) , id );
	618	}
	619	}
[188]	620	}
	621	}
	622
[438]	623	#if( DEBUG_KERNEL_INIT & 0x1 )
	624	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	625	{
	626	printk("\n[DBG] %s created PIC chdev in cluster %x at cycle %d\n",
	627	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
	628	dev_pic_inputs_display();
	629	}
[389]	630	#endif
[188]	631
	632	} // end iopic_init()
	633
[1]	634	///////////////////////////////////////////////////////////////////////////////////////////
[188]	635	// This function is called by all CP0s in all cluster to complete the PIC device
	636	// initialisation, namely the informations attached to the LAPIC controller.
	637	// This initialisation must be done after the IOPIC initialisation, but before other
	638	// devices initialisation because the IRQ routing infrastructure is required for both
	639	// internal and external devices initialisation.
	640	///////////////////////////////////////////////////////////////////////////////////////////
	641	// @ info : pointer on the local boot-info structure.
	642	///////////////////////////////////////////////////////////////////////////////////////////
	643	static void lapic_init( boot_info_t * info )
	644	{
	645	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
	646	uint32_t dev_nr; // number of internal devices
	647	uint32_t i; // device index in dev_tbl
	648	xptr_t base; // remote pointer on segment base
	649	uint32_t func; // device functionnal type in boot_info
	650	bool_t found; // LAPIC found
	651
	652	// get number of internal peripherals and base
	653	dev_nr = info->int_dev_nr;
	654	dev_tbl = info->int_dev;
	655
	656	// loop on internal peripherals to get the lapic device
	657	for( i = 0 , found = false ; i < dev_nr ; i++ )
	658	{
	659	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	660
	661	if( func == DEV_FUNC_ICU )
	662	{
	663	base = dev_tbl[i].base;
	664	found = true;
	665	break;
	666	}
	667	}
	668
	669	// if the LAPIC controller is not defined in the boot_info,
	670	// we simply don't initialize the PIC extensions in the kernel,
	671	// making the assumption that the LAPIC related informations
	672	// are hidden in the hardware specific PIC driver.
	673	if( found )
	674	{
	675	// initialise the PIC extensions for
	676	// the core descriptor and core manager extensions
	677	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
	678
	679	// initialize the "lapic_input" structure
	680	// defining how internal IRQs are connected to LAPIC
	681	uint32_t id;
	682	uint8_t valid;
	683	uint8_t channel;
	684	uint32_t func;
	685
	686	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
	687	{
	688	valid = dev_tbl[i].irq[id].valid;
	689	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
	690	channel = dev_tbl[i].irq[id].channel;
	691
	692	if( valid ) // only valid local IRQs are registered
	693	{
	694	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
	695	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
	696	else assert( false , __FUNCTION__ , "illegal source device for LAPIC input" );
	697	}
	698	}
	699	}
	700	} // end lapic_init()
	701
	702	///////////////////////////////////////////////////////////////////////////////////////////
[14]	703	// This static function returns the identifiers of the calling core.
	704	///////////////////////////////////////////////////////////////////////////////////////////
	705	// @ info : pointer on boot_info structure.
	706	// @ lid : [out] core local index in cluster.
	707	// @ cxy : [out] cluster identifier.
	708	// @ lid : [out] core global identifier (hardware).
	709	// @ return 0 if success / return EINVAL if not found.
	710	///////////////////////////////////////////////////////////////////////////////////////////
[23]	711	static error_t get_core_identifiers( boot_info_t * info,
	712	lid_t * lid,
[14]	713	cxy_t * cxy,
	714	gid_t * gid )
	715	{
[127]	716	uint32_t i;
[14]	717	gid_t global_id;
[19]	718
[14]	719	// get global identifier from hardware register
[127]	720	global_id = hal_get_gid();
[14]	721
	722	// makes an associative search in boot_info to get (cxy,lid) from global_id
	723	for( i = 0 ; i < info->cores_nr ; i++ )
	724	{
	725	if( global_id == info->core[i].gid )
	726	{
	727	*lid = info->core[i].lid;
	728	*cxy = info->core[i].cxy;
	729	*gid = global_id;
	730	return 0;
	731	}
	732	}
	733	return EINVAL;
[19]	734	}
[14]	735
	736	///////////////////////////////////////////////////////////////////////////////////////////
[1]	737	// This function is the entry point for the kernel initialisation.
[19]	738	// It is executed by all cores in all clusters, but only core[0], called CP0,
[14]	739	// initializes the shared resources such as the cluster manager, or the local peripherals.
[19]	740	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
	741	// only information contained in the local boot_info_t structure, set by the bootloader.
[103]	742	// Only CP0 in cluster 0 print the log messages.
[1]	743	///////////////////////////////////////////////////////////////////////////////////////////
	744	// @ info : pointer on the local boot-info structure.
	745	///////////////////////////////////////////////////////////////////////////////////////////
	746	void kernel_init( boot_info_t * info )
	747	{
[204]	748	lid_t core_lid = -1; // running core local index
	749	cxy_t core_cxy = -1; // running core cluster identifier
	750	gid_t core_gid; // running core hardware identifier
	751	cluster_t * cluster; // pointer on local cluster manager
	752	core_t * core; // pointer on running core descriptor
	753	thread_t * thread; // pointer on idle thread descriptor
	754
	755	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
	756	xptr_t devfs_dev_inode_xp; // extended pointer on DEVFS dev inode
	757	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external inode
	758	xptr_t devfs_internal_inode_xp; // extended pointer on DEVFS internal inode
	759
[1]	760	error_t error;
[285]	761	reg_t status; // running core status register
[1]	762
[188]	763	cxy_t io_cxy = info->io_cxy;
	764
[381]	765	assert( (io_cxy == ((info->x_size - 1)<<(info->y_width)) + (info->y_size - 1)) ,
	766	__FUNCTION__ , "illegal IO cluter identifier\n" );
	767
[188]	768	/////////////////////////////////////////////////////////////////////////////////
	769	// STEP 0 : Each core get its core identifier from boot_info, and makes
	770	// a partial initialisation of its private idle thread descriptor.
	771	// CP0 initializes the "local_cxy" global variable.
	772	// CP0 in cluster IO initializes the TXT0 chdev to print log messages.
	773	/////////////////////////////////////////////////////////////////////////////////
	774
[23]	775	error = get_core_identifiers( info,
[14]	776	&core_lid,
	777	&core_cxy,
	778	&core_gid );
[1]	779
[127]	780	// CP0 initializes cluster identifier
[14]	781	if( core_lid == 0 ) local_cxy = info->cxy;
[1]	782
[127]	783	// each core gets a pointer on its private idle thread descriptor
	784	thread = (thread_t )( idle_threads + (core_lid CONFIG_THREAD_DESC_SIZE) );
[68]	785
[127]	786	// each core registers this thread pointer in hardware register
[68]	787	hal_set_current_thread( thread );
[71]	788
[407]	789	// each core register core descriptor pointer in idle thread descriptor
	790	thread->core = &LOCAL_CLUSTER->core_tbl[core_lid];
	791
[437]	792	// each core initializes the idle thread lists of locks
[124]	793	list_root_init( &thread->locks_root );
[188]	794	xlist_root_init( XPTR( local_cxy , &thread->xlocks_root ) );
[437]	795	thread->local_locks = 0;
	796	thread->remote_locks = 0;
[124]	797
[188]	798	// CP0 in I/O cluster initialises TXT0 chdev descriptor
	799	if( (core_lid == 0) && (core_cxy == io_cxy) ) txt0_device_init( info );
[14]	800
	801	/////////////////////////////////////////////////////////////////////////////////
[188]	802	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[14]	803	(info->x_size * info->y_size) );
	804	barrier_wait( &local_barrier , info->cores_nr );
[437]	805	/////////////////////////////////////////////////////////////////////////////////
[14]	806
[438]	807	#if DEBUG_KERNEL_INIT
	808	if( (core_lid == 0) & (local_cxy == 0) )
[437]	809	printk("\n[DBG] %s : exit barrier 0 : TXT0 initialized / cycle %d\n",
	810	__FUNCTION__, (uint32_t)hal_get_cycles() );
	811	#endif
[14]	812
[188]	813	/////////////////////////////////////////////////////////////////////////////
[407]	814	// STEP 1 : all cores check core identifier.
[188]	815	// CP0 initializes the local cluster manager.
	816	// This includes the memory allocators.
	817	/////////////////////////////////////////////////////////////////////////////
	818
	819	// all cores check identifiers
[14]	820	if( error )
[1]	821	{
[428]	822	assert( false , __FUNCTION__ ,
	823	"illegal core identifiers gid = %x / cxy = %x / lid = %d",
	824	core_lid , core_cxy , core_lid );
[1]	825	}
	826
[188]	827	// CP0 initializes cluster manager
[14]	828	if( core_lid == 0 )
[1]	829	{
	830	error = cluster_init( info );
	831
[14]	832	if( error )
	833	{
[428]	834	assert( false , __FUNCTION__ ,
	835	"cannot initialise cluster %x", local_cxy );
[14]	836	}
	837	}
[5]	838
[14]	839	/////////////////////////////////////////////////////////////////////////////////
[188]	840	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[14]	841	(info->x_size * info->y_size) );
	842	barrier_wait( &local_barrier , info->cores_nr );
	843	/////////////////////////////////////////////////////////////////////////////////
[1]	844
[438]	845	#if DEBUG_KERNEL_INIT
	846	if( (core_lid == 0) & (local_cxy == 0) )
[437]	847	printk("\n[DBG] %s : exit barrier 1 : clusters initialised / cycle %d\n",
	848	__FUNCTION__, (uint32_t)hal_get_cycles() );
	849	#endif
[1]	850
[188]	851	/////////////////////////////////////////////////////////////////////////////////
[407]	852	// STEP 2 : CP0 initializes the process_zero descriptor.
[296]	853	// CP0 in cluster 0 initializes the IOPIC device.
[188]	854	/////////////////////////////////////////////////////////////////////////////////
	855
	856	// all cores get pointer on local cluster manager & core descriptor
[14]	857	cluster = &cluster_manager;
[127]	858	core = &cluster->core_tbl[core_lid];
[1]	859
[188]	860	// all CP0s initialize the process_zero descriptor
[428]	861	if( core_lid == 0 ) process_zero_create( &process_zero );
[5]	862
[188]	863	// CP0 in cluster 0 initializes the PIC chdev,
	864	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
	865
	866	////////////////////////////////////////////////////////////////////////////////
	867	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	868	(info->x_size * info->y_size) );
	869	barrier_wait( &local_barrier , info->cores_nr );
	870	////////////////////////////////////////////////////////////////////////////////
[127]	871
[438]	872	#if DEBUG_KERNEL_INIT
	873	if( (core_lid == 0) & (local_cxy == 0) )
[437]	874	printk("\n[DBG] %s : exit barrier 2 : PIC initialised / cycle %d\n",
	875	__FUNCTION__, (uint32_t)hal_get_cycles() );
	876	#endif
[1]	877
[188]	878	////////////////////////////////////////////////////////////////////////////////
[407]	879	// STEP 3 : CP0 initializes the distibuted LAPIC descriptor.
	880	// CP0 initializes the internal chdev descriptors
	881	// CP0 initialize the local external chdev descriptors
[188]	882	////////////////////////////////////////////////////////////////////////////////
[5]	883
[279]	884	// all CP0s initialize their local LAPIC extension,
	885	if( core_lid == 0 ) lapic_init( info );
	886
[188]	887	// CP0 scan the internal (private) peripherals,
	888	// and allocates memory for the corresponding chdev descriptors.
	889	if( core_lid == 0 ) internal_devices_init( info );
	890
[1]	891
[50]	892	// All CP0s contribute to initialise external peripheral chdev descriptors.
[14]	893	// Each CP0[cxy] scan the set of external (shared) peripherals (but the TXT0),
	894	// and allocates memory for the chdev descriptors that must be placed
[127]	895	// on the (cxy) cluster according to the global index value.
[188]	896
[14]	897	if( core_lid == 0 ) external_devices_init( info );
[1]	898
[14]	899	/////////////////////////////////////////////////////////////////////////////////
[188]	900	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[14]	901	(info->x_size * info->y_size) );
	902	barrier_wait( &local_barrier , info->cores_nr );
	903	/////////////////////////////////////////////////////////////////////////////////
[5]	904
[438]	905	#if DEBUG_KERNEL_INIT
	906	if( (core_lid == 0) & (local_cxy == 0) )
[437]	907	printk("\n[DBG] %s : exit barrier 3 : all chdev initialised / cycle %d\n",
	908	__FUNCTION__, (uint32_t)hal_get_cycles() );
	909	#endif
[1]	910
[438]	911	#if( DEBUG_KERNEL_INIT & 1 )
[443]	912	if( (core_lid == 0) & (local_cxy == 0) )
[437]	913	chdev_dir_display();
	914	#endif
	915
[188]	916	/////////////////////////////////////////////////////////////////////////////////
[279]	917	// STEP 4 : All cores enable IPI (Inter Procesor Interrupt),
	918	// Alh cores initialize IDLE thread.
[188]	919	// Only CP0 in cluster 0 creates the VFS root inode.
	920	// It access the boot device to initialize the file system context.
	921	/////////////////////////////////////////////////////////////////////////////////
	922
[279]	923	// All cores enable the shared IPI channel
	924	dev_pic_enable_ipi();
	925	hal_enable_irq( &status );
	926
[296]	927	// all cores initialize the idle thread descriptor
[438]	928	error = thread_idle_init( thread,
	929	THREAD_IDLE,
	930	&thread_idle_func,
	931	NULL,
	932	core_lid );
[14]	933	if( error )
[1]	934	{
[428]	935	assert( false , __FUNCTION__ ,
	936	"core[%x][%d] cannot initialize idle thread", local_cxy , core_lid );
[1]	937	}
	938
[296]	939	// all cores unblock idle thread, and register it in scheduler
	940	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
[103]	941	core->scheduler.idle = thread;
[1]	942
[438]	943	#if( DEBUG_KERNEL_INIT & 1 )
[407]	944	sched_display( core_lid );
[389]	945	#endif
[14]	946
[188]	947	// CPO in cluster 0 creates the VFS root
	948	if( (core_lid == 0) && (local_cxy == 0 ) )
[14]	949	{
[188]	950	vfs_root_inode_xp = XPTR_NULL;
[23]	951
[188]	952	// File System must be FATFS in this implementation,
	953	// but other File System can be introduced here
[23]	954	if( CONFIG_VFS_ROOT_IS_FATFS )
	955	{
[389]	956	// 1. allocate memory for FATFS context in cluster 0
[188]	957	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	958
[279]	959	assert( (fatfs_ctx != NULL) , __FUNCTION__ ,
	960	"cannot create FATFS context in cluster 0\n" );
[188]	961
	962	// 2. access boot device to initialize FATFS context
	963	fatfs_ctx_init( fatfs_ctx );
	964
	965	// 3. get various informations from FATFS context
	966	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
	967	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
	968	fatfs_ctx->sectors_per_cluster;
	969	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
	970
	971	// 4. create VFS root inode in cluster 0
	972	error = vfs_inode_create( XPTR_NULL, // dentry_xp
	973	FS_TYPE_FATFS, // fs_type
	974	INODE_TYPE_DIR, // inode_type
	975	(void *)(intptr_t)root_dir_cluster, // extend
	976	0, // attr
	977	0, // rights
	978	0, // uid
	979	0, // gid
	980	&vfs_root_inode_xp ); // return
	981
[279]	982	assert( (error == 0) , __FUNCTION__ ,
	983	"cannot create VFS root inode\n" );
[188]	984
	985	// 5. initialize VFS context for FAT in cluster 0
	986	vfs_ctx_init( FS_TYPE_FATFS, // file system type
	987	0, // attributes
	988	total_clusters,
	989	cluster_size,
	990	vfs_root_inode_xp, // VFS root
	991	fatfs_ctx ); // extend
[389]	992
	993	// 6. check initialisation
	994	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	995	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
	996	__FUNCTION__ , "illegal value for FATFS context in cluster %x\n", local_cxy );
[23]	997	}
	998	else
	999	{
[428]	1000	assert( false , __FUNCTION__ ,
	1001	"root FS must be FATFS" );
[23]	1002	}
	1003
[389]	1004	// register VFS root inode in process_zero descriptor of cluster 0
[188]	1005	process_zero.vfs_root_xp = vfs_root_inode_xp;
	1006	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
	1007	}
	1008
	1009	/////////////////////////////////////////////////////////////////////////////////
	1010	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1011	(info->x_size * info->y_size) );
	1012	barrier_wait( &local_barrier , info->cores_nr );
	1013	/////////////////////////////////////////////////////////////////////////////////
	1014
[438]	1015	#if DEBUG_KERNEL_INIT
	1016	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1017	printk("\n[DBG] %s : exit barrier 4 : VFS_root = %l in cluster 0 / cycle %d\n",
	1018	__FUNCTION__, vfs_root_inode_xp , (uint32_t)hal_get_cycles());
	1019	#endif
[188]	1020
	1021	/////////////////////////////////////////////////////////////////////////////////
	1022	// STEP 5 : Other CP0s allocate memory for the selected FS context,
	1023	// and initialise both the local FS context and the local VFS context
	1024	// from values stored in cluster 0.
	1025	// They get the VFS root inode extended pointer from cluster 0.
	1026	/////////////////////////////////////////////////////////////////////////////////
	1027
	1028	if( (core_lid == 0) && (local_cxy != 0) )
	1029	{
	1030	// File System must be FATFS in this implementation,
	1031	// but other File System can be introduced here
	1032	if( CONFIG_VFS_ROOT_IS_FATFS )
[23]	1033	{
[389]	1034	// 1. allocate memory for local FATFS context
	1035	fatfs_ctx_t * local_fatfs_ctx = fatfs_ctx_alloc();
[188]	1036
[389]	1037	assert( (local_fatfs_ctx != NULL) , __FUNCTION__ ,
	1038	"cannot create FATFS context in cluster %x\n", local_cxy );
[188]	1039
[389]	1040	// 2. get local pointer on VFS context for FATFS
[188]	1041	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	1042
[389]	1043	// 3. get local pointer on FATFS context in cluster 0
	1044	fatfs_ctx_t * remote_fatfs_ctx = hal_remote_lpt( XPTR( 0 , &vfs_ctx->extend ) );
	1045
	1046	// 4. copy FATFS context from cluster 0 to local cluster
	1047	hal_remote_memcpy( XPTR( local_cxy , local_fatfs_ctx ),
	1048	XPTR( 0 , remote_fatfs_ctx ), sizeof(fatfs_ctx_t) );
	1049
	1050	// 5. copy VFS context from cluster 0 to local cluster
[188]	1051	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
[389]	1052	XPTR( 0 , vfs_ctx ), sizeof(vfs_ctx_t) );
[188]	1053
[389]	1054	// 6. update extend field in local copy of VFS context
	1055	vfs_ctx->extend = local_fatfs_ctx;
[188]	1056
[389]	1057	// 7. check initialisation
	1058	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
	1059	__FUNCTION__ , "illegal value for FATFS context in cluster %x\n", local_cxy );
[23]	1060	}
	1061
[188]	1062	// get extended pointer on VFS root inode from cluster 0
[296]	1063	vfs_root_inode_xp = hal_remote_lwd( XPTR( 0 , &process_zero.vfs_root_xp ) );
[101]	1064
[188]	1065	// update local process_zero descriptor
	1066	process_zero.vfs_root_xp = vfs_root_inode_xp;
	1067	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
[14]	1068	}
	1069
[188]	1070	/////////////////////////////////////////////////////////////////////////////////
	1071	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1072	(info->x_size * info->y_size) );
	1073	barrier_wait( &local_barrier , info->cores_nr );
[204]	1074	/////////////////////////////////////////////////////////////////////////////////
[101]	1075
[438]	1076	#if DEBUG_KERNEL_INIT
	1077	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1078	printk("\n[DBG] %s : exit barrier 5 : VFS_root = %l in cluster %x / cycle %d\n",
	1079	__FUNCTION__, vfs_root_inode_xp , io_cxy , (uint32_t)hal_get_cycles());
	1080	#endif
[188]	1081
	1082	/////////////////////////////////////////////////////////////////////////////////
	1083	// STEP 6 : CP0 in cluster IO makes the global DEVFS tree initialisation:
[204]	1084	// It creates the DEVFS directory "dev", and the DEVFS "external"
	1085	// directory in cluster IO and mount these inodes into VFS.
[188]	1086	/////////////////////////////////////////////////////////////////////////////////
	1087
	1088	if( (core_lid == 0) && (local_cxy == io_cxy) )
[1]	1089	{
[188]	1090	// create "dev" and "external" directories.
	1091	devfs_global_init( process_zero.vfs_root_xp,
[204]	1092	&devfs_dev_inode_xp,
[188]	1093	&devfs_external_inode_xp );
	1094
	1095	// creates the DEVFS context in cluster IO
	1096	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
	1097
[279]	1098	assert( (devfs_ctx != NULL) , __FUNCTION__ ,
	1099	"cannot create DEVFS context in cluster IO\n");
[188]	1100
	1101	// register DEVFS root and external directories
[204]	1102	devfs_ctx_init( devfs_ctx, devfs_dev_inode_xp, devfs_external_inode_xp );
[188]	1103	}
	1104
	1105	/////////////////////////////////////////////////////////////////////////////////
	1106	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1107	(info->x_size * info->y_size) );
	1108	barrier_wait( &local_barrier , info->cores_nr );
[204]	1109	/////////////////////////////////////////////////////////////////////////////////
[188]	1110
[438]	1111	#if DEBUG_KERNEL_INIT
	1112	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1113	printk("\n[DBG] %s : exit barrier 6 : dev_root = %l in cluster %x / cycle %d\n",
	1114	__FUNCTION__, devfs_dev_inode_xp , io_cxy , (uint32_t)hal_get_cycles() );
	1115	#endif
[188]	1116
	1117	/////////////////////////////////////////////////////////////////////////////////
	1118	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
	1119	// Each CP0 get the "dev" and "external" extended pointers from
[204]	1120	// values stored in cluster IO.
[337]	1121	// Then each CP0 in cluster(i) creates the DEVFS "internal directory,
[204]	1122	// and creates the pseudo-files for all chdevs in cluster (i).
[188]	1123	/////////////////////////////////////////////////////////////////////////////////
	1124
	1125	if( core_lid == 0 )
	1126	{
	1127	// get extended pointer on "extend" field of VFS context for DEVFS in cluster IO
	1128	xptr_t extend_xp = XPTR( io_cxy , &fs_context[FS_TYPE_DEVFS].extend );
	1129
	1130	// get pointer on DEVFS context in cluster IO
	1131	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
	1132
[204]	1133	devfs_dev_inode_xp = hal_remote_lwd( XPTR( io_cxy ,
	1134	&devfs_ctx->dev_inode_xp ) );
	1135	devfs_external_inode_xp = hal_remote_lwd( XPTR( io_cxy ,
	1136	&devfs_ctx->external_inode_xp ) );
[188]	1137
[204]	1138	// populate DEVFS in all clusters
	1139	devfs_local_init( devfs_dev_inode_xp,
	1140	devfs_external_inode_xp,
	1141	&devfs_internal_inode_xp );
[188]	1142	}
	1143
	1144	/////////////////////////////////////////////////////////////////////////////////
	1145	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
	1146	(info->x_size * info->y_size) );
	1147	barrier_wait( &local_barrier , info->cores_nr );
[204]	1148	/////////////////////////////////////////////////////////////////////////////////
[188]	1149
[438]	1150	#if DEBUG_KERNEL_INIT
	1151	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1152	printk("\n[DBG] %s : exit barrier 7 : dev_root = %l in cluster 0 / cycle %d\n",
	1153	__FUNCTION__, devfs_dev_inode_xp , (uint32_t)hal_get_cycles() );
	1154	#endif
[188]	1155
	1156	/////////////////////////////////////////////////////////////////////////////////
[428]	1157	// STEP 8 : CP0 in cluster 0 creates the first user process (process_init)
[188]	1158	/////////////////////////////////////////////////////////////////////////////////
	1159
[428]	1160	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1161	{
[428]	1162
[438]	1163	#if( DEBUG_KERNEL_INIT & 1 )
[428]	1164	vfs_display( vfs_root_inode_xp );
	1165	#endif
	1166
	1167	process_init_create();
[188]	1168	}
[101]	1169
[188]	1170	/////////////////////////////////////////////////////////////////////////////////
[381]	1171	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
[188]	1172	(info->x_size * info->y_size) );
	1173	barrier_wait( &local_barrier , info->cores_nr );
[204]	1174	/////////////////////////////////////////////////////////////////////////////////
[188]	1175
[438]	1176	#if DEBUG_KERNEL_INIT
	1177	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1178	printk("\n[DBG] %s : exit barrier 8 : process init created / cycle %d\n",
	1179	__FUNCTION__ , (uint32_t)hal_get_cycles() );
	1180	#endif
[188]	1181
[443]	1182	#if (DEBUG_KERNEL_INIT & 1)
	1183	if( (core_lid == 0) & (local_cxy == 0) )
	1184	sched_display( 0 );
	1185	#endif
	1186
[188]	1187	/////////////////////////////////////////////////////////////////////////////////
	1188	// STEP 9 : CP0 in cluster 0 print banner
	1189	/////////////////////////////////////////////////////////////////////////////////
	1190
	1191	if( (core_lid == 0) && (local_cxy == io_cxy) )
	1192	{
[5]	1193	print_banner( (info->x_size * info->y_size) , info->cores_nr );
[68]	1194
[438]	1195	#if( DEBUG_KERNEL_INIT & 1 )
[437]	1196	printk("\n\n***** memory fooprint for main kernel objects\n\n"
[68]	1197	" - thread descriptor : %d bytes\n"
	1198	" - process descriptor : %d bytes\n"
	1199	" - cluster manager : %d bytes\n"
	1200	" - chdev descriptor : %d bytes\n"
	1201	" - core descriptor : %d bytes\n"
	1202	" - scheduler : %d bytes\n"
	1203	" - rpc fifo : %d bytes\n"
	1204	" - page descriptor : %d bytes\n"
	1205	" - mapper root : %d bytes\n"
	1206	" - ppm manager : %d bytes\n"
	1207	" - kcm manager : %d bytes\n"
	1208	" - khm manager : %d bytes\n"
	1209	" - vmm manager : %d bytes\n"
	1210	" - gpt root : %d bytes\n"
	1211	" - list item : %d bytes\n"
	1212	" - xlist item : %d bytes\n"
	1213	" - spinlock : %d bytes\n"
	1214	" - remote spinlock : %d bytes\n"
	1215	" - rwlock : %d bytes\n"
	1216	" - remote rwlock : %d bytes\n",
[127]	1217	sizeof( thread_t ),
[68]	1218	sizeof( process_t ),
	1219	sizeof( cluster_t ),
	1220	sizeof( chdev_t ),
	1221	sizeof( core_t ),
	1222	sizeof( scheduler_t ),
[407]	1223	sizeof( remote_fifo_t ),
[68]	1224	sizeof( page_t ),
	1225	sizeof( mapper_t ),
	1226	sizeof( ppm_t ),
	1227	sizeof( kcm_t ),
	1228	sizeof( khm_t ),
	1229	sizeof( vmm_t ),
	1230	sizeof( gpt_t ),
	1231	sizeof( list_entry_t ),
	1232	sizeof( xlist_entry_t ),
	1233	sizeof( spinlock_t ),
	1234	sizeof( remote_spinlock_t ),
	1235	sizeof( rwlock_t ),
	1236	sizeof( remote_rwlock_t ));
[406]	1237	#endif
	1238
[1]	1239	}
	1240
[398]	1241	// each core activates its private TICK IRQ
	1242	dev_pic_enable_timer( CONFIG_SCHED_TICK_MS_PERIOD );
[14]	1243
[440]	1244	#if DEBUG_KERNEL_INIT
	1245	printk("\n[DBG] %s : thread %x on core[%x,%d] jumps to thread_idle_func() / cycle %d\n",
	1246	__FUNCTION__ , CURRENT_THREAD , local_cxy , core_lid , (uint32_t)hal_get_cycles() );
	1247	#endif
	1248
[407]	1249	// each core jump to thread_idle_func
[50]	1250	thread_idle_func();
[127]	1251	}
[14]	1252

Note: See TracBrowser for help on using the repository browser.

Download in other formats: