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kernel_init.c @ 490

Last change on this file since 490 was 490, checked in by viala@…, 6 years ago

Minor: Add extern prototype for kernel_init function.

Also I add documentation from where this function is called.

Gcc warning fixed:
`
kern/kernel_init.c: At top level:
kern/kernel_init.c:744:6: warning: no previous declaration for 'kernel_init'
[-Wmissing-declarations]

void kernel_init( boot_info_t * info )

File size: 53.4 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>
[457]	27	#include <hal_kernel_types.h>
[1]	28	#include <hal_special.h>
	29	#include <hal_context.h>
[279]	30	#include <hal_irqmask.h>
[296]	31	#include <hal_ppm.h>
[14]	32	#include <barrier.h>
[1]	33	#include <remote_barrier.h>
[407]	34	#include <remote_fifo.h>
[1]	35	#include <core.h>
	36	#include <list.h>
[68]	37	#include <xlist.h>
[204]	38	#include <xhtab.h>
[1]	39	#include <thread.h>
	40	#include <scheduler.h>
	41	#include <kmem.h>
	42	#include <cluster.h>
	43	#include <string.h>
	44	#include <memcpy.h>
	45	#include <ppm.h>
	46	#include <page.h>
[5]	47	#include <chdev.h>
[1]	48	#include <boot_info.h>
	49	#include <dqdt.h>
	50	#include <dev_mmc.h>
[5]	51	#include <dev_dma.h>
	52	#include <dev_iob.h>
[1]	53	#include <dev_ioc.h>
[5]	54	#include <dev_txt.h>
[1]	55	#include <dev_pic.h>
	56	#include <printk.h>
	57	#include <vfs.h>
[23]	58	#include <devfs.h>
[68]	59	#include <mapper.h>
[1]	60
	61	///////////////////////////////////////////////////////////////////////////////////////////
[279]	62	// All the following global variables are replicated in all clusters.
[1]	63	// They are initialised by the kernel_init() function.
[14]	64	//
[127]	65	// WARNING : The section names have been defined to control the base addresses of the
[14]	66	// boot_info structure and the idle thread descriptors, through the kernel.ld script:
[127]	67	// - the boot_info structure is built by the bootloader, and used by kernel_init.
	68	// it must be the first object in the kdata segment.
[14]	69	// - the array of idle threads descriptors must be placed on the first page boundary after
	70	// the boot_info structure in the kdata segment.
[1]	71	///////////////////////////////////////////////////////////////////////////////////////////
	72
[5]	73	// This variable defines the local boot_info structure
	74	__attribute__((section(".kinfo")))
[14]	75	boot_info_t boot_info;
[5]	76
[14]	77	// This variable defines the "idle" threads descriptors array
	78	__attribute__((section(".kidle")))
[381]	79	char idle_threads[CONFIG_THREAD_DESC_SIZE *
[14]	80	CONFIG_MAX_LOCAL_CORES] CONFIG_PPM_PAGE_ALIGNED;
	81
[127]	82	// This variable defines the local cluster manager
[5]	83	__attribute__((section(".kdata")))
[19]	84	cluster_t cluster_manager CONFIG_CACHE_LINE_ALIGNED;
[1]	85
[407]	86	// This variable defines the TXT0 kernel terminal (TX only)
[188]	87	__attribute__((section(".kdata")))
	88	chdev_t txt0_chdev CONFIG_CACHE_LINE_ALIGNED;
	89
[14]	90	// This variables define the kernel process0 descriptor
[5]	91	__attribute__((section(".kdata")))
[19]	92	process_t process_zero CONFIG_CACHE_LINE_ALIGNED;
[1]	93
[14]	94	// This variable defines extended pointers on the distributed chdevs
[5]	95	__attribute__((section(".kdata")))
[14]	96	chdev_directory_t chdev_dir CONFIG_CACHE_LINE_ALIGNED;
[1]	97
[188]	98	// This variable contains the input IRQ indexes for the IOPIC controller
[5]	99	__attribute__((section(".kdata")))
[246]	100	iopic_input_t iopic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	101
[188]	102	// This variable contains the input IRQ indexes for the LAPIC controller
[5]	103	__attribute__((section(".kdata")))
[188]	104	lapic_input_t lapic_input CONFIG_CACHE_LINE_ALIGNED;
[1]	105
[14]	106	// This variable defines the local cluster identifier
[5]	107	__attribute__((section(".kdata")))
[14]	108	cxy_t local_cxy CONFIG_CACHE_LINE_ALIGNED;
[5]	109
[127]	110	// This variable is used for CP0 cores synchronisation in kernel_init()
[5]	111	__attribute__((section(".kdata")))
[14]	112	remote_barrier_t global_barrier CONFIG_CACHE_LINE_ALIGNED;
[1]	113
[127]	114	// This variable is used for local cores synchronisation in kernel_init()
[14]	115	__attribute__((section(".kdata")))
	116	barrier_t local_barrier CONFIG_CACHE_LINE_ALIGNED;
	117
[127]	118	// This variable defines the array of supported File System contexts
[50]	119	__attribute__((section(".kdata")))
	120	vfs_ctx_t fs_context[FS_TYPES_NR] CONFIG_CACHE_LINE_ALIGNED;
	121
[490]	122	// kernel_init is the entry point defined in hal/tsar_mips32/kernel.ld
	123	// It will be used by the bootloader.
	124	extern void kernel_init( boot_info_t * info );
[50]	125
[435]	126	// these debug variables are used to analyse the sys_read() syscall timing
[408]	127
[438]	128	#if DEBUG_SYS_READ
[407]	129	uint32_t enter_sys_read;
	130	uint32_t exit_sys_read;
	131
[435]	132	uint32_t enter_devfs_read;
	133	uint32_t exit_devfs_read;
[407]	134
	135	uint32_t enter_txt_read;
	136	uint32_t exit_txt_read;
	137
[435]	138	uint32_t enter_chdev_cmd_read;
	139	uint32_t exit_chdev_cmd_read;
[407]	140
[435]	141	uint32_t enter_chdev_server_read;
	142	uint32_t exit_chdev_server_read;
[407]	143
[435]	144	uint32_t enter_tty_cmd_read;
	145	uint32_t exit_tty_cmd_read;
[407]	146
[435]	147	uint32_t enter_tty_isr_read;
	148	uint32_t exit_tty_isr_read;
[407]	149	#endif
	150
[435]	151	// these debug variables are used to analyse the sys_write() syscall timing
	152
[438]	153	#if DEBUG_SYS_WRITE
[435]	154	uint32_t enter_sys_write;
	155	uint32_t exit_sys_write;
	156
	157	uint32_t enter_devfs_write;
	158	uint32_t exit_devfs_write;
	159
	160	uint32_t enter_txt_write;
	161	uint32_t exit_txt_write;
	162
	163	uint32_t enter_chdev_cmd_write;
	164	uint32_t exit_chdev_cmd_write;
	165
	166	uint32_t enter_chdev_server_write;
	167	uint32_t exit_chdev_server_write;
	168
	169	uint32_t enter_tty_cmd_write;
	170	uint32_t exit_tty_cmd_write;
	171
	172	uint32_t enter_tty_isr_write;
	173	uint32_t exit_tty_isr_write;
	174	#endif
	175
[1]	176	///////////////////////////////////////////////////////////////////////////////////////////
[5]	177	// This function displays the ALMOS_MKH banner.
[1]	178	///////////////////////////////////////////////////////////////////////////////////////////
[5]	179	static void print_banner( uint32_t nclusters , uint32_t ncores )
[127]	180	{
[5]	181	printk("\n"
	182	" _ __ __ _____ ______ __ __ _ __ _ _ \n"
	183	" /\\ \| \| \| \\ / \| / ___ \\ / _____\| \| \\ / \| \| \| / / \| \| \| \| \n"
	184	" / \\ \| \| \| \\/ \| \| / \\ \| \| / \| \\/ \| \| \|/ / \| \| \| \| \n"
	185	" / /\\ \\ \| \| \| \|\\ /\| \| \| \| \| \| \| \|_____ ___ \| \|\\ /\| \| \| / \| \|___\| \| \n"
	186	" / /__\\ \\ \| \| \| \| \\/ \| \| \| \| \| \| \\_____ \\ \|___\| \| \| \\/ \| \| \| \\ \| ___ \| \n"
	187	" / ______ \\ \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|\\ \\ \| \| \| \| \n"
	188	" / / \\ \\ \| \|____ \| \| \| \| \| \\___/ \| _____/ \| \| \| \| \| \| \| \\ \\ \| \| \| \| \n"
	189	" /_/ \\_\\ \|______\| \|_\| \|_\| \\_____/ \|______/ \|_\| \|_\| \|_\| \\_\\ \|_\| \|_\| \n"
	190	"\n\n\t\t Advanced Locality Management Operating System / Multi Kernel Hybrid\n"
[457]	191	"\n\n\t\t %s / %d cluster(s) / %d core(s) per cluster\n\n",
	192	CONFIG_ALMOS_VERSION , nclusters , ncores );
[5]	193	}
[1]	194
	195
[5]	196	///////////////////////////////////////////////////////////////////////////////////////////
[188]	197	// This function initializes the TXT0 chdev descriptor, that is the "kernel terminal",
	198	// shared by all kernel instances for debug messages.
	199	// It is a global variable (replicated in all clusters), because this terminal is used
	200	// before the kmem allocator initialisation, but only the instance in cluster containing
	201	// the calling core is registered in the "chdev_dir" directory.
[127]	202	// As this TXT0 chdev supports only the TXT_SYNC_WRITE command, we don't create
	203	// a server thread, we don't allocate a WTI, and we don't initialize the waiting queue.
[5]	204	///////////////////////////////////////////////////////////////////////////////////////////
	205	// @ info : pointer on the local boot-info structure.
	206	///////////////////////////////////////////////////////////////////////////////////////////
	207	static void txt0_device_init( boot_info_t * info )
	208	{
	209	boot_device_t * dev_tbl; // pointer on array of devices in boot_info
[127]	210	uint32_t dev_nr; // actual number of devices in this cluster
	211	xptr_t base; // remote pointer on segment base
	212	uint32_t func; // device functional index
[5]	213	uint32_t impl; // device implementation index
[127]	214	uint32_t i; // device index in dev_tbl
	215	uint32_t x; // X cluster coordinate
	216	uint32_t y; // Y cluster coordinate
[188]	217	uint32_t channels; // number of channels
[1]	218
[5]	219	// get number of peripherals and base of devices array from boot_info
[127]	220	dev_nr = info->ext_dev_nr;
[5]	221	dev_tbl = info->ext_dev;
[1]	222
[14]	223	// loop on external peripherals to find TXT device
[127]	224	for( i = 0 ; i < dev_nr ; i++ )
	225	{
[5]	226	base = dev_tbl[i].base;
[188]	227	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	228	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	229	channels = dev_tbl[i].channels;
[5]	230
[127]	231	if (func == DEV_FUNC_TXT )
[5]	232	{
[428]	233	assert( (channels > 0) , __FUNCTION__ , "number of TXT channels cannot be 0\n");
[5]	234
[428]	235	// initializes TXT_TX[0] chdev
[188]	236	txt0_chdev.func = func;
	237	txt0_chdev.impl = impl;
	238	txt0_chdev.channel = 0;
	239	txt0_chdev.base = base;
	240	txt0_chdev.is_rx = false;
	241
	242	// initializes lock
[14]	243	remote_spinlock_init( XPTR( local_cxy , &txt0_chdev.wait_lock ) );
[188]	244
	245	// TXT specific initialisation:
	246	// no server thread & no IRQ routing for channel 0
	247	dev_txt_init( &txt0_chdev );
[14]	248
[188]	249	// register the TXT0 in all chdev_dir[x][y] structures
[5]	250	for( x = 0 ; x < info->x_size ; x++ )
	251	{
	252	for( y = 0 ; y < info->y_size ; y++ )
	253	{
	254	cxy_t cxy = (x<<info->y_width) + y;
[407]	255	hal_remote_swd( XPTR( cxy , &chdev_dir.txt_tx[0] ) ,
[14]	256	XPTR( local_cxy , &txt0_chdev ) );
[5]	257	}
	258	}
	259	}
[188]	260	} // end loop on devices
	261	} // end txt0_device_init()
[5]	262
[1]	263	///////////////////////////////////////////////////////////////////////////////////////////
[188]	264	// This function allocates memory and initializes the chdev descriptors for the internal
	265	// peripherals contained in the local cluster, other than the LAPIC, as specified by
	266	// the boot_info, including the linking with the driver for the specified implementation.
	267	// The relevant entries in all copies of the devices directory are initialised.
[1]	268	///////////////////////////////////////////////////////////////////////////////////////////
	269	// @ info : pointer on the local boot-info structure.
	270	///////////////////////////////////////////////////////////////////////////////////////////
[5]	271	static void internal_devices_init( boot_info_t * info )
[1]	272	{
[188]	273	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
	274	uint32_t dev_nr; // actual number of devices in this cluster
	275	xptr_t base; // remote pointer on segment base
	276	uint32_t func; // device functionnal index
	277	uint32_t impl; // device implementation index
	278	uint32_t i; // device index in dev_tbl
	279	uint32_t x; // X cluster coordinate
	280	uint32_t y; // Y cluster coordinate
	281	uint32_t channels; // number of channels
	282	uint32_t channel; // channel index
	283	chdev_t * chdev_ptr; // local pointer on created chdev
[1]	284
[188]	285	// get number of internal peripherals and base from boot_info
	286	dev_nr = info->int_dev_nr;
	287	dev_tbl = info->int_dev;
[1]	288
[188]	289	// loop on internal peripherals
	290	for( i = 0 ; i < dev_nr ; i++ )
	291	{
	292	base = dev_tbl[i].base;
	293	channels = dev_tbl[i].channels;
	294	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	295	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[204]	296
[188]	297	//////////////////////////
	298	if( func == DEV_FUNC_MMC )
[5]	299	{
[188]	300	assert( (channels == 1) , __FUNCTION__ ,
	301	"MMC device must be single channel\n" );
[1]	302
[188]	303	// create chdev in local cluster
	304	chdev_ptr = chdev_create( func,
	305	impl,
	306	0, // channel
	307	false, // direction
	308	base );
[14]	309
[188]	310	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	311	"cannot allocate memory for MMC chdev\n" );
	312
	313	// make MMC specific initialisation
	314	dev_mmc_init( chdev_ptr );
[1]	315
[188]	316	// set the MMC field in all chdev_dir[x][y] structures
	317	for( x = 0 ; x < info->x_size ; x++ )
[1]	318	{
[188]	319	for( y = 0 ; y < info->y_size ; y++ )
	320	{
	321	cxy_t cxy = (x<<info->y_width) + y;
	322	hal_remote_swd( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
	323	XPTR( local_cxy , chdev_ptr ) );
	324	}
[1]	325	}
[188]	326
[438]	327	#if( DEBUG_KERNEL_INIT & 0x1 )
	328	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	329	printk("\n[DBG] %s : created MMC in cluster %x / chdev = %x\n",
	330	__FUNCTION__ , local_cxy , chdev_ptr );
[389]	331	#endif
[14]	332	}
[188]	333	///////////////////////////////
	334	else if( func == DEV_FUNC_DMA )
[127]	335	{
[188]	336	// create one chdev per channel in local cluster
	337	for( channel = 0 ; channel < channels ; channel++ )
	338	{
	339	// create chdev[channel] in local cluster
	340	chdev_ptr = chdev_create( func,
	341	impl,
	342	channel,
	343	false, // direction
	344	base );
[5]	345
[188]	346	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
	347	"cannot allocate memory for DMA chdev" );
	348
	349	// make DMA specific initialisation
	350	dev_dma_init( chdev_ptr );
[127]	351
[188]	352	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
	353	// structure because the DMA device is not remotely accessible.
	354	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
[5]	355
[438]	356	#if( DEBUG_KERNEL_INIT & 0x1 )
	357	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	358	printk("\n[DBG] %s : created DMA[%d] in cluster %x / chdev = %x\n",
[389]	359	__FUNCTION__ , channel , local_cxy , chdev_ptr );
	360	#endif
[188]	361	}
[14]	362	}
[127]	363	}
[5]	364	} // end internal_devices_init()
	365
	366	///////////////////////////////////////////////////////////////////////////////////////////
[188]	367	// This function allocates memory and initializes the chdev descriptors for the
[408]	368	// external (shared) peripherals other than the IOPIC, as specified by the boot_info.
	369	// This includes the dynamic linking with the driver for the specified implementation.
[188]	370	// These chdev descriptors are distributed on all clusters, using a modulo on a global
[408]	371	// index, identically computed in all clusters.
	372	// This function is executed in all clusters by the CP0 core, that computes a global index
	373	// for all external chdevs. Each CP0 core creates only the chdevs that must be placed in
	374	// the local cluster, because the global index matches the local index.
[188]	375	// The relevant entries in all copies of the devices directory are initialised.
[5]	376	///////////////////////////////////////////////////////////////////////////////////////////
	377	// @ info : pointer on the local boot-info structure.
	378	///////////////////////////////////////////////////////////////////////////////////////////
	379	static void external_devices_init( boot_info_t * info )
	380	{
[188]	381	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
	382	uint32_t dev_nr; // actual number of external devices
	383	xptr_t base; // remote pointer on segment base
[5]	384	uint32_t func; // device functionnal index
	385	uint32_t impl; // device implementation index
[188]	386	uint32_t i; // device index in dev_tbl
	387	uint32_t x; // X cluster coordinate
	388	uint32_t y; // Y cluster coordinate
	389	uint32_t channels; // number of channels
	390	uint32_t channel; // channel index
	391	uint32_t directions; // number of directions (1 or 2)
	392	uint32_t rx; // direction index (0 or 1)
[127]	393	chdev_t * chdev; // local pointer on one channel_device descriptor
[188]	394	uint32_t ext_chdev_gid; // global index of external chdev
[5]	395
	396	// get number of peripherals and base of devices array from boot_info
[127]	397	dev_nr = info->ext_dev_nr;
[5]	398	dev_tbl = info->ext_dev;
	399
[188]	400	// initializes global index (PIC is already placed in cluster 0
	401	ext_chdev_gid = 1;
	402
[5]	403	// loop on external peripherals
[127]	404	for( i = 0 ; i < dev_nr ; i++ )
	405	{
[188]	406	base = dev_tbl[i].base;
	407	channels = dev_tbl[i].channels;
	408	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	409	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
[5]	410
[407]	411	// There is one chdev per direction for NIC and for TXT
	412	if((func == DEV_FUNC_NIC) \|\| (func == DEV_FUNC_TXT)) directions = 2;
	413	else directions = 1;
[5]	414
[407]	415	// do nothing for ROM, that does not require a device descriptor.
[5]	416	if( func == DEV_FUNC_ROM ) continue;
	417
[188]	418	// do nothing for PIC, that is already initialized
	419	if( func == DEV_FUNC_PIC ) continue;
[5]	420
[188]	421	// check PIC device initialized
	422	assert( (chdev_dir.pic != XPTR_NULL ) , __FUNCTION__ ,
	423	"PIC device must be initialized before other devices\n" );
	424
	425	// check external device functionnal type
	426	assert( ( (func == DEV_FUNC_IOB) \|\|
	427	(func == DEV_FUNC_IOC) \|\|
	428	(func == DEV_FUNC_TXT) \|\|
	429	(func == DEV_FUNC_NIC) \|\|
	430	(func == DEV_FUNC_FBF) ) , __FUNCTION__ ,
	431	"undefined external peripheral type\n" );
	432
[127]	433	// loops on channels
[428]	434	for( channel = 0 ; channel < channels ; channel++ )
[127]	435	{
[5]	436	// loop on directions
[188]	437	for( rx = 0 ; rx < directions ; rx++ )
[1]	438	{
[428]	439	// skip TXT_TX[0] chdev that has already been created & registered
	440	if( (func == DEV_FUNC_TXT) && (channel == 0) && (rx == 0) ) continue;
	441
[188]	442	// compute target cluster for chdev[func,channel,direction]
	443	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
[5]	444	uint32_t cx = offset / info->y_size;
	445	uint32_t cy = offset % info->y_size;
	446	uint32_t target_cxy = (cx<<info->y_width) + cy;
[1]	447
[5]	448	// allocate and initialize a local chdev
[407]	449	// when local cluster matches target cluster
[5]	450	if( target_cxy == local_cxy )
[1]	451	{
[5]	452	chdev = chdev_create( func,
	453	impl,
	454	channel,
[188]	455	rx, // direction
[5]	456	base );
	457
[127]	458	assert( (chdev != NULL), __FUNCTION__ ,
[5]	459	"cannot allocate external device" );
	460
	461	// make device type specific initialisation
	462	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
	463	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
	464	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
	465	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
[188]	466	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
[5]	467
[127]	468	// all external (shared) devices are remotely accessible
[5]	469	// initialize the replicated chdev_dir[x][y] structures
[127]	470	// defining the extended pointers on chdev descriptors
	471	xptr_t * entry;
	472
[188]	473	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
	474	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
	475	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
[407]	476	if((func==DEV_FUNC_TXT) && (rx==0)) entry = &chdev_dir.txt_tx[channel];
	477	if((func==DEV_FUNC_TXT) && (rx==1)) entry = &chdev_dir.txt_rx[channel];
[188]	478	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
	479	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
[127]	480
[1]	481	for( x = 0 ; x < info->x_size ; x++ )
	482	{
	483	for( y = 0 ; y < info->y_size ; y++ )
	484	{
	485	cxy_t cxy = (x<<info->y_width) + y;
[188]	486	hal_remote_swd( XPTR( cxy , entry ),
	487	XPTR( local_cxy , chdev ) );
[5]	488	}
[1]	489	}
	490
[438]	491	#if( DEBUG_KERNEL_INIT & 0x1 )
	492	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	493	printk("\n[DBG] %s : create chdev %s / channel = %d / rx = %d / cluster %x / chdev = %x\n",
	494	__FUNCTION__ , chdev_func_str( func ), channel , rx , local_cxy , chdev );
[389]	495	#endif
[5]	496	} // end if match
	497
[19]	498	// increment chdev global index (matching or not)
[188]	499	ext_chdev_gid++;
[5]	500
	501	} // end loop on directions
	502	} // end loop on channels
[188]	503	} // end loop on devices
	504	} // end external_devices_init()
[5]	505
[188]	506	///////////////////////////////////////////////////////////////////////////////////////////
	507	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
[407]	508	// device, namely the informations attached to the external IOPIC controller, that
	509	// must be replicated in all clusters (struct iopic_input).
[188]	510	// This initialisation must be done before other devices initialisation because the IRQ
[407]	511	// routing infrastructure is required for both internal and external devices init.
[188]	512	///////////////////////////////////////////////////////////////////////////////////////////
	513	// @ info : pointer on the local boot-info structure.
	514	///////////////////////////////////////////////////////////////////////////////////////////
	515	static void iopic_init( boot_info_t * info )
	516	{
	517	boot_device_t * dev_tbl; // pointer on boot_info external devices array
	518	uint32_t dev_nr; // actual number of external devices
	519	xptr_t base; // remote pointer on segment base
	520	uint32_t func; // device functionnal index
	521	uint32_t impl; // device implementation index
	522	uint32_t i; // device index in dev_tbl
	523	uint32_t x; // cluster X coordinate
	524	uint32_t y; // cluster Y coordinate
	525	bool_t found; // IOPIC found
	526	chdev_t * chdev; // pointer on PIC chdev descriptor
	527
	528	// get number of external peripherals and base of array from boot_info
	529	dev_nr = info->ext_dev_nr;
	530	dev_tbl = info->ext_dev;
	531
	532	// loop on external peripherals to get the IOPIC
	533	for( i = 0 , found = false ; i < dev_nr ; i++ )
	534	{
	535	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	536
[127]	537	if( func == DEV_FUNC_PIC )
[1]	538	{
[188]	539	base = dev_tbl[i].base;
	540	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
	541	found = true;
	542	break;
	543	}
	544	}
[5]	545
[188]	546	assert( found , __FUNCTION__ , "PIC device not found\n" );
[1]	547
[407]	548	// allocate and initialize the PIC chdev in cluster 0
	549	chdev = chdev_create( DEV_FUNC_PIC,
[188]	550	impl,
	551	0, // channel
	552	0, // direction,
	553	base );
[5]	554
[188]	555	assert( (chdev != NULL), __FUNCTION__ , "no memory for PIC chdev\n" );
[5]	556
[188]	557	// make PIC device type specific initialisation
	558	dev_pic_init( chdev );
[1]	559
[407]	560	// register, in all clusters, the extended pointer
	561	// on PIC chdev in "chdev_dir" array
[188]	562	xptr_t * entry = &chdev_dir.pic;
	563
	564	for( x = 0 ; x < info->x_size ; x++ )
	565	{
	566	for( y = 0 ; y < info->y_size ; y++ )
	567	{
	568	cxy_t cxy = (x<<info->y_width) + y;
	569	hal_remote_swd( XPTR( cxy , entry ) ,
	570	XPTR( local_cxy , chdev ) );
	571	}
	572	}
[1]	573
[407]	574	// initialize, in all clusters, the "iopic_input" structure
[188]	575	// defining how external IRQs are connected to IOPIC
	576
[407]	577	// register default value for unused inputs
	578	for( x = 0 ; x < info->x_size ; x++ )
	579	{
	580	for( y = 0 ; y < info->y_size ; y++ )
	581	{
	582	cxy_t cxy = (x<<info->y_width) + y;
	583	hal_remote_memset( XPTR( cxy , &iopic_input ) , 0xFF , sizeof(iopic_input_t) );
	584	}
	585	}
	586
	587	// register input IRQ index for valid inputs
	588	uint32_t id; // input IRQ index
	589	uint8_t valid; // input IRQ is connected
	590	uint32_t type; // source device type
	591	uint8_t channel; // source device channel
	592	uint8_t is_rx; // source device direction
	593	uint32_t * ptr; // local pointer on one field in iopic_input stucture
	594
[188]	595	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
	596	{
	597	valid = dev_tbl[i].irq[id].valid;
	598	type = dev_tbl[i].irq[id].dev_type;
	599	channel = dev_tbl[i].irq[id].channel;
	600	is_rx = dev_tbl[i].irq[id].is_rx;
[407]	601	func = FUNC_FROM_TYPE( type );
[188]	602
[407]	603	// get pointer on relevant field in iopic_input
	604	if( valid )
[188]	605	{
[407]	606	if ( func == DEV_FUNC_IOC ) ptr = &iopic_input.ioc[channel];
	607	else if((func == DEV_FUNC_TXT) && (is_rx == 0)) ptr = &iopic_input.txt_tx[channel];
	608	else if((func == DEV_FUNC_TXT) && (is_rx != 0)) ptr = &iopic_input.txt_rx[channel];
	609	else if((func == DEV_FUNC_NIC) && (is_rx == 0)) ptr = &iopic_input.nic_tx[channel];
	610	else if((func == DEV_FUNC_NIC) && (is_rx != 0)) ptr = &iopic_input.nic_rx[channel];
	611	else if( func == DEV_FUNC_IOB ) ptr = &iopic_input.iob;
[428]	612	else assert( false , __FUNCTION__ , "illegal source device for IOPIC input" );
[188]	613
[407]	614	// set one entry in all "iopic_input" structures
	615	for( x = 0 ; x < info->x_size ; x++ )
	616	{
	617	for( y = 0 ; y < info->y_size ; y++ )
	618	{
	619	cxy_t cxy = (x<<info->y_width) + y;
	620	hal_remote_swd( XPTR( cxy , ptr ) , id );
	621	}
	622	}
[188]	623	}
	624	}
	625
[438]	626	#if( DEBUG_KERNEL_INIT & 0x1 )
	627	if( hal_time_stamp() > DEBUG_KERNEL_INIT )
[407]	628	{
	629	printk("\n[DBG] %s created PIC chdev in cluster %x at cycle %d\n",
	630	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
	631	dev_pic_inputs_display();
	632	}
[389]	633	#endif
[188]	634
	635	} // end iopic_init()
	636
[1]	637	///////////////////////////////////////////////////////////////////////////////////////////
[188]	638	// This function is called by all CP0s in all cluster to complete the PIC device
	639	// initialisation, namely the informations attached to the LAPIC controller.
	640	// This initialisation must be done after the IOPIC initialisation, but before other
	641	// devices initialisation because the IRQ routing infrastructure is required for both
	642	// internal and external devices initialisation.
	643	///////////////////////////////////////////////////////////////////////////////////////////
	644	// @ info : pointer on the local boot-info structure.
	645	///////////////////////////////////////////////////////////////////////////////////////////
	646	static void lapic_init( boot_info_t * info )
	647	{
	648	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
	649	uint32_t dev_nr; // number of internal devices
	650	uint32_t i; // device index in dev_tbl
	651	xptr_t base; // remote pointer on segment base
	652	uint32_t func; // device functionnal type in boot_info
	653	bool_t found; // LAPIC found
	654
	655	// get number of internal peripherals and base
	656	dev_nr = info->int_dev_nr;
	657	dev_tbl = info->int_dev;
	658
	659	// loop on internal peripherals to get the lapic device
	660	for( i = 0 , found = false ; i < dev_nr ; i++ )
	661	{
	662	func = FUNC_FROM_TYPE( dev_tbl[i].type );
	663
	664	if( func == DEV_FUNC_ICU )
	665	{
	666	base = dev_tbl[i].base;
	667	found = true;
	668	break;
	669	}
	670	}
	671
	672	// if the LAPIC controller is not defined in the boot_info,
	673	// we simply don't initialize the PIC extensions in the kernel,
	674	// making the assumption that the LAPIC related informations
	675	// are hidden in the hardware specific PIC driver.
	676	if( found )
	677	{
	678	// initialise the PIC extensions for
	679	// the core descriptor and core manager extensions
	680	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
	681
	682	// initialize the "lapic_input" structure
	683	// defining how internal IRQs are connected to LAPIC
	684	uint32_t id;
	685	uint8_t valid;
	686	uint8_t channel;
	687	uint32_t func;
	688
	689	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
	690	{
	691	valid = dev_tbl[i].irq[id].valid;
	692	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
	693	channel = dev_tbl[i].irq[id].channel;
	694
	695	if( valid ) // only valid local IRQs are registered
	696	{
	697	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
	698	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
	699	else assert( false , __FUNCTION__ , "illegal source device for LAPIC input" );
	700	}
	701	}
	702	}
	703	} // end lapic_init()
	704
	705	///////////////////////////////////////////////////////////////////////////////////////////
[14]	706	// This static function returns the identifiers of the calling core.
	707	///////////////////////////////////////////////////////////////////////////////////////////
	708	// @ info : pointer on boot_info structure.
	709	// @ lid : [out] core local index in cluster.
	710	// @ cxy : [out] cluster identifier.
	711	// @ lid : [out] core global identifier (hardware).
	712	// @ return 0 if success / return EINVAL if not found.
	713	///////////////////////////////////////////////////////////////////////////////////////////
[23]	714	static error_t get_core_identifiers( boot_info_t * info,
	715	lid_t * lid,
[14]	716	cxy_t * cxy,
	717	gid_t * gid )
	718	{
[127]	719	uint32_t i;
[14]	720	gid_t global_id;
[19]	721
[14]	722	// get global identifier from hardware register
[127]	723	global_id = hal_get_gid();
[14]	724
	725	// makes an associative search in boot_info to get (cxy,lid) from global_id
	726	for( i = 0 ; i < info->cores_nr ; i++ )
	727	{
	728	if( global_id == info->core[i].gid )
	729	{
	730	*lid = info->core[i].lid;
	731	*cxy = info->core[i].cxy;
	732	*gid = global_id;
	733	return 0;
	734	}
	735	}
	736	return EINVAL;
[19]	737	}
[14]	738
	739	///////////////////////////////////////////////////////////////////////////////////////////
[1]	740	// This function is the entry point for the kernel initialisation.
[19]	741	// It is executed by all cores in all clusters, but only core[0], called CP0,
[14]	742	// initializes the shared resources such as the cluster manager, or the local peripherals.
[19]	743	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
	744	// only information contained in the local boot_info_t structure, set by the bootloader.
[103]	745	// Only CP0 in cluster 0 print the log messages.
[1]	746	///////////////////////////////////////////////////////////////////////////////////////////
	747	// @ info : pointer on the local boot-info structure.
	748	///////////////////////////////////////////////////////////////////////////////////////////
	749	void kernel_init( boot_info_t * info )
	750	{
[204]	751	lid_t core_lid = -1; // running core local index
	752	cxy_t core_cxy = -1; // running core cluster identifier
	753	gid_t core_gid; // running core hardware identifier
	754	cluster_t * cluster; // pointer on local cluster manager
	755	core_t * core; // pointer on running core descriptor
	756	thread_t * thread; // pointer on idle thread descriptor
	757
	758	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
	759	xptr_t devfs_dev_inode_xp; // extended pointer on DEVFS dev inode
	760	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external inode
	761	xptr_t devfs_internal_inode_xp; // extended pointer on DEVFS internal inode
	762
[1]	763	error_t error;
[285]	764	reg_t status; // running core status register
[1]	765
[188]	766	/////////////////////////////////////////////////////////////////////////////////
	767	// STEP 0 : Each core get its core identifier from boot_info, and makes
	768	// a partial initialisation of its private idle thread descriptor.
	769	// CP0 initializes the "local_cxy" global variable.
	770	// CP0 in cluster IO initializes the TXT0 chdev to print log messages.
	771	/////////////////////////////////////////////////////////////////////////////////
	772
[23]	773	error = get_core_identifiers( info,
[14]	774	&core_lid,
	775	&core_cxy,
	776	&core_gid );
[1]	777
[127]	778	// CP0 initializes cluster identifier
[14]	779	if( core_lid == 0 ) local_cxy = info->cxy;
[1]	780
[127]	781	// each core gets a pointer on its private idle thread descriptor
	782	thread = (thread_t )( idle_threads + (core_lid CONFIG_THREAD_DESC_SIZE) );
[68]	783
[127]	784	// each core registers this thread pointer in hardware register
[68]	785	hal_set_current_thread( thread );
[71]	786
[407]	787	// each core register core descriptor pointer in idle thread descriptor
	788	thread->core = &LOCAL_CLUSTER->core_tbl[core_lid];
	789
[437]	790	// each core initializes the idle thread lists of locks
[124]	791	list_root_init( &thread->locks_root );
[188]	792	xlist_root_init( XPTR( local_cxy , &thread->xlocks_root ) );
[437]	793	thread->local_locks = 0;
	794	thread->remote_locks = 0;
[124]	795
[457]	796	// CP0 in cluster 0 initialises TXT0 chdev descriptor
	797	if( (core_lid == 0) && (core_cxy == 0) ) txt0_device_init( info );
[14]	798
	799	/////////////////////////////////////////////////////////////////////////////////
[457]	800	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[14]	801	(info->x_size * info->y_size) );
	802	barrier_wait( &local_barrier , info->cores_nr );
[437]	803	/////////////////////////////////////////////////////////////////////////////////
[14]	804
[438]	805	#if DEBUG_KERNEL_INIT
	806	if( (core_lid == 0) & (local_cxy == 0) )
[437]	807	printk("\n[DBG] %s : exit barrier 0 : TXT0 initialized / cycle %d\n",
	808	__FUNCTION__, (uint32_t)hal_get_cycles() );
	809	#endif
[14]	810
[188]	811	/////////////////////////////////////////////////////////////////////////////
[407]	812	// STEP 1 : all cores check core identifier.
[188]	813	// CP0 initializes the local cluster manager.
	814	// This includes the memory allocators.
	815	/////////////////////////////////////////////////////////////////////////////
	816
	817	// all cores check identifiers
[14]	818	if( error )
[1]	819	{
[428]	820	assert( false , __FUNCTION__ ,
	821	"illegal core identifiers gid = %x / cxy = %x / lid = %d",
	822	core_lid , core_cxy , core_lid );
[1]	823	}
	824
[188]	825	// CP0 initializes cluster manager
[14]	826	if( core_lid == 0 )
[1]	827	{
	828	error = cluster_init( info );
	829
[14]	830	if( error )
	831	{
[428]	832	assert( false , __FUNCTION__ ,
	833	"cannot initialise cluster %x", local_cxy );
[14]	834	}
	835	}
[5]	836
[14]	837	/////////////////////////////////////////////////////////////////////////////////
[457]	838	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[14]	839	(info->x_size * info->y_size) );
	840	barrier_wait( &local_barrier , info->cores_nr );
	841	/////////////////////////////////////////////////////////////////////////////////
[1]	842
[438]	843	#if DEBUG_KERNEL_INIT
	844	if( (core_lid == 0) & (local_cxy == 0) )
[437]	845	printk("\n[DBG] %s : exit barrier 1 : clusters initialised / cycle %d\n",
	846	__FUNCTION__, (uint32_t)hal_get_cycles() );
	847	#endif
[1]	848
[188]	849	/////////////////////////////////////////////////////////////////////////////////
[407]	850	// STEP 2 : CP0 initializes the process_zero descriptor.
[296]	851	// CP0 in cluster 0 initializes the IOPIC device.
[188]	852	/////////////////////////////////////////////////////////////////////////////////
	853
	854	// all cores get pointer on local cluster manager & core descriptor
[14]	855	cluster = &cluster_manager;
[127]	856	core = &cluster->core_tbl[core_lid];
[1]	857
[188]	858	// all CP0s initialize the process_zero descriptor
[428]	859	if( core_lid == 0 ) process_zero_create( &process_zero );
[5]	860
[188]	861	// CP0 in cluster 0 initializes the PIC chdev,
	862	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
	863
	864	////////////////////////////////////////////////////////////////////////////////
[457]	865	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	866	(info->x_size * info->y_size) );
	867	barrier_wait( &local_barrier , info->cores_nr );
	868	////////////////////////////////////////////////////////////////////////////////
[127]	869
[438]	870	#if DEBUG_KERNEL_INIT
	871	if( (core_lid == 0) & (local_cxy == 0) )
[437]	872	printk("\n[DBG] %s : exit barrier 2 : PIC initialised / cycle %d\n",
	873	__FUNCTION__, (uint32_t)hal_get_cycles() );
	874	#endif
[1]	875
[188]	876	////////////////////////////////////////////////////////////////////////////////
[407]	877	// STEP 3 : CP0 initializes the distibuted LAPIC descriptor.
	878	// CP0 initializes the internal chdev descriptors
	879	// CP0 initialize the local external chdev descriptors
[188]	880	////////////////////////////////////////////////////////////////////////////////
[5]	881
[279]	882	// all CP0s initialize their local LAPIC extension,
	883	if( core_lid == 0 ) lapic_init( info );
	884
[188]	885	// CP0 scan the internal (private) peripherals,
	886	// and allocates memory for the corresponding chdev descriptors.
	887	if( core_lid == 0 ) internal_devices_init( info );
	888
[1]	889
[50]	890	// All CP0s contribute to initialise external peripheral chdev descriptors.
[14]	891	// Each CP0[cxy] scan the set of external (shared) peripherals (but the TXT0),
	892	// and allocates memory for the chdev descriptors that must be placed
[127]	893	// on the (cxy) cluster according to the global index value.
[188]	894
[14]	895	if( core_lid == 0 ) external_devices_init( info );
[1]	896
[14]	897	/////////////////////////////////////////////////////////////////////////////////
[457]	898	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[14]	899	(info->x_size * info->y_size) );
	900	barrier_wait( &local_barrier , info->cores_nr );
	901	/////////////////////////////////////////////////////////////////////////////////
[5]	902
[438]	903	#if DEBUG_KERNEL_INIT
	904	if( (core_lid == 0) & (local_cxy == 0) )
[437]	905	printk("\n[DBG] %s : exit barrier 3 : all chdev initialised / cycle %d\n",
	906	__FUNCTION__, (uint32_t)hal_get_cycles() );
	907	#endif
[1]	908
[438]	909	#if( DEBUG_KERNEL_INIT & 1 )
[443]	910	if( (core_lid == 0) & (local_cxy == 0) )
[437]	911	chdev_dir_display();
	912	#endif
	913
[188]	914	/////////////////////////////////////////////////////////////////////////////////
[279]	915	// STEP 4 : All cores enable IPI (Inter Procesor Interrupt),
	916	// Alh cores initialize IDLE thread.
[188]	917	// Only CP0 in cluster 0 creates the VFS root inode.
	918	// It access the boot device to initialize the file system context.
	919	/////////////////////////////////////////////////////////////////////////////////
	920
[279]	921	// All cores enable the shared IPI channel
	922	dev_pic_enable_ipi();
	923	hal_enable_irq( &status );
	924
[296]	925	// all cores initialize the idle thread descriptor
[457]	926	thread_idle_init( thread,
	927	THREAD_IDLE,
	928	&thread_idle_func,
	929	NULL,
	930	core_lid );
[1]	931
[296]	932	// all cores unblock idle thread, and register it in scheduler
	933	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
[103]	934	core->scheduler.idle = thread;
[1]	935
[438]	936	#if( DEBUG_KERNEL_INIT & 1 )
[407]	937	sched_display( core_lid );
[389]	938	#endif
[14]	939
[188]	940	// CPO in cluster 0 creates the VFS root
	941	if( (core_lid == 0) && (local_cxy == 0 ) )
[14]	942	{
[188]	943	vfs_root_inode_xp = XPTR_NULL;
[23]	944
[188]	945	// File System must be FATFS in this implementation,
	946	// but other File System can be introduced here
[23]	947	if( CONFIG_VFS_ROOT_IS_FATFS )
	948	{
[389]	949	// 1. allocate memory for FATFS context in cluster 0
[188]	950	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
	951
[279]	952	assert( (fatfs_ctx != NULL) , __FUNCTION__ ,
	953	"cannot create FATFS context in cluster 0\n" );
[188]	954
	955	// 2. access boot device to initialize FATFS context
	956	fatfs_ctx_init( fatfs_ctx );
	957
	958	// 3. get various informations from FATFS context
	959	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
	960	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
	961	fatfs_ctx->sectors_per_cluster;
	962	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
	963
	964	// 4. create VFS root inode in cluster 0
	965	error = vfs_inode_create( XPTR_NULL, // dentry_xp
	966	FS_TYPE_FATFS, // fs_type
	967	INODE_TYPE_DIR, // inode_type
	968	(void *)(intptr_t)root_dir_cluster, // extend
	969	0, // attr
	970	0, // rights
	971	0, // uid
	972	0, // gid
	973	&vfs_root_inode_xp ); // return
	974
[279]	975	assert( (error == 0) , __FUNCTION__ ,
	976	"cannot create VFS root inode\n" );
[188]	977
	978	// 5. initialize VFS context for FAT in cluster 0
	979	vfs_ctx_init( FS_TYPE_FATFS, // file system type
	980	0, // attributes
	981	total_clusters,
	982	cluster_size,
	983	vfs_root_inode_xp, // VFS root
	984	fatfs_ctx ); // extend
[389]	985
	986	// 6. check initialisation
	987	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	988	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
	989	__FUNCTION__ , "illegal value for FATFS context in cluster %x\n", local_cxy );
[23]	990	}
	991	else
	992	{
[428]	993	assert( false , __FUNCTION__ ,
	994	"root FS must be FATFS" );
[23]	995	}
	996
[389]	997	// register VFS root inode in process_zero descriptor of cluster 0
[188]	998	process_zero.vfs_root_xp = vfs_root_inode_xp;
	999	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
	1000	}
	1001
	1002	/////////////////////////////////////////////////////////////////////////////////
[457]	1003	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1004	(info->x_size * info->y_size) );
	1005	barrier_wait( &local_barrier , info->cores_nr );
	1006	/////////////////////////////////////////////////////////////////////////////////
	1007
[438]	1008	#if DEBUG_KERNEL_INIT
	1009	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1010	printk("\n[DBG] %s : exit barrier 4 : VFS_root = %l in cluster 0 / cycle %d\n",
	1011	__FUNCTION__, vfs_root_inode_xp , (uint32_t)hal_get_cycles());
	1012	#endif
[188]	1013
	1014	/////////////////////////////////////////////////////////////////////////////////
	1015	// STEP 5 : Other CP0s allocate memory for the selected FS context,
	1016	// and initialise both the local FS context and the local VFS context
	1017	// from values stored in cluster 0.
	1018	// They get the VFS root inode extended pointer from cluster 0.
	1019	/////////////////////////////////////////////////////////////////////////////////
	1020
	1021	if( (core_lid == 0) && (local_cxy != 0) )
	1022	{
	1023	// File System must be FATFS in this implementation,
	1024	// but other File System can be introduced here
	1025	if( CONFIG_VFS_ROOT_IS_FATFS )
[23]	1026	{
[389]	1027	// 1. allocate memory for local FATFS context
	1028	fatfs_ctx_t * local_fatfs_ctx = fatfs_ctx_alloc();
[188]	1029
[389]	1030	assert( (local_fatfs_ctx != NULL) , __FUNCTION__ ,
	1031	"cannot create FATFS context in cluster %x\n", local_cxy );
[188]	1032
[389]	1033	// 2. get local pointer on VFS context for FATFS
[188]	1034	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
	1035
[389]	1036	// 3. get local pointer on FATFS context in cluster 0
	1037	fatfs_ctx_t * remote_fatfs_ctx = hal_remote_lpt( XPTR( 0 , &vfs_ctx->extend ) );
	1038
	1039	// 4. copy FATFS context from cluster 0 to local cluster
	1040	hal_remote_memcpy( XPTR( local_cxy , local_fatfs_ctx ),
	1041	XPTR( 0 , remote_fatfs_ctx ), sizeof(fatfs_ctx_t) );
	1042
	1043	// 5. copy VFS context from cluster 0 to local cluster
[188]	1044	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
[389]	1045	XPTR( 0 , vfs_ctx ), sizeof(vfs_ctx_t) );
[188]	1046
[389]	1047	// 6. update extend field in local copy of VFS context
	1048	vfs_ctx->extend = local_fatfs_ctx;
[188]	1049
[389]	1050	// 7. check initialisation
	1051	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
	1052	__FUNCTION__ , "illegal value for FATFS context in cluster %x\n", local_cxy );
[23]	1053	}
	1054
[188]	1055	// get extended pointer on VFS root inode from cluster 0
[296]	1056	vfs_root_inode_xp = hal_remote_lwd( XPTR( 0 , &process_zero.vfs_root_xp ) );
[101]	1057
[188]	1058	// update local process_zero descriptor
	1059	process_zero.vfs_root_xp = vfs_root_inode_xp;
	1060	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
[14]	1061	}
	1062
[188]	1063	/////////////////////////////////////////////////////////////////////////////////
[457]	1064	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1065	(info->x_size * info->y_size) );
	1066	barrier_wait( &local_barrier , info->cores_nr );
[204]	1067	/////////////////////////////////////////////////////////////////////////////////
[101]	1068
[438]	1069	#if DEBUG_KERNEL_INIT
	1070	if( (core_lid == 0) & (local_cxy == 0) )
[457]	1071	printk("\n[DBG] %s : exit barrier 5 : VFS_root = %l in cluster 0 / cycle %d\n",
	1072	__FUNCTION__, vfs_root_inode_xp , (uint32_t)hal_get_cycles());
[437]	1073	#endif
[188]	1074
	1075	/////////////////////////////////////////////////////////////////////////////////
	1076	// STEP 6 : CP0 in cluster IO makes the global DEVFS tree initialisation:
[204]	1077	// It creates the DEVFS directory "dev", and the DEVFS "external"
	1078	// directory in cluster IO and mount these inodes into VFS.
[188]	1079	/////////////////////////////////////////////////////////////////////////////////
	1080
[457]	1081	if( (core_lid == 0) && (local_cxy == 0) )
[1]	1082	{
[188]	1083	// create "dev" and "external" directories.
	1084	devfs_global_init( process_zero.vfs_root_xp,
[204]	1085	&devfs_dev_inode_xp,
[188]	1086	&devfs_external_inode_xp );
	1087
	1088	// creates the DEVFS context in cluster IO
	1089	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
	1090
[279]	1091	assert( (devfs_ctx != NULL) , __FUNCTION__ ,
	1092	"cannot create DEVFS context in cluster IO\n");
[188]	1093
	1094	// register DEVFS root and external directories
[204]	1095	devfs_ctx_init( devfs_ctx, devfs_dev_inode_xp, devfs_external_inode_xp );
[188]	1096	}
	1097
	1098	/////////////////////////////////////////////////////////////////////////////////
[457]	1099	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1100	(info->x_size * info->y_size) );
	1101	barrier_wait( &local_barrier , info->cores_nr );
[204]	1102	/////////////////////////////////////////////////////////////////////////////////
[188]	1103
[438]	1104	#if DEBUG_KERNEL_INIT
	1105	if( (core_lid == 0) & (local_cxy == 0) )
[457]	1106	printk("\n[DBG] %s : exit barrier 6 : dev_root = %l in cluster 0 / cycle %d\n",
	1107	__FUNCTION__, devfs_dev_inode_xp , (uint32_t)hal_get_cycles() );
[437]	1108	#endif
[188]	1109
	1110	/////////////////////////////////////////////////////////////////////////////////
	1111	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
	1112	// Each CP0 get the "dev" and "external" extended pointers from
[204]	1113	// values stored in cluster IO.
[337]	1114	// Then each CP0 in cluster(i) creates the DEVFS "internal directory,
[204]	1115	// and creates the pseudo-files for all chdevs in cluster (i).
[188]	1116	/////////////////////////////////////////////////////////////////////////////////
	1117
	1118	if( core_lid == 0 )
	1119	{
[457]	1120	// get extended pointer on "extend" field of VFS context for DEVFS in cluster 0
	1121	xptr_t extend_xp = XPTR( 0 , &fs_context[FS_TYPE_DEVFS].extend );
[188]	1122
[457]	1123	// get pointer on DEVFS context in cluster 0
[188]	1124	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
	1125
[457]	1126	devfs_dev_inode_xp = hal_remote_lwd( XPTR( 0 , &devfs_ctx->dev_inode_xp ) );
	1127	devfs_external_inode_xp = hal_remote_lwd( XPTR( 0 , &devfs_ctx->external_inode_xp ) );
[188]	1128
[204]	1129	// populate DEVFS in all clusters
	1130	devfs_local_init( devfs_dev_inode_xp,
	1131	devfs_external_inode_xp,
	1132	&devfs_internal_inode_xp );
[188]	1133	}
	1134
	1135	/////////////////////////////////////////////////////////////////////////////////
[457]	1136	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1137	(info->x_size * info->y_size) );
	1138	barrier_wait( &local_barrier , info->cores_nr );
[204]	1139	/////////////////////////////////////////////////////////////////////////////////
[188]	1140
[438]	1141	#if DEBUG_KERNEL_INIT
	1142	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1143	printk("\n[DBG] %s : exit barrier 7 : dev_root = %l in cluster 0 / cycle %d\n",
	1144	__FUNCTION__, devfs_dev_inode_xp , (uint32_t)hal_get_cycles() );
	1145	#endif
[188]	1146
	1147	/////////////////////////////////////////////////////////////////////////////////
[428]	1148	// STEP 8 : CP0 in cluster 0 creates the first user process (process_init)
[188]	1149	/////////////////////////////////////////////////////////////////////////////////
	1150
[457]	1151	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1152	{
[428]	1153
[438]	1154	#if( DEBUG_KERNEL_INIT & 1 )
[428]	1155	vfs_display( vfs_root_inode_xp );
	1156	#endif
	1157
	1158	process_init_create();
[188]	1159	}
[101]	1160
[188]	1161	/////////////////////////////////////////////////////////////////////////////////
[457]	1162	if( core_lid == 0 ) remote_barrier( XPTR( 0 , &global_barrier ),
[188]	1163	(info->x_size * info->y_size) );
	1164	barrier_wait( &local_barrier , info->cores_nr );
[204]	1165	/////////////////////////////////////////////////////////////////////////////////
[188]	1166
[438]	1167	#if DEBUG_KERNEL_INIT
	1168	if( (core_lid == 0) & (local_cxy == 0) )
[437]	1169	printk("\n[DBG] %s : exit barrier 8 : process init created / cycle %d\n",
	1170	__FUNCTION__ , (uint32_t)hal_get_cycles() );
	1171	#endif
[188]	1172
[443]	1173	#if (DEBUG_KERNEL_INIT & 1)
	1174	if( (core_lid == 0) & (local_cxy == 0) )
	1175	sched_display( 0 );
	1176	#endif
	1177
[188]	1178	/////////////////////////////////////////////////////////////////////////////////
	1179	// STEP 9 : CP0 in cluster 0 print banner
	1180	/////////////////////////////////////////////////////////////////////////////////
	1181
[457]	1182	if( (core_lid == 0) && (local_cxy == 0) )
[188]	1183	{
[5]	1184	print_banner( (info->x_size * info->y_size) , info->cores_nr );
[68]	1185
[438]	1186	#if( DEBUG_KERNEL_INIT & 1 )
[437]	1187	printk("\n\n***** memory fooprint for main kernel objects\n\n"
[68]	1188	" - thread descriptor : %d bytes\n"
	1189	" - process descriptor : %d bytes\n"
	1190	" - cluster manager : %d bytes\n"
	1191	" - chdev descriptor : %d bytes\n"
	1192	" - core descriptor : %d bytes\n"
	1193	" - scheduler : %d bytes\n"
	1194	" - rpc fifo : %d bytes\n"
	1195	" - page descriptor : %d bytes\n"
	1196	" - mapper root : %d bytes\n"
	1197	" - ppm manager : %d bytes\n"
	1198	" - kcm manager : %d bytes\n"
	1199	" - khm manager : %d bytes\n"
	1200	" - vmm manager : %d bytes\n"
	1201	" - gpt root : %d bytes\n"
	1202	" - list item : %d bytes\n"
	1203	" - xlist item : %d bytes\n"
	1204	" - spinlock : %d bytes\n"
	1205	" - remote spinlock : %d bytes\n"
	1206	" - rwlock : %d bytes\n"
	1207	" - remote rwlock : %d bytes\n",
[127]	1208	sizeof( thread_t ),
[68]	1209	sizeof( process_t ),
	1210	sizeof( cluster_t ),
	1211	sizeof( chdev_t ),
	1212	sizeof( core_t ),
	1213	sizeof( scheduler_t ),
[407]	1214	sizeof( remote_fifo_t ),
[68]	1215	sizeof( page_t ),
	1216	sizeof( mapper_t ),
	1217	sizeof( ppm_t ),
	1218	sizeof( kcm_t ),
	1219	sizeof( khm_t ),
	1220	sizeof( vmm_t ),
	1221	sizeof( gpt_t ),
	1222	sizeof( list_entry_t ),
	1223	sizeof( xlist_entry_t ),
	1224	sizeof( spinlock_t ),
	1225	sizeof( remote_spinlock_t ),
	1226	sizeof( rwlock_t ),
	1227	sizeof( remote_rwlock_t ));
[406]	1228	#endif
	1229
[1]	1230	}
	1231
[398]	1232	// each core activates its private TICK IRQ
	1233	dev_pic_enable_timer( CONFIG_SCHED_TICK_MS_PERIOD );
[14]	1234
[440]	1235	#if DEBUG_KERNEL_INIT
	1236	printk("\n[DBG] %s : thread %x on core[%x,%d] jumps to thread_idle_func() / cycle %d\n",
	1237	__FUNCTION__ , CURRENT_THREAD , local_cxy , core_lid , (uint32_t)hal_get_cycles() );
	1238	#endif
	1239
[407]	1240	// each core jump to thread_idle_func
[50]	1241	thread_idle_func();
[127]	1242	}
[14]	1243

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source: trunk/kernel/kern/kernel_init.c @ 490

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