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source: trunk/kernel/kern/kernel_init.c @ 433

Last change on this file since 433 was 428, checked in by alain, 7 years ago
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1	/*
2	* kernel_init.c - kernel parallel initialization
3	*
4	* Authors : Mohamed Lamine Karaoui (2015)
5	* Alain Greiner (2016,2017)
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
25	#include <kernel_config.h>
26	#include <errno.h>
27	#include <hal_types.h>
28	#include <hal_special.h>
29	#include <hal_context.h>
30	#include <hal_irqmask.h>
31	#include <hal_ppm.h>
32	#include <barrier.h>
33	#include <remote_barrier.h>
34	#include <remote_fifo.h>
35	#include <core.h>
36	#include <list.h>
37	#include <xlist.h>
38	#include <xhtab.h>
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>
47	#include <chdev.h>
48	#include <boot_info.h>
49	#include <dqdt.h>
50	#include <dev_mmc.h>
51	#include <dev_dma.h>
52	#include <dev_iob.h>
53	#include <dev_ioc.h>
54	#include <dev_txt.h>
55	#include <dev_pic.h>
56	#include <printk.h>
57	#include <vfs.h>
58	#include <devfs.h>
59	#include <mapper.h>
60
61	#define KERNEL_INIT_SYNCHRO 0xA5A5B5B5
62
63	///////////////////////////////////////////////////////////////////////////////////////////
64	// All the following global variables are replicated in all clusters.
65	// They are initialised by the kernel_init() function.
66	//
67	// WARNING : The section names have been defined to control the base addresses of the
68	// boot_info structure and the idle thread descriptors, through the kernel.ld script:
69	// - the boot_info structure is built by the bootloader, and used by kernel_init.
70	// it must be the first object in the kdata segment.
71	// - the array of idle threads descriptors must be placed on the first page boundary after
72	// the boot_info structure in the kdata segment.
73	///////////////////////////////////////////////////////////////////////////////////////////
74
75	// This variable defines the local boot_info structure
76	__attribute__((section(".kinfo")))
77	boot_info_t boot_info;
78
79	// This variable defines the "idle" threads descriptors array
80	__attribute__((section(".kidle")))
81	char idle_threads[CONFIG_THREAD_DESC_SIZE *
82	CONFIG_MAX_LOCAL_CORES] CONFIG_PPM_PAGE_ALIGNED;
83
84	// This variable defines the local cluster manager
85	__attribute__((section(".kdata")))
86	cluster_t cluster_manager CONFIG_CACHE_LINE_ALIGNED;
87
88	// This variable defines the TXT0 kernel terminal (TX only)
89	__attribute__((section(".kdata")))
90	chdev_t txt0_chdev CONFIG_CACHE_LINE_ALIGNED;
91
92	// This variables define the kernel process0 descriptor
93	__attribute__((section(".kdata")))
94	process_t process_zero CONFIG_CACHE_LINE_ALIGNED;
95
96	// This variable defines extended pointers on the distributed chdevs
97	__attribute__((section(".kdata")))
98	chdev_directory_t chdev_dir CONFIG_CACHE_LINE_ALIGNED;
99
100	// This variable contains the input IRQ indexes for the IOPIC controller
101	__attribute__((section(".kdata")))
102	iopic_input_t iopic_input CONFIG_CACHE_LINE_ALIGNED;
103
104	// This variable contains the input IRQ indexes for the LAPIC controller
105	__attribute__((section(".kdata")))
106	lapic_input_t lapic_input CONFIG_CACHE_LINE_ALIGNED;
107
108	// This variable defines the local cluster identifier
109	__attribute__((section(".kdata")))
110	cxy_t local_cxy CONFIG_CACHE_LINE_ALIGNED;
111
112	// This variable is used for CP0 cores synchronisation in kernel_init()
113	__attribute__((section(".kdata")))
114	remote_barrier_t global_barrier CONFIG_CACHE_LINE_ALIGNED;
115
116	// This variable is used for local cores synchronisation in kernel_init()
117	__attribute__((section(".kdata")))
118	barrier_t local_barrier CONFIG_CACHE_LINE_ALIGNED;
119
120	// This variable defines the array of supported File System contexts
121	__attribute__((section(".kdata")))
122	vfs_ctx_t fs_context[FS_TYPES_NR] CONFIG_CACHE_LINE_ALIGNED;
123
124
125	// TODO remove these debug variables used dans sys_read()
126
127	#if CONFIG_READ_DEBUG
128	uint32_t enter_sys_read;
129	uint32_t exit_sys_read;
130
131	uint32_t enter_devfs_move;
132	uint32_t exit_devfs_move;
133
134	uint32_t enter_txt_read;
135	uint32_t exit_txt_read;
136
137	uint32_t enter_chdev_cmd;
138	uint32_t exit_chdev_cmd;
139
140	uint32_t enter_chdev_server;
141	uint32_t exit_chdev_server;
142
143	uint32_t enter_tty_cmd;
144	uint32_t exit_tty_cmd;
145
146	uint32_t enter_tty_isr;
147	uint32_t exit_tty_isr;
148	#endif
149
150	///////////////////////////////////////////////////////////////////////////////////////////
151	// This function displays the ALMOS_MKH banner.
152	///////////////////////////////////////////////////////////////////////////////////////////
153	static void print_banner( uint32_t nclusters , uint32_t ncores )
154	{
155	printk("\n"
156	" _ __ __ _____ ______ __ __ _ __ _ _ \n"
157	" /\\ \| \| \| \\ / \| / ___ \\ / _____\| \| \\ / \| \| \| / / \| \| \| \| \n"
158	" / \\ \| \| \| \\/ \| \| / \\ \| \| / \| \\/ \| \| \|/ / \| \| \| \| \n"
159	" / /\\ \\ \| \| \| \|\\ /\| \| \| \| \| \| \| \|_____ ___ \| \|\\ /\| \| \| / \| \|___\| \| \n"
160	" / /__\\ \\ \| \| \| \| \\/ \| \| \| \| \| \| \\_____ \\ \|___\| \| \| \\/ \| \| \| \\ \| ___ \| \n"
161	" / ______ \\ \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|\\ \\ \| \| \| \| \n"
162	" / / \\ \\ \| \|____ \| \| \| \| \| \\___/ \| _____/ \| \| \| \| \| \| \| \\ \\ \| \| \| \| \n"
163	" /_/ \\_\\ \|______\| \|_\| \|_\| \\_____/ \|______/ \|_\| \|_\| \|_\| \\_\\ \|_\| \|_\| \n"
164	"\n\n\t\t Advanced Locality Management Operating System / Multi Kernel Hybrid\n"
165	"\n\n\t\t Version 0.0 / %d cluster(s) / %d core(s) per cluster / cycle %d\n\n",
166	nclusters , ncores , hal_time_stamp() );
167	}
168
169
170	///////////////////////////////////////////////////////////////////////////////////////////
171	// This function initializes the TXT0 chdev descriptor, that is the "kernel terminal",
172	// shared by all kernel instances for debug messages.
173	// It is a global variable (replicated in all clusters), because this terminal is used
174	// before the kmem allocator initialisation, but only the instance in cluster containing
175	// the calling core is registered in the "chdev_dir" directory.
176	// As this TXT0 chdev supports only the TXT_SYNC_WRITE command, we don't create
177	// a server thread, we don't allocate a WTI, and we don't initialize the waiting queue.
178	///////////////////////////////////////////////////////////////////////////////////////////
179	// @ info : pointer on the local boot-info structure.
180	///////////////////////////////////////////////////////////////////////////////////////////
181	static void txt0_device_init( boot_info_t * info )
182	{
183	boot_device_t * dev_tbl; // pointer on array of devices in boot_info
184	uint32_t dev_nr; // actual number of devices in this cluster
185	xptr_t base; // remote pointer on segment base
186	uint32_t func; // device functional index
187	uint32_t impl; // device implementation index
188	uint32_t i; // device index in dev_tbl
189	uint32_t x; // X cluster coordinate
190	uint32_t y; // Y cluster coordinate
191	uint32_t channels; // number of channels
192
193	// get number of peripherals and base of devices array from boot_info
194	dev_nr = info->ext_dev_nr;
195	dev_tbl = info->ext_dev;
196
197	// loop on external peripherals to find TXT device
198	for( i = 0 ; i < dev_nr ; i++ )
199	{
200	base = dev_tbl[i].base;
201	func = FUNC_FROM_TYPE( dev_tbl[i].type );
202	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
203	channels = dev_tbl[i].channels;
204
205	if (func == DEV_FUNC_TXT )
206	{
207	assert( (channels > 0) , __FUNCTION__ , "number of TXT channels cannot be 0\n");
208
209	// initializes TXT_TX[0] chdev
210	txt0_chdev.func = func;
211	txt0_chdev.impl = impl;
212	txt0_chdev.channel = 0;
213	txt0_chdev.base = base;
214	txt0_chdev.is_rx = false;
215
216	// initializes lock
217	remote_spinlock_init( XPTR( local_cxy , &txt0_chdev.wait_lock ) );
218
219	// TXT specific initialisation:
220	// no server thread & no IRQ routing for channel 0
221	dev_txt_init( &txt0_chdev );
222
223	// register the TXT0 in all chdev_dir[x][y] structures
224	for( x = 0 ; x < info->x_size ; x++ )
225	{
226	for( y = 0 ; y < info->y_size ; y++ )
227	{
228	cxy_t cxy = (x<<info->y_width) + y;
229	hal_remote_swd( XPTR( cxy , &chdev_dir.txt_tx[0] ) ,
230	XPTR( local_cxy , &txt0_chdev ) );
231	}
232	}
233	}
234	} // end loop on devices
235	} // end txt0_device_init()
236
237	///////////////////////////////////////////////////////////////////////////////////////////
238	// This function allocates memory and initializes the chdev descriptors for the internal
239	// peripherals contained in the local cluster, other than the LAPIC, as specified by
240	// the boot_info, including the linking with the driver for the specified implementation.
241	// The relevant entries in all copies of the devices directory are initialised.
242	///////////////////////////////////////////////////////////////////////////////////////////
243	// @ info : pointer on the local boot-info structure.
244	///////////////////////////////////////////////////////////////////////////////////////////
245	static void internal_devices_init( boot_info_t * info )
246	{
247	boot_device_t * dev_tbl; // pointer on array of internaldevices in boot_info
248	uint32_t dev_nr; // actual number of devices in this cluster
249	xptr_t base; // remote pointer on segment base
250	uint32_t func; // device functionnal index
251	uint32_t impl; // device implementation index
252	uint32_t i; // device index in dev_tbl
253	uint32_t x; // X cluster coordinate
254	uint32_t y; // Y cluster coordinate
255	uint32_t channels; // number of channels
256	uint32_t channel; // channel index
257	chdev_t * chdev_ptr; // local pointer on created chdev
258
259	// get number of internal peripherals and base from boot_info
260	dev_nr = info->int_dev_nr;
261	dev_tbl = info->int_dev;
262
263	// loop on internal peripherals
264	for( i = 0 ; i < dev_nr ; i++ )
265	{
266	base = dev_tbl[i].base;
267	channels = dev_tbl[i].channels;
268	func = FUNC_FROM_TYPE( dev_tbl[i].type );
269	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
270
271	//////////////////////////
272	if( func == DEV_FUNC_MMC )
273	{
274	assert( (channels == 1) , __FUNCTION__ ,
275	"MMC device must be single channel\n" );
276
277	// create chdev in local cluster
278	chdev_ptr = chdev_create( func,
279	impl,
280	0, // channel
281	false, // direction
282	base );
283
284	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
285	"cannot allocate memory for MMC chdev\n" );
286
287	// make MMC specific initialisation
288	dev_mmc_init( chdev_ptr );
289
290	// set the MMC field in all chdev_dir[x][y] structures
291	for( x = 0 ; x < info->x_size ; x++ )
292	{
293	for( y = 0 ; y < info->y_size ; y++ )
294	{
295	cxy_t cxy = (x<<info->y_width) + y;
296	hal_remote_swd( XPTR( cxy , &chdev_dir.mmc[local_cxy] ),
297	XPTR( local_cxy , chdev_ptr ) );
298	}
299	}
300
301	#if( CONFIG_KINIT_DEBUG & 0x1 )
302	if( hal_time_stamp() > CONFIG_KINIT_DEBUG )
303	printk("\n[DBG] %s : created MMC in cluster %x / chdev = %x\n",
304	__FUNCTION__ , local_cxy , chdev_ptr );
305	#endif
306	}
307	///////////////////////////////
308	else if( func == DEV_FUNC_DMA )
309	{
310	// create one chdev per channel in local cluster
311	for( channel = 0 ; channel < channels ; channel++ )
312	{
313	// create chdev[channel] in local cluster
314	chdev_ptr = chdev_create( func,
315	impl,
316	channel,
317	false, // direction
318	base );
319
320	assert( (chdev_ptr != NULL) , __FUNCTION__ ,
321	"cannot allocate memory for DMA chdev" );
322
323	// make DMA specific initialisation
324	dev_dma_init( chdev_ptr );
325
326	// initialize only the DMA[channel] field in the local chdev_dir[x][y]
327	// structure because the DMA device is not remotely accessible.
328	chdev_dir.dma[channel] = XPTR( local_cxy , chdev_ptr );
329
330	#if( CONFIG_KINIT_DEBUG & 0x1 )
331	if( hal_time_stamp() > CONFIG_KINIT_DEBUG )
332	printk("\n[DBG] %s : created DMA[%d] in cluster %x / chdev = %x\n",
333	__FUNCTION__ , channel , local_cxy , chdev_ptr );
334	#endif
335	}
336	}
337	}
338	} // end internal_devices_init()
339
340	///////////////////////////////////////////////////////////////////////////////////////////
341	// This function allocates memory and initializes the chdev descriptors for the
342	// external (shared) peripherals other than the IOPIC, as specified by the boot_info.
343	// This includes the dynamic linking with the driver for the specified implementation.
344	// These chdev descriptors are distributed on all clusters, using a modulo on a global
345	// index, identically computed in all clusters.
346	// This function is executed in all clusters by the CP0 core, that computes a global index
347	// for all external chdevs. Each CP0 core creates only the chdevs that must be placed in
348	// the local cluster, because the global index matches the local index.
349	// The relevant entries in all copies of the devices directory are initialised.
350	///////////////////////////////////////////////////////////////////////////////////////////
351	// @ info : pointer on the local boot-info structure.
352	///////////////////////////////////////////////////////////////////////////////////////////
353	static void external_devices_init( boot_info_t * info )
354	{
355	boot_device_t * dev_tbl; // pointer on array of external devices in boot_info
356	uint32_t dev_nr; // actual number of external devices
357	xptr_t base; // remote pointer on segment base
358	uint32_t func; // device functionnal index
359	uint32_t impl; // device implementation index
360	uint32_t i; // device index in dev_tbl
361	uint32_t x; // X cluster coordinate
362	uint32_t y; // Y cluster coordinate
363	uint32_t channels; // number of channels
364	uint32_t channel; // channel index
365	uint32_t directions; // number of directions (1 or 2)
366	uint32_t rx; // direction index (0 or 1)
367	chdev_t * chdev; // local pointer on one channel_device descriptor
368	uint32_t ext_chdev_gid; // global index of external chdev
369
370	// get number of peripherals and base of devices array from boot_info
371	dev_nr = info->ext_dev_nr;
372	dev_tbl = info->ext_dev;
373
374	// initializes global index (PIC is already placed in cluster 0
375	ext_chdev_gid = 1;
376
377	// loop on external peripherals
378	for( i = 0 ; i < dev_nr ; i++ )
379	{
380	base = dev_tbl[i].base;
381	channels = dev_tbl[i].channels;
382	func = FUNC_FROM_TYPE( dev_tbl[i].type );
383	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
384
385	// There is one chdev per direction for NIC and for TXT
386	if((func == DEV_FUNC_NIC) \|\| (func == DEV_FUNC_TXT)) directions = 2;
387	else directions = 1;
388
389	// do nothing for ROM, that does not require a device descriptor.
390	if( func == DEV_FUNC_ROM ) continue;
391
392	// do nothing for PIC, that is already initialized
393	if( func == DEV_FUNC_PIC ) continue;
394
395	// check PIC device initialized
396	assert( (chdev_dir.pic != XPTR_NULL ) , __FUNCTION__ ,
397	"PIC device must be initialized before other devices\n" );
398
399	// check external device functionnal type
400	assert( ( (func == DEV_FUNC_IOB) \|\|
401	(func == DEV_FUNC_IOC) \|\|
402	(func == DEV_FUNC_TXT) \|\|
403	(func == DEV_FUNC_NIC) \|\|
404	(func == DEV_FUNC_FBF) ) , __FUNCTION__ ,
405	"undefined external peripheral type\n" );
406
407	// loops on channels
408	for( channel = 0 ; channel < channels ; channel++ )
409	{
410	// loop on directions
411	for( rx = 0 ; rx < directions ; rx++ )
412	{
413	// skip TXT_TX[0] chdev that has already been created & registered
414	if( (func == DEV_FUNC_TXT) && (channel == 0) && (rx == 0) ) continue;
415
416	// compute target cluster for chdev[func,channel,direction]
417	uint32_t offset = ext_chdev_gid % ( info->x_size * info->y_size );
418	uint32_t cx = offset / info->y_size;
419	uint32_t cy = offset % info->y_size;
420	uint32_t target_cxy = (cx<<info->y_width) + cy;
421
422	// allocate and initialize a local chdev
423	// when local cluster matches target cluster
424	if( target_cxy == local_cxy )
425	{
426	chdev = chdev_create( func,
427	impl,
428	channel,
429	rx, // direction
430	base );
431
432	assert( (chdev != NULL), __FUNCTION__ ,
433	"cannot allocate external device" );
434
435	// make device type specific initialisation
436	if ( func == DEV_FUNC_IOB ) dev_iob_init( chdev );
437	else if( func == DEV_FUNC_IOC ) dev_ioc_init( chdev );
438	else if( func == DEV_FUNC_TXT ) dev_txt_init( chdev );
439	else if( func == DEV_FUNC_NIC ) dev_nic_init( chdev );
440	else if( func == DEV_FUNC_FBF ) dev_fbf_init( chdev );
441
442	// all external (shared) devices are remotely accessible
443	// initialize the replicated chdev_dir[x][y] structures
444	// defining the extended pointers on chdev descriptors
445	xptr_t * entry;
446
447	if(func==DEV_FUNC_IOB ) entry = &chdev_dir.iob;
448	if(func==DEV_FUNC_IOC ) entry = &chdev_dir.ioc[channel];
449	if(func==DEV_FUNC_FBF ) entry = &chdev_dir.fbf[channel];
450	if((func==DEV_FUNC_TXT) && (rx==0)) entry = &chdev_dir.txt_tx[channel];
451	if((func==DEV_FUNC_TXT) && (rx==1)) entry = &chdev_dir.txt_rx[channel];
452	if((func==DEV_FUNC_NIC) && (rx==0)) entry = &chdev_dir.nic_tx[channel];
453	if((func==DEV_FUNC_NIC) && (rx==1)) entry = &chdev_dir.nic_rx[channel];
454
455	for( x = 0 ; x < info->x_size ; x++ )
456	{
457	for( y = 0 ; y < info->y_size ; y++ )
458	{
459	cxy_t cxy = (x<<info->y_width) + y;
460	hal_remote_swd( XPTR( cxy , entry ),
461	XPTR( local_cxy , chdev ) );
462	}
463	}
464
465	#if( CONFIG_KINIT_DEBUG & 0x1 )
466	if( hal_time_stamp() > CONFIG_KINIT_DEBUG )
467	printk("\n[DBG] %s : create chdev %s / channel = %d / rx = %d / cluster %x / chdev = %x\n",
468	__FUNCTION__ , chdev_func_str( func ), channel , rx , local_cxy , chdev );
469	#endif
470	} // end if match
471
472	// increment chdev global index (matching or not)
473	ext_chdev_gid++;
474
475	} // end loop on directions
476	} // end loop on channels
477	} // end loop on devices
478	} // end external_devices_init()
479
480	///////////////////////////////////////////////////////////////////////////////////////////
481	// This function is called by CP0 in cluster 0 to allocate memory and initialize the PIC
482	// device, namely the informations attached to the external IOPIC controller, that
483	// must be replicated in all clusters (struct iopic_input).
484	// This initialisation must be done before other devices initialisation because the IRQ
485	// routing infrastructure is required for both internal and external devices init.
486	///////////////////////////////////////////////////////////////////////////////////////////
487	// @ info : pointer on the local boot-info structure.
488	///////////////////////////////////////////////////////////////////////////////////////////
489	static void iopic_init( boot_info_t * info )
490	{
491	boot_device_t * dev_tbl; // pointer on boot_info external devices array
492	uint32_t dev_nr; // actual number of external devices
493	xptr_t base; // remote pointer on segment base
494	uint32_t func; // device functionnal index
495	uint32_t impl; // device implementation index
496	uint32_t i; // device index in dev_tbl
497	uint32_t x; // cluster X coordinate
498	uint32_t y; // cluster Y coordinate
499	bool_t found; // IOPIC found
500	chdev_t * chdev; // pointer on PIC chdev descriptor
501
502	// get number of external peripherals and base of array from boot_info
503	dev_nr = info->ext_dev_nr;
504	dev_tbl = info->ext_dev;
505
506	// loop on external peripherals to get the IOPIC
507	for( i = 0 , found = false ; i < dev_nr ; i++ )
508	{
509	func = FUNC_FROM_TYPE( dev_tbl[i].type );
510
511	if( func == DEV_FUNC_PIC )
512	{
513	base = dev_tbl[i].base;
514	impl = IMPL_FROM_TYPE( dev_tbl[i].type );
515	found = true;
516	break;
517	}
518	}
519
520	assert( found , __FUNCTION__ , "PIC device not found\n" );
521
522	// allocate and initialize the PIC chdev in cluster 0
523	chdev = chdev_create( DEV_FUNC_PIC,
524	impl,
525	0, // channel
526	0, // direction,
527	base );
528
529	assert( (chdev != NULL), __FUNCTION__ , "no memory for PIC chdev\n" );
530
531	// make PIC device type specific initialisation
532	dev_pic_init( chdev );
533
534	// register, in all clusters, the extended pointer
535	// on PIC chdev in "chdev_dir" array
536	xptr_t * entry = &chdev_dir.pic;
537
538	for( x = 0 ; x < info->x_size ; x++ )
539	{
540	for( y = 0 ; y < info->y_size ; y++ )
541	{
542	cxy_t cxy = (x<<info->y_width) + y;
543	hal_remote_swd( XPTR( cxy , entry ) ,
544	XPTR( local_cxy , chdev ) );
545	}
546	}
547
548	// initialize, in all clusters, the "iopic_input" structure
549	// defining how external IRQs are connected to IOPIC
550
551	// register default value for unused inputs
552	for( x = 0 ; x < info->x_size ; x++ )
553	{
554	for( y = 0 ; y < info->y_size ; y++ )
555	{
556	cxy_t cxy = (x<<info->y_width) + y;
557	hal_remote_memset( XPTR( cxy , &iopic_input ) , 0xFF , sizeof(iopic_input_t) );
558	}
559	}
560
561	// register input IRQ index for valid inputs
562	uint32_t id; // input IRQ index
563	uint8_t valid; // input IRQ is connected
564	uint32_t type; // source device type
565	uint8_t channel; // source device channel
566	uint8_t is_rx; // source device direction
567	uint32_t * ptr; // local pointer on one field in iopic_input stucture
568
569	for( id = 0 ; id < CONFIG_MAX_EXTERNAL_IRQS ; id++ )
570	{
571	valid = dev_tbl[i].irq[id].valid;
572	type = dev_tbl[i].irq[id].dev_type;
573	channel = dev_tbl[i].irq[id].channel;
574	is_rx = dev_tbl[i].irq[id].is_rx;
575	func = FUNC_FROM_TYPE( type );
576
577	// get pointer on relevant field in iopic_input
578	if( valid )
579	{
580	if ( func == DEV_FUNC_IOC ) ptr = &iopic_input.ioc[channel];
581	else if((func == DEV_FUNC_TXT) && (is_rx == 0)) ptr = &iopic_input.txt_tx[channel];
582	else if((func == DEV_FUNC_TXT) && (is_rx != 0)) ptr = &iopic_input.txt_rx[channel];
583	else if((func == DEV_FUNC_NIC) && (is_rx == 0)) ptr = &iopic_input.nic_tx[channel];
584	else if((func == DEV_FUNC_NIC) && (is_rx != 0)) ptr = &iopic_input.nic_rx[channel];
585	else if( func == DEV_FUNC_IOB ) ptr = &iopic_input.iob;
586	else assert( false , __FUNCTION__ , "illegal source device for IOPIC input" );
587
588	// set one entry in all "iopic_input" structures
589	for( x = 0 ; x < info->x_size ; x++ )
590	{
591	for( y = 0 ; y < info->y_size ; y++ )
592	{
593	cxy_t cxy = (x<<info->y_width) + y;
594	hal_remote_swd( XPTR( cxy , ptr ) , id );
595	}
596	}
597	}
598	}
599
600	#if( CONFIG_KINIT_DEBUG & 0x1 )
601	if( hal_time_stamp() > CONFIG_KINIT_DEBUG )
602	{
603	printk("\n[DBG] %s created PIC chdev in cluster %x at cycle %d\n",
604	__FUNCTION__ , local_cxy , (uint32_t)hal_time_stamp() );
605	dev_pic_inputs_display();
606	}
607	#endif
608
609	} // end iopic_init()
610
611	///////////////////////////////////////////////////////////////////////////////////////////
612	// This function is called by all CP0s in all cluster to complete the PIC device
613	// initialisation, namely the informations attached to the LAPIC controller.
614	// This initialisation must be done after the IOPIC initialisation, but before other
615	// devices initialisation because the IRQ routing infrastructure is required for both
616	// internal and external devices initialisation.
617	///////////////////////////////////////////////////////////////////////////////////////////
618	// @ info : pointer on the local boot-info structure.
619	///////////////////////////////////////////////////////////////////////////////////////////
620	static void lapic_init( boot_info_t * info )
621	{
622	boot_device_t * dev_tbl; // pointer on boot_info internal devices array
623	uint32_t dev_nr; // number of internal devices
624	uint32_t i; // device index in dev_tbl
625	xptr_t base; // remote pointer on segment base
626	uint32_t func; // device functionnal type in boot_info
627	bool_t found; // LAPIC found
628
629	// get number of internal peripherals and base
630	dev_nr = info->int_dev_nr;
631	dev_tbl = info->int_dev;
632
633	// loop on internal peripherals to get the lapic device
634	for( i = 0 , found = false ; i < dev_nr ; i++ )
635	{
636	func = FUNC_FROM_TYPE( dev_tbl[i].type );
637
638	if( func == DEV_FUNC_ICU )
639	{
640	base = dev_tbl[i].base;
641	found = true;
642	break;
643	}
644	}
645
646	// if the LAPIC controller is not defined in the boot_info,
647	// we simply don't initialize the PIC extensions in the kernel,
648	// making the assumption that the LAPIC related informations
649	// are hidden in the hardware specific PIC driver.
650	if( found )
651	{
652	// initialise the PIC extensions for
653	// the core descriptor and core manager extensions
654	dev_pic_extend_init( (uint32_t *)GET_PTR( base ) );
655
656	// initialize the "lapic_input" structure
657	// defining how internal IRQs are connected to LAPIC
658	uint32_t id;
659	uint8_t valid;
660	uint8_t channel;
661	uint32_t func;
662
663	for( id = 0 ; id < CONFIG_MAX_INTERNAL_IRQS ; id++ )
664	{
665	valid = dev_tbl[i].irq[id].valid;
666	func = FUNC_FROM_TYPE( dev_tbl[i].irq[id].dev_type );
667	channel = dev_tbl[i].irq[id].channel;
668
669	if( valid ) // only valid local IRQs are registered
670	{
671	if ( func == DEV_FUNC_MMC ) lapic_input.mmc = id;
672	else if( func == DEV_FUNC_DMA ) lapic_input.dma[channel] = id;
673	else assert( false , __FUNCTION__ , "illegal source device for LAPIC input" );
674	}
675	}
676	}
677	} // end lapic_init()
678
679	///////////////////////////////////////////////////////////////////////////////////////////
680	// This static function returns the identifiers of the calling core.
681	///////////////////////////////////////////////////////////////////////////////////////////
682	// @ info : pointer on boot_info structure.
683	// @ lid : [out] core local index in cluster.
684	// @ cxy : [out] cluster identifier.
685	// @ lid : [out] core global identifier (hardware).
686	// @ return 0 if success / return EINVAL if not found.
687	///////////////////////////////////////////////////////////////////////////////////////////
688	static error_t get_core_identifiers( boot_info_t * info,
689	lid_t * lid,
690	cxy_t * cxy,
691	gid_t * gid )
692	{
693	uint32_t i;
694	gid_t global_id;
695
696	// get global identifier from hardware register
697	global_id = hal_get_gid();
698
699	// makes an associative search in boot_info to get (cxy,lid) from global_id
700	for( i = 0 ; i < info->cores_nr ; i++ )
701	{
702	if( global_id == info->core[i].gid )
703	{
704	*lid = info->core[i].lid;
705	*cxy = info->core[i].cxy;
706	*gid = global_id;
707	return 0;
708	}
709	}
710	return EINVAL;
711	}
712
713	///////////////////////////////////////////////////////////////////////////////////////////
714	// This function is the entry point for the kernel initialisation.
715	// It is executed by all cores in all clusters, but only core[0], called CP0,
716	// initializes the shared resources such as the cluster manager, or the local peripherals.
717	// To comply with the multi-kernels paradigm, it accesses only local cluster memory, using
718	// only information contained in the local boot_info_t structure, set by the bootloader.
719	// Only CP0 in cluster 0 print the log messages.
720	///////////////////////////////////////////////////////////////////////////////////////////
721	// @ info : pointer on the local boot-info structure.
722	///////////////////////////////////////////////////////////////////////////////////////////
723	void kernel_init( boot_info_t * info )
724	{
725	lid_t core_lid = -1; // running core local index
726	cxy_t core_cxy = -1; // running core cluster identifier
727	gid_t core_gid; // running core hardware identifier
728	cluster_t * cluster; // pointer on local cluster manager
729	core_t * core; // pointer on running core descriptor
730	thread_t * thread; // pointer on idle thread descriptor
731
732	xptr_t vfs_root_inode_xp; // extended pointer on VFS root inode
733	xptr_t devfs_dev_inode_xp; // extended pointer on DEVFS dev inode
734	xptr_t devfs_external_inode_xp; // extended pointer on DEVFS external inode
735	xptr_t devfs_internal_inode_xp; // extended pointer on DEVFS internal inode
736
737	error_t error;
738	reg_t status; // running core status register
739
740	cxy_t io_cxy = info->io_cxy;
741
742	assert( (io_cxy == ((info->x_size - 1)<<(info->y_width)) + (info->y_size - 1)) ,
743	__FUNCTION__ , "illegal IO cluter identifier\n" );
744
745	/////////////////////////////////////////////////////////////////////////////////
746	// STEP 0 : Each core get its core identifier from boot_info, and makes
747	// a partial initialisation of its private idle thread descriptor.
748	// CP0 initializes the "local_cxy" global variable.
749	// CP0 in cluster IO initializes the TXT0 chdev to print log messages.
750	/////////////////////////////////////////////////////////////////////////////////
751
752	error = get_core_identifiers( info,
753	&core_lid,
754	&core_cxy,
755	&core_gid );
756
757	// CP0 initializes cluster identifier
758	if( core_lid == 0 ) local_cxy = info->cxy;
759
760	// each core gets a pointer on its private idle thread descriptor
761	thread = (thread_t )( idle_threads + (core_lid CONFIG_THREAD_DESC_SIZE) );
762
763	// each core registers this thread pointer in hardware register
764	hal_set_current_thread( thread );
765
766	// each core register core descriptor pointer in idle thread descriptor
767	thread->core = &LOCAL_CLUSTER->core_tbl[core_lid];
768
769	#if CONFIG_LOCKS_DEBUG
770	list_root_init( &thread->locks_root );
771	xlist_root_init( XPTR( local_cxy , &thread->xlocks_root ) );
772	#endif
773
774	// CP0 in I/O cluster initialises TXT0 chdev descriptor
775	if( (core_lid == 0) && (core_cxy == io_cxy) ) txt0_device_init( info );
776
777	/////////////////////////////////////////////////////////////////////////////////
778	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
779	(info->x_size * info->y_size) );
780	barrier_wait( &local_barrier , info->cores_nr );
781
782	if( (core_lid == 0) && (local_cxy == 0) )
783	kinit_dmsg("\n[DBG] %s : exit barrier 0 : TXT0 initialized / cycle %d\n",
784	__FUNCTION__, hal_time_stamp() );
785
786	/////////////////////////////////////////////////////////////////////////////
787	// STEP 1 : all cores check core identifier.
788	// CP0 initializes the local cluster manager.
789	// This includes the memory allocators.
790	/////////////////////////////////////////////////////////////////////////////
791
792	// all cores check identifiers
793	if( error )
794	{
795	assert( false , __FUNCTION__ ,
796	"illegal core identifiers gid = %x / cxy = %x / lid = %d",
797	core_lid , core_cxy , core_lid );
798	}
799
800	// CP0 initializes cluster manager
801	if( core_lid == 0 )
802	{
803	error = cluster_init( info );
804
805	if( error )
806	{
807	assert( false , __FUNCTION__ ,
808	"cannot initialise cluster %x", local_cxy );
809	}
810	}
811
812	/////////////////////////////////////////////////////////////////////////////////
813	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
814	(info->x_size * info->y_size) );
815	barrier_wait( &local_barrier , info->cores_nr );
816	/////////////////////////////////////////////////////////////////////////////////
817
818	if( (core_lid == 0) && (local_cxy == 0) )
819	kinit_dmsg("\n[DBG] %s : exit barrier 1 : clusters initialised / cycle %d\n",
820	__FUNCTION__, hal_time_stamp() );
821
822	/////////////////////////////////////////////////////////////////////////////////
823	// STEP 2 : CP0 initializes the process_zero descriptor.
824	// CP0 in cluster 0 initializes the IOPIC device.
825	/////////////////////////////////////////////////////////////////////////////////
826
827	// all cores get pointer on local cluster manager & core descriptor
828	cluster = &cluster_manager;
829	core = &cluster->core_tbl[core_lid];
830
831	// all CP0s initialize the process_zero descriptor
832	if( core_lid == 0 ) process_zero_create( &process_zero );
833
834	// CP0 in cluster 0 initializes the PIC chdev,
835	if( (core_lid == 0) && (local_cxy == 0) ) iopic_init( info );
836
837	////////////////////////////////////////////////////////////////////////////////
838	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
839	(info->x_size * info->y_size) );
840	barrier_wait( &local_barrier , info->cores_nr );
841	////////////////////////////////////////////////////////////////////////////////
842
843	if( (core_lid == 0) && (local_cxy == 0) )
844	kinit_dmsg("\n[DBG] %s : exit barrier 2 : PIC initialised / cycle %d\n",
845	__FUNCTION__, hal_time_stamp() );
846
847	////////////////////////////////////////////////////////////////////////////////
848	// STEP 3 : CP0 initializes the distibuted LAPIC descriptor.
849	// CP0 initializes the internal chdev descriptors
850	// CP0 initialize the local external chdev descriptors
851	////////////////////////////////////////////////////////////////////////////////
852
853	// all CP0s initialize their local LAPIC extension,
854	if( core_lid == 0 ) lapic_init( info );
855
856	// CP0 scan the internal (private) peripherals,
857	// and allocates memory for the corresponding chdev descriptors.
858	if( core_lid == 0 ) internal_devices_init( info );
859
860
861	// All CP0s contribute to initialise external peripheral chdev descriptors.
862	// Each CP0[cxy] scan the set of external (shared) peripherals (but the TXT0),
863	// and allocates memory for the chdev descriptors that must be placed
864	// on the (cxy) cluster according to the global index value.
865
866	if( core_lid == 0 ) external_devices_init( info );
867
868	/////////////////////////////////////////////////////////////////////////////////
869	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
870	(info->x_size * info->y_size) );
871	barrier_wait( &local_barrier , info->cores_nr );
872	/////////////////////////////////////////////////////////////////////////////////
873
874	if( (core_lid == 0) && (local_cxy == 0) )
875	kinit_dmsg("\n[DBG] %s : exit barrier 3 : all chdev initialised / cycle %d\n",
876	__FUNCTION__, hal_time_stamp());
877
878	/////////////////////////////////////////////////////////////////////////////////
879	// STEP 4 : All cores enable IPI (Inter Procesor Interrupt),
880	// Alh cores initialize IDLE thread.
881	// Only CP0 in cluster 0 creates the VFS root inode.
882	// It access the boot device to initialize the file system context.
883	/////////////////////////////////////////////////////////////////////////////////
884
885	#if CONFIG_KINIT_DEBUG
886	chdev_dir_display();
887	#endif
888
889	// All cores enable the shared IPI channel
890	dev_pic_enable_ipi();
891	hal_enable_irq( &status );
892
893	// all cores initialize the idle thread descriptor
894	error = thread_kernel_init( thread,
895	THREAD_IDLE,
896	&thread_idle_func,
897	NULL,
898	core_lid );
899	if( error )
900	{
901	assert( false , __FUNCTION__ ,
902	"core[%x][%d] cannot initialize idle thread", local_cxy , core_lid );
903	}
904
905	// all cores unblock idle thread, and register it in scheduler
906	thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL );
907	core->scheduler.idle = thread;
908
909	#if CONFIG_KINIT_DEBUG
910	sched_display( core_lid );
911	#endif
912
913	// CPO in cluster 0 creates the VFS root
914	if( (core_lid == 0) && (local_cxy == 0 ) )
915	{
916	vfs_root_inode_xp = XPTR_NULL;
917
918	// File System must be FATFS in this implementation,
919	// but other File System can be introduced here
920	if( CONFIG_VFS_ROOT_IS_FATFS )
921	{
922	// 1. allocate memory for FATFS context in cluster 0
923	fatfs_ctx_t * fatfs_ctx = fatfs_ctx_alloc();
924
925	assert( (fatfs_ctx != NULL) , __FUNCTION__ ,
926	"cannot create FATFS context in cluster 0\n" );
927
928	// 2. access boot device to initialize FATFS context
929	fatfs_ctx_init( fatfs_ctx );
930
931	// 3. get various informations from FATFS context
932	uint32_t root_dir_cluster = fatfs_ctx->root_dir_cluster;
933	uint32_t cluster_size = fatfs_ctx->bytes_per_sector *
934	fatfs_ctx->sectors_per_cluster;
935	uint32_t total_clusters = fatfs_ctx->fat_sectors_count << 7;
936
937	// 4. create VFS root inode in cluster 0
938	error = vfs_inode_create( XPTR_NULL, // dentry_xp
939	FS_TYPE_FATFS, // fs_type
940	INODE_TYPE_DIR, // inode_type
941	(void *)(intptr_t)root_dir_cluster, // extend
942	0, // attr
943	0, // rights
944	0, // uid
945	0, // gid
946	&vfs_root_inode_xp ); // return
947
948	assert( (error == 0) , __FUNCTION__ ,
949	"cannot create VFS root inode\n" );
950
951	// 5. initialize VFS context for FAT in cluster 0
952	vfs_ctx_init( FS_TYPE_FATFS, // file system type
953	0, // attributes
954	total_clusters,
955	cluster_size,
956	vfs_root_inode_xp, // VFS root
957	fatfs_ctx ); // extend
958
959	// 6. check initialisation
960	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
961	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
962	__FUNCTION__ , "illegal value for FATFS context in cluster %x\n", local_cxy );
963	}
964	else
965	{
966	assert( false , __FUNCTION__ ,
967	"root FS must be FATFS" );
968	}
969
970	// register VFS root inode in process_zero descriptor of cluster 0
971	process_zero.vfs_root_xp = vfs_root_inode_xp;
972	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
973	}
974
975	/////////////////////////////////////////////////////////////////////////////////
976	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
977	(info->x_size * info->y_size) );
978	barrier_wait( &local_barrier , info->cores_nr );
979	/////////////////////////////////////////////////////////////////////////////////
980
981	if( (core_lid == 0) && (local_cxy == 0) )
982	kinit_dmsg("\n[DBG] %s : exit barrier 4 : VFS_root = %l in cluster 0 / cycle %d\n",
983	__FUNCTION__, vfs_root_inode_xp , hal_time_stamp());
984
985	/////////////////////////////////////////////////////////////////////////////////
986	// STEP 5 : Other CP0s allocate memory for the selected FS context,
987	// and initialise both the local FS context and the local VFS context
988	// from values stored in cluster 0.
989	// They get the VFS root inode extended pointer from cluster 0.
990	/////////////////////////////////////////////////////////////////////////////////
991
992	if( (core_lid == 0) && (local_cxy != 0) )
993	{
994	// File System must be FATFS in this implementation,
995	// but other File System can be introduced here
996	if( CONFIG_VFS_ROOT_IS_FATFS )
997	{
998	// 1. allocate memory for local FATFS context
999	fatfs_ctx_t * local_fatfs_ctx = fatfs_ctx_alloc();
1000
1001	assert( (local_fatfs_ctx != NULL) , __FUNCTION__ ,
1002	"cannot create FATFS context in cluster %x\n", local_cxy );
1003
1004	// 2. get local pointer on VFS context for FATFS
1005	vfs_ctx_t * vfs_ctx = &fs_context[FS_TYPE_FATFS];
1006
1007	// 3. get local pointer on FATFS context in cluster 0
1008	fatfs_ctx_t * remote_fatfs_ctx = hal_remote_lpt( XPTR( 0 , &vfs_ctx->extend ) );
1009
1010	// 4. copy FATFS context from cluster 0 to local cluster
1011	hal_remote_memcpy( XPTR( local_cxy , local_fatfs_ctx ),
1012	XPTR( 0 , remote_fatfs_ctx ), sizeof(fatfs_ctx_t) );
1013
1014	// 5. copy VFS context from cluster 0 to local cluster
1015	hal_remote_memcpy( XPTR( local_cxy , vfs_ctx ),
1016	XPTR( 0 , vfs_ctx ), sizeof(vfs_ctx_t) );
1017
1018	// 6. update extend field in local copy of VFS context
1019	vfs_ctx->extend = local_fatfs_ctx;
1020
1021	// 7. check initialisation
1022	assert( (((fatfs_ctx_t *)vfs_ctx->extend)->sectors_per_cluster == 8),
1023	__FUNCTION__ , "illegal value for FATFS context in cluster %x\n", local_cxy );
1024	}
1025
1026	// get extended pointer on VFS root inode from cluster 0
1027	vfs_root_inode_xp = hal_remote_lwd( XPTR( 0 , &process_zero.vfs_root_xp ) );
1028
1029	// update local process_zero descriptor
1030	process_zero.vfs_root_xp = vfs_root_inode_xp;
1031	process_zero.vfs_cwd_xp = vfs_root_inode_xp;
1032	}
1033
1034	/////////////////////////////////////////////////////////////////////////////////
1035	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
1036	(info->x_size * info->y_size) );
1037	barrier_wait( &local_barrier , info->cores_nr );
1038	/////////////////////////////////////////////////////////////////////////////////
1039
1040	if( (core_lid == 0) && (local_cxy == 0) )
1041	kinit_dmsg("\n[DBG] %s : exit barrier 5 : VFS_root = %l in cluster IO / cycle %d\n",
1042	__FUNCTION__, vfs_root_inode_xp , hal_time_stamp() );
1043
1044	/////////////////////////////////////////////////////////////////////////////////
1045	// STEP 6 : CP0 in cluster IO makes the global DEVFS tree initialisation:
1046	// It creates the DEVFS directory "dev", and the DEVFS "external"
1047	// directory in cluster IO and mount these inodes into VFS.
1048	/////////////////////////////////////////////////////////////////////////////////
1049
1050	if( (core_lid == 0) && (local_cxy == io_cxy) )
1051	{
1052	// create "dev" and "external" directories.
1053	devfs_global_init( process_zero.vfs_root_xp,
1054	&devfs_dev_inode_xp,
1055	&devfs_external_inode_xp );
1056
1057	// creates the DEVFS context in cluster IO
1058	devfs_ctx_t * devfs_ctx = devfs_ctx_alloc();
1059
1060	assert( (devfs_ctx != NULL) , __FUNCTION__ ,
1061	"cannot create DEVFS context in cluster IO\n");
1062
1063	// register DEVFS root and external directories
1064	devfs_ctx_init( devfs_ctx, devfs_dev_inode_xp, devfs_external_inode_xp );
1065	}
1066
1067	/////////////////////////////////////////////////////////////////////////////////
1068	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
1069	(info->x_size * info->y_size) );
1070	barrier_wait( &local_barrier , info->cores_nr );
1071	/////////////////////////////////////////////////////////////////////////////////
1072
1073	if( (core_lid == 0) && (local_cxy == 0) )
1074	kinit_dmsg("\n[DBG] %s : exit barrier 6 : dev_root = %l in cluster IO / cycle %d\n",
1075	__FUNCTION__, devfs_dev_inode_xp , hal_time_stamp() );
1076
1077	/////////////////////////////////////////////////////////////////////////////////
1078	// STEP 7 : All CP0s complete in parallel the DEVFS tree initialization.
1079	// Each CP0 get the "dev" and "external" extended pointers from
1080	// values stored in cluster IO.
1081	// Then each CP0 in cluster(i) creates the DEVFS "internal directory,
1082	// and creates the pseudo-files for all chdevs in cluster (i).
1083	/////////////////////////////////////////////////////////////////////////////////
1084
1085	if( core_lid == 0 )
1086	{
1087	// get extended pointer on "extend" field of VFS context for DEVFS in cluster IO
1088	xptr_t extend_xp = XPTR( io_cxy , &fs_context[FS_TYPE_DEVFS].extend );
1089
1090	// get pointer on DEVFS context in cluster IO
1091	devfs_ctx_t * devfs_ctx = hal_remote_lpt( extend_xp );
1092
1093	devfs_dev_inode_xp = hal_remote_lwd( XPTR( io_cxy ,
1094	&devfs_ctx->dev_inode_xp ) );
1095	devfs_external_inode_xp = hal_remote_lwd( XPTR( io_cxy ,
1096	&devfs_ctx->external_inode_xp ) );
1097
1098	// populate DEVFS in all clusters
1099	devfs_local_init( devfs_dev_inode_xp,
1100	devfs_external_inode_xp,
1101	&devfs_internal_inode_xp );
1102	}
1103
1104	/////////////////////////////////////////////////////////////////////////////////
1105	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
1106	(info->x_size * info->y_size) );
1107	barrier_wait( &local_barrier , info->cores_nr );
1108	/////////////////////////////////////////////////////////////////////////////////
1109
1110	if( (core_lid == 0) && (local_cxy == 0) )
1111	kinit_dmsg("\n[DBG] %s : exit barrier 7 : dev_root = %l in cluster 0 / cycle %d\n",
1112	__FUNCTION__, devfs_dev_inode_xp , hal_time_stamp() );
1113
1114	/////////////////////////////////////////////////////////////////////////////////
1115	// STEP 8 : CP0 in cluster 0 creates the first user process (process_init)
1116	/////////////////////////////////////////////////////////////////////////////////
1117
1118	if( (core_lid == 0) && (local_cxy == 0) )
1119	{
1120
1121	#if CONFIG_KINIT_DEBUG
1122	vfs_display( vfs_root_inode_xp );
1123	#endif
1124
1125	process_init_create();
1126	}
1127
1128	/////////////////////////////////////////////////////////////////////////////////
1129	if( core_lid == 0 ) remote_barrier( XPTR( io_cxy , &global_barrier ),
1130	(info->x_size * info->y_size) );
1131	barrier_wait( &local_barrier , info->cores_nr );
1132	/////////////////////////////////////////////////////////////////////////////////
1133
1134	if( (core_lid == 0) && (local_cxy == 0) )
1135	kinit_dmsg("\n[DBG] %s : exit barrier 8 : process init created / cycle %d\n",
1136	__FUNCTION__ , hal_time_stamp() );
1137
1138	/////////////////////////////////////////////////////////////////////////////////
1139	// STEP 9 : CP0 in cluster 0 print banner
1140	/////////////////////////////////////////////////////////////////////////////////
1141
1142	if( (core_lid == 0) && (local_cxy == io_cxy) )
1143	{
1144	print_banner( (info->x_size * info->y_size) , info->cores_nr );
1145
1146	#if CONFIG_KINIT_DEBUG
1147
1148	printk("\n\n***** memory fooprint for main kernel objects\n\n"
1149	" - thread descriptor : %d bytes\n"
1150	" - process descriptor : %d bytes\n"
1151	" - cluster manager : %d bytes\n"
1152	" - chdev descriptor : %d bytes\n"
1153	" - core descriptor : %d bytes\n"
1154	" - scheduler : %d bytes\n"
1155	" - rpc fifo : %d bytes\n"
1156	" - page descriptor : %d bytes\n"
1157	" - mapper root : %d bytes\n"
1158	" - ppm manager : %d bytes\n"
1159	" - kcm manager : %d bytes\n"
1160	" - khm manager : %d bytes\n"
1161	" - vmm manager : %d bytes\n"
1162	" - gpt root : %d bytes\n"
1163	" - list item : %d bytes\n"
1164	" - xlist item : %d bytes\n"
1165	" - spinlock : %d bytes\n"
1166	" - remote spinlock : %d bytes\n"
1167	" - rwlock : %d bytes\n"
1168	" - remote rwlock : %d bytes\n",
1169	sizeof( thread_t ),
1170	sizeof( process_t ),
1171	sizeof( cluster_t ),
1172	sizeof( chdev_t ),
1173	sizeof( core_t ),
1174	sizeof( scheduler_t ),
1175	sizeof( remote_fifo_t ),
1176	sizeof( page_t ),
1177	sizeof( mapper_t ),
1178	sizeof( ppm_t ),
1179	sizeof( kcm_t ),
1180	sizeof( khm_t ),
1181	sizeof( vmm_t ),
1182	sizeof( gpt_t ),
1183	sizeof( list_entry_t ),
1184	sizeof( xlist_entry_t ),
1185	sizeof( spinlock_t ),
1186	sizeof( remote_spinlock_t ),
1187	sizeof( rwlock_t ),
1188	sizeof( remote_rwlock_t ));
1189	#endif
1190
1191	}
1192
1193	// each core activates its private TICK IRQ
1194	dev_pic_enable_timer( CONFIG_SCHED_TICK_MS_PERIOD );
1195
1196	// each core jump to thread_idle_func
1197	thread_idle_func();
1198	}
1199

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