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kernel_init.c @ 505

Last change on this file since 505 was 492, checked in by viala@…, 6 years ago

Refactoring assert calling to conform with new assert macro.

Made with this command for the general case.
find ./kernel/ hal/ -name "*.c" | xargs sed -i -e '/assert(/ s/,[ ]*FUNCTION[ ]*,/,/'

And some done by hand.

File size: 53.0 KB

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

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source: trunk/kernel/kern/kernel_init.c @ 505

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