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source: trunk/boot/tsar_mips32/boot.c @ 577

Last change on this file since 577 was 572, checked in by alain, 6 years ago
Introduce the cluster_info[x][y] in the boot_info.h structure for the TSAR architecture.
File size: 39.5 KB

Line
1	/*
2	* boot.c - TSAR bootloader implementation.
3	*
4	* Authors : Vu Son (2016)
5	* Alain Greiner (2016, 2017,2018)
6	*
7	* Copyright (c) UPMC 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	/****************************************************************************
26	* This file contains the ALMOS-MKH. boot-loader for the TSAR architecture. *
27	* *
28	* It supports clusterised shared memory multi-processor architectures, *
29	* where each processor core is identified by a composite index [cxy,lid] *
30	* with one physical memory bank per cluster. *
31	* *
32	* The 'boot.elf' file (containing the boot-loader binary code) is stored *
33	* on disk and is loaded into memory by core[0,0] (cxy = 0 / lid = 0), *
34	* and is copied in each other cluter by the local CP0 (lid = 0]. *
35	* *
36	* 1) The boot-loader first phase is executed by core[0,0], while *
37	* all other cores are waiting in the preloader. *
38	* It does the following tasks: *
39	* - load into the memory bank of cluster 0 the 'arch_info.bin' *
40	* file (containing the hardware architecture description) and the *
41	* 'kernel.elf' file, at temporary locations, *
42	* - initializes the 'boot_info_t' structure in cluster(0,0) *
43	* (there is 1 'boot_info_t' per cluster), which contains both *
44	* global and cluster specific information that will be used for *
45	* kernel initialisation. *
46	* - activate CP0s in all other clusters, using IPIs. *
47	* - wait completion reports from CP0s on a global barrier. *
48	* *
49	* 2) The boot-loader second phase is then executed in parallel by all *
50	* CP0s (other than core[0,0]). Each CP0 performs the following tasks: *
51	* - copies into the memory bank of the local cluster the 'boot.elf', *
52	* the 'arch_info.bin' (at the same addresses as the 'boot.elf' and *
53	* the 'arch_info.bin' in the memory bank of the cluster(0,0), and *
54	* the kernel image (at address 0x0), *
55	* - initializes the 'boot_info_t' structure of the local cluster, *
56	* - activate all other cores in the same cluster (CPi). *
57	* - wait local CPi completion reports on a local barrier. *
58	* - report completion on the global barrier. *
59	* *
60	* 3) The boot-loader third phase is executed in parallel by all cores. *
61	* In each cluster (i) the CP0 *
62	* - activates the other cores of cluster(i), *
63	* - blocks on the local barrier waiting for all local CPi to report *
64	* completion on the local barrier, *
65	* - moves the local kernel image from the temporary location to the *
66	* address 0x0, (erasing the preloader code). *
67	* *
68	* 4) All cores jump to kern_init() (maybe not at the same time). *
69	****************************************************************************/
70
71	#include <elf-types.h>
72	#include <hal_kernel_types.h>
73
74	#include <kernel_config.h>
75	#include <boot_config.h>
76
77	#include <arch_info.h>
78	#include <boot_info.h>
79
80	#include <boot_utils.h>
81	#include <boot_fat32.h>
82	#include <boot_bdv_driver.h>
83	#include <boot_hba_driver.h>
84	#include <boot_tty_driver.h>
85
86	/*****************************************************************************
87	* Macros.
88	****************************************************************************/
89
90	#define PAGE_ROUND_DOWN(x) ((x) & (~PPM_PAGE_SIZE -1))
91	#define PAGE_ROUND_UP(x) (((x) + PPM_PAGE_SIZE-1) & \
92	(~(PPM_PAGE_SIZE-1)))
93
94	/*****************************************************************************
95	* Global variables.
96	****************************************************************************/
97
98	// synchronization variables.
99
100	volatile boot_remote_spinlock_t tty0_lock; // protect TTY0 access
101	volatile boot_remote_barrier_t global_barrier; // synchronize CP0 cores
102	volatile boot_remote_barrier_t local_barrier; // synchronize cores in one cluster
103	uint32_t active_cp0s_nr; // number of expected CP0s
104
105	// kernel segments layout variables
106
107	uint32_t seg_kcode_base; // kcode segment base address
108	uint32_t seg_kcode_size; // kcode segment size (bytes)
109	uint32_t seg_kdata_base; // kdata segment base address
110	uint32_t seg_kdata_size; // kdata segment size (bytes)
111	uint32_t seg_kentry_base; // kcode segment base address
112	uint32_t seg_kentry_size; // kcode segment size (bytes)
113
114	uint32_t kernel_entry; // kernel entry point
115
116	// Functions called by boot_entry.S
117
118	extern void boot_entry( void ); // boot_loader entry point
119	extern void boot_loader( lid_t lid, cxy_t cxy );
120
121
122	#if DEBUG_BOOT_INFO
123	/*********************************************************************************
124	* This debug function returns the printable string for each device type.
125	********************************************************************************/
126	static char * device_type_str( enum device_types_e dev_type )
127	{
128	switch ( dev_type )
129	{
130	case DEV_TYPE_RAM_SCL: return "RAM_SCL";
131	case DEV_TYPE_ROM_SCL: return "ROM_SCL";
132	case DEV_TYPE_FBF_SCL: return "FBF_SCL";
133	case DEV_TYPE_IOB_TSR: return "IOB_TSR";
134	case DEV_TYPE_IOC_BDV: return "IOC_BDV";
135	case DEV_TYPE_IOC_HBA: return "IOC_HBA";
136	case DEV_TYPE_IOC_SDC: return "IOC_SDC";
137	case DEV_TYPE_IOC_SPI: return "IOC_SPI";
138	case DEV_TYPE_IOC_RDK: return "IOC_RDK";
139	case DEV_TYPE_MMC_TSR: return "MMC_TSR";
140	case DEV_TYPE_DMA_SCL: return "DMA_SCL";
141	case DEV_TYPE_NIC_CBF: return "NIC_CBF";
142	case DEV_TYPE_TIM_SCL: return "TIM_SCL";
143	case DEV_TYPE_TXT_TTY: return "TXT_TTY";
144	case DEV_TYPE_TXT_MTY: return "TXT_MTY";
145	case DEV_TYPE_ICU_XCU: return "ICU_XCU";
146	case DEV_TYPE_PIC_TSR: return "PIC_TSR";
147	default: return "undefined";
148	}
149	}
150	#endif
151
152	/************************************************************************************
153	* This function loads the arch_info.bin file into the boot cluster memory.
154	***********************************************************************************/
155	static void boot_archinfo_load( void )
156	{
157	archinfo_header_t* header = (archinfo_header_t*)ARCHINFO_BASE;
158
159	// Load file into memory
160	if (boot_fat32_load(ARCHINFO_PATHNAME, ARCHINFO_BASE, ARCHINFO_MAX_SIZE))
161	{
162	boot_printf("\n[BOOT ERROR]: boot_archinfo_load(): "
163	"<%s> file not found\n",
164	ARCHINFO_PATHNAME);
165	boot_exit();
166	}
167
168	if (header->signature != ARCHINFO_SIGNATURE)
169	{
170	boot_printf("\n[BOOT_ERROR]: boot_archinfo_load(): "
171	"<%s> file signature should be %x\n",
172	ARCHINFO_PATHNAME, ARCHINFO_SIGNATURE);
173	boot_exit();
174	}
175
176	#if DEBUG_BOOT_INFO
177	boot_printf("\n[BOOT INFO] in %s : file %s loaded at address = %x\n",
178	__FUNCTION__ , ARCHINFO_PATHNAME , ARCHINFO_BASE );
179	#endif
180
181	} // boot_archinfo_load()
182
183	/**************************************************************************************
184	* This function loads the 'kernel.elf' file into the boot cluster memory buffer,
185	* analyzes it, and places the three kcode, kentry, kdata segments at their final
186	* physical adresses (defined the .elf file).
187	* It set the global variables defining the kernel layout.
188	*************************************************************************************/
189	static void boot_kernel_load( void )
190	{
191	Elf32_Ehdr * elf_header; // pointer on kernel.elf header.
192	Elf32_Phdr * program_header; // pointer on kernel.elf program header.
193	uint32_t phdr_offset; // program header offset in kernel.elf file.
194	uint32_t segments_nb; // number of segments in kernel.elf file.
195	uint32_t seg_src_addr; // segment address in kernel.elf file (source).
196	uint32_t seg_paddr; // segment local physical address of segment
197	uint32_t seg_offset; // segment offset in kernel.elf file
198	uint32_t seg_filesz; // segment size (bytes) in kernel.elf file
199	uint32_t seg_memsz; // segment size (bytes) in memory image.
200	bool_t kcode_found; // kcode segment found.
201	bool_t kdata_found; // kdata segment found.
202	bool_t kentry_found; // kentry segment found.
203	uint32_t seg_id; // iterator for segments loop.
204
205	#if DEBUG_BOOT_ELF
206	boot_printf("\n[BOOT INFO] %s enters for file %s at cycle %d\n",
207	__FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
208	#endif
209
210	// Load kernel.elf file into memory buffer
211	if ( boot_fat32_load(KERNEL_PATHNAME, KERN_BASE, KERN_MAX_SIZE) )
212	{
213	boot_printf("\n[BOOT ERROR] in %s : <%s> file not found\n",
214	KERNEL_PATHNAME);
215	boot_exit();
216	}
217
218	// get pointer to kernel.elf header
219	elf_header = (Elf32_Ehdr*)KERN_BASE;
220
221	// check signature
222	if ((elf_header->e_ident[EI_MAG0] != ELFMAG0) \|\|
223	(elf_header->e_ident[EI_MAG1] != ELFMAG1) \|\|
224	(elf_header->e_ident[EI_MAG2] != ELFMAG2) \|\|
225	(elf_header->e_ident[EI_MAG3] != ELFMAG3))
226	{
227	boot_printf("\n[BOOT_ERROR]: boot_kernel_load(): "
228	"<%s> is not an ELF file\n",
229	KERNEL_PATHNAME);
230	boot_exit();
231	}
232
233	// Get program header table offset and number of segments
234	phdr_offset = elf_header->e_phoff;
235	segments_nb = elf_header->e_phnum;
236
237	// Get program header table pointer
238	program_header = (Elf32_Phdr*)(KERN_BASE + phdr_offset);
239
240	// loop on segments
241	kcode_found = false;
242	kdata_found = false;
243	kentry_found = false;
244	for (seg_id = 0; seg_id < segments_nb; seg_id++)
245	{
246	if (program_header[seg_id].p_type == PT_LOAD) // Found one loadable segment
247	{
248	// Get segment attributes.
249	seg_paddr = program_header[seg_id].p_paddr;
250	seg_offset = program_header[seg_id].p_offset;
251	seg_filesz = program_header[seg_id].p_filesz;
252	seg_memsz = program_header[seg_id].p_memsz;
253
254	// get segment base address in buffer
255	seg_src_addr = (uint32_t)KERN_BASE + seg_offset;
256
257	// Load segment to its final physical memory address
258	boot_memcpy( (void*)seg_paddr,
259	(void*)seg_src_addr,
260	seg_filesz );
261
262	#if DEBUG_BOOT_ELF
263	boot_printf("\n[BOOT INFO] in %s for file %s : found loadable segment\n"
264	" base = %x / size = %x\n",
265	__FUNCTION__ , KERNEL_PATHNAME , seg_paddr , seg_memsz );
266	#endif
267
268	// Fill remaining memory with zero if (filesz < memsz).
269	if( seg_memsz < seg_filesz )
270	{
271	boot_memset( (void*)(seg_paddr + seg_filesz), 0, seg_memsz - seg_filesz);
272	}
273
274	// Note: we suppose that the 'kernel.elf' file contains exactly
275	// three loadable segments ktext, kentry, & kdata:
276	// - the kcode segment is read-only and base == KCODE_BASE
277	// - the kentry segment is read-only and base == KENTRY_BASE
278
279	if( ((program_header[seg_id].p_flags & PF_W) == 0) &&
280	(program_header[seg_id].p_paddr == KCODE_BASE) ) // kcode segment
281	{
282	if( kcode_found )
283	{
284	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
285	" two kcode segments found\n",
286	__FUNCTION__ , KERNEL_PATHNAME );
287	boot_exit();
288	}
289
290	kcode_found = true;
291	seg_kcode_base = seg_paddr;
292	seg_kcode_size = seg_memsz;
293	}
294	else if( program_header[seg_id].p_paddr == KENTRY_BASE ) // kentry segment
295	{
296	if( kentry_found )
297	{
298	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
299	" two kentry segments found\n",
300	__FUNCTION__ , KERNEL_PATHNAME );
301	boot_exit();
302	}
303
304	kentry_found = true;
305	seg_kentry_base = seg_paddr;
306	seg_kentry_size = seg_memsz;
307	}
308	else // kdata segment
309	{
310	if( kdata_found )
311	{
312	boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
313	" two kdata segments found\n",
314	__FUNCTION__ , KERNEL_PATHNAME );
315	boot_exit();
316	}
317
318	kdata_found = true;
319	seg_kdata_base = seg_paddr;
320	seg_kdata_size = seg_memsz;
321	}
322	}
323	}
324
325	// check kcode & kdata segments found
326	if( kcode_found == false )
327	{
328	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kcode not found\n",
329	__FUNCTION__ , KERNEL_PATHNAME );
330	boot_exit();
331	}
332	if( kentry_found == false )
333	{
334	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kentry not found\n",
335	__FUNCTION__ , KERNEL_PATHNAME );
336	boot_exit();
337	}
338	if( kdata_found == false )
339	{
340	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kdata not found\n",
341	__FUNCTION__ , KERNEL_PATHNAME );
342	boot_exit();
343	}
344
345	// check segments sizes
346	if( seg_kentry_size > KENTRY_MAX_SIZE )
347	{
348	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kentry too large\n",
349	__FUNCTION__ , KERNEL_PATHNAME );
350	boot_exit();
351	}
352
353	if( (seg_kcode_size + seg_kdata_size) > KCODE_MAX_SIZE )
354	{
355	boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kcode + seg_kdata too large\n",
356	__FUNCTION__ , KERNEL_PATHNAME );
357	}
358
359	// set entry point
360	kernel_entry = (uint32_t)elf_header->e_entry;
361
362	#if DEBUG_BOOT_ELF
363	boot_printf("\n[BOOT INFO] %s completed for file %s at cycle %d\n",
364	__FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
365	#endif
366
367	} // boot_kernel_load()
368
369	/*************************************************************************************
370	* This function initializes the boot_info_t structure for a given cluster.
371	* @ boot_info : pointer to local boot_info_t structure
372	* @ cxy : cluster identifier
373	************************************************************************************/
374	static void boot_info_init( boot_info_t * boot_info,
375	cxy_t cxy )
376	{
377	archinfo_header_t * header;
378	archinfo_core_t * core_base;
379	archinfo_cluster_t * cluster_base;
380	archinfo_device_t * device_base;
381	archinfo_irq_t * irq_base;
382
383	archinfo_cluster_t * cluster;
384	archinfo_cluster_t * my_cluster = NULL; // target cluster
385	archinfo_cluster_t * io_cluster = NULL; // external peripherals cluster
386
387	archinfo_core_t * core;
388	uint32_t core_id;
389	archinfo_device_t * device;
390	uint32_t device_id;
391	archinfo_irq_t * irq;
392	uint32_t irq_id;
393	uint32_t end;
394	boot_device_t * boot_dev;
395
396	// get pointer on ARCHINFO header and on the four arch_info arrays
397	header = (archinfo_header_t*)ARCHINFO_BASE;
398	core_base = archinfo_get_core_base (header);
399	cluster_base = archinfo_get_cluster_base(header);
400	device_base = archinfo_get_device_base (header);
401	irq_base = archinfo_get_irq_base (header);
402
403	// Initialize global platform parameters
404	boot_info->x_size = header->x_size;
405	boot_info->y_size = header->y_size;
406	boot_info->x_width = header->x_width;
407	boot_info->y_width = header->y_width;
408	boot_info->paddr_width = header->paddr_width;
409	boot_info->io_cxy = header->io_cxy;
410
411	// Initialize kernel segments from global variables
412	boot_info->kcode_base = seg_kcode_base;
413	boot_info->kcode_size = seg_kcode_size;
414	boot_info->kdata_base = seg_kdata_base;
415	boot_info->kdata_size = seg_kdata_size;
416	boot_info->kentry_base = seg_kentry_base;
417	boot_info->kentry_size = seg_kentry_size;
418
419	// loop on arch_info clusters to build cluster_info[][] array
420	// and get io_cluster and my_cluster pointers
421	for (cluster = cluster_base;
422	cluster < &cluster_base[header->x_size * header->y_size];
423	cluster++)
424	{
425	int x = cluster->cxy >> Y_WIDTH;
426	int y = cluster->cxy & ((1 << Y_WIDTH) - 1);
427	boot_info->cluster_info[x][y] = (uint8_t)cluster->cores;
428
429	if( cluster->cxy == cxy ) my_cluster = cluster;
430	if( cluster->cxy == header->io_cxy ) io_cluster = cluster;
431	}
432
433	if( my_cluster == NULL )
434	{
435	boot_printf("\n[ERROR] in %s : cannot found cluster %x in arch_info\n",
436	__FUNCTION__ , cxy );
437	boot_exit();
438	}
439
440	if( io_cluster == NULL )
441	{
442	boot_printf("\n[ERROR] in %s : cannot found io_cluster %x in arch_info\n",
443	__FUNCTION__ , cxy );
444	boot_exit();
445	}
446
447	//////////////////////////////////////////////////////////
448	// initialize the boot_info array of external peripherals
449
450	#if DEBUG_BOOT_INFO
451	boot_printf("\n[BOOT INFO] %s : external peripherals at cycle %d\n",
452	__FUNCTION__ , boot_get_proctime() );
453	#endif
454
455	device_id = 0;
456	for (device = &device_base[io_cluster->device_offset];
457	device < &device_base[io_cluster->device_offset + io_cluster->devices];
458	device++ )
459	{
460	if( device_id >= CONFIG_MAX_EXT_DEV )
461	{
462	boot_printf("\n[ERROR] in %s : too much external devices in arch_info\n",
463	__FUNCTION__ );
464	boot_exit();
465	}
466
467	// keep only external devices
468	if( (device->type != DEV_TYPE_RAM_SCL) &&
469	(device->type != DEV_TYPE_ICU_XCU) &&
470	(device->type != DEV_TYPE_MMC_TSR) &&
471	(device->type != DEV_TYPE_DMA_SCL) &&
472	(device->type != DEV_TYPE_TXT_MTY) &&
473	(device->type != DEV_TYPE_IOC_SPI) )
474	{
475	boot_dev = &boot_info->ext_dev[device_id];
476
477	boot_dev->type = device->type;
478	boot_dev->base = device->base;
479	boot_dev->channels = device->channels;
480	boot_dev->param0 = device->arg0;
481	boot_dev->param1 = device->arg1;
482	boot_dev->param2 = device->arg2;
483	boot_dev->param3 = device->arg3;
484	boot_dev->irqs = device->irqs;
485
486	device_id++;
487
488	#if DEBUG_BOOT_INFO
489	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
490	device_type_str(device->type), device->base, device->size, device->channels, device->irqs );
491	#endif
492	}
493
494	// handle IRQs for PIC
495	if (device->type == DEV_TYPE_PIC_TSR)
496	{
497	for (irq_id = 0; irq_id < CONFIG_MAX_EXTERNAL_IRQS ; irq_id++)
498	{
499	boot_dev->irq[irq_id].valid = 0;
500	}
501
502	for (irq = &irq_base[device->irq_offset];
503	irq < &irq_base[device->irq_offset + device->irqs];
504	irq++)
505	{
506	boot_dev->irq[irq->port].valid = 1;
507	boot_dev->irq[irq->port].dev_type = irq->dev_type;
508	boot_dev->irq[irq->port].channel = irq->channel;
509	boot_dev->irq[irq->port].is_rx = irq->is_rx;
510
511	#if DEBUG_BOOT_INFO
512	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
513	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
514	#endif
515	}
516	}
517	} // end loop on io_cluster peripherals
518
519	// initialize number of external peripherals
520	boot_info->ext_dev_nr = device_id;
521
522	// Initialize cluster specific resources
523	boot_info->cxy = my_cluster->cxy;
524
525	#if DEBUG_BOOT_INFO
526	boot_printf("\n[BOOT INFO] %s : cores in cluster %x\n", __FUNCTION__ , cxy );
527	#endif
528
529	////////////////////////////////////////
530	// Initialize array of core descriptors
531	core_id = 0;
532	for (core = &core_base[my_cluster->core_offset];
533	core < &core_base[my_cluster->core_offset + my_cluster->cores];
534	core++ )
535	{
536	boot_info->core[core_id].gid = (gid_t)core->gid;
537	boot_info->core[core_id].lid = (lid_t)core->lid;
538	boot_info->core[core_id].cxy = (cxy_t)core->cxy;
539
540	#if DEBUG_BOOT_INFO
541	boot_printf(" - core_gid = %x : cxy = %x / lid = %d\n",
542	core->gid , core->cxy , core->lid );
543	#endif
544	core_id++;
545	}
546
547	// Initialize number of cores in my_cluster
548	boot_info->cores_nr = core_id;
549
550	//////////////////////////////////////////////////////////////////////
551	// initialise boot_info array of internal devices (RAM, ICU, MMC, DMA)
552
553	#if DEBUG_BOOT_INFO
554	boot_printf("\n[BOOT INFO] %s : internal peripherals in cluster %x\n",
555	__FUNCTION__ , cxy );
556	#endif
557
558	device_id = 0;
559	for (device = &device_base[my_cluster->device_offset];
560	device < &device_base[my_cluster->device_offset + my_cluster->devices];
561	device++ )
562	{
563	// keep only internal devices
564	if( (device->type == DEV_TYPE_RAM_SCL) \|\|
565	(device->type == DEV_TYPE_ICU_XCU) \|\|
566	(device->type == DEV_TYPE_MMC_TSR) \|\|
567	(device->type == DEV_TYPE_DMA_SCL) \|\|
568	(device->type == DEV_TYPE_TXT_MTY) \|\|
569	(device->type == DEV_TYPE_IOC_SPI) )
570	{
571	if (device->type == DEV_TYPE_RAM_SCL) // RAM
572	{
573	// set number of physical memory pages
574	boot_info->pages_nr = device->size >> CONFIG_PPM_PAGE_SHIFT;
575
576	#if DEBUG_BOOT_INFO
577	boot_printf(" - RAM : %x pages\n", boot_info->pages_nr );
578	#endif
579	}
580	else // ICU / MMC / DMA / MTY
581	{
582	if( device_id >= CONFIG_MAX_INT_DEV )
583	{
584	boot_printf("\n[ERROR] in %s : too much internal devices in cluster %x\n",
585	__FUNCTION__ , cxy );
586	boot_exit();
587	}
588
589	boot_dev = &boot_info->int_dev[device_id];
590
591	boot_dev->type = device->type;
592	boot_dev->base = device->base;
593	boot_dev->channels = device->channels;
594	boot_dev->param0 = device->arg0;
595	boot_dev->param1 = device->arg1;
596	boot_dev->param2 = device->arg2;
597	boot_dev->param3 = device->arg3;
598	boot_dev->irqs = device->irqs;
599
600	device_id++;
601
602	#if DEBUG_BOOT_INFO
603	boot_printf(" - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
604	device_type_str( device->type ) , device->base , device->size ,
605	device->channels , device->irqs );
606	#endif
607
608	// handle IRQs for ICU
609	if (device->type == DEV_TYPE_ICU_XCU)
610	{
611	for (irq_id = 0; irq_id < CONFIG_MAX_INTERNAL_IRQS ; irq_id++)
612	{
613	boot_dev->irq[irq_id].valid = 0;
614	}
615
616	for (irq = &irq_base[device->irq_offset];
617	irq < &irq_base[device->irq_offset + device->irqs] ; irq++)
618	{
619	boot_dev->irq[irq->port].valid = 1;
620	boot_dev->irq[irq->port].dev_type = irq->dev_type;
621	boot_dev->irq[irq->port].channel = irq->channel;
622	boot_dev->irq[irq->port].is_rx = irq->is_rx;
623
624	#if DEBUG_BOOT_INFO
625	boot_printf(" . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
626	irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
627	#endif
628
629	}
630	}
631	}
632	}
633	} // end loop on local peripherals
634
635	// initialize number of internal peripherals
636	boot_info->int_dev_nr = device_id;
637
638	// Get the top address of the kernel segments
639	end = boot_info->kdata_base + boot_info->kdata_size;
640
641	// compute number of physical pages occupied by the kernel code
642	boot_info->pages_offset = ( (end & CONFIG_PPM_PAGE_MASK) == 0 ) ?
643	(end >> CONFIG_PPM_PAGE_SHIFT) : (end >> CONFIG_PPM_PAGE_SHIFT) + 1;
644
645	// no reserved zones for TSAR architecture
646	boot_info->rsvd_nr = 0;
647
648	// set boot_info signature
649	boot_info->signature = BOOT_INFO_SIGNATURE;
650
651	} // boot_info_init()
652
653	/***********************************************************************************
654	* This function check the local boot_info_t structure for a given core.
655	* @ boot_info : pointer to local 'boot_info_t' structure to be checked.
656	* @ lid : core local identifier, index the core descriptor table.
657	**********************************************************************************/
658	static void boot_check_core( boot_info_t * boot_info,
659	lid_t lid)
660	{
661	gid_t gid; // global hardware identifier of this core
662	boot_core_t * this; // BOOT_INFO core descriptor of this core.
663
664	// Get core hardware identifier
665	gid = (gid_t)boot_get_procid();
666
667	// get pointer on core descriptor
668	this = &boot_info->core[lid];
669
670	if ( (this->gid != gid) \|\| (this->cxy != boot_info->cxy) )
671	{
672	boot_printf("\n[BOOT ERROR] in boot_check_core() :\n"
673	" - boot_info cxy = %x\n"
674	" - boot_info lid = %d\n"
675	" - boot_info gid = %x\n"
676	" - actual gid = %x\n",
677	this->cxy , this->lid , this->gid , gid );
678	boot_exit();
679	}
680
681	} // boot_check_core()
682
683	/*********************************************************************************
684	* This function is called by CP0 in cluster(0,0) to activate all other CP0s.
685	* It returns the number of CP0s actually activated.
686	********************************************************************************/
687	static uint32_t boot_wake_all_cp0s( void )
688	{
689	archinfo_header_t* header; // Pointer on ARCHINFO header
690	archinfo_cluster_t* cluster_base; // Pointer on ARCHINFO clusters base
691	archinfo_cluster_t* cluster; // Iterator for loop on clusters
692	archinfo_device_t* device_base; // Pointer on ARCHINFO devices base
693	archinfo_device_t* device; // Iterator for loop on devices
694	uint32_t cp0_nb = 0; // CP0s counter
695
696	header = (archinfo_header_t*)ARCHINFO_BASE;
697	cluster_base = archinfo_get_cluster_base(header);
698	device_base = archinfo_get_device_base (header);
699
700	// loop on all clusters
701	for (cluster = cluster_base;
702	cluster < &cluster_base[header->x_size * header->y_size];
703	cluster++)
704	{
705	// Skip boot cluster.
706	if (cluster->cxy == BOOT_CORE_CXY)
707	continue;
708
709	// Skip clusters without core (thus without CP0).
710	if (cluster->cores == 0)
711	continue;
712
713	// Skip clusters without device (thus without XICU).
714	if (cluster->devices == 0)
715	continue;
716
717	// search XICU device associated to CP0, and send a WTI to activate it
718	for (device = &device_base[cluster->device_offset];
719	device < &device_base[cluster->device_offset + cluster->devices];
720	device++)
721	{
722	if (device->type == DEV_TYPE_ICU_XCU)
723	{
724
725	#if DEBUG_BOOT_WAKUP
726	boot_printf("\n[BOOT] core[%x,0] activated at cycle %d\n",
727	cluster->cxy , boot_get_proctime );
728	#endif
729
730	boot_remote_sw((xptr_t)device->base, (uint32_t)boot_entry);
731	cp0_nb++;
732	}
733	}
734	}
735	return cp0_nb;
736
737	} // boot_wake_cp0()
738
739	/*********************************************************************************
740	* This function is called by all CP0 to activate the other CPi cores.
741	* @ boot_info : pointer to local 'boot_info_t' structure.
742	*********************************************************************************/
743	static void boot_wake_local_cores(boot_info_t * boot_info)
744	{
745	unsigned int core_id;
746
747	// get pointer on XCU device descriptor in boot_info
748	boot_device_t * xcu = &boot_info->int_dev[0];
749
750	// loop on cores
751	for (core_id = 1; core_id < boot_info->cores_nr; core_id++)
752	{
753
754	#if DEBUG_BOOT_WAKUP
755	boot_printf("\n[BOOT] core[%x,%d] activated at cycle %d\n",
756	boot_info->cxy , core_id , boot_get_proctime() );
757	#endif
758	// send an IPI
759	boot_remote_sw( (xptr_t)(xcu->base + (core_id << 2)) , (uint32_t)boot_entry );
760	}
761	} // boot_wake_local_cores()
762
763
764	/*********************************************************************************
765	* This main function of the boot-loader is called by the boot_entry()
766	* function, and executed by all cores.
767	* The arguments values are computed by the boot_entry code.
768	* @ lid : core local identifier,
769	* @ cxy : cluster identifier,
770	*********************************************************************************/
771	void boot_loader( lid_t lid,
772	cxy_t cxy )
773	{
774	boot_info_t * boot_info; // pointer on local boot_info_t structure
775
776	if (lid == 0)
777	{
778	/****************************************************
779	* PHASE A : only CP0 in boot cluster executes it
780	***************************************************/
781	if (cxy == BOOT_CORE_CXY)
782	{
783	boot_printf("\n[BOOT] core[%x,%d] enters at cycle %d\n",
784	cxy , lid , boot_get_proctime() );
785
786	// Initialize IOC driver
787	if (USE_IOC_BDV) boot_bdv_init();
788	else if (USE_IOC_HBA) boot_hba_init();
789	// else if (USE_IOC_SDC) boot_sdc_init();
790	// else if (USE_IOC_SPI) boot_spi_init();
791	else if (!USE_IOC_RDK)
792	{
793	boot_printf("\n[BOOT ERROR] in %s : no IOC driver\n");
794	boot_exit();
795	}
796
797	// Initialize FAT32.
798	boot_fat32_init();
799
800	// Load the 'kernel.elf' file into memory from IOC, and set
801	// the global variables defining the kernel layout
802	boot_kernel_load();
803
804	boot_printf("\n[BOOT] core[%x,%d] loaded kernel at cycle %d\n",
805	cxy , lid , boot_get_proctime() );
806
807	// Load the arch_info.bin file into memory.
808	boot_archinfo_load();
809
810	boot_printf("\n[BOOT] core[%x,%d] loaded arch_info at cycle %d\n",
811	cxy , lid , boot_get_proctime() );
812
813	// Get local boot_info_t structure base address.
814	// It is the first structure in the .kdata segment.
815	boot_info = (boot_info_t *)seg_kdata_base;
816
817	// Initialize local boot_info_t structure.
818	boot_info_init( boot_info , cxy );
819
820	boot_printf("\n[BOOT] core[%x,%d] initialised boot_info at cycle %d\n",
821	cxy , lid , boot_get_proctime() );
822
823	// check boot_info signature
824	if (boot_info->signature != BOOT_INFO_SIGNATURE)
825	{
826	boot_printf("\n[BOOT ERROR] in %s reported by core[%x,%d]\n"
827	" illegal boot_info signature / should be %x\n",
828	__FUNCTION__ , cxy , lid , BOOT_INFO_SIGNATURE );
829	boot_exit();
830	}
831
832	// Check core information.
833	boot_check_core(boot_info, lid);
834
835	// Activate other CP0s / get number of active CP0s
836	active_cp0s_nr = boot_wake_all_cp0s() + 1;
837
838	// Wait until all clusters (i.e all CP0s) ready to enter kernel.
839	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) ,
840	active_cp0s_nr );
841
842	// activate other local cores
843	boot_wake_local_cores( boot_info );
844
845	// display address extensions
846	// uint32_t cp2_data_ext;
847	// uint32_t cp2_ins_ext;
848	// asm volatile( "mfc2 %0, $24" : "=&r" (cp2_data_ext) );
849	// asm volatile( "mfc2 %0, $25" : "=&r" (cp2_ins_ext) );
850	// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
851	// cxy , lid , cp2_data_ext , cp2_ins_ext );
852
853	// Wait until all local cores in cluster ready
854	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
855	boot_info->cores_nr );
856	}
857	/******************************************************************
858	* PHASE B : all CP0s other than CP0 in boot cluster execute it
859	*****************************************************************/
860	else
861	{
862	// at this point, all INSTRUCTION address extension registers
863	// point on cluster(0,0), but the DATA extension registers point
864	// already on the local cluster to use the local stack.
865	// To access the bootloader global variables we must first copy
866	// the boot code (data and instructions) in the local cluster.
867	boot_remote_memcpy( XPTR( cxy , BOOT_BASE ),
868	XPTR( BOOT_CORE_CXY , BOOT_BASE ),
869	BOOT_MAX_SIZE );
870
871	// from now, it is safe to refer to the boot code global variables
872	boot_printf("\n[BOOT] core[%x,%d] replicated boot code at cycle %d\n",
873	cxy , lid , boot_get_proctime() );
874
875	// switch to the INSTRUCTION local memory space, to avoid contention.
876	// asm volatile("mtc2 %0, $25" :: "r"(cxy));
877
878	// Copy the arch_info.bin file into the local memory.
879	boot_remote_memcpy(XPTR(cxy, ARCHINFO_BASE),
880	XPTR(BOOT_CORE_CXY, ARCHINFO_BASE),
881	ARCHINFO_MAX_SIZE );
882
883	boot_printf("\n[BOOT] core[%x,%d] replicated arch_info at cycle %d\n",
884	cxy , lid , boot_get_proctime() );
885
886	// Copy the kcode segment into local memory
887	boot_remote_memcpy( XPTR( cxy , seg_kcode_base ),
888	XPTR( BOOT_CORE_CXY , seg_kcode_base ),
889	seg_kcode_size );
890
891	// Copy the kdata segment into local memory
892	boot_remote_memcpy( XPTR( cxy , seg_kdata_base ),
893	XPTR( BOOT_CORE_CXY , seg_kdata_base ),
894	seg_kdata_size );
895
896	// Copy the kentry segment into local memory
897	boot_remote_memcpy( XPTR( cxy , seg_kentry_base ),
898	XPTR( BOOT_CORE_CXY , seg_kentry_base ),
899	seg_kentry_size );
900
901	boot_printf("\n[BOOT] core[%x,%d] replicated kernel code at cycle %d\n",
902	cxy , lid , boot_get_proctime() );
903
904	// Get local boot_info_t structure base address.
905	boot_info = (boot_info_t*)seg_kdata_base;
906
907	// Initialize local boot_info_t structure.
908	boot_info_init( boot_info , cxy );
909
910	boot_printf("\n[BOOT] core[%x,%d] initialised boot_info at cycle %d\n",
911	cxy , lid , boot_get_proctime() );
912
913	// Check core information.
914	boot_check_core( boot_info , lid );
915
916	// get number of active clusters from BOOT_CORE cluster
917	uint32_t count = boot_remote_lw( XPTR( BOOT_CORE_CXY , &active_cp0s_nr ) );
918
919	// Wait until all clusters (i.e all CP0s) ready to enter kernel
920	boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) , count );
921
922	// activate other local cores
923	boot_wake_local_cores( boot_info );
924
925	// display address extensions
926	// uint32_t cp2_data_ext;
927	// uint32_t cp2_ins_ext;
928	// asm volatile( "mfc2 %0, $24" : "=&r" (cp2_data_ext) );
929	// asm volatile( "mfc2 %0, $25" : "=&r" (cp2_ins_ext) );
930	// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
931	// cxy , lid , cp2_data_ext , cp2_ins_ext );
932
933	// Wait until all local cores in cluster ready
934	boot_remote_barrier( XPTR( cxy , &local_barrier ) ,
935	boot_info->cores_nr );
936	}
937	}
938	else
939	{
940	/***************************************************************
941	* PHASE C: all non CP0 cores in all clusters execute it
942	**************************************************************/
943
944	// Switch to the INSTRUCTIONS local memory space
945	// to avoid contention at the boot cluster.
946	// asm volatile("mtc2 %0, $25" :: "r"(cxy));
947
948	// Get local boot_info_t structure base address.
949	boot_info = (boot_info_t *)seg_kdata_base;
950
951	// Check core information
952	boot_check_core(boot_info, lid);
953
954	// display address extensions
955	// uint32_t cp2_data_ext;
956	// uint32_t cp2_ins_ext;
957	// asm volatile( "mfc2 %0, $24" : "=&r" (cp2_data_ext) );
958	// asm volatile( "mfc2 %0, $25" : "=&r" (cp2_ins_ext) );
959	// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
960	// cxy , lid , cp2_data_ext , cp2_ins_ext );
961
962	// Wait until all local cores in cluster ready
963	boot_remote_barrier( XPTR( cxy , &local_barrier ) , boot_info->cores_nr );
964	}
965
966	// Each core initialise the following registers before jumping to kernel:
967	// - sp_29 : stack pointer on idle thread,
968	// - c0_sr : reset BEV bit
969	// - a0_04 : pointer on boot_info structure
970	// - c0_ebase : kentry_base(and jump to kernel_entry.
971
972	// The array of idle-thread descriptors is allocated in the kdata segment,
973	// just after the boot_info structure
974	uint32_t sp;
975	uint32_t base;
976	uint32_t offset = sizeof( boot_info_t );
977	uint32_t pmask = CONFIG_PPM_PAGE_MASK;
978	uint32_t psize = CONFIG_PPM_PAGE_SIZE;
979
980	// compute base address of idle thread descriptors array
981	if( offset & pmask ) base = seg_kdata_base + (offset & ~pmask) + psize;
982	else base = seg_kdata_base + offset;
983
984	// compute stack pointer
985	sp = base + ((lid + 1) * CONFIG_THREAD_DESC_SIZE) - 16;
986
987	asm volatile( "mfc0 $27, $12 \n"
988	"lui $26, 0xFFBF \n"
989	"ori $26, $26, 0xFFFF \n"
990	"and $27, $27, $26 \n"
991	"mtc0 $27, $12 \n"
992	"move $4, %0 \n"
993	"move $29, %1 \n"
994	"mtc0 %2, $15, 1 \n"
995	"jr %3 \n"
996	:
997	: "r"(boot_info) ,
998	"r"(sp) ,
999	"r"(boot_info->kentry_base) ,
1000	"r"(kernel_entry)
1001	: "$26" , "$27" , "$29" , "$4" );
1002
1003
1004	} // boot_loader()

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