source: trunk/boot/tsar_mips32/boot.c @ 498

Last change on this file since 498 was 498, checked in by viala@…, 3 years ago

[boot] Add static const to a device_type_str.

Fix:
`
boot.c: At top level:
boot.c:123:14: warning: no previous declaration for 'device_type_str'
[-Wmissing-declarations]

const char * device_type_str( uint32_t dev_type )


`
And
`
boot.c: At top level:
boot.c:123:8: warning: no previous declaration for 'device_type_str' [-Wmissing-declarations]

char * device_type_str( uint32_t dev_type )


boot.c: In function 'device_type_str':
boot.c:125:52: warning: return discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]

if ( dev_type == DEV_TYPE_RAM_SCL ) return "RAM_SCL";


boot.c:126:52: warning: return discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]

else if( dev_type == DEV_TYPE_ROM_SCL ) return "ROM_SCL";

[...]
`

File size: 39.5 KB
Line 
1/*
2 * boot.c - TSAR bootloader implementation.
3 *
4 * Authors :   Alain Greiner / Vu Son  (2016)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24/****************************************************************************
25 * This file contains the ALMOS-MKH. boot-loader for the TSAR architecture. *
26 *                                                                          *
27 * It supports clusterised shared memory multi-processor architectures,     *
28 * where each processor core is identified by a composite index [cxy,lid]   *
29 * with one physical memory bank per cluster.                               *
30 *                                                                          *
31 * The 'boot.elf' file (containing the boot-loader binary code) is stored   *
32 * on disk and is loaded into memory by core[0,0] (cxy = 0 / lid = 0),      *
33 * and is copied in each other cluter by the local CP0 (lid = 0].           *
34 *                                                                          *
35 * 1) The boot-loader first phase is executed by core[0,0], while           *
36 *    all other cores are waiting in the preloader.                         *
37 *    It does the following tasks:                                          *
38 *      - load into the memory bank of cluster 0 the 'arch_info.bin'        *
39 *        file (containing the hardware architecture description) and the   *
40 *        'kernel.elf' file, at temporary locations,                        *   
41 *      - initializes the 'boot_info_t' structure in cluster(0,0)           *
42 *        (there is 1 'boot_info_t' per cluster), which contains both       *
43 *        global and cluster specific information that will be used for     *
44 *        kernel initialisation.                                            *
45 *      - activate CP0s in all other clusters, using IPIs.                  *
46 *      - wait completion reports from CP0s on a global barrier.            *
47 *                                                                          *
48 * 2) The boot-loader second phase is then executed in parallel by all      *
49 *    CP0s (other than core[0,0]). Each CP0 performs the following tasks:   *
50 *      - copies into the memory bank of the local cluster the 'boot.elf',  *
51 *        the 'arch_info.bin' (at the same addresses as the 'boot.elf' and  *
52 *        the 'arch_info.bin' in the memory bank of the cluster(0,0), and   *
53 *        the kernel image (at address 0x0),                                *
54 *      - initializes the 'boot_info_t' structure of the local cluster,     *
55 *      - activate all other cores in the same cluster (CPi).               *
56 *      - wait local CPi completion reports on a local barrier.             *
57 *      - report completion to bscpu on the global barrier.                 *
58 *                                                                          *
59 * 3) The boot-loader third phase is executed in parallel by all cores.     *
60 *    After passing the global barrier the bscpu:                           *
61 *      - activates the CPi of cluster(0),                                  *
62 *      - blocks on the local barrier waiting for all local CPi to report   *
63 *        completion on the local barrier,                                  *
64 *      - moves the local kernel image from the temporary location to the   *
65 *        address 0x0, (erasing the preloader code).                        *
66 *                                                                          *
67 * 4) All cores have finished the boot phase, they jump to the kern_init()  *
68 *    function (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
100volatile boot_remote_spinlock_t tty0_lock;       // protect TTY0 access
101volatile boot_remote_barrier_t  global_barrier;  // synchronize CP0 cores
102volatile boot_remote_barrier_t  local_barrier;   // synchronize cores in one cluster
103uint32_t                        active_cp0s_nr;  // number of expected CP0s
104 
105// kernel segments layout variables
106
107uint32_t                        seg_kcode_base;   // kcode segment base address
108uint32_t                        seg_kcode_size;   // kcode segment size (bytes)
109uint32_t                        seg_kdata_base;   // kdata segment base address
110uint32_t                        seg_kdata_size;   // kdata segment size (bytes)
111uint32_t                        seg_kentry_base;  // kcode segment base address
112uint32_t                        seg_kentry_size;  // kcode segment size (bytes)
113
114uint32_t                        kernel_entry;    // kernel entry point
115
116// address used by the WTI to activate remote CP0s
117
118extern void                     boot_entry( void );    // boot_loader entry point
119
120/*********************************************************************************
121 * This function returns the printable string for each device type
122 ********************************************************************************/
123static const char * device_type_str( uint32_t dev_type )
124{
125    if     ( dev_type == DEV_TYPE_RAM_SCL ) return "RAM_SCL";
126    else if( dev_type == DEV_TYPE_ROM_SCL ) return "ROM_SCL";
127    else if( dev_type == DEV_TYPE_FBF_SCL ) return "FBF_SCL";
128    else if( dev_type == DEV_TYPE_IOB_TSR ) return "IOB_TSR";
129    else if( dev_type == DEV_TYPE_IOC_BDV ) return "IOC_BDV";
130    else if( dev_type == DEV_TYPE_IOC_HBA ) return "IOC_HBA";
131    else if( dev_type == DEV_TYPE_IOC_SDC ) return "IOC_SDC";
132    else if( dev_type == DEV_TYPE_IOC_SPI ) return "IOC_SPI";
133    else if( dev_type == DEV_TYPE_IOC_RDK ) return "IOC_RDK";
134    else if( dev_type == DEV_TYPE_MMC_TSR ) return "MMC_TSR";
135    else if( dev_type == DEV_TYPE_DMA_SCL ) return "DMA_SCL";
136    else if( dev_type == DEV_TYPE_NIC_CBF ) return "NIC_CBF";
137    else if( dev_type == DEV_TYPE_TIM_SCL ) return "TIM_SCL";
138    else if( dev_type == DEV_TYPE_TXT_TTY ) return "TXT_TTY";
139    else if( dev_type == DEV_TYPE_ICU_XCU ) return "ICU_XCU";
140    else if( dev_type == DEV_TYPE_PIC_TSR ) return "PIC_TSR";
141    else                                    return "undefined";
142}
143
144/************************************************************************************
145 * This function loads the arch_info.bin file into the boot cluster memory.
146 ***********************************************************************************/
147static void boot_archinfo_load( void )
148{
149    archinfo_header_t* header = (archinfo_header_t*)ARCHINFO_BASE; 
150   
151    // Load file into memory
152    if (boot_fat32_load(ARCHINFO_PATHNAME, ARCHINFO_BASE, ARCHINFO_MAX_SIZE))
153    {
154        boot_printf("\n[BOOT ERROR]: boot_archinfo_load(): "
155                    "<%s> file not found\n",
156                    ARCHINFO_PATHNAME);
157        boot_exit();
158    }
159
160    if (header->signature != ARCHINFO_SIGNATURE)
161    {
162        boot_printf("\n[BOOT_ERROR]: boot_archinfo_load(): "
163                    "<%s> file signature should be %x\n",
164                    ARCHINFO_PATHNAME, ARCHINFO_SIGNATURE);
165        boot_exit();
166    }
167
168#if DEBUG_BOOT_INFO
169boot_printf("\n[BOOT INFO] in %s : file %s loaded at address = %x\n",
170            __FUNCTION__ , ARCHINFO_PATHNAME , ARCHINFO_BASE );
171#endif
172
173} // boot_archinfo_load()
174
175/**************************************************************************************
176 * This function loads the 'kernel.elf' file into the boot cluster memory buffer,
177 * analyzes it, and places the three kcode, kentry, kdata segments at their final
178 * physical adresses (defined the .elf file).       
179 * It set the global variables defining the kernel layout.
180 *************************************************************************************/
181static void boot_kernel_load( void )
182{
183    Elf32_Ehdr * elf_header;      // pointer on kernel.elf header. 
184    Elf32_Phdr * program_header;  // pointer on kernel.elf program header.
185    uint32_t     phdr_offset;     // program header offset in kernel.elf file.
186    uint32_t     segments_nb;     // number of segments in kernel.elf file.
187    uint32_t     seg_src_addr;    // segment address in kernel.elf file (source).
188    uint32_t     seg_paddr;       // segment local physical address of segment
189    uint32_t     seg_offset;      // segment offset in kernel.elf file
190    uint32_t     seg_filesz;      // segment size (bytes) in kernel.elf file
191    uint32_t     seg_memsz;       // segment size (bytes) in memory image.
192    bool_t       kcode_found;     // kcode segment found.
193    bool_t       kdata_found;     // kdata segment found.
194    bool_t       kentry_found;    // kentry segment found.
195    uint32_t     seg_id;          // iterator for segments loop.
196
197#if DEBUG_BOOT_ELF
198boot_printf("\n[BOOT INFO] %s enters for file %s at cycle %d\n",
199            __FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
200#endif
201
202    // Load kernel.elf file into memory buffer
203    if ( boot_fat32_load(KERNEL_PATHNAME, KERN_BASE, KERN_MAX_SIZE) )
204    {
205        boot_printf("\n[BOOT ERROR] in %s : <%s> file not found\n",
206                    KERNEL_PATHNAME);
207        boot_exit();
208    }
209
210    // get pointer to kernel.elf header 
211    elf_header = (Elf32_Ehdr*)KERN_BASE;
212
213    // check signature
214    if ((elf_header->e_ident[EI_MAG0] != ELFMAG0)   ||
215        (elf_header->e_ident[EI_MAG1] != ELFMAG1)   ||
216        (elf_header->e_ident[EI_MAG2] != ELFMAG2)   ||
217        (elf_header->e_ident[EI_MAG3] != ELFMAG3))
218    {
219        boot_printf("\n[BOOT_ERROR]: boot_kernel_load(): "
220                    "<%s> is not an ELF file\n",
221                    KERNEL_PATHNAME);
222        boot_exit();
223    }
224
225    // Get program header table offset and number of segments
226    phdr_offset     = elf_header->e_phoff;
227    segments_nb     = elf_header->e_phnum;
228
229    // Get program header table pointer
230    program_header  = (Elf32_Phdr*)(KERN_BASE + phdr_offset);
231
232    // loop on segments
233    kcode_found  = false;
234    kdata_found  = false;
235    kentry_found = false;
236    for (seg_id = 0; seg_id < segments_nb; seg_id++) 
237    {
238        if (program_header[seg_id].p_type == PT_LOAD)   // Found one loadable segment
239        {
240            // Get segment attributes.
241            seg_paddr    = program_header[seg_id].p_paddr;   
242            seg_offset   = program_header[seg_id].p_offset;
243            seg_filesz   = program_header[seg_id].p_filesz;
244            seg_memsz    = program_header[seg_id].p_memsz;
245
246            // get segment base address in buffer
247            seg_src_addr = (uint32_t)KERN_BASE + seg_offset;
248
249            // Load segment to its final physical memory address
250            boot_memcpy( (void*)seg_paddr, 
251                         (void*)seg_src_addr, 
252                         seg_filesz );
253
254#if DEBUG_BOOT_ELF
255boot_printf("\n[BOOT INFO] in %s for file %s : found loadable segment\n"
256            "   base = %x / size = %x\n",
257            __FUNCTION__ , KERNEL_PATHNAME , seg_paddr , seg_memsz );
258#endif
259
260            // Fill remaining memory with zero if (filesz < memsz).
261            if( seg_memsz < seg_filesz )
262            {
263                boot_memset( (void*)(seg_paddr + seg_filesz), 0, seg_memsz - seg_filesz);
264            }
265
266            // Note: we suppose that the 'kernel.elf' file contains exactly
267            // three loadable segments ktext, kentry, & kdata:
268            // - the kcode segment is read-only and base == KCODE_BASE
269            // - the kentry segment is read-only and base == KENTRY_BASE
270
271            if( ((program_header[seg_id].p_flags & PF_W) == 0) &&
272                 (program_header[seg_id].p_paddr == KCODE_BASE) )     // kcode segment
273            {
274                if( kcode_found )
275                {
276                    boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
277                                "   two kcode segments found\n",
278                                __FUNCTION__ , KERNEL_PATHNAME );
279                    boot_exit();
280                } 
281
282                kcode_found     = true;
283                seg_kcode_base = seg_paddr;
284                seg_kcode_size = seg_memsz;
285            }
286            else if( program_header[seg_id].p_paddr == KENTRY_BASE ) // kentry segment
287            {
288                if( kentry_found )
289                {
290                    boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
291                                "   two kentry segments found\n",
292                                __FUNCTION__ , KERNEL_PATHNAME );
293                    boot_exit();
294                } 
295
296                kentry_found     = true;
297                seg_kentry_base = seg_paddr;
298                seg_kentry_size = seg_memsz;
299            }
300            else                                                    // kdata segment
301            {
302                if( kdata_found )
303                {
304                    boot_printf("\n[BOOT_ERROR] in %s for file %s :\n"
305                                "   two loadable kdata segments found\n",
306                                __FUNCTION__ , KERNEL_PATHNAME );
307                    boot_exit();
308                } 
309
310                kdata_found     = true;
311                seg_kdata_base = seg_paddr;
312                seg_kdata_size = seg_memsz;
313            }
314        }
315    }
316
317    // check kcode & kdata segments found
318    if( kcode_found == false )
319    {
320        boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kcode not found\n",
321                    __FUNCTION__ , KERNEL_PATHNAME );
322        boot_exit();
323    }
324    if( kentry_found == false )
325    {
326        boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kentry not found\n",
327                    __FUNCTION__ , KERNEL_PATHNAME );
328        boot_exit();
329    }
330    if( kdata_found == false )
331    {
332        boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kdata not found\n",
333                    __FUNCTION__ , KERNEL_PATHNAME );
334        boot_exit();
335    }
336
337    // check segments sizes
338    if( seg_kentry_size > KENTRY_MAX_SIZE )
339    {
340        boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kentry too large\n",
341                    __FUNCTION__ , KERNEL_PATHNAME );
342        boot_exit();
343    }
344
345    if( (seg_kcode_size + seg_kdata_size) > KCODE_MAX_SIZE )
346    {
347        boot_printf("\n[BOOT_ERROR] in %s for file %s : seg_kcode + seg_kdata too large\n",
348                    __FUNCTION__ , KERNEL_PATHNAME );
349    }
350
351    // set entry point
352    kernel_entry = (uint32_t)elf_header->e_entry;
353
354#if DEBUG_BOOT_ELF
355boot_printf("\n[BOOT INFO] %s completed for file %s at cycle %d\n",
356            __FUNCTION__ , KERNEL_PATHNAME , boot_get_proctime() );
357#endif
358
359} // boot_kernel_load()
360
361/*************************************************************************************
362 * This function initializes the  boot_info_t structure for a given cluster.
363 * @ boot_info  : pointer to local boot_info_t structure 
364 * @ cxy        : cluster identifier                   
365 ************************************************************************************/
366static void boot_info_init( boot_info_t * boot_info,
367                            cxy_t         cxy )
368{
369    archinfo_header_t  * header;
370    archinfo_core_t    * core_base;     
371    archinfo_cluster_t * cluster_base; 
372    archinfo_device_t  * device_base;
373    archinfo_irq_t     * irq_base; 
374
375    archinfo_cluster_t * cluster; 
376    archinfo_cluster_t * my_cluster = NULL;   // target cluster
377    archinfo_cluster_t * io_cluster = NULL;   // cluster containing ext. peripherals
378
379    archinfo_core_t    * core;
380    uint32_t             core_id; 
381    archinfo_device_t  * device;
382    uint32_t             device_id;
383    archinfo_irq_t     * irq; 
384    uint32_t             irq_id;
385    uint32_t             end;
386    boot_device_t      * boot_dev; 
387
388    // get pointer on ARCHINFO header  and on the four arch_info arrays
389    header       = (archinfo_header_t*)ARCHINFO_BASE;
390    core_base    = archinfo_get_core_base   (header);
391    cluster_base = archinfo_get_cluster_base(header);
392    device_base  = archinfo_get_device_base (header);
393    irq_base     = archinfo_get_irq_base    (header);
394
395    // Initialize global platform parameters
396    boot_info->x_size       = header->x_size;
397    boot_info->y_size       = header->y_size;
398    boot_info->x_width      = header->x_width;
399    boot_info->y_width      = header->y_width;
400    boot_info->paddr_width  = header->paddr_width;
401    boot_info->io_cxy       = header->io_cxy;
402
403    // Initialize kernel segments from global variables
404    boot_info->kcode_base  = seg_kcode_base;
405    boot_info->kcode_size  = seg_kcode_size;
406    boot_info->kdata_base  = seg_kdata_base;
407    boot_info->kdata_size  = seg_kdata_size;
408    boot_info->kentry_base = seg_kentry_base;
409    boot_info->kentry_size = seg_kentry_size;
410
411    // loop on arch_info clusters to get relevant pointers
412    for (cluster =  cluster_base;
413         cluster < &cluster_base[header->x_size * header->y_size];
414         cluster++)
415    {
416        if( cluster->cxy  == cxy )            my_cluster = cluster;
417        if( cluster->cxy  == header->io_cxy ) io_cluster = cluster;
418    }
419
420    if( my_cluster == NULL ) 
421    {
422        boot_printf("\n[ERROR] in %s : cannot found cluster %x in arch_info\n",
423                    __FUNCTION__ , cxy );
424        boot_exit();
425    }
426
427    if( io_cluster == NULL ) 
428    {
429        boot_printf("\n[ERROR] in %s : cannot found io_cluster %x in arch_info\n",
430                    __FUNCTION__ , header->io_cxy );
431        boot_exit();
432    }
433
434    //////////////////////////////////////////////////////////
435    // initialize the boot_info array of external peripherals
436
437#if DEBUG_BOOT_INFO
438boot_printf("\n[BOOT INFO] %s : external peripherals at cycle %d\n",
439            __FUNCTION__ , boot_get_proctime() );
440#endif
441
442    device_id = 0;
443    for (device = &device_base[io_cluster->device_offset];
444         device < &device_base[io_cluster->device_offset + io_cluster->devices];
445         device++ )
446    {
447        if( device_id >= CONFIG_MAX_EXT_DEV ) 
448        {
449            boot_printf("\n[ERROR] in %s : too much external devices in arch_info\n",
450                        __FUNCTION__ );
451            boot_exit();
452        }
453       
454        // keep only external devices
455        if( (device->type != DEV_TYPE_RAM_SCL) &&
456            (device->type != DEV_TYPE_ICU_XCU) &&
457            (device->type != DEV_TYPE_MMC_TSR) &&
458            (device->type != DEV_TYPE_DMA_SCL) ) 
459        {
460            boot_dev = &boot_info->ext_dev[device_id];
461
462            boot_dev->type     = device->type;
463            boot_dev->base     = device->base;
464            boot_dev->channels = device->channels;
465            boot_dev->param0   = device->arg0;   
466            boot_dev->param1   = device->arg1;   
467            boot_dev->param2   = device->arg2;   
468            boot_dev->param3   = device->arg3;   
469            boot_dev->irqs     = device->irqs;   
470
471            device_id++;
472
473#if DEBUG_BOOT_INFO
474boot_printf("  - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
475            device_type_str( device->type ) , device->base , device->size ,
476            device->channels , device->irqs );   
477#endif
478        }
479   
480        // handle IRQs for PIC
481        if (device->type == DEV_TYPE_PIC_TSR) 
482        {
483            for (irq_id = 0; irq_id < CONFIG_MAX_EXTERNAL_IRQS ; irq_id++)
484            {
485                boot_dev->irq[irq_id].valid  = 0;
486            }
487
488            for (irq = &irq_base[device->irq_offset];
489                 irq < &irq_base[device->irq_offset + device->irqs];
490                 irq++)
491            {
492                boot_dev->irq[irq->port].valid    = 1;
493                boot_dev->irq[irq->port].dev_type = irq->dev_type;
494                boot_dev->irq[irq->port].channel  = irq->channel;
495                boot_dev->irq[irq->port].is_rx    = irq->is_rx;
496
497#if DEBUG_BOOT_INFO
498boot_printf("    . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
499            irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
500#endif
501            }
502        }
503    }   // end loop on io_cluster peripherals
504
505    // initialize number of external peripherals
506    boot_info->ext_dev_nr = device_id;
507
508    // Initialize cluster specific resources
509    boot_info->cxy  = my_cluster->cxy;
510
511#if DEBUG_BOOT_INFO
512boot_printf("\n[BOOT INFO] %s : cores in cluster %x\n", __FUNCTION__ , cxy );
513#endif
514
515    ////////////////////////////////////////
516    // Initialize array of core descriptors
517    core_id = 0;
518    for (core = &core_base[my_cluster->core_offset];
519         core < &core_base[my_cluster->core_offset + my_cluster->cores];
520         core++ )
521    {
522        boot_info->core[core_id].gid = (gid_t)core->gid;
523        boot_info->core[core_id].lid = (lid_t)core->lid; 
524        boot_info->core[core_id].cxy = (cxy_t)core->cxy;
525
526#if DEBUG_BOOT_INFO
527boot_printf("  - core_gid = %x : cxy = %x / lid = %d\n", 
528            core->gid , core->cxy , core->lid );
529#endif
530        core_id++;
531    }
532
533    // Initialize number of cores in my_cluster
534    boot_info->cores_nr = core_id;
535
536    //////////////////////////////////////////////////////////////////////
537    // initialise boot_info array of internal devices (RAM, ICU, MMC, DMA)
538
539#if DEBUG_BOOT_INFO
540boot_printf("\n[BOOT INFO] %s : internal peripherals in cluster %x\n", __FUNCTION__ , cxy );
541#endif
542
543    device_id = 0;
544    for (device = &device_base[my_cluster->device_offset];
545         device < &device_base[my_cluster->device_offset + my_cluster->devices];
546         device++ )
547    {
548        // keep only internal devices
549        if( (device->type == DEV_TYPE_RAM_SCL) ||
550            (device->type == DEV_TYPE_ICU_XCU) ||
551            (device->type == DEV_TYPE_MMC_TSR) ||
552            (device->type == DEV_TYPE_DMA_SCL) ) 
553        {
554            if (device->type == DEV_TYPE_RAM_SCL)   // RAM
555            {
556                // set number of physical memory pages
557                boot_info->pages_nr   = device->size >> CONFIG_PPM_PAGE_SHIFT;
558
559#if DEBUG_BOOT_INFO
560boot_printf("  - RAM : %x pages\n", boot_info->pages_nr );
561#endif
562            }
563            else                                    // ICU / MMC / DMA
564            {
565                if( device_id >= CONFIG_MAX_INT_DEV ) 
566                {
567                    boot_printf("\n[ERROR] in %s : too much internal devices in cluster %x\n",
568                                __FUNCTION__ , cxy );
569                    boot_exit();
570                }
571       
572                boot_dev = &boot_info->int_dev[device_id];
573
574                boot_dev->type     = device->type;
575                boot_dev->base     = device->base;
576                boot_dev->channels = device->channels;
577                boot_dev->param0   = device->arg0;   
578                boot_dev->param1   = device->arg1;   
579                boot_dev->param2   = device->arg2;   
580                boot_dev->param3   = device->arg3;   
581                boot_dev->irqs     = device->irqs; 
582
583                device_id++;
584
585#if DEBUG_BOOT_INFO
586boot_printf("  - %s : base = %l / size = %l / channels = %d / irqs = %d\n",
587            device_type_str( device->type ) , device->base , device->size ,
588            device->channels , device->irqs );   
589#endif
590
591                // handle IRQs for ICU
592                if (device->type == DEV_TYPE_ICU_XCU) 
593                {
594                    for (irq_id = 0; irq_id < CONFIG_MAX_INTERNAL_IRQS ; irq_id++)
595                    {
596                        boot_dev->irq[irq_id].valid  = 0;
597                    }
598
599                    for (irq = &irq_base[device->irq_offset];
600                         irq < &irq_base[device->irq_offset + device->irqs] ; irq++)
601                    {
602                        boot_dev->irq[irq->port].valid    = 1;
603                        boot_dev->irq[irq->port].dev_type = irq->dev_type;
604                        boot_dev->irq[irq->port].channel  = irq->channel;
605                        boot_dev->irq[irq->port].is_rx    = irq->is_rx;
606
607#if DEBUG_BOOT_INFO
608boot_printf("    . irq_port = %d / source = %s / channel = %d / is_rx = %d\n",
609            irq->port , device_type_str( irq->dev_type ) , irq->channel , irq->is_rx );
610#endif
611
612                    }
613                }
614            }
615        }
616    }  // end loop on local peripherals
617
618    // initialize number of internal peripherals
619    boot_info->int_dev_nr = device_id;
620
621   // Get the top address of the kernel segments
622    end = boot_info->kdata_base + boot_info->kdata_size;
623
624    // compute number of physical pages occupied by the kernel code
625    boot_info->pages_offset = ( (end & CONFIG_PPM_PAGE_MASK) == 0 ) ?
626                 (end >> CONFIG_PPM_PAGE_SHIFT) : (end >> CONFIG_PPM_PAGE_SHIFT) + 1;
627
628    // no reserved sones for TSAR architecture
629    boot_info->rsvd_nr = 0;
630
631    // set boot_info signature
632    boot_info->signature = BOOT_INFO_SIGNATURE;
633
634} // boot_info_init()
635
636/***********************************************************************************
637 * This function check the local boot_info_t structure for a given core.
638 * @ boot_info  : pointer to local 'boot_info_t' structure to be checked.
639 * @ lid        : core local identifier, index the core descriptor table.
640 **********************************************************************************/
641static void boot_check_core( boot_info_t * boot_info, 
642                             lid_t         lid)
643{
644    gid_t         gid;        // global hardware identifier of this core
645    boot_core_t * this;       // BOOT_INFO core descriptor of this core. 
646
647    // Get core hardware identifier
648    gid = (gid_t)boot_get_procid();
649
650    // get pointer on core descriptor
651    this = &boot_info->core[lid];
652
653    if ( (this->gid != gid) ||  (this->cxy != boot_info->cxy) )
654    {
655        boot_printf("\n[BOOT ERROR] in boot_check_core() :\n"
656                    " - boot_info cxy = %x\n"
657                    " - boot_info lid = %d\n"
658                    " - boot_info gid = %x\n"
659                    " - actual    gid = %x\n",
660                    this->cxy , this->lid , this->gid , gid );
661        boot_exit();
662    }
663
664} // boot_check_core()
665
666/*********************************************************************************
667 * This function is called by CP0 in cluster(0,0) to activate all other CP0s.
668 * It returns the number of CP0s actually activated.
669 ********************************************************************************/
670static uint32_t boot_wake_all_cp0s()
671{
672    archinfo_header_t*  header;         // Pointer on ARCHINFO header
673    archinfo_cluster_t* cluster_base;   // Pointer on ARCHINFO clusters base
674    archinfo_cluster_t* cluster;        // Iterator for loop on clusters
675    archinfo_device_t*  device_base;    // Pointer on ARCHINFO devices base
676    archinfo_device_t*  device;         // Iterator for loop on devices
677    uint32_t            cp0_nb = 0;     // CP0s counter
678
679    header       = (archinfo_header_t*)ARCHINFO_BASE;
680    cluster_base = archinfo_get_cluster_base(header);
681    device_base  = archinfo_get_device_base (header); 
682
683    // loop on all clusters
684    for (cluster = cluster_base;
685         cluster < &cluster_base[header->x_size * header->y_size];
686         cluster++)
687    {
688        // Skip boot cluster.
689        if (cluster->cxy == BOOT_CORE_CXY)
690            continue;
691           
692        // Skip clusters without core (thus without CP0).
693        if (cluster->cores == 0)
694            continue;
695
696        // Skip clusters without device (thus without XICU).
697        if (cluster->devices == 0)
698            continue;
699
700        // search XICU device associated to CP0, and send a WTI to activate it
701        for (device = &device_base[cluster->device_offset];
702             device < &device_base[cluster->device_offset + cluster->devices];
703             device++)
704        {
705            if (device->type == DEV_TYPE_ICU_XCU)
706            {
707
708#if DEBUG_BOOT_WAKUP
709boot_printf("\n[BOOT] core[%x,0] activated at cycle %d\n",
710            cluster->cxy , boot_get_proctime );
711#endif
712
713                boot_remote_sw((xptr_t)device->base, (uint32_t)boot_entry);
714                cp0_nb++;
715            }
716        }
717    }
718    return cp0_nb;
719
720} // boot_wake_cp0()
721
722/*********************************************************************************
723 * This function is called by all CP0 to activate the other CPi cores.
724 * @ boot_info  : pointer to local 'boot_info_t' structure.
725 *********************************************************************************/
726static void boot_wake_local_cores(boot_info_t * boot_info)
727{
728    unsigned int     core_id;       
729
730    // get pointer on XCU device descriptor in boot_info
731    boot_device_t *  xcu = &boot_info->int_dev[0];
732 
733    // loop on cores
734    for (core_id = 1; core_id < boot_info->cores_nr; core_id++)
735    {
736
737#if DEBUG_BOOT_WAKUP
738boot_printf("\n[BOOT] core[%x,%d] activated at cycle %d\n",
739             boot_info->cxy , core_id , boot_get_proctime() );
740#endif
741        // send an IPI
742        boot_remote_sw( (xptr_t)(xcu->base + (core_id << 2)) , (uint32_t)boot_entry ); 
743    }
744} // boot_wake_local_cores()
745
746
747/*********************************************************************************
748 * This main function of the boot-loader is called by the  boot_entry() 
749 * function, and executed by all cores.
750 * The arguments values are computed by the boot_entry code.
751 * @ lid    : core local identifier,
752 * @ cxy    : cluster identifier,
753 *********************************************************************************/
754void boot_loader( lid_t lid, 
755                  cxy_t cxy )
756{
757    boot_info_t * boot_info;       // pointer on local boot_info_t structure
758
759    if (lid == 0) 
760    {
761        /****************************************************
762         * PHASE A : only CP0 in boot cluster executes it
763         ***************************************************/
764        if (cxy == BOOT_CORE_CXY)
765        {
766            boot_printf("\n[BOOT] core[%x,%d] enters at cycle %d\n",
767                        cxy , lid , boot_get_proctime() );
768
769            // Initialize IOC driver
770            if      (USE_IOC_BDV) boot_bdv_init();
771            else if (USE_IOC_HBA) boot_hba_init();
772            // else if (USE_IOC_SDC) boot_sdc_init();
773            // else if (USE_IOC_SPI) boot_spi_init();
774            else if (!USE_IOC_RDK)
775            {
776                boot_printf("\n[BOOT ERROR] in %s : no IOC driver\n");
777                boot_exit();
778            }
779
780            // Initialize FAT32.
781            boot_fat32_init();
782
783            // Load the 'kernel.elf' file into memory from IOC, and set   
784            // the global variables defining the kernel layout     
785            boot_kernel_load();
786
787            boot_printf("\n[BOOT] core[%x,%d] loaded kernel at cycle %d\n",
788                        cxy , lid , boot_get_proctime() );
789
790            // Load the arch_info.bin file into memory.
791            boot_archinfo_load();
792
793            // Get local boot_info_t structure base address.
794            // It is the first structure in the .kdata segment.
795            boot_info = (boot_info_t *)seg_kdata_base;
796
797            // Initialize local boot_info_t structure.
798            boot_info_init( boot_info , cxy );
799
800            // check boot_info signature
801            if (boot_info->signature != BOOT_INFO_SIGNATURE)
802            {
803                boot_printf("\n[BOOT ERROR] in %s reported by core[%x,%d]\n"
804                            "  illegal boot_info signature / should be %x\n",
805                            __FUNCTION__ , cxy , lid , BOOT_INFO_SIGNATURE );
806                boot_exit();
807            }
808
809            boot_printf("\n[BOOT] core[%x,%d] loaded arch_info at cycle %d\n",
810                        cxy , lid , boot_get_proctime() );
811
812            // Check core information.
813            boot_check_core(boot_info, lid);
814
815            // Activate other CP0s / get number of active CP0s
816            active_cp0s_nr = boot_wake_all_cp0s() + 1;
817
818            // Wait until all clusters (i.e all CP0s) ready to enter kernel.
819            boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) ,
820                                 active_cp0s_nr );
821
822            // activate other local cores
823            boot_wake_local_cores( boot_info );
824
825// display address extensions
826// uint32_t cp2_data_ext;
827// uint32_t cp2_ins_ext;
828// asm volatile( "mfc2   %0,  $24" : "=&r" (cp2_data_ext) );
829// asm volatile( "mfc2   %0,  $25" : "=&r" (cp2_ins_ext) );
830// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
831// cxy , lid , cp2_data_ext , cp2_ins_ext );
832
833            // Wait until all local cores in cluster ready
834            boot_remote_barrier( XPTR( cxy , &local_barrier ) , 
835                                 boot_info->cores_nr );
836        }
837        /******************************************************************
838         * PHASE B : all CP0s other than CP0 in boot cluster execute it
839         *****************************************************************/
840        else
841        {
842            // at this point, all INSTRUCTION address extension registers
843            // point on cluster(0,0), but the DATA extension registers point
844            // already on the local cluster to use the local stack.
845            // To access the bootloader global variables we must first copy
846            // the boot code (data and instructions) in the local cluster.
847            boot_remote_memcpy( XPTR( cxy           , BOOT_BASE ),
848                                XPTR( BOOT_CORE_CXY , BOOT_BASE ),
849                                BOOT_MAX_SIZE );
850
851            // from now, it is safe to refer to the boot code global variables
852            boot_printf("\n[BOOT] core[%x,%d] replicated boot code at cycle %d\n",
853                        cxy , lid , boot_get_proctime() );
854
855                        // switch to the INSTRUCTION local memory space, to avoid contention.
856            asm volatile("mtc2  %0, $25" :: "r"(cxy));
857
858            // Copy the arch_info.bin file into the local memory.
859            boot_remote_memcpy(XPTR(cxy,           ARCHINFO_BASE),
860                               XPTR(BOOT_CORE_CXY, ARCHINFO_BASE),
861                               ARCHINFO_MAX_SIZE );
862
863            boot_printf("\n[BOOT] core[%x,%d] replicated arch_info at cycle %d\n",
864                        cxy , lid , boot_get_proctime() );
865
866            // Copy the kcode segment into local memory
867            boot_remote_memcpy( XPTR( cxy           , seg_kcode_base ),
868                                XPTR( BOOT_CORE_CXY , seg_kcode_base ),
869                                seg_kcode_size );
870
871            // Copy the kdata segment into local memory
872            boot_remote_memcpy( XPTR( cxy           , seg_kdata_base ),
873                                XPTR( BOOT_CORE_CXY , seg_kdata_base ),
874                                seg_kdata_size );
875
876            // Copy the kentry segment into local memory
877            boot_remote_memcpy( XPTR( cxy           , seg_kentry_base ),
878                                XPTR( BOOT_CORE_CXY , seg_kentry_base ),
879                                seg_kentry_size );
880
881            boot_printf("\n[BOOT] core[%x,%d] replicated kernel code at cycle %d\n",
882                        cxy , lid , boot_get_proctime() );
883
884            // Get local boot_info_t structure base address.
885            boot_info = (boot_info_t*)seg_kdata_base;
886
887            // Initialize local boot_info_t structure.
888            boot_info_init( boot_info , cxy );
889
890            // Check core information.
891            boot_check_core( boot_info , lid );
892
893            // get number of active clusters from BOOT_CORE cluster
894            uint32_t count = boot_remote_lw( XPTR( BOOT_CORE_CXY , &active_cp0s_nr ) );
895
896            // Wait until all clusters (i.e all CP0s) ready to enter kernel
897            boot_remote_barrier( XPTR( BOOT_CORE_CXY , &global_barrier ) , count );
898
899            // activate other local cores
900            boot_wake_local_cores( boot_info );
901
902// display address extensions
903// uint32_t cp2_data_ext;
904// uint32_t cp2_ins_ext;
905// asm volatile( "mfc2   %0,  $24" : "=&r" (cp2_data_ext) );
906// asm volatile( "mfc2   %0,  $25" : "=&r" (cp2_ins_ext) );
907// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
908// cxy , lid , cp2_data_ext , cp2_ins_ext );
909
910            // Wait until all local cores in cluster ready
911            boot_remote_barrier( XPTR( cxy , &local_barrier ) , 
912                                 boot_info->cores_nr );
913        }
914    }
915    else
916    {
917        /***************************************************************
918         * PHASE C: all non CP0 cores in all clusters execute it
919         **************************************************************/
920
921        // Switch to the INSTRUCTIONS local memory space
922        // to avoid contention at the boot cluster.
923        asm volatile("mtc2  %0, $25" :: "r"(cxy));
924
925        // Get local boot_info_t structure base address.
926        boot_info = (boot_info_t *)seg_kdata_base;
927
928        // Check core information
929        boot_check_core(boot_info, lid);
930
931// display address extensions
932// uint32_t cp2_data_ext;
933// uint32_t cp2_ins_ext;
934// asm volatile( "mfc2   %0,  $24" : "=&r" (cp2_data_ext) );
935// asm volatile( "mfc2   %0,  $25" : "=&r" (cp2_ins_ext) );
936// boot_printf("\n[BOOT] core[%x,%d] CP2_DATA_EXT = %x / CP2_INS_EXT = %x\n",
937// cxy , lid , cp2_data_ext , cp2_ins_ext );
938
939        // Wait until all local cores in cluster ready
940        boot_remote_barrier( XPTR( cxy , &local_barrier ) , boot_info->cores_nr );
941    }
942
943    // Each core initialise the following registers before jumping to kernel:
944    // - sp_29    : stack pointer on idle thread,
945    // - c0_sr    : reset BEV bit
946    // - a0_04    : pointer on boot_info structure
947    // - c0_ebase : kentry_base(and jump to kernel_entry.
948
949    // The array of idle-thread descriptors is allocated in the kdata segment,
950    // just after the boot_info structure
951    uint32_t sp;
952    uint32_t base;
953    uint32_t offset = sizeof( boot_info_t );
954    uint32_t pmask  = CONFIG_PPM_PAGE_MASK;
955    uint32_t psize  = CONFIG_PPM_PAGE_SIZE;
956
957    // compute base address of idle thread descriptors array
958    if( offset & pmask ) base = seg_kdata_base + (offset & ~pmask) + psize;
959    else                 base = seg_kdata_base + offset;
960
961    // compute stack pointer
962    sp = base + ((lid + 1) * CONFIG_THREAD_DESC_SIZE) - 16;
963
964    asm volatile( "mfc0  $27,  $12           \n"
965                  "lui   $26,  0xFFBF        \n"
966                  "ori   $26,  $26,  0xFFFF  \n"
967                  "and   $27,  $27,  $26     \n"
968                  "mtc0  $27,  $12           \n"
969                  "move  $4,   %0            \n"
970                  "move  $29,  %1            \n"
971                  "mtc0  %2,   $15,  1       \n"
972                  "jr    %3                  \n"
973                  :
974                  : "r"(boot_info) ,
975                    "r"(sp) ,
976                    "r"(boot_info->kentry_base) ,
977                    "r"(kernel_entry) 
978                  : "$26" , "$27" , "$29" , "$4" );
979
980
981} // boot_loader()
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