diff options
Diffstat (limited to 'board/utx8245/flash.c')
| -rw-r--r-- | board/utx8245/flash.c | 781 |
1 files changed, 425 insertions, 356 deletions
diff --git a/board/utx8245/flash.c b/board/utx8245/flash.c index 73bb04d..3271827 100644 --- a/board/utx8245/flash.c +++ b/board/utx8245/flash.c @@ -45,25 +45,19 @@ # endif #endif -#define FLASH_BANK_SIZE 0x200000 +#define FLASH_BANK_SIZE ((uint)(16 * 1024 * 1024)) /* max 16Mbyte */ #define MAIN_SECT_SIZE 0x10000 #define SECT_SIZE_32KB 0x8000 #define SECT_SIZE_8KB 0x2000 -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; -static int write_word (flash_info_t *info, ulong dest, ulong data); - -static __inline__ unsigned long get_msr(void) -{ unsigned long msr; - __asm__ __volatile__ ("mfmsr %0" : "=r" (msr) :); - return msr; -} - -static __inline__ void set_msr(unsigned long msr) -{ - __asm__ __volatile__ ("mtmsr %0" : : "r" (msr)); -} +static int write_word (flash_info_t * info, ulong dest, ulong data); +#if 0 +static void write_via_fpu (vu_long * addr, ulong * data); +#endif +static __inline__ unsigned long get_msr (void); +static __inline__ void set_msr (unsigned long msr); /*flash command address offsets*/ #define ADDR0 (0x555) @@ -77,285 +71,336 @@ static __inline__ void set_msr(unsigned long msr) /*---------------------------------------------------------------------*/ -unsigned long flash_init(void) +unsigned long flash_init (void) { - int i, j; - ulong size = 0; + int i; /* flash bank counter */ + int j; /* flash device sector counter */ + int k; /* flash size calculation loop counter */ + int N; /* pow(2,N) is flash size, but we don't have <math.h> */ + ulong total_size = 0, device_size = 1; unsigned char manuf_id, device_id; - for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) - { - vu_char *addr = (vu_char *)(CFG_FLASH_BASE + i * FLASH_BANK_SIZE); + for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { + vu_char *addr = (vu_char *) (CFG_FLASH_BASE + i * FLASH_BANK_SIZE); + + addr[0x555] = 0xAA; /* get manuf/device info command */ + addr[0x2AA] = 0x55; /* 3-cycle command */ + addr[0x555] = 0x90; + + manuf_id = addr[0]; /* read back manuf/device info */ + device_id = addr[1]; - addr[0x555] = 0xAA; /* 3 cycles to read device info. See */ - addr[0x2AA] = 0x55; /* AM29LV116D datasheet for list of */ - addr[0x555] = 0x90; /* available commands. */ + addr[0x55] = 0x98; /* CFI command */ + N = addr[0x27]; /* read back device_size = pow(2,N) */ - manuf_id = addr[0]; - device_id = addr[1]; + for (k = 0; k < N; k++) /* calculate device_size = pow(2,N) */ + device_size *= 2; + + flash_info[i].size = device_size; + flash_info[i].sector_count = CFG_MAX_FLASH_SECT; #if defined DEBUG_FLASH - printf("manuf_id = %x, device_id = %x\n", manuf_id, device_id); + printf ("manuf_id = %x, device_id = %x\n", manuf_id, device_id); #endif + /* find out what kind of flash we are using */ + if ((manuf_id == (uchar) (AMD_MANUFACT)) + && (device_id == AMD_ID_LV033C)) { + flash_info[i].flash_id = + ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) | + (FLASH_AM033C & FLASH_TYPEMASK); + + /* set individual sector start addresses */ + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = + (CFG_FLASH_BASE + i * FLASH_BANK_SIZE + + j * MAIN_SECT_SIZE); + } + } - if ( (manuf_id == (uchar)(AMD_MANUFACT)) && - ( device_id == AMD_ID_LV116DT)) - { - flash_info[i].flash_id = ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) | - (AMD_ID_LV116DT & FLASH_TYPEMASK); - } else { - flash_info[i].flash_id = FLASH_UNKNOWN; - addr[0] = (long)0xFFFFFFFF; - goto Done; + else if ((manuf_id == (uchar) (AMD_MANUFACT)) && + (device_id == AMD_ID_LV116DT)) { + flash_info[i].flash_id = + ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) | + (FLASH_AM160T & FLASH_TYPEMASK); + + /* set individual sector start addresses */ + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = + (CFG_FLASH_BASE + i * FLASH_BANK_SIZE + + j * MAIN_SECT_SIZE); + + if (j < (CFG_MAX_FLASH_SECT - 3)) { + flash_info[i].start[j] = + (CFG_FLASH_BASE + i * FLASH_BANK_SIZE + + j * MAIN_SECT_SIZE); + } else if (j == (CFG_MAX_FLASH_SECT - 3)) { + flash_info[i].start[j] = + (flash_info[i].start[j - 1] + SECT_SIZE_32KB); + + } else { + flash_info[i].start[j] = + (flash_info[i].start[j - 1] + SECT_SIZE_8KB); + } + } + } + + else { + flash_info[i].flash_id = FLASH_UNKNOWN; + addr[0] = 0xFF; + goto Done; } #if defined DEBUG_FLASH printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id); #endif - addr[0] = (long)0xFFFFFFFF; - - flash_info[i].size = FLASH_BANK_SIZE; - flash_info[i].sector_count = CFG_MAX_FLASH_SECT; - memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); - - for (j = 0; j < flash_info[i].sector_count; j++) - { + addr[0] = 0xFF; - if (j < (CFG_MAX_FLASH_SECT - 3) ) + memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); - flash_info[i].start[j] = CFG_FLASH_BASE + i * FLASH_BANK_SIZE + - j * MAIN_SECT_SIZE; + total_size += flash_info[i].size; + } - else if (j == (CFG_MAX_FLASH_SECT - 3) ) - - flash_info[i].start[j] = flash_info[i].start[j-1] + SECT_SIZE_32KB; - - - else - - flash_info[i].start[j] = flash_info[i].start[j-1] + SECT_SIZE_8KB; - - } - - size += flash_info[i].size; - } - - /* Protect monitor and environment sectors - */ + /* Protect monitor and environment sectors + */ #if CFG_MONITOR_BASE >= CFG_FLASH_BASE - flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, - CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]); + flash_protect (FLAG_PROTECT_SET, CFG_MONITOR_BASE, + CFG_MONITOR_BASE + monitor_flash_len - 1, + &flash_info[0]); #endif #if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR) - flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, - CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); + flash_protect (FLAG_PROTECT_SET, CFG_ENV_ADDR, + CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); #endif -Done: - return size; + Done: + return total_size; } /*----------------------------------------------------------------------- */ -void flash_print_info(flash_info_t *info) +void flash_print_info (flash_info_t * info) { - static const char unk[] = "Unknown"; - const char *mfct = unk, *type = unk; - unsigned int i; - - if(info->flash_id != FLASH_UNKNOWN) - { - switch(info->flash_id & FLASH_VENDMASK) - { - case FLASH_MAN_AMD: mfct = "AMD"; break; - case FLASH_MAN_FUJ: mfct = "FUJITSU"; break; - case FLASH_MAN_STM: mfct = "STM"; break; - case FLASH_MAN_SST: mfct = "SST"; break; - case FLASH_MAN_BM: mfct = "Bright Microelectonics"; break; - case FLASH_MAN_INTEL: mfct = "Intel"; break; - } - - switch(info->flash_id & FLASH_TYPEMASK) - { - case FLASH_AM040: type = "AM29F040B (512K * 8, uniform sector size)"; break; - case FLASH_AM400B: type = "AM29LV400B (4 Mbit, bottom boot sect)"; break; - case FLASH_AM400T: type = "AM29LV400T (4 Mbit, top boot sector)"; break; - case FLASH_AM800B: type = "AM29LV800B (8 Mbit, bottom boot sect)"; break; - case FLASH_AM800T: type = "AM29LV800T (8 Mbit, top boot sector)"; break; - case FLASH_AM160T: type = "AM29LV160T (16 Mbit, top boot sector)"; break; - case FLASH_AM320B: type = "AM29LV320B (32 Mbit, bottom boot sect)"; break; - case FLASH_AM320T: type = "AM29LV320T (32 Mbit, top boot sector)"; break; - case FLASH_STM800AB: type = "M29W800AB (8 Mbit, bottom boot sect)"; break; - case FLASH_SST800A: type = "SST39LF/VF800 (8 Mbit, uniform sector size)"; break; - case FLASH_SST160A: type = "SST39LF/VF160 (16 Mbit, uniform sector size)"; break; - } - } - - printf( - "\n Brand: %s Type: %s\n" - " Size: %lu KB in %d Sectors\n", - mfct, - type, - info->size >> 10, - info->sector_count - ); - - printf (" Sector Start Addresses:"); - - for (i = 0; i < info->sector_count; i++) - { - unsigned long size; - unsigned int erased; - unsigned long * flash = (unsigned long *) info->start[i]; - - /* - * Check if whole sector is erased - */ - size = - (i != (info->sector_count - 1)) ? - (info->start[i + 1] - info->start[i]) >> 2 : - (info->start[0] + info->size - info->start[i]) >> 2; - - for( - flash = (unsigned long *) info->start[i], erased = 1; - (flash != (unsigned long *) info->start[i] + size) && erased; - flash++ - ) - erased = *flash == ~0x0UL; - - printf( - "%s %08lX %s %s", - (i % 5) ? "" : "\n ", - info->start[i], - erased ? "E" : " ", - info->protect[i] ? "RO" : " " - ); - } - - puts("\n"); - return; + static const char unk[] = "Unknown"; + const char *mfct = unk, *type = unk; + unsigned int i; + + if (info->flash_id != FLASH_UNKNOWN) { + switch (info->flash_id & FLASH_VENDMASK) { + case FLASH_MAN_AMD: + mfct = "AMD"; + break; + case FLASH_MAN_FUJ: + mfct = "FUJITSU"; + break; + case FLASH_MAN_STM: + mfct = "STM"; + break; + case FLASH_MAN_SST: + mfct = "SST"; + break; + case FLASH_MAN_BM: + mfct = "Bright Microelectonics"; + break; + case FLASH_MAN_INTEL: + mfct = "Intel"; + break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_AM033C: + type = "AM29LV033C (32 Mbit, uniform sector size)"; + break; + case FLASH_AM160T: + type = "AM29LV160T (16 Mbit, top boot sector)"; + break; + case FLASH_AM040: + type = "AM29F040B (512K * 8, uniform sector size)"; + break; + case FLASH_AM400B: + type = "AM29LV400B (4 Mbit, bottom boot sect)"; + break; + case FLASH_AM400T: + type = "AM29LV400T (4 Mbit, top boot sector)"; + break; + case FLASH_AM800B: + type = "AM29LV800B (8 Mbit, bottom boot sect)"; + break; + case FLASH_AM800T: + type = "AM29LV800T (8 Mbit, top boot sector)"; + break; + case FLASH_AM320B: + type = "AM29LV320B (32 Mbit, bottom boot sect)"; + break; + case FLASH_AM320T: + type = "AM29LV320T (32 Mbit, top boot sector)"; + break; + case FLASH_STM800AB: + type = "M29W800AB (8 Mbit, bottom boot sect)"; + break; + case FLASH_SST800A: + type = "SST39LF/VF800 (8 Mbit, uniform sector size)"; + break; + case FLASH_SST160A: + type = "SST39LF/VF160 (16 Mbit, uniform sector size)"; + break; + } + } + + printf ("\n Brand: %s Type: %s\n" + " Size: %lu KB in %d Sectors\n", + mfct, type, info->size >> 10, info->sector_count); + + printf (" Sector Start Addresses:"); + + for (i = 0; i < info->sector_count; i++) { + unsigned long size; + unsigned int erased; + unsigned long *flash = (unsigned long *) info->start[i]; + + /* + * Check if whole sector is erased + */ + size = (i != (info->sector_count - 1)) ? + (info->start[i + 1] - info->start[i]) >> 2 : + (info->start[0] + info->size - info->start[i]) >> 2; + + for (flash = (unsigned long *) info->start[i], erased = 1; + (flash != (unsigned long *) info->start[i] + size) && erased; + flash++) + erased = *flash == ~0x0UL; + + printf ("%s %08lX %s %s", + (i % 5) ? "" : "\n ", + info->start[i], + erased ? "E" : " ", info->protect[i] ? "RO" : " "); + } + + puts ("\n"); + return; } /*----------------------------------------------------------------------- */ -int flash_erase (flash_info_t *info, int s_first, int s_last) +int flash_erase (flash_info_t * info, int s_first, int s_last) { - volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]); - int flag, prot, sect, l_sect; - ulong start, now, last; - unsigned char sh8b; - - if ((s_first < 0) || (s_first > s_last)) { - if (info->flash_id == FLASH_UNKNOWN) { - printf ("- missing\n"); - } else { - printf ("- no sectors to erase\n"); - } - return 1; - } - - if ((info->flash_id == FLASH_UNKNOWN) || - (info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) { - printf ("Can't erase unknown flash type - aborted\n"); - return 1; - } - - prot = 0; - for (sect=s_first; sect<=s_last; ++sect) { - if (info->protect[sect]) { - prot++; - } - } - - if (prot) { - printf ("- Warning: %d protected sectors will not be erased!\n", - prot); - } else { - printf ("\n"); - } - - l_sect = -1; - - /* Check the ROM CS */ - if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)) - sh8b = 3; - else - sh8b = 0; + volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]); + int flag, prot, sect, l_sect; + ulong start, now, last; + unsigned char sh8b; + + if ((s_first < 0) || (s_first > s_last)) { + if (info->flash_id == FLASH_UNKNOWN) { + printf ("- missing\n"); + } else { + printf ("- no sectors to erase\n"); + } + return 1; + } + + if ((info->flash_id == FLASH_UNKNOWN) || + (info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) { + printf ("Can't erase unknown flash type - aborted\n"); + return 1; + } + + prot = 0; + for (sect = s_first; sect <= s_last; ++sect) { + if (info->protect[sect]) { + prot++; + } + } + + if (prot) { + printf ("- Warning: %d protected sectors will not be erased!\n", + prot); + } else { + printf ("\n"); + } + + l_sect = -1; + + /* Check the ROM CS */ + if ((info->start[0] >= ROM_CS1_START) + && (info->start[0] < ROM_CS0_START)) + sh8b = 3; + else + sh8b = 0; /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; - addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; - addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080; - addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; - addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) - { - if (info->protect[sect] == 0) - { /* not protected */ - addr = (FLASH_WORD_SIZE *)(info->start[0] + ( - (info->start[sect] - info->start[0]) << sh8b)); - - if (info->flash_id & FLASH_MAN_SST) - { - addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; - addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; - addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080; - addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; - addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; - addr[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */ - udelay(30000); /* wait 30 ms */ + flag = disable_interrupts (); + + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect <= s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ + addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info-> + start[sect] - + info-> + start[0]) << + sh8b)); + + if (info->flash_id & FLASH_MAN_SST) { + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */ + udelay (30000); /* wait 30 ms */ + } else { + addr[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */ } - else - addr[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */ - l_sect = sect; - } - } - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* wait at least 80us - let's wait 1 ms */ - udelay (1000); - - /* - * We wait for the last triggered sector - */ - if (l_sect < 0) - goto DONE; - - start = get_timer (0); - last = start; - addr = (FLASH_WORD_SIZE *)(info->start[0] + ( - (info->start[l_sect] - info->start[0]) << sh8b)); - while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) { - if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - return 1; - } - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - serial_putc ('.'); - last = now; - } - } - -DONE: - /* reset to read mode */ - addr = (FLASH_WORD_SIZE *)info->start[0]; - addr[0] = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ - - printf (" done\n"); - return 0; + } + } + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts (); + + /* wait at least 80us - let's wait 1 ms */ + udelay (1000); + + /* + * We wait for the last triggered sector + */ + if (l_sect < 0) + goto DONE; + + start = get_timer (0); + last = start; + addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->start[l_sect] - + info-> + start[0]) << sh8b)); + while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) != + (FLASH_WORD_SIZE) 0x00800080) { + if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) { + printf ("Timeout\n"); + return 1; + } + /* show that we're waiting */ + if ((now - last) > 1000) { /* every second */ + serial_putc ('.'); + last = now; + } + } + + DONE: + /* reset to read mode */ + addr = (FLASH_WORD_SIZE *) info->start[0]; + addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ + + printf (" done\n"); + return 0; } @@ -366,68 +411,68 @@ DONE: * 2 - Flash not erased */ -int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) +int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) { - ulong cp, wp, data; - int i, l, rc; - - wp = (addr & ~3); /* get lower word aligned address */ - - /* - * handle unaligned start bytes - */ - if ((l = addr - wp) != 0) { - data = 0; - for (i=0, cp=wp; i<l; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - for (; i<4 && cnt>0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - for (; cnt==0 && i<4; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); - } - wp += 4; - } - - /* - * handle word aligned part - */ - while (cnt >= 4) { - data = 0; - for (i=0; i<4; ++i) { - data = (data << 8) | *src++; - } - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); - } - wp += 4; - cnt -= 4; - } - - if (cnt == 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - for (; i<4; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - return (write_word(info, wp, data)); + ulong cp, wp, data; + int i, l, rc; + + wp = (addr & ~3); /* get lower word aligned address */ + + /* + * handle unaligned start bytes + */ + if ((l = addr - wp) != 0) { + data = 0; + for (i = 0, cp = wp; i < l; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + for (; i < 4 && cnt > 0; ++i) { + data = (data << 8) | *src++; + --cnt; + ++cp; + } + for (; cnt == 0 && i < 4; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + + if ((rc = write_word (info, wp, data)) != 0) { + return (rc); + } + wp += 4; + } + + /* + * handle word aligned part + */ + while (cnt >= 4) { + data = 0; + for (i = 0; i < 4; ++i) { + data = (data << 8) | *src++; + } + if ((rc = write_word (info, wp, data)) != 0) { + return (rc); + } + wp += 4; + cnt -= 4; + } + + if (cnt == 0) { + return (0); + } + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) { + data = (data << 8) | *src++; + --cnt; + } + for (; i < 4; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + + return (write_word (info, wp, data)); } @@ -437,55 +482,79 @@ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) * 1 - write timeout * 2 - Flash not erased */ -static int write_word (flash_info_t *info, ulong dest, ulong data) +static int write_word (flash_info_t * info, ulong dest, ulong data) { - volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)info->start[0]; + volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) info->start[0]; volatile FLASH_WORD_SIZE *dest2; - volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data; + volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data; ulong start; int flag; int i; unsigned char sh8b; - /* Check the ROM CS */ - if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)) - sh8b = 3; - else - sh8b = 0; - - dest2 = (FLASH_WORD_SIZE *)(((dest - info->start[0]) << sh8b) + - info->start[0]); - - /* Check if Flash is (sufficiently) erased */ - if ((*dest2 & (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) { - return (2); - } - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++) - { - addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; - addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; - addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00A000A0; - - dest2[i << sh8b] = data2[i]; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* data polling for D7 */ - start = get_timer (0); - while ((dest2[i << sh8b] & (FLASH_WORD_SIZE)0x00800080) != - (data2[i] & (FLASH_WORD_SIZE)0x00800080)) { - if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { - return (1); - } - } - } - - return (0); + /* Check the ROM CS */ + if ((info->start[0] >= ROM_CS1_START) + && (info->start[0] < ROM_CS0_START)) + sh8b = 3; + else + sh8b = 0; + + dest2 = (FLASH_WORD_SIZE *) (((dest - info->start[0]) << sh8b) + + info->start[0]); + + /* Check if Flash is (sufficiently) erased */ + if ((*dest2 & (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) { + return (2); + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts (); + + for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) { + addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00A000A0; + + dest2[i << sh8b] = data2[i]; + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts (); + + /* data polling for D7 */ + start = get_timer (0); + while ((dest2[i << sh8b] & (FLASH_WORD_SIZE) 0x00800080) != + (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) { + if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { + return (1); + } + } + } + + return (0); +} + +/*----------------------------------------------------------------------- + */ +#if 0 +static void write_via_fpu (vu_long * addr, ulong * data) +{ + __asm__ __volatile__ ("lfd 1, 0(%0)"::"r" (data)); + __asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr)); } +#endif + /*----------------------------------------------------------------------- */ +static __inline__ unsigned long get_msr (void) +{ + unsigned long msr; + + __asm__ __volatile__ ("mfmsr %0":"=r" (msr):); + + return msr; +} + +static __inline__ void set_msr (unsigned long msr) +{ + __asm__ __volatile__ ("mtmsr %0"::"r" (msr)); +} |