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author | wdenk <wdenk> | 2005-04-03 15:51:42 (GMT) |
---|---|---|
committer | wdenk <wdenk> | 2005-04-03 15:51:42 (GMT) |
commit | 756f586a73d756f163dc03a049d650cc1a5b5899 (patch) | |
tree | 15cd902e173aa72118ee90622ffe5492d7243b70 /board/hidden_dragon/flash.c | |
parent | b1bf6f2c9b4aa17c6ccb7a631c99fae7f4b5744b (diff) | |
download | u-boot-756f586a73d756f163dc03a049d650cc1a5b5899.tar.xz |
* Patch by Yusdi Santoso, 22 Oct 2004:
- Add support for HIDDEN_DRAGON board
- fix endianess problem in driver/rtl1839.c
* Patch by Allen Curtis, 21 Oct 2004:
support multiple serial ports
Diffstat (limited to 'board/hidden_dragon/flash.c')
-rw-r--r-- | board/hidden_dragon/flash.c | 575 |
1 files changed, 575 insertions, 0 deletions
diff --git a/board/hidden_dragon/flash.c b/board/hidden_dragon/flash.c new file mode 100644 index 0000000..21c5a01 --- /dev/null +++ b/board/hidden_dragon/flash.c @@ -0,0 +1,575 @@ +/* + * (C) Copyright 2004 + * Yusdi Santoso, Adaptec Inc., yusdi_santoso@adaptec.com + * + * (C) Copyright 2000-2005 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <mpc824x.h> +#include <asm/processor.h> +#include <asm/pci_io.h> +#include <w83c553f.h> + +#define ROM_CS0_START 0xFF800000 +#define ROM_CS1_START 0xFF000000 + +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ + +#if defined(CFG_ENV_IS_IN_FLASH) +# ifndef CFG_ENV_ADDR +# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET) +# endif +# ifndef CFG_ENV_SIZE +# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE +# endif +# ifndef CFG_ENV_SECT_SIZE +# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE +# endif +#endif + +/*----------------------------------------------------------------------- + * Functions + */ +static int write_word (flash_info_t *info, ulong dest, ulong data); + +/*flash command address offsets*/ + +#define ADDR0 (0xAAA) +#define ADDR1 (0x555) +#define ADDR3 (0x001) + +#define FLASH_WORD_SIZE unsigned char + +/*----------------------------------------------------------------------- + */ + +static unsigned long flash_id (unsigned char mfct, unsigned char chip) + __attribute__ ((const)); + +typedef struct { + FLASH_WORD_SIZE extval; + unsigned short intval; +} map_entry; + +static unsigned long flash_id (unsigned char mfct, unsigned char chip) +{ + static const map_entry mfct_map[] = { + {(FLASH_WORD_SIZE) AMD_MANUFACT, + (unsigned short) ((unsigned long) FLASH_MAN_AMD >> 16)}, + {(FLASH_WORD_SIZE) FUJ_MANUFACT, + (unsigned short) ((unsigned long) FLASH_MAN_FUJ >> 16)}, + {(FLASH_WORD_SIZE) STM_MANUFACT, + (unsigned short) ((unsigned long) FLASH_MAN_STM >> 16)}, + {(FLASH_WORD_SIZE) MT_MANUFACT, + (unsigned short) ((unsigned long) FLASH_MAN_MT >> 16)}, + {(FLASH_WORD_SIZE) INTEL_MANUFACT, + (unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)}, + {(FLASH_WORD_SIZE) INTEL_ALT_MANU, + (unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)} + }; + + static const map_entry chip_map[] = { + {AMD_ID_F040B, FLASH_AM040}, + {(FLASH_WORD_SIZE) STM_ID_x800AB, FLASH_STM800AB} + }; + + const map_entry *p; + unsigned long result = FLASH_UNKNOWN; + + /* find chip id */ + for (p = &chip_map[0]; + p < &chip_map[sizeof chip_map / sizeof chip_map[0]]; p++) + if (p->extval == chip) { + result = FLASH_VENDMASK | p->intval; + break; + } + + /* find vendor id */ + for (p = &mfct_map[0]; + p < &mfct_map[sizeof mfct_map / sizeof mfct_map[0]]; p++) + if (p->extval == mfct) { + result &= ~FLASH_VENDMASK; + result |= (unsigned long) p->intval << 16; + break; + } + + return result; +} + +unsigned long flash_init (void) +{ + unsigned long i; + unsigned char j; + static const ulong flash_banks[] = CFG_FLASH_BANKS; + + /* Init: no FLASHes known */ + for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { + flash_info_t *const pflinfo = &flash_info[i]; + + pflinfo->flash_id = FLASH_UNKNOWN; + pflinfo->size = 0; + pflinfo->sector_count = 0; + } + + /* Enable writes to Hidden Dragon flash */ + { + register unsigned char temp; + + CONFIG_READ_BYTE (CFG_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR, + temp); + temp &= ~0x20; /* clear BIOSWP bit */ + CONFIG_WRITE_BYTE (CFG_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR, + temp); + } + + for (i = 0; i < sizeof flash_banks / sizeof flash_banks[0]; i++) { + flash_info_t *const pflinfo = &flash_info[i]; + const unsigned long base_address = flash_banks[i]; + volatile FLASH_WORD_SIZE *const flash = + (FLASH_WORD_SIZE *) base_address; + + flash[0xAAA << (3 * i)] = 0xaa; + flash[0x555 << (3 * i)] = 0x55; + flash[0xAAA << (3 * i)] = 0x90; + __asm__ __volatile__ ("sync"); + + pflinfo->flash_id = + flash_id (flash[0x0], flash[0x2 + 14 * i]); + + switch (pflinfo->flash_id & FLASH_TYPEMASK) { + case FLASH_AM040: + pflinfo->size = 0x00080000; + pflinfo->sector_count = 8; + for (j = 0; j < 8; j++) { + pflinfo->start[j] = + base_address + 0x00010000 * j; + pflinfo->protect[j] = flash[(j << 16) | 0x2]; + } + break; + case FLASH_STM800AB: + pflinfo->size = 0x00100000; + pflinfo->sector_count = 19; + pflinfo->start[0] = base_address; + pflinfo->start[1] = base_address + 0x4000; + pflinfo->start[2] = base_address + 0x6000; + pflinfo->start[3] = base_address + 0x8000; + for (j = 1; j < 16; j++) { + pflinfo->start[j + 3] = + base_address + 0x00010000 * j; + } + break; + default: + /* The chip used is not listed in flash_id + TODO: Change this to explicitly detect the flash type + */ + { + int sector_addr = base_address; + + pflinfo->size = 0x00200000; + pflinfo->sector_count = 35; + pflinfo->start[0] = sector_addr; + sector_addr += 0x4000; /* 16K */ + pflinfo->start[1] = sector_addr; + sector_addr += 0x2000; /* 8K */ + pflinfo->start[2] = sector_addr; + sector_addr += 0x2000; /* 8K */ + pflinfo->start[3] = sector_addr; + sector_addr += 0x8000; /* 32K */ + + for (j = 4; j < 35; j++) { + pflinfo->start[j] = sector_addr; + sector_addr += 0x10000; /* 64K */ + } + } + break; + } + /* 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]); +#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]); +#endif + + /* reset device to read mode */ + flash[0x0000] = 0xf0; + __asm__ __volatile__ ("sync"); + } + + /* only have 1 bank */ + return flash_info[0].size; +} + +/*----------------------------------------------------------------------- + */ +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; +} + +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; + + /* 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 */ + } 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; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ + +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)); +} + +/*----------------------------------------------------------------------- + * Write a word to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +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 *dest2; + 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); +} |