diff options
Diffstat (limited to 'board/netstal')
| -rw-r--r-- | board/netstal/common/hcu_flash.c | 514 |
1 files changed, 0 insertions, 514 deletions
diff --git a/board/netstal/common/hcu_flash.c b/board/netstal/common/hcu_flash.c deleted file mode 100644 index d0322f2..0000000 --- a/board/netstal/common/hcu_flash.c +++ /dev/null @@ -1,514 +0,0 @@ -/* - * (C) Copyright 2000-2004 - * 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 <ppc4xx.h> -#include <asm/processor.h> - -#if CFG_MAX_FLASH_BANKS != 1 -#error "CFG_MAX_FLASH_BANKS must be 1" -#endif -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/*----------------------------------------------------------------------- - * Functions - */ -static ulong flash_get_size (vu_long * addr, flash_info_t * info); -static int write_word (flash_info_t * info, ulong dest, ulong data); -static void flash_get_offsets (ulong base, flash_info_t * info); - -#define ADDR0 0x5555 -#define ADDR1 0x2aaa -#define FLASH_WORD_SIZE unsigned char - -/*-----------------------------------------------------------------------*/ - -unsigned long flash_init (void) -{ - unsigned long size_b0; - - /* Init: no FLASHes known */ - flash_info[0].flash_id = FLASH_UNKNOWN; - - /* Static FLASH Bank configuration here - FIXME XXX */ - - size_b0 = flash_get_size ((vu_long *) FLASH_BASE0_PRELIM, - &flash_info[0]); - - if (flash_info[0].flash_id == FLASH_UNKNOWN) { - printf ("## Unknown FLASH on Bank 0- Size=0x%08lx=%ld MB\n", - size_b0, size_b0 << 20); - } - - /* Only one bank */ - /* Setup offsets */ - flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]); - - /* Monitor protection ON by default */ - (void) flash_protect (FLAG_PROTECT_SET, - FLASH_BASE0_PRELIM, - FLASH_BASE0_PRELIM + monitor_flash_len - 1, - &flash_info[0]); - flash_info[0].size = size_b0; - - return size_b0; -} - - -/*-----------------------------------------------------------------------*/ -/* - * This implementation assumes that the flash chips are uniform sector - * devices. This is true for all likely flash devices on a HCUx. - */ -static void flash_get_offsets (ulong base, flash_info_t * info) -{ - unsigned idx; - unsigned long sector_size = info->size / info->sector_count; - - for (idx = 0; idx < info->sector_count; idx += 1) { - info->start[idx] = base + (idx * sector_size); - } -} - -/*-----------------------------------------------------------------------*/ -void flash_print_info (flash_info_t * info) -{ - int i; - int k; - int size; - int erased; - volatile unsigned long *flash; - - if (info->flash_id == FLASH_UNKNOWN) { - printf ("missing or unknown FLASH type\n"); - return; - } - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_AMD: - printf ("AMD "); - break; - case FLASH_MAN_FUJ: - printf ("FUJITSU "); - break; - case FLASH_MAN_SST: - printf ("SST "); - break; - case FLASH_MAN_STM: - printf ("ST Micro "); - break; - default: - printf ("Unknown Vendor "); - break; - } - - /* (Reduced table of only parts expected in HCUx boards.) */ - switch (info->flash_id) { - case FLASH_MAN_AMD | FLASH_AM040: - printf ("AM29F040 (512 Kbit, uniform sector size)\n"); - break; - case FLASH_MAN_STM | FLASH_AM040: - printf ("MM29W040W (512 Kbit, uniform sector size)\n"); - break; - default: - printf ("Unknown Chip Type\n"); - break; - } - - printf (" Size: %ld KB in %d Sectors\n", - info->size >> 10, info->sector_count); - - printf (" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - /* - * Check if whole sector is erased - */ - if (i != (info->sector_count - 1)) - size = info->start[i + 1] - info->start[i]; - else - size = info->start[0] + info->size - info->start[i]; - erased = 1; - flash = (volatile unsigned long *) info->start[i]; - size = size >> 2; /* divide by 4 for longword access */ - for (k = 0; k < size; k++) { - if (*flash++ != 0xffffffff) { - erased = 0; - break; - } - } - - if ((i % 5) == 0) - printf ("\n "); - printf (" %08lX%s%s", - info->start[i], - erased ? " E" : " ", info->protect[i] ? "RO " : " " - ); - } - printf ("\n"); - return; -} - -/*-----------------------------------------------------------------------*/ - -/* - * The following code cannot be run from FLASH! - */ -static ulong flash_get_size (vu_long * addr, flash_info_t * info) -{ - short i; - FLASH_WORD_SIZE value; - ulong base = (ulong) addr; - volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr; - - /* Write auto select command: read Manufacturer ID */ - asm("isync"); - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - asm("isync"); - addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - asm("isync"); - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00900090; - asm("isync"); - - value = addr2[0]; - asm("isync"); - - switch (value) { - case (FLASH_WORD_SIZE) AMD_MANUFACT: - info->flash_id = FLASH_MAN_AMD; - break; - case (FLASH_WORD_SIZE) FUJ_MANUFACT: - info->flash_id = FLASH_MAN_FUJ; - break; - case (FLASH_WORD_SIZE) SST_MANUFACT: - info->flash_id = FLASH_MAN_SST; - break; - case (FLASH_WORD_SIZE)STM_MANUFACT: - info->flash_id = FLASH_MAN_STM; - break; - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - printf("Unknown flash manufacturer code: 0x%x at %p\n", - value, addr); - addr2[ADDR0] = (FLASH_WORD_SIZE) 0; - return (0); /* no or unknown flash */ - } - - value = addr2[1]; /* device ID */ - - switch (value) { - case (FLASH_WORD_SIZE) AMD_ID_F040B: - info->flash_id += FLASH_AM040; - info->sector_count = 8; - info->size = 0x0080000; /* => 512 ko */ - break; - case (FLASH_WORD_SIZE) AMD_ID_LV040B: - info->flash_id += FLASH_AM040; - info->sector_count = 8; - info->size = 0x0080000; /* => 512 ko */ - break; - case (FLASH_WORD_SIZE)STM_ID_M29W040B: /* most likele HCU5 chip */ - info->flash_id += FLASH_AM040; - info->sector_count = 8; - info->size = 0x0080000; /* => 512 ko */ - break; - default: - info->flash_id = FLASH_UNKNOWN; - return (0); /* => no or unknown flash */ - - } - - /* Calculate the sector offsets (Use HCUx Optimized code). */ - flash_get_offsets(base, info); - - /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) { - /* read sector protection at sector address, - *(A7 .. A0) = 0x02 - * D0 = 1 if protected - */ - addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]); - if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) - info->protect[i] = 0; - else - info->protect[i] = addr2[2] & 1; - } - - /* - * Prevent writes to uninitialized FLASH. - */ - if (info->flash_id != FLASH_UNKNOWN) { - addr2 = (FLASH_WORD_SIZE *) info->start[0]; - *addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ - } - - return (info->size); -} - -int wait_for_DQ7 (flash_info_t * info, int sect) -{ - ulong start, now, last; - volatile FLASH_WORD_SIZE *addr = - (FLASH_WORD_SIZE *) (info->start[sect]); - - start = get_timer (0); - last = start; - 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 */ - putc ('.'); - last = now; - } - } - return 0; -} - -/*-----------------------------------------------------------------------*/ - -int flash_erase (flash_info_t * info, int s_first, int s_last) -{ - volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]); - volatile FLASH_WORD_SIZE *addr2; - int flag, prot, sect, l_sect; - int i; - - 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) { - 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 not erased!\n", - prot); - } else { - printf ("\n"); - } - - l_sect = -1; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts (); - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect <= s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ - addr2 = (FLASH_WORD_SIZE *) (info->start[sect]); - printf ("Erasing sector %p\n", addr2); /* CLH */ - - if ((info->flash_id & FLASH_VENDMASK) == - FLASH_MAN_SST) { - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - /* block erase */ - addr2[0] = (FLASH_WORD_SIZE) 0x00500050; - for (i = 0; i < 50; i++) udelay (1000); - } else { - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - /* sector erase */ - addr2[0] = (FLASH_WORD_SIZE) 0x00300030; - } - l_sect = sect; - /* - * Wait for each sector to complete, it's more - * reliable. According to AMD Spec, you must - * issue all erase commands within a specified - * timeout. This has been seen to fail, especially - * if printf()s are included (for debug)!! - */ - wait_for_DQ7 (info, 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; - wait_for_DQ7 (info, l_sect); - -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 = (FLASH_WORD_SIZE *) dest; - volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data; - ulong start; - int i; - - /* Check if Flash is (sufficiently) erased */ - if ((*((volatile FLASH_WORD_SIZE *) dest) & - (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) { - return (2); - } - - for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) { - int flag; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts (); - - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0; - - dest2[i] = data2[i]; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts (); - - /* data polling for D7 */ - start = get_timer (0); - while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) != - (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) { - - if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { - return (1); - } - } - } - - return (0); -} |