diff options
author | Wolfgang Denk <wd@denx.de> | 2011-08-26 02:25:44 +0000 |
---|---|---|
committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-09-04 11:36:14 +0200 |
commit | 37a9b4d0b7457f6d1c1998fff2372b7f92bc1d8c (patch) | |
tree | 20346a34f247598556fcb0905b64aa319171d516 /board/cmc_pu2/flash.c | |
parent | b5508344581d785b495df6e2b9cb94a13360afb5 (diff) | |
download | u-boot-imx-37a9b4d0b7457f6d1c1998fff2372b7f92bc1d8c.zip u-boot-imx-37a9b4d0b7457f6d1c1998fff2372b7f92bc1d8c.tar.gz u-boot-imx-37a9b4d0b7457f6d1c1998fff2372b7f92bc1d8c.tar.bz2 |
ARM: remove broken "cmc_pu2" board
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'board/cmc_pu2/flash.c')
-rw-r--r-- | board/cmc_pu2/flash.c | 469 |
1 files changed, 0 insertions, 469 deletions
diff --git a/board/cmc_pu2/flash.c b/board/cmc_pu2/flash.c deleted file mode 100644 index d10faab..0000000 --- a/board/cmc_pu2/flash.c +++ /dev/null @@ -1,469 +0,0 @@ -/* - * (C) Copyright 2003-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2004 - * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de - * - * Modified for the CMC PU2 by (C) Copyright 2004 Gary Jennejohn - * garyj@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> - -#ifndef CONFIG_ENV_ADDR -#define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) -#endif - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -#define FLASH_CYCLE1 0x0555 -#define FLASH_CYCLE2 0x02AA - -/*----------------------------------------------------------------------- - * Functions - */ -static ulong flash_get_size(vu_short *addr, flash_info_t *info); -static void flash_reset(flash_info_t *info); -static int write_word_amd(flash_info_t *info, vu_short *dest, ushort data); -static flash_info_t *flash_get_info(ulong base); - -/*----------------------------------------------------------------------- - * flash_init() - * - * sets up flash_info and returns size of FLASH (bytes) - */ -unsigned long flash_init (void) -{ - unsigned long size = 0; - ulong flashbase = CONFIG_SYS_FLASH_BASE; - - /* Init: no FLASHes known */ - memset(&flash_info[0], 0, sizeof(flash_info_t)); - - flash_info[0].size = flash_get_size((vu_short *)flashbase, &flash_info[0]); - - size = flash_info[0].size; - -#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE - /* monitor protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CONFIG_SYS_MONITOR_BASE, - CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, - flash_get_info(CONFIG_SYS_MONITOR_BASE)); -#endif - -#ifdef CONFIG_ENV_IS_IN_FLASH - /* ENV protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, - CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1, - flash_get_info(CONFIG_ENV_ADDR)); -#endif - - return size ? size : 1; -} - -/*----------------------------------------------------------------------- - */ -static void flash_reset(flash_info_t *info) -{ - vu_short *base = (vu_short *)(info->start[0]); - - /* Put FLASH back in read mode */ - if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) - *base = 0x00FF; /* Intel Read Mode */ - else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) - *base = 0x00F0; /* AMD Read Mode */ -} - -/*----------------------------------------------------------------------- - */ - -static flash_info_t *flash_get_info(ulong base) -{ - int i; - flash_info_t * info; - - info = NULL; - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i ++) { - info = & flash_info[i]; - if (info->size && info->start[0] <= base && - base <= info->start[0] + info->size - 1) - break; - } - - return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info; -} - -/*----------------------------------------------------------------------- - */ - -void flash_print_info (flash_info_t *info) -{ - int i; - - 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_BM: printf ("BRIGHT MICRO "); break; - case FLASH_MAN_FUJ: printf ("FUJITSU "); break; - case FLASH_MAN_SST: printf ("SST "); break; - case FLASH_MAN_STM: printf ("STM "); break; - case FLASH_MAN_INTEL: printf ("INTEL "); break; - default: printf ("Unknown Vendor "); break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_S29GL064M: - printf ("S29GL064M-R6 (64Mbit, uniform sector size)\n"); - break; - default: - printf ("Unknown Chip Type\n"); - break; - } - - printf (" Size: %ld MB in %d Sectors\n", - info->size >> 20, - info->sector_count); - - printf (" Sector Start Addresses:"); - - for (i=0; i<info->sector_count; ++i) { - if ((i % 5) == 0) { - printf ("\n "); - } - printf (" %08lX%s", - info->start[i], - info->protect[i] ? " (RO)" : " "); - } - printf ("\n"); - return; -} - -/*----------------------------------------------------------------------- - */ - -/* - * The following code cannot be run from FLASH! - */ - -ulong flash_get_size (vu_short *addr, flash_info_t *info) -{ - int i; - ushort value; - ulong base = (ulong)addr; - - /* Write auto select command sequence */ - addr[FLASH_CYCLE1] = 0x00AA; /* for AMD, Intel ignores this */ - addr[FLASH_CYCLE2] = 0x0055; /* for AMD, Intel ignores this */ - addr[FLASH_CYCLE1] = 0x0090; /* selects Intel or AMD */ - - /* read Manufacturer ID */ - udelay(100); - value = addr[0]; - debug ("Manufacturer ID: %04X\n", value); - - switch (value) { - - case (AMD_MANUFACT & 0xFFFF): - debug ("Manufacturer: AMD (Spansion)\n"); - info->flash_id = FLASH_MAN_AMD; - break; - - case (INTEL_MANUFACT & 0xFFFF): - debug ("Manufacturer: Intel (not supported yet)\n"); - info->flash_id = FLASH_MAN_INTEL; - break; - - default: - printf ("Unknown Manufacturer ID: %04X\n", value); - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - goto out; - } - - value = addr[1]; - debug ("Device ID: %04X\n", value); - - switch (addr[1]) { - - case (AMD_ID_MIRROR & 0xFFFF): - debug ("Mirror Bit flash: addr[14] = %08X addr[15] = %08X\n", - addr[14], addr[15]); - - switch(addr[14]) { - case (AMD_ID_GL064M_2 & 0xFFFF): - if (addr[15] != (AMD_ID_GL064M_3 & 0xffff)) { - printf ("Chip: S29GLxxxM -> unknown\n"); - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - } else { - debug ("Chip: S29GL064M-R6\n"); - info->flash_id += FLASH_S29GL064M; - info->sector_count = 128; - info->size = 0x00800000; - for (i = 0; i < info->sector_count; i++) { - info->start[i] = base; - base += 0x10000; - } - } - break; /* => 16 MB */ - default: - printf ("Chip: *** unknown ***\n"); - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - break; - } - break; - - default: - printf ("Unknown Device ID: %04X\n", value); - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - break; - } - -out: - /* Put FLASH back in read mode */ - flash_reset(info); - - return (info->size); -} - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - vu_short *addr = (vu_short *)(info->start[0]); - int flag, prot, sect, ssect, l_sect; - ulong now, last, start; - - debug ("flash_erase: first: %d last: %d\n", s_first, s_last); - - 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_AMD_COMP)) { - printf ("Can't erase unknown flash type %08lx - aborted\n", - info->flash_id); - 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"); - } - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - /* - * Start erase on unprotected sectors. - * Since the flash can erase multiple sectors with one command - * we take advantage of that by doing the erase in chunks of - * 3 sectors. - */ - for (sect = s_first; sect <= s_last; ) { - l_sect = -1; - - addr[FLASH_CYCLE1] = 0x00AA; - addr[FLASH_CYCLE2] = 0x0055; - addr[FLASH_CYCLE1] = 0x0080; - addr[FLASH_CYCLE1] = 0x00AA; - addr[FLASH_CYCLE2] = 0x0055; - - /* do the erase in chunks of at most 3 sectors */ - for (ssect = 0; ssect < 3; ssect++) { - if ((sect + ssect) > s_last) - break; - if (info->protect[sect + ssect] == 0) { /* not protected */ - addr = (vu_short *)(info->start[sect + ssect]); - addr[0] = 0x0030; - l_sect = sect + ssect; - } - } - /* 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 = 0; - addr = (vu_short *)(info->start[l_sect]); - while ((addr[0] & 0x0080) != 0x0080) { - if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - return 1; - } - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - putc ('.'); - last = now; - } - } - addr = (vu_short *)info->start[0]; - addr[0] = 0x00F0; /* reset bank */ - sect += ssect; - } - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - -DONE: - /* reset to read mode */ - addr = (vu_short *)info->start[0]; - addr[0] = 0x00F0; /* 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 wp, data; - int rc; - - if (addr & 1) { - printf ("unaligned destination not supported\n"); - return ERR_ALIGN; - }; - - if ((int) src & 1) { - printf ("unaligned source not supported\n"); - return ERR_ALIGN; - }; - - wp = addr; - - while (cnt >= 2) { - data = *((vu_short *)src); - if ((rc = write_word_amd(info, (vu_short *)wp, data)) != 0) { -printf ("write_buff 1: write_word_amd() rc=%d\n", rc); - return (rc); - } - src += 2; - wp += 2; - cnt -= 2; - } - - if (cnt == 0) { - return (ERR_OK); - } - - if (cnt == 1) { - data = (*((volatile u8 *) src)) | (*((volatile u8 *) (wp + 1)) << 8); - if ((rc = write_word_amd(info, (vu_short *)wp, data)) != 0) { -printf ("write_buff 1: write_word_amd() rc=%d\n", rc); - return (rc); - } - src += 1; - wp += 1; - cnt -= 1; - } - - return ERR_OK; -} - -/*----------------------------------------------------------------------- - * Write a word to Flash for AMD FLASH - * A word is 16 or 32 bits, whichever the bus width of the flash bank - * (not an individual chip) is. - * - * returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_word_amd (flash_info_t *info, vu_short *dest, ushort data) -{ - int flag; - vu_short *base; /* first address in flash bank */ - ulong start; - - /* Check if Flash is (sufficiently) erased */ - if ((*dest & data) != data) { - return (2); - } - - base = (vu_short *)(info->start[0]); - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - base[FLASH_CYCLE1] = 0x00AA; /* unlock */ - base[FLASH_CYCLE2] = 0x0055; /* unlock */ - base[FLASH_CYCLE1] = 0x00A0; /* selects program mode */ - - *dest = data; /* start programming the data */ - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - start = get_timer(0); - - /* data polling for D7 */ - while ((*dest & 0x0080) != (data & 0x0080)) { - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *dest = 0x00F0; /* reset bank */ - return (1); - } - } - return (0); -} |