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Diffstat (limited to 'board/cmc_pu2/flash.c')
-rw-r--r--board/cmc_pu2/flash.c469
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 d10faab52a..0000000000
--- 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);
-}
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