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authorJon Loeliger <jdl@freescale.com>2008-03-05 18:05:45 -0600
committerWolfgang Denk <wd@denx.de>2008-03-25 23:00:00 +0100
commitb7e24d283e34727c2a6cdfdac2e09a426c579b73 (patch)
tree99a18ef12fe560626e74fc504c5b76f05087a3ba /board/mpc8260ads/flash.c
parent6a8a5dc4759867c45aa95580deb8bf26669a5d97 (diff)
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FSL: Move board/mpc8260ads under board/freescale
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Diffstat (limited to 'board/mpc8260ads/flash.c')
-rw-r--r--board/mpc8260ads/flash.c492
1 files changed, 0 insertions, 492 deletions
diff --git a/board/mpc8260ads/flash.c b/board/mpc8260ads/flash.c
deleted file mode 100644
index 59997aa..0000000
--- a/board/mpc8260ads/flash.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- * (C) Copyright 2000, 2001
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com
- * Add support the Sharp chips on the mpc8260ads.
- * I started with board/ip860/flash.c and made changes I found in
- * the MTD project by David Schleef.
- *
- * (C) Copyright 2003 Arabella Software Ltd.
- * Yuli Barcohen <yuli@arabellasw.com>
- * Re-written to support multi-bank flash SIMMs.
- * Added support for real protection and JFFS2.
- *
- * 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>
-
-/* Intel-compatible flash ID */
-#define INTEL_COMPAT 0x89898989
-#define INTEL_ALT 0xB0B0B0B0
-
-/* Intel-compatible flash commands */
-#define INTEL_PROGRAM 0x10101010
-#define INTEL_ERASE 0x20202020
-#define INTEL_CLEAR 0x50505050
-#define INTEL_LOCKBIT 0x60606060
-#define INTEL_PROTECT 0x01010101
-#define INTEL_STATUS 0x70707070
-#define INTEL_READID 0x90909090
-#define INTEL_CONFIRM 0xD0D0D0D0
-#define INTEL_RESET 0xFFFFFFFF
-
-/* Intel-compatible flash status bits */
-#define INTEL_FINISHED 0x80808080
-#define INTEL_OK 0x80808080
-
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-/*-----------------------------------------------------------------------
- * This board supports 32-bit wide flash SIMMs (4x8-bit configuration.)
- * Up to 32MB of flash supported (up to 4 banks.)
- * BCSR is used for flash presence detect (page 4-65 of the User's Manual)
- *
- * The following code can not run from flash!
- */
-unsigned long flash_init (void)
-{
- ulong size = 0, sect_start, sect_size = 0, bank_size;
- ushort sect_count = 0;
- int i, j, nbanks;
- vu_long *addr = (vu_long *)CFG_FLASH_BASE;
- vu_long *bcsr = (vu_long *)CFG_BCSR;
-
- switch (bcsr[2] & 0xF) {
- case 0:
- nbanks = 4;
- break;
- case 1:
- nbanks = 2;
- break;
- case 2:
- nbanks = 1;
- break;
- default: /* Unsupported configurations */
- nbanks = CFG_MAX_FLASH_BANKS;
- }
-
- if (nbanks > CFG_MAX_FLASH_BANKS)
- nbanks = CFG_MAX_FLASH_BANKS;
-
- for (i = 0; i < nbanks; i++) {
- *addr = INTEL_READID; /* Read Intelligent Identifier */
- if ((addr[0] == INTEL_COMPAT) || (addr[0] == INTEL_ALT)) {
- switch (addr[1]) {
- case SHARP_ID_28F016SCL:
- case SHARP_ID_28F016SCZ:
- flash_info[i].flash_id = FLASH_MAN_SHARP | FLASH_LH28F016SCT;
- sect_count = 32;
- sect_size = 0x40000;
- break;
- default:
- flash_info[i].flash_id = FLASH_UNKNOWN;
- sect_count = CFG_MAX_FLASH_SECT;
- sect_size =
- CFG_FLASH_SIZE / CFG_MAX_FLASH_BANKS / CFG_MAX_FLASH_SECT;
- }
- }
- else
- flash_info[i].flash_id = FLASH_UNKNOWN;
- if (flash_info[i].flash_id == FLASH_UNKNOWN) {
- printf("### Unknown flash ID %08lX %08lX at address %08lX ###\n",
- addr[0], addr[1], (ulong)addr);
- size = 0;
- *addr = INTEL_RESET; /* Reset bank to Read Array mode */
- break;
- }
- flash_info[i].sector_count = sect_count;
- flash_info[i].size = bank_size = sect_size * sect_count;
- size += bank_size;
- sect_start = (ulong)addr;
- for (j = 0; j < sect_count; j++) {
- addr = (vu_long *)sect_start;
- flash_info[i].start[j] = sect_start;
- flash_info[i].protect[j] = (addr[2] == 0x01010101);
- sect_start += sect_size;
- }
- *addr = INTEL_RESET; /* Reset bank to Read Array mode */
- addr = (vu_long *)sect_start;
- }
-
- if (size == 0) { /* Unknown flash, fill with hard-coded values */
- sect_start = CFG_FLASH_BASE;
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- flash_info[i].size = CFG_FLASH_SIZE / CFG_MAX_FLASH_BANKS;
- flash_info[i].sector_count = sect_count;
- for (j = 0; j < sect_count; j++) {
- flash_info[i].start[j] = sect_start;
- flash_info[i].protect[j] = 0;
- sect_start += sect_size;
- }
- }
- size = CFG_FLASH_SIZE;
- }
- else
- for (i = nbanks; i < CFG_MAX_FLASH_BANKS; i++) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- flash_info[i].size = 0;
- flash_info[i].sector_count = 0;
- }
-
-#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
- /* monitor protection ON by default */
- flash_protect(FLAG_PROTECT_SET,
- CFG_MONITOR_BASE,
- CFG_MONITOR_BASE+monitor_flash_len-1,
- &flash_info[0]);
-#endif
-
-#ifdef CFG_ENV_IS_IN_FLASH
- /* ENV protection ON by default */
- flash_protect(FLAG_PROTECT_SET,
- CFG_ENV_ADDR,
- CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
- &flash_info[0]);
-#endif
- return (size);
-}
-
-/*-----------------------------------------------------------------------
- */
-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_INTEL: printf ("Intel "); break;
- case FLASH_MAN_SHARP: printf ("Sharp "); break;
- default: printf ("Unknown Vendor "); break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_28F016SV: printf ("28F016SV (16 Mbit, 32 x 64k)\n");
- break;
- case FLASH_28F160S3: printf ("28F160S3 (16 Mbit, 32 x 512K)\n");
- break;
- case FLASH_28F320S3: printf ("28F320S3 (32 Mbit, 64 x 512K)\n");
- break;
- case FLASH_LH28F016SCT: printf ("28F016SC (16 Mbit, 32 x 64K)\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");
-}
-
-/*-----------------------------------------------------------------------
- */
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- int flag, prot, sect;
- ulong start, now, 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_VENDMASK) != FLASH_MAN_INTEL)
- && ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_SHARP) ) {
- 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");
- }
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- vu_long *addr = (vu_long *)(info->start[sect]);
-
- last = start = get_timer (0);
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- /* Clear Status Register */
- *addr = INTEL_CLEAR;
- /* Single Block Erase Command */
- *addr = INTEL_ERASE;
- /* Confirm */
- *addr = INTEL_CONFIRM;
-
- if((info->flash_id & FLASH_TYPEMASK) != FLASH_LH28F016SCT) {
- /* Resume Command, as per errata update */
- *addr = INTEL_CONFIRM;
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) {
- if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- *addr = INTEL_RESET; /* reset bank */
- return 1;
- }
- /* show that we're waiting */
- if ((now - last) > 1000) { /* every second */
- putc ('.');
- last = now;
- }
- }
-
- if (*addr != INTEL_OK) {
- printf("Block erase failed at %08X, CSR=%08X\n",
- (uint)addr, (uint)*addr);
- *addr = INTEL_RESET; /* reset bank */
- return 1;
- }
-
- /* reset to read mode */
- *addr = INTEL_RESET;
- }
- }
-
- printf (" done\n");
- return 0;
-}
-
-/*-----------------------------------------------------------------------
- * 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)
-{
- ulong start;
- int rc = 0;
- int flag;
- vu_long *addr = (vu_long *)dest;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*addr & data) != data) {
- return (2);
- }
-
- *addr = INTEL_CLEAR; /* Clear status register */
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- /* Write Command */
- *addr = INTEL_PROGRAM;
-
- /* Write Data */
- *addr = data;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* data polling for D7 */
- start = get_timer (0);
- while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) {
- if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
- printf("Write timed out\n");
- rc = 1;
- break;
- }
- }
- if (*addr != INTEL_OK) {
- printf ("Write failed at %08X, CSR=%08X\n", (uint)addr, (uint)*addr);
- rc = 1;
- }
-
- *addr = INTEL_RESET; /* Reset to read array mode */
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * 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 */
-
- *(vu_long *)wp = INTEL_RESET; /* Reset to read array mode */
-
- /*
- * 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);
- }
-
- rc = write_word(info, wp, data);
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Set/Clear sector's lock bit, returns:
- * 0 - OK
- * 1 - Error (timeout, voltage problems, etc.)
- */
-int flash_real_protect(flash_info_t *info, long sector, int prot)
-{
- ulong start;
- int i;
- int rc = 0;
- vu_long *addr = (vu_long *)(info->start[sector]);
- int flag = disable_interrupts();
-
- *addr = INTEL_CLEAR; /* Clear status register */
- if (prot) { /* Set sector lock bit */
- *addr = INTEL_LOCKBIT; /* Sector lock bit */
- *addr = INTEL_PROTECT; /* set */
- }
- else { /* Clear sector lock bit */
- *addr = INTEL_LOCKBIT; /* All sectors lock bits */
- *addr = INTEL_CONFIRM; /* clear */
- }
-
- start = get_timer(0);
- while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) {
- if (get_timer(start) > CFG_FLASH_UNLOCK_TOUT) {
- printf("Flash lock bit operation timed out\n");
- rc = 1;
- break;
- }
- }
-
- if (*addr != INTEL_OK) {
- printf("Flash lock bit operation failed at %08X, CSR=%08X\n",
- (uint)addr, (uint)*addr);
- rc = 1;
- }
-
- if (!rc)
- info->protect[sector] = prot;
-
- /*
- * Clear lock bit command clears all sectors lock bits, so
- * we have to restore lock bits of protected sectors.
- */
- if (!prot)
- for (i = 0; i < info->sector_count; i++)
- if (info->protect[i]) {
- addr = (vu_long *)(info->start[i]);
- *addr = INTEL_LOCKBIT; /* Sector lock bit */
- *addr = INTEL_PROTECT; /* set */
- udelay(CFG_FLASH_LOCK_TOUT * 1000);
- }
-
- if (flag)
- enable_interrupts();
-
- *addr = INTEL_RESET; /* Reset to read array mode */
-
- return rc;
-}