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Diffstat (limited to 'board/samsung/smdk2400/flash.c')
-rw-r--r--board/samsung/smdk2400/flash.c492
1 files changed, 0 insertions, 492 deletions
diff --git a/board/samsung/smdk2400/flash.c b/board/samsung/smdk2400/flash.c
deleted file mode 100644
index 47382fe..0000000
--- a/board/samsung/smdk2400/flash.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <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
- */
-
-/* #define DEBUG */
-
-#include <common.h>
-#include <environment.h>
-
-#define FLASH_BANK_SIZE 0x1000000 /* 2 x 8 MB */
-#define MAIN_SECT_SIZE 0x40000 /* 2 x 128 kB */
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-
-#define CMD_READ_ARRAY 0x00FF00FF
-#define CMD_IDENTIFY 0x00900090
-#define CMD_ERASE_SETUP 0x00200020
-#define CMD_ERASE_CONFIRM 0x00D000D0
-#define CMD_PROGRAM 0x00400040
-#define CMD_RESUME 0x00D000D0
-#define CMD_SUSPEND 0x00B000B0
-#define CMD_STATUS_READ 0x00700070
-#define CMD_STATUS_RESET 0x00500050
-
-#define BIT_BUSY 0x00800080
-#define BIT_ERASE_SUSPEND 0x00400040
-#define BIT_ERASE_ERROR 0x00200020
-#define BIT_PROGRAM_ERROR 0x00100010
-#define BIT_VPP_RANGE_ERROR 0x00080008
-#define BIT_PROGRAM_SUSPEND 0x00040004
-#define BIT_PROTECT_ERROR 0x00020002
-#define BIT_UNDEFINED 0x00010001
-
-#define BIT_SEQUENCE_ERROR 0x00300030
-#define BIT_TIMEOUT 0x80000000
-
-/*-----------------------------------------------------------------------
- */
-
-ulong flash_init (void)
-{
- int i, j;
- ulong size = 0;
-
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
- ulong flashbase = 0;
-
- flash_info[i].flash_id =
- (INTEL_MANUFACT & FLASH_VENDMASK) |
- (INTEL_ID_28F640J3A & FLASH_TYPEMASK);
- flash_info[i].size = FLASH_BANK_SIZE;
- flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
- memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
- if (i == 0)
- flashbase = CONFIG_SYS_FLASH_BASE;
- else
- panic ("configured too many flash banks!\n");
- for (j = 0; j < flash_info[i].sector_count; j++) {
- flash_info[i].start[j] = flashbase;
-
- /* uniform sector size */
- flashbase += MAIN_SECT_SIZE;
- }
- size += flash_info[i].size;
- }
-
- /*
- * Protect monitor and environment sectors
- */
- flash_protect ( FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
- &flash_info[0]);
-
- flash_protect ( FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, &flash_info[0]);
-
-#ifdef CONFIG_ENV_ADDR_REDUND
- flash_protect ( FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR_REDUND,
- CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
- &flash_info[0]);
-#endif
-
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t * info)
-{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case (INTEL_MANUFACT & FLASH_VENDMASK):
- printf ("Intel: ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (INTEL_ID_28F640J3A & FLASH_TYPEMASK):
- printf ("2x 28F640J3A (64Mbit)\n");
- break;
- default:
- printf ("Unknown Chip Type\n");
- goto Done;
- 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");
-
-Done: ;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_error (ulong code)
-{
- /* Check bit patterns */
- /* SR.7=0 is busy, SR.7=1 is ready */
- /* all other flags indicate error on 1 */
- /* SR.0 is undefined */
- /* Timeout is our faked flag */
-
- /* sequence is described in Intel 290644-005 document */
-
- /* check Timeout */
- if (code & BIT_TIMEOUT) {
- puts ("Timeout\n");
- return ERR_TIMOUT;
- }
-
- /* check Busy, SR.7 */
- if (~code & BIT_BUSY) {
- puts ("Busy\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Vpp low, SR.3 */
- if (code & BIT_VPP_RANGE_ERROR) {
- puts ("Vpp range error\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Device Protect Error, SR.1 */
- if (code & BIT_PROTECT_ERROR) {
- puts ("Device protect error\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Command Seq Error, SR.4 & SR.5 */
- if (code & BIT_SEQUENCE_ERROR) {
- puts ("Command seqence error\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Block Erase Error, SR.5 */
- if (code & BIT_ERASE_ERROR) {
- puts ("Block erase error\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Program Error, SR.4 */
- if (code & BIT_PROGRAM_ERROR) {
- puts ("Program error\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Block Erase Suspended, SR.6 */
- if (code & BIT_ERASE_SUSPEND) {
- puts ("Block erase suspended\n");
- return ERR_PROG_ERROR;
- }
-
- /* check Program Suspended, SR.2 */
- if (code & BIT_PROGRAM_SUSPEND) {
- puts ("Program suspended\n");
- return ERR_PROG_ERROR;
- }
-
- /* OK, no error */
- return ERR_OK;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- ulong result, result1;
- int iflag, prot, sect;
- int rc = ERR_OK;
- ulong start;
-
-#ifdef USE_920T_MMU
- int cflag;
-#endif
-
- debug ("flash_erase: s_first %d s_last %d\n", s_first, s_last);
-
- /* first look for protection bits */
-
- if (info->flash_id == FLASH_UNKNOWN)
- return ERR_UNKNOWN_FLASH_TYPE;
-
- if ((s_first < 0) || (s_first > s_last)) {
- return ERR_INVAL;
- }
-
- if ((info->flash_id & FLASH_VENDMASK) !=
- (INTEL_MANUFACT & FLASH_VENDMASK)) {
- return ERR_UNKNOWN_FLASH_VENDOR;
- }
-
- 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. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
-#ifdef USE_920T_MMU
- cflag = dcache_status ();
- dcache_disable ();
-#endif
- iflag = disable_interrupts ();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
-
- debug ("Erasing sector %2d @ %08lX... ",
- sect, info->start[sect]);
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- if (info->protect[sect] == 0) { /* not protected */
- vu_long *addr = (vu_long *) (info->start[sect]);
- ulong bsR7, bsR7_2, bsR5, bsR5_2;
-
- /* *addr = CMD_STATUS_RESET; */
- *addr = CMD_ERASE_SETUP;
- *addr = CMD_ERASE_CONFIRM;
-
- /* wait until flash is ready */
- do {
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- *addr = CMD_STATUS_RESET;
- result = BIT_TIMEOUT;
- break;
- }
-
- *addr = CMD_STATUS_READ;
- result = *addr;
- bsR7 = result & (1 << 7);
- bsR7_2 = result & (1 << 23);
- } while (!bsR7 | !bsR7_2);
-
- *addr = CMD_STATUS_READ;
- result1 = *addr;
- bsR5 = result1 & (1 << 5);
- bsR5_2 = result1 & (1 << 21);
-#ifdef SAMSUNG_FLASH_DEBUG
- printf ("bsR5 %lx bsR5_2 %lx\n", bsR5, bsR5_2);
- if (bsR5 != 0 && bsR5_2 != 0)
- printf ("bsR5 %lx bsR5_2 %lx\n", bsR5, bsR5_2);
-#endif
-
- *addr = CMD_READ_ARRAY;
- *addr = CMD_RESUME;
-
- if ((rc = flash_error (result)) != ERR_OK)
- goto outahere;
-#if 0
- printf ("ok.\n");
- } else { /* it was protected */
-
- printf ("protected!\n");
-#endif
- }
- }
-
-outahere:
- /* allow flash to settle - wait 10 ms */
- udelay_masked (10000);
-
- if (iflag)
- enable_interrupts ();
-
-#ifdef USE_920T_MMU
- if (cflag)
- dcache_enable ();
-#endif
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash
- */
-
-static int write_word (flash_info_t * info, ulong dest, ulong data)
-{
- vu_long *addr = (vu_long *) dest;
- ulong result;
- int rc = ERR_OK;
- int iflag;
- ulong start;
-
-#ifdef USE_920T_MMU
- int cflag;
-#endif
-
- /*
- * Check if Flash is (sufficiently) erased
- */
- result = *addr;
- if ((result & data) != data)
- return ERR_NOT_ERASED;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
-#ifdef USE_920T_MMU
- cflag = dcache_status ();
- dcache_disable ();
-#endif
- iflag = disable_interrupts ();
-
- /* *addr = CMD_STATUS_RESET; */
- *addr = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- /* wait until flash is ready */
- do {
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- *addr = CMD_SUSPEND;
- result = BIT_TIMEOUT;
- break;
- }
-
- *addr = CMD_STATUS_READ;
- result = *addr;
- } while (~result & BIT_BUSY);
-
- /* *addr = CMD_READ_ARRAY; */
- *addr = CMD_STATUS_READ;
- result = *addr;
-
- rc = flash_error (result);
-
- if (iflag)
- enable_interrupts ();
-
-#ifdef USE_920T_MMU
- if (cflag)
- dcache_enable ();
-#endif
- *addr = CMD_READ_ARRAY;
- *addr = CMD_RESUME;
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash.
- */
-
-int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
-{
- ulong cp, wp, data;
- int l;
- int i, 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 << 24);
- }
- for (; i < 4 && cnt > 0; ++i) {
- data = (data >> 8) | (*src++ << 24);
- --cnt;
- ++cp;
- }
- for (; cnt == 0 && i < 4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *) cp << 24);
- }
-
- if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
- }
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- data = *((vu_long *) src);
- if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
- }
- src += 4;
- wp += 4;
- cnt -= 4;
- }
-
- if (cnt == 0) {
- return ERR_OK;
- }
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 24);
- --cnt;
- }
- for (; i < 4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *) cp << 24);
- }
-
- return write_word (info, wp, data);
-}
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