summaryrefslogtreecommitdiff
path: root/board/trab/flash.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/trab/flash.c')
-rw-r--r--board/trab/flash.c569
1 files changed, 0 insertions, 569 deletions
diff --git a/board/trab/flash.c b/board/trab/flash.c
deleted file mode 100644
index 4e89c41..0000000
--- a/board/trab/flash.c
+++ /dev/null
@@ -1,569 +0,0 @@
-/*
- * (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>
-
-static ulong flash_get_size (vu_long *addr, flash_info_t *info);
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-
-#define CMD_READ_ARRAY 0x00F000F0
-#define CMD_UNLOCK1 0x00AA00AA
-#define CMD_UNLOCK2 0x00550055
-#define CMD_ERASE_SETUP 0x00800080
-#define CMD_ERASE_CONFIRM 0x00300030
-#define CMD_PROGRAM 0x00A000A0
-#define CMD_UNLOCK_BYPASS 0x00200020
-#define CMD_READ_MANF_ID 0x00900090
-#define CMD_UNLOCK_BYPASS_RES1 0x00900090
-#define CMD_UNLOCK_BYPASS_RES2 0x00000000
-
-#define MEM_FLASH_ADDR (*(volatile u32 *)CONFIG_SYS_FLASH_BASE)
-#define MEM_FLASH_ADDR1 (*(volatile u32 *)(CONFIG_SYS_FLASH_BASE + (0x00000555 << 2)))
-#define MEM_FLASH_ADDR2 (*(volatile u32 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA << 2)))
-
-#define BIT_ERASE_DONE 0x00800080
-#define BIT_RDY_MASK 0x00800080
-#define BIT_PROGRAM_ERROR 0x00200020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
-
-#define READY 1
-#define ERR 2
-#define TMO 4
-
-/*-----------------------------------------------------------------------
- */
-
-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_t *info = &flash_info[i];
-
- /* Init: no FLASHes known */
- info->flash_id = FLASH_UNKNOWN;
-
- size += flash_get_size (CONFIG_SYS_FLASH_BASE, info);
-
- if (i == 0)
- flashbase = CONFIG_SYS_FLASH_BASE;
- else
- panic ("configured too many flash banks!\n");
- for (j = 0; j < info->sector_count; j++) {
-
- info->protect[j] = 0;
- info->start[j] = flashbase;
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (FLASH_AM320B & FLASH_TYPEMASK):
- case (FLASH_MXLV320B & FLASH_TYPEMASK):
- /* Boot sector type: 8 x 8 + N x 128 kB */
- flashbase += (j < 8) ? 0x4000 : 0x20000;
- break;
- case (FLASH_AM640U & FLASH_TYPEMASK):
- /* Uniform sector type: 128 kB */
- flashbase += 0x20000;
- break;
- default:
- printf ("## Bad flash chip type 0x%04lX\n",
- info->flash_id & FLASH_TYPEMASK);
- }
- }
- }
-
- /*
- * 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 (FLASH_MAN_AMD & FLASH_VENDMASK):
- printf ("AMD "); break;
- case (FLASH_MAN_FUJ & FLASH_VENDMASK):
- printf ("FUJITSU "); break;
- case (FLASH_MAN_MX & FLASH_VENDMASK):
- printf ("MACRONIX "); break;
- default: printf ("Unknown Vendor "); break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (FLASH_AM320B & FLASH_TYPEMASK):
- printf ("2x Am29LV320DB (32Mbit)\n");
- break;
- case (FLASH_MXLV320B & FLASH_TYPEMASK):
- printf ("2x MX29LV320DB (32Mbit)\n");
- break;
- case (FLASH_AM640U & FLASH_TYPEMASK):
- printf ("2x Am29LV640D (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_erase (flash_info_t * info, int s_first, int s_last)
-{
- ulong result;
-
-#if 0
- int cflag;
-#endif
- int iflag, prot, sect;
- int rc = ERR_OK;
- int chip1, chip2;
-
- 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;
- }
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case (FLASH_MAN_AMD & FLASH_VENDMASK): break; /* OK */
- case (FLASH_MAN_FUJ & FLASH_VENDMASK): break; /* OK */
- case (FLASH_MAN_MX & FLASH_VENDMASK): break; /* OK */
- default:
- debug ("## flash_erase: unknown manufacturer\n");
- 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.
- */
-#if 0
- cflag = icache_status ();
- icache_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 */
- reset_timer_masked ();
-
- if (info->protect[sect] == 0) { /* not protected */
- vu_long *addr = (vu_long *) (info->start[sect]);
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- *addr = CMD_ERASE_CONFIRM;
-
- /* wait until flash is ready */
- chip1 = chip2 = 0;
-
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip1 = TMO;
- break;
- }
-
- if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip1 = READY;
-
- if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
- chip1 = ERR;
-
- if (!chip2 && (result >> 16) & BIT_ERASE_DONE)
- chip2 = READY;
-
- if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR)
- chip2 = ERR;
-
- } while (!chip1 || !chip2);
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (chip1 == ERR || chip2 == ERR) {
- rc = ERR_PROG_ERROR;
- printf ("Flash erase error\n");
- goto outahere;
- }
- if (chip1 == TMO) {
- rc = ERR_TIMOUT;
- printf ("Flash erase timeout error\n");
- goto outahere;
- }
- }
- }
-
-outahere:
- /* allow flash to settle - wait 10 ms */
- udelay_masked (10000);
-
- if (iflag)
- enable_interrupts ();
-
-#if 0
- if (cflag)
- icache_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;
-
-#if 0
- int cflag;
-#endif
- int iflag;
- int chip1, chip2;
-
- /*
- * 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.
- */
-#if 0
- cflag = icache_status ();
- icache_disable ();
-#endif
- iflag = disable_interrupts ();
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- /* wait until flash is ready */
- chip1 = chip2 = 0;
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
- chip1 = ERR | TMO;
- break;
- }
- if (!chip1 && ((result & 0x80) == (data & 0x80)))
- chip1 = READY;
-
- if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) {
- result = *addr;
-
- if ((result & 0x80) == (data & 0x80))
- chip1 = READY;
- else
- chip1 = ERR;
- }
-
- if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16))))
- chip2 = READY;
-
- if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR)) {
- result = *addr;
-
- if ((result & (0x80 << 16)) == (data & (0x80 << 16)))
- chip2 = READY;
- else
- chip2 = ERR;
- }
-
- } while (!chip1 || !chip2);
-
- *addr = CMD_READ_ARRAY;
-
- if (chip1 == ERR || chip2 == ERR || *addr != data) {
- rc = ERR_PROG_ERROR;
- printf ("Flash program error\n");
- debug ("chip1: %#x, chip2: %#x, addr: %#lx *addr: %#lx, "
- "data: %#lx\n",
- chip1, chip2, addr, *addr, data);
- }
-
- if (iflag)
- enable_interrupts ();
-
-#if 0
- if (cflag)
- icache_enable ();
-#endif
-
- 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) {
- goto Done;
- }
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- if (((ulong)src) & 0x3) {
- for (i = 0; i < 4; i++) {
- ((char *)&data)[i] = ((vu_char *)src)[i];
- }
- }
- else {
- data = *((vu_long *) src);
- }
-
- if ((rc = write_word (info, wp, data)) != 0) {
- goto Done;
- }
- src += 4;
- wp += 4;
- cnt -= 4;
- }
-
- if (cnt == 0) {
- rc = ERR_OK;
- goto Done;
- }
-
- /*
- * 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);
- }
-
- rc = write_word (info, wp, data);
-
- Done:
-
- return (rc);
-}
-
-/*-----------------------------------------------------------------------
- */
-
-static ulong flash_get_size (vu_long *addr, flash_info_t *info)
-{
- ulong value;
-
- /* Write auto select command sequence and read Manufacturer ID */
- addr[0x0555] = CMD_UNLOCK1;
- addr[0x02AA] = CMD_UNLOCK2;
- addr[0x0555] = CMD_READ_MANF_ID;
-
- value = addr[0];
-
- debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
-
- switch (value) {
- case AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- case FUJ_MANUFACT:
- info->flash_id = FLASH_MAN_FUJ;
- break;
- case MX_MANUFACT:
- info->flash_id = FLASH_MAN_MX;
- break;
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- addr[0] = CMD_READ_ARRAY; /* restore read mode */
- debug ("## flash_init: unknown manufacturer\n");
- return (0); /* no or unknown flash */
- }
-
- value = addr[1]; /* device ID */
-
- debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
-
- switch (value) {
- case AMD_ID_LV320B:
- info->flash_id += FLASH_AM320B;
- info->sector_count = 71;
- info->size = 0x00800000;
-
- addr[0] = CMD_READ_ARRAY; /* restore read mode */
- break; /* => 8 MB */
-
- case AMD_ID_LV640U:
- info->flash_id += FLASH_AM640U;
- info->sector_count = 128;
- info->size = 0x01000000;
-
- addr[0] = CMD_READ_ARRAY; /* restore read mode */
- break; /* => 16 MB */
-
- case MX_ID_LV320B:
- info->flash_id += FLASH_MXLV320B;
- info->sector_count = 71;
- info->size = 0x00800000;
-
- addr[0] = CMD_READ_ARRAY; /* restore read mode */
- break; /* => 8 MB */
-
- default:
- debug ("## flash_init: unknown flash chip\n");
- info->flash_id = FLASH_UNKNOWN;
- addr[0] = CMD_READ_ARRAY; /* restore read mode */
- return (0); /* => no or unknown flash */
-
- }
-
- if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
- printf ("** ERROR: sector count %d > max (%d) **\n",
- info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
- info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
- }
-
- return (info->size);
-}
generated by cgit v1.1 at 2024-11-24 22:16:53 +0000