+++ /dev/null
-/*
- * (C) Copyright 2001
- * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
- *
- * (C) Copyright 2002
- * Wolfgang Denk, DENX Software Engineering, wd@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 <config.h>
-#include <common.h>
-#include <flash.h>
-#include <asm/io.h>
-
-/*---------------------------------------------------------------------*/
-#undef DEBUG_FLASH
-
-#ifdef DEBUG_FLASH
-#define DEBUGF(fmt,args...) printf(fmt ,##args)
-#else
-#define DEBUGF(fmt,args...)
-#endif
-/*---------------------------------------------------------------------*/
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-static ulong flash_get_size (ulong addr, flash_info_t *info);
-static int flash_get_offsets (ulong base, flash_info_t *info);
-static int write_word (flash_info_t *info, ulong dest, ulong data);
-static void flash_reset (ulong addr);
-
-unsigned long flash_init (void)
-{
- unsigned int i;
- unsigned long flash_size = 0;
-
- /* Init: no FLASHes known */
- for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- flash_info[i].sector_count = 0;
- flash_info[i].size = 0;
- }
-
- DEBUGF("\n## Get flash size @ 0x%08x\n", CONFIG_SYS_FLASH_BASE);
-
- flash_size = flash_get_size (CONFIG_SYS_FLASH_BASE, flash_info);
-
- DEBUGF("## Flash bank size: %08lx\n", flash_size);
-
- if (flash_size) {
-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE && \
- CONFIG_SYS_MONITOR_BASE < CONFIG_SYS_FLASH_BASE + CONFIG_SYS_FLASH_MAX_SIZE
- /* monitor protection ON by default */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
- &flash_info[0]);
-#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_SECT_SIZE - 1,
- &flash_info[0]);
-#endif
-
- } else {
- puts ("Warning: the BOOT Flash is not initialised !");
- }
-
- return flash_size;
-}
-
-/*
- * The following code cannot be run from FLASH!
- */
-static ulong flash_get_size (ulong addr, flash_info_t *info)
-{
- short i;
- uchar value;
-
- /* Write auto select command: read Manufacturer ID */
- out8(addr + 0x0555, 0xAA);
- iobarrier_rw();
- out8(addr + 0x02AA, 0x55);
- iobarrier_rw();
- out8(addr + 0x0555, 0x90);
- iobarrier_rw();
-
- value = in8(addr);
- iobarrier_rw();
-
- DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (ulong)addr, value);
-
- switch (value | (value << 16)) {
- case AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
-
- case FUJ_MANUFACT:
- info->flash_id = FLASH_MAN_FUJ;
- break;
-
- case STM_MANUFACT:
- info->flash_id = FLASH_MAN_STM;
- break;
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- flash_reset (addr);
- return 0;
- }
-
- value = in8(addr + 1); /* device ID */
- iobarrier_rw();
-
- DEBUGF("Device ID @ 0x%08lx: 0x%08x\n", addr+1, value);
-
- switch ((ulong)value) {
- case AMD_ID_F040B:
- DEBUGF("Am29F040B\n");
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x00080000;
- break; /* => 512 kB */
-
- case AMD_ID_LV040B:
- DEBUGF("Am29LV040B\n");
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x00080000;
- break; /* => 512 kB */
-
- case AMD_ID_LV400T:
- DEBUGF("Am29LV400T\n");
- info->flash_id += FLASH_AM400T;
- info->sector_count = 11;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case AMD_ID_LV400B:
- DEBUGF("Am29LV400B\n");
- info->flash_id += FLASH_AM400B;
- info->sector_count = 11;
- info->size = 0x00100000;
- break; /* => 1 MB */
-
- case AMD_ID_LV800T:
- DEBUGF("Am29LV800T\n");
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case AMD_ID_LV800B:
- DEBUGF("Am29LV400B\n");
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00200000;
- break; /* => 2 MB */
-
- case AMD_ID_LV160T:
- DEBUGF("Am29LV160T\n");
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00400000;
- break; /* => 4 MB */
-
- case AMD_ID_LV160B:
- DEBUGF("Am29LV160B\n");
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00400000;
- break; /* => 4 MB */
-
- case AMD_ID_LV320T:
- DEBUGF("Am29LV320T\n");
- info->flash_id += FLASH_AM320T;
- info->sector_count = 67;
- info->size = 0x00800000;
- break; /* => 8 MB */
-
-#if 0
- /* Has the same ID as AMD_ID_LV320T, to be fixed */
- case AMD_ID_LV320B:
- DEBUGF("Am29LV320B\n");
- info->flash_id += FLASH_AM320B;
- info->sector_count = 67;
- info->size = 0x00800000;
- break; /* => 8 MB */
-#endif
-
- case AMD_ID_LV033C:
- DEBUGF("Am29LV033C\n");
- info->flash_id += FLASH_AM033C;
- info->sector_count = 64;
- info->size = 0x01000000;
- break; /* => 16Mb */
-
- case STM_ID_F040B:
- DEBUGF("M29F040B\n");
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x00080000;
- break; /* => 512 kB */
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- flash_reset (addr);
- 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;
- }
-
- if (! flash_get_offsets (addr, info)) {
- flash_reset (addr);
- return 0;
- }
-
- /* check for protected sectors */
- for (i = 0; i < info->sector_count; i++) {
- /* read sector protection at sector address, (A7 .. A0) = 0x02 */
- /* D0 = 1 if protected */
- value = in8(info->start[i] + 2);
- iobarrier_rw();
- info->protect[i] = (value & 1) != 0;
- }
-
- /*
- * Reset bank to read mode
- */
- flash_reset (addr);
-
- return (info->size);
-}
-
-static int flash_get_offsets (ulong base, flash_info_t *info)
-{
- unsigned int i;
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM040:
- /* set sector offsets for uniform sector type */
- for (i = 0; i < info->sector_count; i++) {
- info->start[i] = base + i * info->size /
- info->sector_count;
- }
- break;
- default:
- return 0;
- }
-
- return 1;
-}
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- volatile ulong addr = info->start[0];
- int flag, prot, sect, l_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_UNKNOWN) {
- 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");
- }
-
- l_sect = -1;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- out8(addr + 0x555, 0xAA);
- iobarrier_rw();
- out8(addr + 0x2AA, 0x55);
- iobarrier_rw();
- out8(addr + 0x555, 0x80);
- iobarrier_rw();
- out8(addr + 0x555, 0xAA);
- iobarrier_rw();
- out8(addr + 0x2AA, 0x55);
- iobarrier_rw();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- addr = info->start[sect];
- out8(addr, 0x30);
- iobarrier_rw();
- l_sect = sect;
- }
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* 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 = start;
- addr = info->start[l_sect];
-
- DEBUGF ("Start erase timeout: %d\n", CONFIG_SYS_FLASH_ERASE_TOUT);
-
- while ((in8(addr) & 0x80) != 0x80) {
- if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- flash_reset (info->start[0]);
- return 1;
- }
- /* show that we're waiting */
- if ((now - last) > 1000) { /* every second */
- putc ('.');
- last = now;
- }
- iobarrier_rw();
- }
-
-DONE:
- /* reset to read mode */
- flash_reset (info->start[0]);
-
- 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 cp, wp, data;
- int i, l, 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);
- }
- 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);
- }
-
- return (write_word(info, wp, data));
-}
-
-/*
- * 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)
-{
- volatile ulong addr = info->start[0];
- ulong start;
- int i;
-
- /* Check if Flash is (sufficiently) erased */
- if ((in32(dest) & data) != data) {
- return (2);
- }
-
- /* write each byte out */
- for (i = 0; i < 4; i++) {
- char *data_ch = (char *)&data;
- int flag = disable_interrupts();
-
- out8(addr + 0x555, 0xAA);
- iobarrier_rw();
- out8(addr + 0x2AA, 0x55);
- iobarrier_rw();
- out8(addr + 0x555, 0xA0);
- iobarrier_rw();
- out8(dest+i, data_ch[i]);
- iobarrier_rw();
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* data polling for D7 */
- start = get_timer (0);
- while ((in8(dest+i) & 0x80) != (data_ch[i] & 0x80)) {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- flash_reset (addr);
- return (1);
- }
- iobarrier_rw();
- }
- }
-
- flash_reset (addr);
- return (0);
-}
-
-/*
- * Reset bank to read mode
- */
-static void flash_reset (ulong addr)
-{
- out8(addr, 0xF0); /* reset bank */
- iobarrier_rw();
-}
-
-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_FUJ: printf ("FUJITSU "); break;
- case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break;
- case FLASH_MAN_STM: printf ("SGS THOMSON "); break;
- default: printf ("Unknown Vendor "); break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM040: printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
- break;
- case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
- break;
- case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
- break;
- case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
- break;
- case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
- break;
- default: printf ("Unknown Chip Type\n");
- break;
- }
-
- if (info->size % 0x100000 == 0) {
- printf (" Size: %ld MB in %d Sectors\n",
- info->size / 0x100000, info->sector_count);
- } else if (info->size % 0x400 == 0) {
- printf (" Size: %ld KB in %d Sectors\n",
- info->size / 0x400, info->sector_count);
- } else {
- printf (" Size: %ld B in %d Sectors\n",
- info->size, 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");
-}
projects / karo-tx-uboot.git / blobdiff