+++ /dev/null
-/*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Alex Zuepke <azu@sysgo.de>
- *
- * (C) Copyright 2005
- * 2N Telekomunikace, a.s. <www.2n.cz>
- * Ladislav Michl <michl@2n.cz>
- *
- * 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>
-
-/*#if 0 */
-#if (PHYS_SDRAM_1_SIZE != SZ_32M)
-
-#include "crcek.h"
-
-#if (CONFIG_SYS_MAX_FLASH_BANKS > 1)
-#error There is always only _one_ flash chip
-#endif
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-#define CMD_READ_ARRAY 0x000000f0
-#define CMD_UNLOCK1 0x000000aa
-#define CMD_UNLOCK2 0x00000055
-#define CMD_ERASE_SETUP 0x00000080
-#define CMD_ERASE_CONFIRM 0x00000030
-#define CMD_PROGRAM 0x000000a0
-#define CMD_UNLOCK_BYPASS 0x00000020
-
-#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00000555 << 1)))
-#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x000002aa << 1)))
-
-#define BIT_ERASE_DONE 0x00000080
-#define BIT_RDY_MASK 0x00000080
-#define BIT_PROGRAM_ERROR 0x00000020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
-
-/*-----------------------------------------------------------------------
- */
-
-ulong flash_init(void)
-{
- int i;
-
- flash_info[0].flash_id = (AMD_MANUFACT & FLASH_VENDMASK) |
- (AMD_ID_LV800B & FLASH_TYPEMASK);
- flash_info[0].size = PHYS_FLASH_1_SIZE;
- flash_info[0].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
- memset(flash_info[0].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
-
- for (i = 0; i < flash_info[0].sector_count; i++) {
- switch (i) {
- case 0: /* 16kB */
- flash_info[0].start[0] = CONFIG_SYS_FLASH_BASE;
- break;
- case 1: /* 8kB */
- flash_info[0].start[1] = CONFIG_SYS_FLASH_BASE + 0x4000;
- break;
- case 2: /* 8kB */
- flash_info[0].start[2] = CONFIG_SYS_FLASH_BASE + 0x4000 +
- 0x2000;
- break;
- case 3: /* 32 KB */
- flash_info[0].start[3] = CONFIG_SYS_FLASH_BASE + 0x4000 +
- 2 * 0x2000;
- break;
- case 4:
- flash_info[0].start[4] = CONFIG_SYS_FLASH_BASE + 0x4000 +
- 2 * 0x2000 + 0x8000;
- break;
- default: /* 64kB */
- flash_info[0].start[i] = flash_info[0].start[i-1] +
- 0x10000;
- break;
- }
- }
-
- /* U-Boot */
- flash_protect(FLAG_PROTECT_SET,
- LOADER1_OFFSET,
- LOADER1_OFFSET + LOADER_SIZE - 1, flash_info);
- /* Protect crcek, env and r_env as well */
- flash_protect(FLAG_PROTECT_SET, 0, 0x8000 - 1, flash_info);
-
- return flash_info[0].size;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info(flash_info_t *info)
-{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case (AMD_MANUFACT & FLASH_VENDMASK):
- puts("AMD: ");
- break;
- default:
- puts("Unknown vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (AMD_ID_LV800B & FLASH_TYPEMASK):
- puts("AM29LV800BB (8Mb)\n");
- break;
- default:
- puts("Unknown chip type\n");
- return;
- }
-
- printf(" Size: %ld MB in %d sectors\n",
- info->size >> 20, info->sector_count);
-
- puts(" Sector start addresses:");
- for (i = 0; i < info->sector_count; i++) {
- if ((i % 5) == 0)
- puts("\n ");
-
- printf(" %08lX%s", info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
- puts("\n");
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase(flash_info_t *info, int s_first, int s_last)
-{
- ushort result;
- int prot, sect;
- int rc = ERR_OK;
-
- /* 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) !=
- (AMD_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
- putc('\n');
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- vu_short *addr = (vu_short *) (info->start[sect]);
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
-
- 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 */
- while (1) {
- result = *addr;
-
- /* check timeout */
- if (get_timer_masked() > CONFIG_SYS_FLASH_ERASE_TOUT) {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- rc = ERR_TIMOUT;
- break;
- }
-
- if ((result & 0xfff) & BIT_ERASE_DONE)
- break;
-
- if ((result & 0xffff) & BIT_PROGRAM_ERROR) {
- rc = ERR_PROG_ERROR;
- break;
- }
- }
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (rc != ERR_OK)
- goto out;
-
- putc('.');
- }
- }
-out:
- /* allow flash to settle - wait 10 ms */
- udelay_masked(10000);
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash
- */
-
-static int write_hword(flash_info_t *info, ulong dest, ushort data)
-{
- vu_short *addr = (vu_short *) dest;
- ushort result;
- int rc = ERR_OK;
-
- /* check if flash is (sufficiently) erased */
- result = *addr;
- if ((result & data) != data)
- return ERR_NOT_ERASED;
-
- 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 */
- while (1) {
- result = *addr;
-
- /* check timeout */
- if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
- rc = ERR_TIMOUT;
- break;
- }
-
- if ((result & 0x80) == (data & 0x80))
- break;
-
- if ((result & 0xffff) & BIT_PROGRAM_ERROR) {
- result = *addr;
-
- if ((result & 0x80) != (data & 0x80))
- rc = ERR_PROG_ERROR;
- }
- }
-
- *addr = CMD_READ_ARRAY;
-
- if (*addr != data)
- rc = ERR_PROG_ERROR;
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash.
- */
-
-int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- ulong cp, wp;
- int l;
- int i, rc;
- ushort data;
-
- wp = (addr & ~1); /* 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 << 8);
- for (; i < 2 && cnt > 0; ++i) {
- data = (data >> 8) | (*src++ << 8);
- --cnt;
- ++cp;
- }
- for (; cnt == 0 && i < 2; ++i, ++cp)
- data = (data >> 8) | (*(uchar *) cp << 8);
-
- if ((rc = write_hword(info, wp, data)) != 0)
- return (rc);
- wp += 2;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 2) {
- data = *((vu_short *) src);
- if ((rc = write_hword(info, wp, data)) != 0)
- return (rc);
- src += 2;
- wp += 2;
- cnt -= 2;
- }
-
- if (cnt == 0)
- return ERR_OK;
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 8);
- --cnt;
- }
- for (; i < 2; ++i, ++cp)
- data = (data >> 8) | (*(uchar *) cp << 8);
-
- return write_hword(info, wp, data);
-}
-
-#endif
projects / u-boot / commitdiff