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@@ -1,540 +0,0 @@
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-/*
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- * (C) Copyright 2000-2004
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- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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- *
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- * See file CREDITS for list of people who contributed to this
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- * project.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License as
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- * published by the Free Software Foundation; either version 2 of
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- * the License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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- * MA 02111-1307 USA
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- */
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-
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-/* #define DEBUG */
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-
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-#include <common.h>
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-#include <mpc8xx.h>
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-
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-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
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-
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-/*-----------------------------------------------------------------------
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- * Functions
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- */
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-static ulong flash_get_size (vu_long *addr, flash_info_t *info);
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-static int write_word (flash_info_t *info, ulong dest, ulong data);
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-static void flash_get_offsets (ulong base, flash_info_t *info);
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-unsigned long flash_init (void)
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-{
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- volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
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- volatile memctl8xx_t *memctl = &immap->im_memctl;
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- unsigned long size_b0 ;
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- int i;
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-
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- /* Init: no FLASHes known */
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- for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
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- flash_info[i].flash_id = FLASH_UNKNOWN;
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- }
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-
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- /* Static FLASH Bank configuration here - FIXME XXX */
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-
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- debug ("\n## Get flash bank size @ 0x%08x\n", FLASH_BASE_PRELIM);
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-
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- size_b0 = flash_get_size((vu_long *)FLASH_BASE_PRELIM, &flash_info[0]);
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- if (flash_info[0].flash_id == FLASH_UNKNOWN) {
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- printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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- size_b0, size_b0<<20);
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- }
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-
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- debug ("## Before remap: BR0: 0x%08x OR0: 0x%08x\n",
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- memctl->memc_br0, memctl->memc_or0);
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-
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- /* Remap FLASH according to real size */
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- memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
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- memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;
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-
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- debug ("## BR0: 0x%08x OR0: 0x%08x\n",
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- memctl->memc_br0, memctl->memc_or0);
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-
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- /* Re-do sizing to get full correct info */
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-
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- size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
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- flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
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-
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- /* monitor protection ON by default */
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- flash_protect(FLAG_PROTECT_SET,
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- CONFIG_SYS_MONITOR_BASE,
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- CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
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- &flash_info[0]);
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-
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-#ifdef CONFIG_ENV_IS_IN_FLASH
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- /* ENV protection ON by default */
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- flash_protect(FLAG_PROTECT_SET,
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- CONFIG_ENV_ADDR,
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- CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
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- &flash_info[0]);
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-#endif
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-
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-#if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
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- debug ("Protect redundand environment: %08lx ... %08lx\n",
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- (ulong)CONFIG_ENV_ADDR_REDUND,
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- (ulong)CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1);
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-
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- flash_protect(FLAG_PROTECT_SET,
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- CONFIG_ENV_ADDR_REDUND,
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- CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
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- &flash_info[0]);
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-#endif
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-
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- flash_info[0].size = size_b0;
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-
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- debug ("## Final Flash bank size: %08lx\n", size_b0);
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-
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- return (size_b0);
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-static void flash_get_offsets (ulong base, flash_info_t *info)
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-{
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- int i;
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-
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- /* set up sector start address table */
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- if (info->flash_id & FLASH_BTYPE) {
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- /* set sector offsets for bottom boot block type */
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- info->start[0] = base + 0x00000000;
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- info->start[1] = base + 0x00010000;
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- info->start[2] = base + 0x00018000;
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- info->start[3] = base + 0x00020000;
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- for (i = 4; i < info->sector_count; i++) {
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- info->start[i] = base + ((i-3) * 0x00040000) ;
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- }
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- } else {
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- /* set sector offsets for top boot block type */
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- i = info->sector_count - 1;
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- info->start[i--] = base + info->size - 0x00010000;
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- info->start[i--] = base + info->size - 0x00018000;
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- info->start[i--] = base + info->size - 0x00020000;
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- for (; i >= 0; i--) {
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- info->start[i] = base + i * 0x00040000;
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- }
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- }
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-
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-void flash_print_info (flash_info_t *info)
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-{
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- int i;
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-
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- if (info->flash_id == FLASH_UNKNOWN) {
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- printf ("missing or unknown FLASH type\n");
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- return;
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- }
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-
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- switch (info->flash_id & FLASH_VENDMASK) {
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- case FLASH_MAN_AMD: printf ("AMD "); break;
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- case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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- default: printf ("Unknown Vendor "); break;
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- }
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-
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- switch (info->flash_id & FLASH_TYPEMASK) {
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- case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
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- break;
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- case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
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- break;
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- case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
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- break;
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- case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
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- break;
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- case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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- break;
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- case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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- break;
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- case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
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- break;
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- case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
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- break;
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- default: printf ("Unknown Chip Type\n");
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- break;
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- }
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-
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- printf (" Size: %ld MB in %d Sectors\n",
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- info->size >> 20, info->sector_count);
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-
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- printf (" Sector Start Addresses:");
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- for (i=0; i<info->sector_count; ++i) {
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- if ((i % 5) == 0)
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- printf ("\n ");
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- printf (" %08lX%s",
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- info->start[i],
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- info->protect[i] ? " (RO)" : " "
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- );
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- }
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- printf ("\n");
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- return;
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-/*
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- * The following code cannot be run from FLASH!
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- */
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-
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-static ulong flash_get_size (vu_long *addr, flash_info_t *info)
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-{
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- short i;
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- ulong value;
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- ulong base = (ulong)addr;
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-
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- /* Write auto select command: read Manufacturer ID */
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- addr[0xAAA] = 0xAAAAAAAA ;
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- addr[0x555] = 0x55555555 ;
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- addr[0xAAA] = 0x90909090 ;
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-
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- value = addr[0] ;
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-
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- debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
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-
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- switch (value & 0x00FF00FF) {
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- case AMD_MANUFACT:
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- info->flash_id = FLASH_MAN_AMD;
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- break;
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- case FUJ_MANUFACT:
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- info->flash_id = FLASH_MAN_FUJ;
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- break;
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- default:
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- info->flash_id = FLASH_UNKNOWN;
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- info->sector_count = 0;
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- info->size = 0;
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- return (0); /* no or unknown flash */
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- }
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-
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- value = addr[2] ; /* device ID */
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-
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- debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
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-
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- switch (value & 0x00FF00FF) {
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- case (AMD_ID_LV400T & 0x00FF00FF):
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- info->flash_id += FLASH_AM400T;
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- info->sector_count = 11;
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- info->size = 0x00100000;
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- break; /* => 1 MB */
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-
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- case (AMD_ID_LV400B & 0x00FF00FF):
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- info->flash_id += FLASH_AM400B;
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- info->sector_count = 11;
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- info->size = 0x00100000;
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- break; /* => 1 MB */
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-
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- case (AMD_ID_LV800T & 0x00FF00FF):
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- info->flash_id += FLASH_AM800T;
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- info->sector_count = 19;
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- info->size = 0x00200000;
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- break; /* => 2 MB */
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-
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- case (AMD_ID_LV800B & 0x00FF00FF):
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- info->flash_id += FLASH_AM800B;
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- info->sector_count = 19;
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- info->size = 0x00400000; /*%%% Size doubled by yooth */
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- break; /* => 4 MB */
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-
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- case (AMD_ID_LV160T & 0x00FF00FF):
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- info->flash_id += FLASH_AM160T;
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- info->sector_count = 35;
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- info->size = 0x00400000;
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- break; /* => 4 MB */
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-
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- case (AMD_ID_LV160B & 0x00FF00FF):
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- info->flash_id += FLASH_AM160B;
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- info->sector_count = 35;
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- info->size = 0x00800000;
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- break; /* => 8 MB */
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- case (AMD_ID_LV320T & 0x00FF00FF):
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- info->flash_id += FLASH_AM320T;
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- info->sector_count = 67;
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- info->size = 0x00800000;
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- break; /* => 8 MB */
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-
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- case (AMD_ID_LV320B & 0x00FF00FF):
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- info->flash_id += FLASH_AM320B;
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- info->sector_count = 67;
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- info->size = 0x01000000;
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- break; /* => 16 MB */
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- default:
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- info->flash_id = FLASH_UNKNOWN;
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- return (0); /* => no or unknown flash */
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-
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- }
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- /* set up sector start address table */
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- if (info->flash_id & FLASH_BTYPE) {
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- /* set sector offsets for bottom boot block type */
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- info->start[0] = base + 0x00000000;
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- info->start[1] = base + 0x00010000;
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- info->start[2] = base + 0x00018000;
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- info->start[3] = base + 0x00020000;
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- for (i = 4; i < info->sector_count; i++) {
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- info->start[i] = base + ((i-3) * 0x00040000) ;
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- }
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- } else {
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- /* set sector offsets for top boot block type */
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- i = info->sector_count - 1;
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- info->start[i--] = base + info->size - 0x00010000;
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- info->start[i--] = base + info->size - 0x00018000;
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- info->start[i--] = base + info->size - 0x00020000;
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- for (; i >= 0; i--) {
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- info->start[i] = base + i * 0x00040000;
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- }
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- }
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-
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- /* check for protected sectors */
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- for (i = 0; i < info->sector_count; i++) {
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- /* read sector protection at sector address, (A7 .. A0) = 0x02 */
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- /* D0 = 1 if protected */
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- addr = (volatile unsigned long *)(info->start[i]);
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- info->protect[i] = addr[4] & 1 ;
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- }
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-
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- /*
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- * Prevent writes to uninitialized FLASH.
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- */
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- if (info->flash_id != FLASH_UNKNOWN) {
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- addr = (volatile unsigned long *)info->start[0];
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-
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- *addr = 0xF0F0F0F0; /* reset bank */
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- }
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-
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- return (info->size);
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-}
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-
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-int flash_erase (flash_info_t *info, int s_first, int s_last)
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-{
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- vu_long *addr = (vu_long*)(info->start[0]);
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- int flag, prot, sect, l_sect;
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- ulong start, now, last;
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-
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- debug ("flash_erase: first: %d last: %d\n", s_first, s_last);
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-
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- if ((s_first < 0) || (s_first > s_last)) {
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- if (info->flash_id == FLASH_UNKNOWN) {
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- printf ("- missing\n");
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- } else {
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- printf ("- no sectors to erase\n");
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- }
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- return 1;
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- }
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-
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- if ((info->flash_id == FLASH_UNKNOWN) ||
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- (info->flash_id > FLASH_AMD_COMP)) {
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- printf ("Can't erase unknown flash type %08lx - aborted\n",
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- info->flash_id);
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- return 1;
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- }
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-
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- prot = 0;
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- for (sect=s_first; sect<=s_last; ++sect) {
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- if (info->protect[sect]) {
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- prot++;
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- }
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- }
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-
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- if (prot) {
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- printf ("- Warning: %d protected sectors will not be erased!\n",
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- prot);
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- } else {
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- printf ("\n");
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- }
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-
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- l_sect = -1;
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-
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- /* Disable interrupts which might cause a timeout here */
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- flag = disable_interrupts();
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-
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- addr[0xAAA] = 0xAAAAAAAA;
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- addr[0x555] = 0x55555555;
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- addr[0xAAA] = 0x80808080;
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- addr[0xAAA] = 0xAAAAAAAA;
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- addr[0x555] = 0x55555555;
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-
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- /* Start erase on unprotected sectors */
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- for (sect = s_first; sect<=s_last; sect++) {
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- if (info->protect[sect] == 0) { /* not protected */
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- addr = (vu_long *)(info->start[sect]) ;
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- addr[0] = 0x30303030 ;
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- l_sect = sect;
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- }
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- }
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-
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- /* re-enable interrupts if necessary */
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- if (flag)
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- enable_interrupts();
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-
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- /* 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 = (vu_long *)(info->start[l_sect]);
|
|
|
- while ((addr[0] & 0x80808080) != 0x80808080) {
|
|
|
- if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
|
- printf ("Timeout\n");
|
|
|
- return 1;
|
|
|
- }
|
|
|
- /* show that we're waiting */
|
|
|
- if ((now - last) > 1000) { /* every second */
|
|
|
- putc ('.');
|
|
|
- last = now;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-DONE:
|
|
|
- /* reset to read mode */
|
|
|
- addr = (vu_long *)info->start[0];
|
|
|
- addr[0] = 0xF0F0F0F0; /* reset bank */
|
|
|
-
|
|
|
- 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)
|
|
|
-{
|
|
|
- vu_long *addr = (vu_long *)(info->start[0]);
|
|
|
- ulong start;
|
|
|
- int flag;
|
|
|
-
|
|
|
- /* Check if Flash is (sufficiently) erased */
|
|
|
- if ((*((vu_long *)dest) & data) != data) {
|
|
|
- return (2);
|
|
|
- }
|
|
|
- /* Disable interrupts which might cause a timeout here */
|
|
|
- flag = disable_interrupts();
|
|
|
-
|
|
|
- addr[0xAAA] = 0xAAAAAAAA;
|
|
|
- addr[0x555] = 0x55555555;
|
|
|
- addr[0xAAA] = 0xA0A0A0A0;
|
|
|
-
|
|
|
- *((vu_long *)dest) = data;
|
|
|
-
|
|
|
- /* re-enable interrupts if necessary */
|
|
|
- if (flag)
|
|
|
- enable_interrupts();
|
|
|
-
|
|
|
- /* data polling for D7 */
|
|
|
- start = get_timer (0);
|
|
|
- while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) {
|
|
|
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
|
- return (1);
|
|
|
- }
|
|
|
- }
|
|
|
- return (0);
|
|
|
-}
|
|
|
-
|
|
|
-/*-----------------------------------------------------------------------
|
|
|
- */
|