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https://github.com/brain-hackers/u-boot-brain
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![Stefan Roese](/assets/img/avatar_default.png)
This patch moves some ppc4xx related headers from the common include directory (include/) to the powerpc specific one (arch/powerpc/include/asm/). This way to common include directory is not so cluttered with files. Signed-off-by: Stefan Roese <sr@denx.de>
941 lines
24 KiB
C
941 lines
24 KiB
C
/*
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* (C) Copyright 2001
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* Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
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* Based on code by:
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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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#include <common.h>
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#include <asm/ppc4xx.h>
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#include <asm/processor.h>
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#include <watchdog.h>
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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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* 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_word8(flash_info_t *info, ulong dest, ulong data);
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static int write_word32 (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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unsigned long flash_init (void)
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{
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int i;
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unsigned long size_b0, base_b0;
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unsigned long size_b1, base_b1;
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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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/* Get Size of Boot and Main Flashes */
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size_b0 = flash_get_size((vu_long *)FLASH_BASE0_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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return 0;
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}
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size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
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if (flash_info[1].flash_id == FLASH_UNKNOWN) {
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printf ("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n",
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size_b1, size_b1<<20);
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return 0;
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}
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/* Calculate base addresses */
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base_b0 = -size_b0;
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base_b1 = -size_b1;
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/* Setup offsets for Boot Flash */
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flash_get_offsets (base_b0, &flash_info[0]);
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/* Protect board level data */
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(void)flash_protect(FLAG_PROTECT_SET,
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base_b0,
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flash_info[0].start[1] - 1,
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&flash_info[0]);
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/* Monitor protection ON by default */
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(void)flash_protect(FLAG_PROTECT_SET,
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base_b0 + size_b0 - monitor_flash_len,
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base_b0 + size_b0 - 1,
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&flash_info[0]);
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/* Protect the FPGA image */
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(void)flash_protect(FLAG_PROTECT_SET,
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FLASH_BASE1_PRELIM,
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FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN - 1,
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&flash_info[1]);
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/* Protect the default boot image */
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(void)flash_protect(FLAG_PROTECT_SET,
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FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN,
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FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN + 0x600000 - 1,
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&flash_info[1]);
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/* Setup offsets for Main Flash */
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flash_get_offsets (FLASH_BASE1_PRELIM, &flash_info[1]);
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return (size_b0 + size_b1);
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} /* end flash_init() */
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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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/* set up sector start address table - FOR BOOT ROM ONLY!!! */
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if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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}
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} /* end flash_get_offsets() */
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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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int k;
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int size;
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int erased;
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volatile unsigned long *flash;
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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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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD: printf ("1 x AMD "); break;
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case FLASH_MAN_STM: printf ("1 x STM "); break;
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case FLASH_MAN_INTEL: printf ("2 x Intel "); break;
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default: printf ("Unknown Vendor ");
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM040:
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
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printf ("AM29LV040 (4096 Kbit, uniform sector size)\n");
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else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM)
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printf ("M29W040B (4096 Kbit, uniform block size)\n");
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else
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printf ("UNKNOWN 29x040x (4096 Kbit, uniform sector size)\n");
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break;
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case FLASH_28F320J3A:
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printf ("28F320J3A (32 Mbit = 128K x 32)\n");
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break;
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case FLASH_28F640J3A:
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printf ("28F640J3A (64 Mbit = 128K x 64)\n");
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break;
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case FLASH_28F128J3A:
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printf ("28F128J3A (128 Mbit = 128K x 128)\n");
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break;
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default:
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printf ("Unknown Chip Type\n");
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}
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) {
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printf (" Size: %ld KB in %d Blocks\n",
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info->size >> 10, info->sector_count);
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} else {
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printf (" Size: %ld KB in %d Sectors\n",
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info->size >> 10, 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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/*
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* Check if whole sector is erased
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*/
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if (i != (info->sector_count-1))
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size = info->start[i+1] - info->start[i];
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else
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size = info->start[0] + info->size - info->start[i];
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erased = 1;
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flash = (volatile unsigned long *)info->start[i];
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size = size >> 2; /* divide by 4 for longword access */
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for (k=0; k<size; k++)
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{
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if (*flash++ != 0xffffffff)
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{
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erased = 0;
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break;
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}
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}
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if ((i % 5) == 0)
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printf ("\n ");
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printf (" %08lX%s%s",
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info->start[i],
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erased ? " E" : " ",
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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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} /* end flash_print_info() */
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/*
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* The following code cannot be run from FLASH!
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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 base = (ulong)addr;
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/* Setup default type */
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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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/* Test for Boot Flash */
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if (base == FLASH_BASE0_PRELIM) {
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unsigned char value;
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volatile unsigned char * addr2 = (unsigned char *)addr;
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/* Write auto select command: read Manufacturer ID */
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*(addr2 + 0x555) = 0xaa;
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*(addr2 + 0x2aa) = 0x55;
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*(addr2 + 0x555) = 0x90;
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/* Manufacture ID */
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value = *addr2;
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switch (value) {
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case (unsigned char)AMD_MANUFACT:
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info->flash_id = FLASH_MAN_AMD;
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break;
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case (unsigned char)STM_MANUFACT:
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info->flash_id = FLASH_MAN_STM;
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break;
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default:
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*addr2 = 0xf0; /* no or unknown flash */
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return 0;
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}
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/* Device ID */
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value = *(addr2 + 1);
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switch (value) {
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case (unsigned char)AMD_ID_LV040B:
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case (unsigned char)STM_ID_29W040B:
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info->flash_id += FLASH_AM040;
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info->sector_count = 8;
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info->size = 0x00080000;
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break; /* => 512Kb */
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default:
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*addr2 = 0xf0; /* => no or unknown flash */
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return 0;
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}
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}
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else { /* MAIN Flash */
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unsigned long value;
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volatile unsigned long * addr2 = (unsigned long *)addr;
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/* Write auto select command: read Manufacturer ID */
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*addr2 = 0x90909090;
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/* Manufacture ID */
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value = *addr2;
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switch (value) {
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case (unsigned long)INTEL_MANUFACT:
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info->flash_id = FLASH_MAN_INTEL;
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break;
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default:
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*addr2 = 0xff; /* no or unknown flash */
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return 0;
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}
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/* Device ID - This shit is interleaved... */
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value = *(addr2 + 1);
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switch (value) {
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case (unsigned long)INTEL_ID_28F320J3A:
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info->flash_id += FLASH_28F320J3A;
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info->sector_count = 32;
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info->size = 0x00400000 * 2;
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break; /* => 2 X 4 MB */
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case (unsigned long)INTEL_ID_28F640J3A:
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info->flash_id += FLASH_28F640J3A;
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info->sector_count = 64;
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info->size = 0x00800000 * 2;
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break; /* => 2 X 8 MB */
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case (unsigned long)INTEL_ID_28F128J3A:
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info->flash_id += FLASH_28F128J3A;
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info->sector_count = 128;
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info->size = 0x01000000 * 2;
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break; /* => 2 X 16 MB */
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default:
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*addr2 = 0xff; /* => no or unknown flash */
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}
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}
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/* Make sure we don't exceed CONFIG_SYS_MAX_FLASH_SECT */
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if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
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printf ("** ERROR: sector count %d > max (%d) **\n",
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info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
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info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
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}
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/* set up sector start address table */
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM040:
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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break;
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case FLASH_28F320J3A:
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case FLASH_28F640J3A:
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case FLASH_28F128J3A:
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00020000 * 2); /* 2 Banks */
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break;
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}
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/* Test for Boot Flash */
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if (base == FLASH_BASE0_PRELIM) {
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volatile unsigned char *addr2;
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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, (AX .. A0) = 0x02 */
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/* D0 = 1 if protected */
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addr2 = (volatile unsigned char *)(info->start[i]);
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info->protect[i] = *(addr2 + 2) & 1;
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}
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/* Restore read mode */
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*(unsigned char *)base = 0xF0; /* Reset NORMAL Flash */
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}
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else { /* Main Flash */
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volatile unsigned long *addr2;
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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, (AX .. A0) = 0x02 */
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/* D0 = 1 if protected */
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addr2 = (volatile unsigned long *)(info->start[i]);
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info->protect[i] = *(addr2 + 2) & 0x1;
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}
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/* Restore read mode */
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*(unsigned long *)base = 0xFFFFFFFF; /* Reset Flash */
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}
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return (info->size);
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} /* end flash_get_size() */
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/*-----------------------------------------------------------------------
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*/
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static int wait_for_DQ7(ulong addr, uchar cmp_val, ulong tout)
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{
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int i;
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volatile uchar *vaddr = (uchar *)addr;
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/* Loop X times */
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for (i = 1; i <= (100 * tout); i++) { /* Wait up to tout ms */
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udelay(10);
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/* Pause 10 us */
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/* Check for completion */
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if ((vaddr[0] & 0x80) == (cmp_val & 0x80)) {
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return 0;
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}
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/* KEEP THE LUSER HAPPY - Print a dot every 1.1 seconds */
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if (!(i % 110000))
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putc('.');
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/* Kick the dog if needed */
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WATCHDOG_RESET();
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}
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return 1;
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} /* wait_for_DQ7() */
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/*-----------------------------------------------------------------------
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*/
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static int flash_erase8(flash_info_t *info, int s_first, int s_last)
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{
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int tcode, rcode = 0;
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volatile uchar *addr = (uchar *)(info->start[0]);
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volatile uchar *sector_addr;
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int flag, prot, sect;
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/* Validate arguments */
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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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return 1;
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}
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/* Check for KNOWN flash type */
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("Can't erase unknown flash type - aborted\n");
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return 1;
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}
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/* Check for protected sectors */
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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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if (prot)
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printf ("- Warning: %d protected sectors will not be erased!\n", prot);
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else
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printf ("\n");
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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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sector_addr = (uchar *)(info->start[sect]);
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM)
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printf("Erasing block %p\n", sector_addr);
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else
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printf("Erasing sector %p\n", sector_addr);
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/* Disable interrupts which might cause Flash to timeout */
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flag = disable_interrupts();
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*(addr + 0x555) = (uchar)0xAA;
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*(addr + 0x2aa) = (uchar)0x55;
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*(addr + 0x555) = (uchar)0x80;
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*(addr + 0x555) = (uchar)0xAA;
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*(addr + 0x2aa) = (uchar)0x55;
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*sector_addr = (uchar)0x30; /* sector erase */
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/*
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* Wait for each sector to complete, it's more
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* reliable. According to AMD Spec, you must
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* issue all erase commands within a specified
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* timeout. This has been seen to fail, especially
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* if printf()s are included (for debug)!!
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* Takes up to 6 seconds.
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*/
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tcode = wait_for_DQ7((ulong)sector_addr, 0x80, 6000);
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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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/* Make sure we didn't timeout */
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if (tcode) {
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printf ("Timeout\n");
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rcode = 1;
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}
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}
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}
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/* wait at least 80us - let's wait 1 ms */
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udelay (1000);
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/* reset to read mode */
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addr = (uchar *)info->start[0];
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*addr = (uchar)0xF0; /* reset bank */
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printf (" done\n");
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return rcode;
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} /* end flash_erase8() */
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static int flash_erase32(flash_info_t *info, int s_first, int s_last)
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{
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int flag, sect;
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ulong start, now, last;
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int prot = 0;
|
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/* Validate arguments */
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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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return 1;
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}
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/* Check for KNOWN flash type */
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if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
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printf ("Can erase only Intel flash types - aborted\n");
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return 1;
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}
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|
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/* Check for protected sectors */
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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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if (prot)
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printf ("- Warning: %d protected sectors will not be erased!\n", prot);
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else
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printf ("\n");
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start = get_timer (0);
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last = start;
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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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WATCHDOG_RESET();
|
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if (info->protect[sect] == 0) { /* not protected */
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vu_long *addr = (vu_long *)(info->start[sect]);
|
|
unsigned long status;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
*addr = 0x00500050; /* clear status register */
|
|
*addr = 0x00200020; /* erase setup */
|
|
*addr = 0x00D000D0; /* erase confirm */
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* Wait at least 80us - let's wait 1 ms */
|
|
udelay (1000);
|
|
|
|
while (((status = *addr) & 0x00800080) != 0x00800080) {
|
|
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout\n");
|
|
*addr = 0x00B000B0; /* suspend erase */
|
|
*addr = 0x00FF00FF; /* reset to read mode */
|
|
return 1;
|
|
}
|
|
|
|
/* show that we're waiting */
|
|
if ((now - last) > 990) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
*addr = 0x00FF00FF; /* reset to read mode */
|
|
}
|
|
}
|
|
printf (" done\n");
|
|
return 0;
|
|
} /* end flash_erase32() */
|
|
|
|
int flash_erase(flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040)
|
|
return flash_erase8(info, s_first, s_last);
|
|
else
|
|
return flash_erase32(info, s_first, s_last);
|
|
} /* end flash_erase() */
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_buff8(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
ulong cp, wp, data;
|
|
ulong start;
|
|
int i, l, rc;
|
|
|
|
start = get_timer (0);
|
|
|
|
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_word8(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_word8(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
cnt -= 4;
|
|
if (get_timer(start) > 1000) { /* every second */
|
|
WATCHDOG_RESET();
|
|
putc ('.');
|
|
start = get_timer(0);
|
|
}
|
|
}
|
|
|
|
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_word8(info, wp, data));
|
|
} /* end write_buff8() */
|
|
|
|
#define FLASH_WIDTH 4 /* flash bus width in bytes */
|
|
static int write_buff32 (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
ulong cp, wp, data;
|
|
int i, l, rc;
|
|
ulong start;
|
|
|
|
start = get_timer (0);
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
return 4;
|
|
}
|
|
|
|
wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH 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<FLASH_WIDTH && cnt>0; ++i) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
if ((rc = write_word32(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += FLASH_WIDTH;
|
|
}
|
|
|
|
/*
|
|
* handle FLASH_WIDTH aligned part
|
|
*/
|
|
while (cnt >= FLASH_WIDTH) {
|
|
data = 0;
|
|
for (i=0; i<FLASH_WIDTH; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word32(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += FLASH_WIDTH;
|
|
cnt -= FLASH_WIDTH;
|
|
if (get_timer(start) > 990) { /* every second */
|
|
putc ('.');
|
|
start = get_timer(0);
|
|
}
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i=0, cp=wp; i<FLASH_WIDTH && cnt>0; ++i, ++cp) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
}
|
|
for (; i<FLASH_WIDTH; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
return (write_word32(info, wp, data));
|
|
} /* write_buff32() */
|
|
|
|
int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
int retval;
|
|
|
|
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040)
|
|
retval = write_buff8(info, src, addr, cnt);
|
|
else
|
|
retval = write_buff32(info, src, addr, cnt);
|
|
|
|
return retval;
|
|
} /* end write_buff() */
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
|
|
static int write_word8(flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
volatile uchar *addr2 = (uchar *)(info->start[0]);
|
|
volatile uchar *dest2 = (uchar *)dest;
|
|
volatile uchar *data2 = (uchar *)&data;
|
|
int flag;
|
|
int i, tcode, rcode = 0;
|
|
|
|
/* Check if Flash is (sufficently) erased */
|
|
if ((*((volatile uchar *)dest) &
|
|
(uchar)data) != (uchar)data) {
|
|
return (2);
|
|
}
|
|
|
|
for (i=0; i < (4 / sizeof(uchar)); i++) {
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
*(addr2 + 0x555) = (uchar)0xAA;
|
|
*(addr2 + 0x2aa) = (uchar)0x55;
|
|
*(addr2 + 0x555) = (uchar)0xA0;
|
|
|
|
dest2[i] = data2[i];
|
|
|
|
/* Wait for write to complete, up to 1ms */
|
|
tcode = wait_for_DQ7((ulong)&dest2[i], data2[i], 1);
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* Make sure we didn't timeout */
|
|
if (tcode) {
|
|
rcode = 1;
|
|
}
|
|
}
|
|
|
|
return rcode;
|
|
} /* end write_word8() */
|
|
|
|
static int write_word32(flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
vu_long *addr = (vu_long *)dest;
|
|
ulong status;
|
|
ulong start;
|
|
int flag;
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((*addr & data) != data) {
|
|
return (2);
|
|
}
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
*addr = 0x00400040; /* write setup */
|
|
*addr = data;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
start = get_timer (0);
|
|
|
|
while (((status = *addr) & 0x00800080) != 0x00800080) {
|
|
WATCHDOG_RESET();
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
*addr = 0x00FF00FF; /* restore read mode */
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
*addr = 0x00FF00FF; /* restore read mode */
|
|
|
|
return (0);
|
|
} /* end write_word32() */
|
|
|
|
|
|
static int _flash_protect(flash_info_t *info, long sector)
|
|
{
|
|
int i;
|
|
int flag;
|
|
ulong status;
|
|
int rcode = 0;
|
|
volatile long *addr = (long *)sector;
|
|
|
|
switch(info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_28F320J3A:
|
|
case FLASH_28F640J3A:
|
|
case FLASH_28F128J3A:
|
|
/* Disable interrupts which might cause Flash to timeout */
|
|
flag = disable_interrupts();
|
|
|
|
/* Issue command */
|
|
*addr = 0x00500050L; /* Clear the status register */
|
|
*addr = 0x00600060L; /* Set lock bit setup */
|
|
*addr = 0x00010001L; /* Set lock bit confirm */
|
|
|
|
/* Wait for command completion */
|
|
for (i = 0; i < 10; i++) { /* 75us timeout, wait 100us */
|
|
udelay(10);
|
|
if ((*addr & 0x00800080L) == 0x00800080L)
|
|
break;
|
|
}
|
|
|
|
/* Not successful? */
|
|
status = *addr;
|
|
if (status != 0x00800080L) {
|
|
printf("Protect %x sector failed: %x\n",
|
|
(uint)sector, (uint)status);
|
|
rcode = 1;
|
|
}
|
|
|
|
/* Restore read mode */
|
|
*addr = 0x00ff00ffL;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
break;
|
|
case FLASH_AM040: /* No soft sector protection */
|
|
break;
|
|
}
|
|
|
|
/* Turn protection on for this sector */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
if (info->start[i] == sector) {
|
|
info->protect[i] = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rcode;
|
|
} /* end _flash_protect() */
|
|
|
|
static int _flash_unprotect(flash_info_t *info, long sector)
|
|
{
|
|
int i;
|
|
int flag;
|
|
ulong status;
|
|
int rcode = 0;
|
|
volatile long *addr = (long *)sector;
|
|
|
|
switch(info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_28F320J3A:
|
|
case FLASH_28F640J3A:
|
|
case FLASH_28F128J3A:
|
|
/* Disable interrupts which might cause Flash to timeout */
|
|
flag = disable_interrupts();
|
|
|
|
*addr = 0x00500050L; /* Clear the status register */
|
|
*addr = 0x00600060L; /* Clear lock bit setup */
|
|
*addr = 0x00D000D0L; /* Clear lock bit confirm */
|
|
|
|
/* Wait for command completion */
|
|
for (i = 0; i < 80 ; i++) { /* 700ms timeout, wait 800 */
|
|
udelay(10000); /* Delay 10ms */
|
|
if ((*addr & 0x00800080L) == 0x00800080L)
|
|
break;
|
|
}
|
|
|
|
/* Not successful? */
|
|
status = *addr;
|
|
if (status != 0x00800080L) {
|
|
printf("Un-protect %x sector failed: %x\n",
|
|
(uint)sector, (uint)status);
|
|
*addr = 0x00ff00ffL;
|
|
rcode = 1;
|
|
}
|
|
|
|
/* restore read mode */
|
|
*addr = 0x00ff00ffL;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
break;
|
|
case FLASH_AM040: /* No soft sector protection */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Fix Intel's little red wagon. Reprotect
|
|
* sectors that were protected before we undid
|
|
* protection on a specific sector.
|
|
*/
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
if (info->start[i] != sector) {
|
|
if (info->protect[i]) {
|
|
if (_flash_protect(info, info->start[i]))
|
|
rcode = 1;
|
|
}
|
|
}
|
|
else /* Turn protection off for this sector */
|
|
info->protect[i] = 0;
|
|
}
|
|
|
|
return rcode;
|
|
} /* end _flash_unprotect() */
|
|
|
|
|
|
int flash_real_protect(flash_info_t *info, long sector, int prot)
|
|
{
|
|
int rcode;
|
|
|
|
if (prot)
|
|
rcode = _flash_protect(info, info->start[sector]);
|
|
else
|
|
rcode = _flash_unprotect(info, info->start[sector]);
|
|
|
|
return rcode;
|
|
} /* end flash_real_protect() */
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|