114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
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/*
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* (C) Copyright 2001
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* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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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 <ppc4xx.h>
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#include <asm/processor.h>
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/*
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* include common flash code (for esd boards)
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*/
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#include "../common/flash.c"
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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 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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unsigned long size_b0, size_b1;
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int i;
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/* Init: no FLASHes known */
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for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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}
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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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}
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size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
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if (size_b1 > size_b0) {
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printf ("## ERROR: "
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"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
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size_b1, size_b1<<20,
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size_b0, size_b0<<20
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);
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flash_info[0].flash_id = FLASH_UNKNOWN;
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flash_info[1].flash_id = FLASH_UNKNOWN;
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flash_info[0].sector_count = -1;
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flash_info[1].sector_count = -1;
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flash_info[0].size = 0;
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flash_info[1].size = 0;
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return (0);
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}
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/* Re-do sizing to get full correct info */
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size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
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flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
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/* monitor protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
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FLASH_BASE0_PRELIM+size_b0-1,
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&flash_info[0]);
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if (size_b1) {
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/* Re-do sizing to get full correct info */
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size_b1 = flash_get_size((vu_long *)(FLASH_BASE0_PRELIM + size_b0),
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&flash_info[1]);
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flash_get_offsets (FLASH_BASE0_PRELIM + size_b0, &flash_info[1]);
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/* monitor protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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FLASH_BASE0_PRELIM+size_b0+size_b1-monitor_flash_len,
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FLASH_BASE0_PRELIM+size_b0+size_b1-1,
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&flash_info[1]);
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/* monitor protection OFF by default (one is enough) */
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flash_protect(FLAG_PROTECT_CLEAR,
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FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
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FLASH_BASE0_PRELIM+size_b0-1,
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&flash_info[0]);
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} else {
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flash_info[1].flash_id = FLASH_UNKNOWN;
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flash_info[1].sector_count = -1;
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}
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flash_info[0].size = size_b0;
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flash_info[1].size = size_b1;
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return (size_b0 + size_b1);
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}
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