mirror of
https://github.com/brain-hackers/u-boot-brain
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205 lines
5.8 KiB
C
205 lines
5.8 KiB
C
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/*
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* (C) Copyright 2000
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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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* Modified 4/5/2001
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* Wait for completion of each sector erase command issued
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* 4/5/2001
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* Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
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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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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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#undef DEBUG
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#ifdef DEBUG
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#define DEBUGF(x...) printf(x)
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#else
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#define DEBUGF(x...)
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#endif /* DEBUG */
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/*
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* include common flash code (for amcc 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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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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uint pbcr;
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unsigned long base_b0, base_b1;
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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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/* Static FLASH Bank configuration here - FIXME XXX */
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size_b0 =
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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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/* Only one bank */
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if (CFG_MAX_FLASH_BANKS == 1) {
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/* Setup offsets */
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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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(void)flash_protect(FLAG_PROTECT_SET,
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CFG_MONITOR_BASE,
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CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
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&flash_info[0]);
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#ifdef CFG_ENV_IS_IN_FLASH
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(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
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CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
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&flash_info[0]);
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(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
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CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
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&flash_info[0]);
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#endif
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size_b1 = 0;
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flash_info[0].size = size_b0;
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}
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/* 2 banks */
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else {
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size_b1 =
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flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
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&flash_info[1]);
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/* Re-do sizing to get full correct info */
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if (size_b1) {
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mtdcr(ebccfga, pb0cr);
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pbcr = mfdcr(ebccfgd);
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mtdcr(ebccfga, pb0cr);
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base_b1 = -size_b1;
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pbcr = (pbcr & 0x0001ffff) | base_b1 |
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(((size_b1 / 1024 / 1024) - 1) << 17);
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mtdcr(ebccfgd, pbcr);
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/* printf("pb1cr = %x\n", pbcr); */
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}
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if (size_b0) {
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mtdcr(ebccfga, pb1cr);
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pbcr = mfdcr(ebccfgd);
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mtdcr(ebccfga, pb1cr);
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base_b0 = base_b1 - size_b0;
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pbcr = (pbcr & 0x0001ffff) | base_b0 |
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(((size_b0 / 1024 / 1024) - 1) << 17);
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mtdcr(ebccfgd, pbcr);
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/* printf("pb0cr = %x\n", pbcr); */
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}
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size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]);
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flash_get_offsets(base_b0, &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 - CFG_MONITOR_LEN,
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base_b0 + size_b0 - 1, &flash_info[0]);
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/* Also protect sector containing initial power-up instruction */
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/* (flash_protect() checks address range - other call ignored) */
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(void)flash_protect(FLAG_PROTECT_SET,
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0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]);
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(void)flash_protect(FLAG_PROTECT_SET,
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0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]);
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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 =
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flash_get_size((vu_long *) base_b1, &flash_info[1]);
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flash_get_offsets(base_b1, &flash_info[1]);
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/* monitor protection ON by default */
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(void)flash_protect(FLAG_PROTECT_SET,
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base_b1 + size_b1 - CFG_MONITOR_LEN,
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base_b1 + 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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(void)flash_protect(FLAG_PROTECT_CLEAR,
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base_b0 + size_b0 - CFG_MONITOR_LEN,
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base_b0 + 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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} /* else 2 banks */
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return (size_b0 + size_b1);
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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 */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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(info->flash_id == 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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} else {
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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 + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] =
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base + (i * 0x00010000) - 0x00030000;
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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 - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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}
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}
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