mirror of
https://github.com/AsahiLinux/u-boot
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830 lines
20 KiB
C
830 lines
20 KiB
C
/*
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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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#if 0
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#define DEBUG
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#endif
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#include <common.h>
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#include <mpc8xx.h>
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#include <environment.h>
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#include <asm/processor.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
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&& !defined(CONFIG_TQM885D)
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# ifndef CFG_OR_TIMING_FLASH_AT_50MHZ
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# define CFG_OR_TIMING_FLASH_AT_50MHZ (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
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OR_SCY_2_CLK | OR_EHTR | OR_BI)
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# endif
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#endif /* CONFIG_TQM8xxL/M, !TQM866M, !TQM885D */
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#ifndef CFG_ENV_ADDR
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#define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
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#endif
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flash_info_t flash_info[CFG_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_word (flash_info_t *info, ulong dest, ulong data);
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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 *)CFG_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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unsigned long size_b0, size_b1;
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int i;
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#ifdef CFG_OR_TIMING_FLASH_AT_50MHZ
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int scy, trlx, flash_or_timing, clk_diff;
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scy = (CFG_OR_TIMING_FLASH_AT_50MHZ & OR_SCY_MSK) >> 4;
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if (CFG_OR_TIMING_FLASH_AT_50MHZ & OR_TRLX) {
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trlx = OR_TRLX;
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scy *= 2;
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} else
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trlx = 0;
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/* We assume that each 10MHz of bus clock require 1-clk SCY
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* adjustment.
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*/
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clk_diff = (gd->bus_clk / 1000000) - 50;
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/* We need proper rounding here. This is what the "+5" and "-5"
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* are here for.
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*/
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if (clk_diff >= 0)
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scy += (clk_diff + 5) / 10;
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else
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scy += (clk_diff - 5) / 10;
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/* For bus frequencies above 50MHz, we want to use relaxed timing
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* (OR_TRLX).
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*/
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if (gd->bus_clk >= 50000000)
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trlx = OR_TRLX;
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else
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trlx = 0;
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if (trlx)
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scy /= 2;
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if (scy > 0xf)
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scy = 0xf;
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if (scy < 1)
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scy = 1;
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flash_or_timing = (scy << 4) | trlx |
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(CFG_OR_TIMING_FLASH_AT_50MHZ & ~(OR_TRLX | OR_SCY_MSK));
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#endif
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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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debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);
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size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
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debug ("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);
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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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debug ("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
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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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debug ("## Before remap: "
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"BR0: 0x%08x OR0: 0x%08x "
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"BR1: 0x%08x OR1: 0x%08x\n",
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memctl->memc_br0, memctl->memc_or0,
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memctl->memc_br1, memctl->memc_or1);
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/* Remap FLASH according to real size */
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#ifndef CFG_OR_TIMING_FLASH_AT_50MHZ
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memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);
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#else
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memctl->memc_or0 = flash_or_timing | (-size_b0 & OR_AM_MSK);
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#endif
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memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;
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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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/* Re-do sizing to get full correct info */
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size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
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#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
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/* monitor protection ON by default */
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debug ("Protect monitor: %08lx ... %08lx\n",
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(ulong)CFG_MONITOR_BASE,
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(ulong)CFG_MONITOR_BASE + monitor_flash_len - 1);
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flash_protect(FLAG_PROTECT_SET,
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CFG_MONITOR_BASE,
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CFG_MONITOR_BASE + monitor_flash_len - 1,
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&flash_info[0]);
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#endif
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#ifdef CFG_ENV_IS_IN_FLASH
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/* ENV protection ON by default */
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# ifdef CFG_ENV_ADDR_REDUND
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debug ("Protect primary environment: %08lx ... %08lx\n",
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(ulong)CFG_ENV_ADDR,
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(ulong)CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1);
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# else
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debug ("Protect environment: %08lx ... %08lx\n",
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(ulong)CFG_ENV_ADDR,
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(ulong)CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1);
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# endif
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flash_protect(FLAG_PROTECT_SET,
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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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#endif
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#ifdef CFG_ENV_ADDR_REDUND
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debug ("Protect redundand environment: %08lx ... %08lx\n",
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(ulong)CFG_ENV_ADDR_REDUND,
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(ulong)CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1);
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flash_protect(FLAG_PROTECT_SET,
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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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if (size_b1) {
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#ifndef CFG_OR_TIMING_FLASH_AT_50MHZ
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memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);
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#else
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memctl->memc_or1 = flash_or_timing | (-size_b1 & 0xFFFF8000);
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#endif
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memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
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BR_MS_GPCM | BR_V;
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debug ("## BR1: 0x%08x OR1: 0x%08x\n",
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memctl->memc_br1, memctl->memc_or1);
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/* Re-do sizing to get full correct info */
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size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),
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&flash_info[1]);
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#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
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/* monitor protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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CFG_MONITOR_BASE,
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CFG_MONITOR_BASE+monitor_flash_len-1,
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&flash_info[1]);
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#endif
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#ifdef CFG_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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CFG_ENV_ADDR,
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CFG_ENV_ADDR+CFG_ENV_SIZE-1,
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&flash_info[1]);
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#endif
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} else {
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memctl->memc_br1 = 0; /* invalidate bank */
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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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flash_info[1].size = 0;
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debug ("## DISABLE BR1: 0x%08x OR1: 0x%08x\n",
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memctl->memc_br1, memctl->memc_or1);
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}
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debug ("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
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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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/*-----------------------------------------------------------------------
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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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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 ("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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switch (info->flash_id & FLASH_TYPEMASK) {
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#ifdef CONFIG_TQM8xxM /* mirror bit flash */
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case FLASH_AMLV128U: printf ("AM29LV128ML (128Mbit, uniform sector size)\n");
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break;
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case FLASH_AMLV320U: printf ("AM29LV320ML (32Mbit, uniform sector size)\n");
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break;
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case FLASH_AMLV640U: printf ("AM29LV640ML (64Mbit, uniform sector size)\n");
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break;
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case FLASH_AMLV320B: printf ("AM29LV320MB (32Mbit, bottom boot sect)\n");
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break;
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# else /* ! TQM8xxM */
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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_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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#endif /* TQM8xxM */
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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_AMDL163B: printf ("AM29DL163B (16 Mbit, bottom boot sect)\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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printf (" Size: %ld MB in %d Sectors\n",
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info->size >> 20, info->sector_count);
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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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* 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 value;
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ulong base = (ulong)addr;
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/* Write auto select command: read Manufacturer ID */
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addr[0x0555] = 0x00AA00AA;
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addr[0x02AA] = 0x00550055;
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addr[0x0555] = 0x00900090;
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value = addr[0];
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debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
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switch (value) {
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case AMD_MANUFACT:
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debug ("Manufacturer: AMD\n");
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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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debug ("Manufacturer: FUJITSU\n");
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info->flash_id = FLASH_MAN_FUJ;
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break;
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default:
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debug ("Manufacturer: *** unknown ***\n");
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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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value = addr[1]; /* device ID */
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debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
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switch (value) {
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#ifdef CONFIG_TQM8xxM /* mirror bit flash */
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case AMD_ID_MIRROR:
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debug ("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n",
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addr[14], addr[15]);
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/* Special case for AMLV320MH/L */
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if ((addr[14] & 0x00ff00ff) == 0x001d001d &&
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(addr[15] & 0x00ff00ff) == 0x00000000) {
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debug ("Chip: AMLV320MH/L\n");
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info->flash_id += FLASH_AMLV320U;
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info->sector_count = 64;
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info->size = 0x00800000; /* => 8 MB */
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break;
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}
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switch(addr[14]) {
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case AMD_ID_LV128U_2:
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if (addr[15] != AMD_ID_LV128U_3) {
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debug ("Chip: AMLV128U -> unknown\n");
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info->flash_id = FLASH_UNKNOWN;
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} else {
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debug ("Chip: AMLV128U\n");
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info->flash_id += FLASH_AMLV128U;
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info->sector_count = 256;
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info->size = 0x02000000;
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}
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break; /* => 32 MB */
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case AMD_ID_LV640U_2:
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if (addr[15] != AMD_ID_LV640U_3) {
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debug ("Chip: AMLV640U -> unknown\n");
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info->flash_id = FLASH_UNKNOWN;
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} else {
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debug ("Chip: AMLV640U\n");
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info->flash_id += FLASH_AMLV640U;
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info->sector_count = 128;
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info->size = 0x01000000;
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}
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break; /* => 16 MB */
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case AMD_ID_LV320B_2:
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if (addr[15] != AMD_ID_LV320B_3) {
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debug ("Chip: AMLV320B -> unknown\n");
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info->flash_id = FLASH_UNKNOWN;
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} else {
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debug ("Chip: AMLV320B\n");
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info->flash_id += FLASH_AMLV320B;
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info->sector_count = 71;
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info->size = 0x00800000;
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}
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break; /* => 8 MB */
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default:
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debug ("Chip: *** unknown ***\n");
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info->flash_id = FLASH_UNKNOWN;
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break;
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}
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break;
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# else /* ! TQM8xxM */
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case AMD_ID_LV400T:
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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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case AMD_ID_LV400B:
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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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case AMD_ID_LV800T:
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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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case AMD_ID_LV800B:
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info->flash_id += FLASH_AM800B;
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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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case AMD_ID_LV320T:
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info->flash_id += FLASH_AM320T;
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info->sector_count = 71;
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info->size = 0x00800000;
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break; /* => 8 MB */
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case AMD_ID_LV320B:
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info->flash_id += FLASH_AM320B;
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info->sector_count = 71;
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info->size = 0x00800000;
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break; /* => 8 MB */
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#endif /* TQM8xxM */
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case AMD_ID_LV160T:
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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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case AMD_ID_LV160B:
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info->flash_id += FLASH_AM160B;
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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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case AMD_ID_DL163B:
|
|
info->flash_id += FLASH_AMDL163B;
|
|
info->sector_count = 39;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
return (0); /* => no or unknown flash */
|
|
}
|
|
|
|
/* set up sector start address table */
|
|
switch (value) {
|
|
#ifdef CONFIG_TQM8xxM /* mirror bit flash */
|
|
case AMD_ID_MIRROR:
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
/* only known types here - no default */
|
|
case FLASH_AMLV128U:
|
|
case FLASH_AMLV640U:
|
|
case FLASH_AMLV320U:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
base += 0x20000;
|
|
}
|
|
break;
|
|
case FLASH_AMLV320B:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
/*
|
|
* The first 8 sectors are 8 kB,
|
|
* all the other ones are 64 kB
|
|
*/
|
|
base += (i < 8)
|
|
? 2 * ( 8 << 10)
|
|
: 2 * (64 << 10);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
# else /* ! TQM8xxM */
|
|
case AMD_ID_LV400B:
|
|
case AMD_ID_LV800B:
|
|
/* set sector offsets for bottom boot block type */
|
|
info->start[0] = base + 0x00000000;
|
|
info->start[1] = base + 0x00008000;
|
|
info->start[2] = base + 0x0000C000;
|
|
info->start[3] = base + 0x00010000;
|
|
for (i = 4; i < info->sector_count; i++) {
|
|
info->start[i] = base + (i * 0x00020000) - 0x00060000;
|
|
}
|
|
break;
|
|
case AMD_ID_LV400T:
|
|
case AMD_ID_LV800T:
|
|
/* set sector offsets for top boot block type */
|
|
i = info->sector_count - 1;
|
|
info->start[i--] = base + info->size - 0x00008000;
|
|
info->start[i--] = base + info->size - 0x0000C000;
|
|
info->start[i--] = base + info->size - 0x00010000;
|
|
for (; i >= 0; i--) {
|
|
info->start[i] = base + i * 0x00020000;
|
|
}
|
|
break;
|
|
case AMD_ID_LV320B:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
/*
|
|
* The first 8 sectors are 8 kB,
|
|
* all the other ones are 64 kB
|
|
*/
|
|
base += (i < 8)
|
|
? 2 * ( 8 << 10)
|
|
: 2 * (64 << 10);
|
|
}
|
|
break;
|
|
case AMD_ID_LV320T:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
/*
|
|
* The last 8 sectors are 8 kB,
|
|
* all the other ones are 64 kB
|
|
*/
|
|
base += (i < (info->sector_count - 8))
|
|
? 2 * (64 << 10)
|
|
: 2 * ( 8 << 10);
|
|
}
|
|
break;
|
|
#endif /* TQM8xxM */
|
|
case AMD_ID_LV160B:
|
|
/* set sector offsets for bottom boot block type */
|
|
info->start[0] = base + 0x00000000;
|
|
info->start[1] = base + 0x00008000;
|
|
info->start[2] = base + 0x0000C000;
|
|
info->start[3] = base + 0x00010000;
|
|
for (i = 4; i < info->sector_count; i++) {
|
|
info->start[i] = base + (i * 0x00020000) - 0x00060000;
|
|
}
|
|
break;
|
|
case AMD_ID_LV160T:
|
|
/* set sector offsets for top boot block type */
|
|
i = info->sector_count - 1;
|
|
info->start[i--] = base + info->size - 0x00008000;
|
|
info->start[i--] = base + info->size - 0x0000C000;
|
|
info->start[i--] = base + info->size - 0x00010000;
|
|
for (; i >= 0; i--) {
|
|
info->start[i] = base + i * 0x00020000;
|
|
}
|
|
break;
|
|
case AMD_ID_DL163B:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
/*
|
|
* The first 8 sectors are 8 kB,
|
|
* all the other ones are 64 kB
|
|
*/
|
|
base += (i < 8)
|
|
? 2 * ( 8 << 10)
|
|
: 2 * (64 << 10);
|
|
}
|
|
break;
|
|
default:
|
|
return (0);
|
|
break;
|
|
}
|
|
|
|
#if 0
|
|
/* check for protected sectors */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
|
/* D0 = 1 if protected */
|
|
addr = (volatile unsigned long *)(info->start[i]);
|
|
info->protect[i] = addr[2] & 1;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Prevent writes to uninitialized FLASH.
|
|
*/
|
|
if (info->flash_id != FLASH_UNKNOWN) {
|
|
addr = (volatile unsigned long *)info->start[0];
|
|
|
|
*addr = 0x00F000F0; /* reset bank */
|
|
}
|
|
|
|
return (info->size);
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
vu_long *addr = (vu_long*)(info->start[0]);
|
|
int flag, prot, sect, l_sect;
|
|
ulong start, now, last;
|
|
|
|
debug ("flash_erase: first: %d last: %d\n", s_first, s_last);
|
|
|
|
if ((s_first < 0) || (s_first > s_last)) {
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("- missing\n");
|
|
} else {
|
|
printf ("- no sectors to erase\n");
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
if ((info->flash_id == FLASH_UNKNOWN) ||
|
|
(info->flash_id > FLASH_AMD_COMP)) {
|
|
printf ("Can't erase unknown flash type %08lx - aborted\n",
|
|
info->flash_id);
|
|
return 1;
|
|
}
|
|
|
|
prot = 0;
|
|
for (sect=s_first; sect<=s_last; ++sect) {
|
|
if (info->protect[sect]) {
|
|
prot++;
|
|
}
|
|
}
|
|
|
|
if (prot) {
|
|
printf ("- Warning: %d protected sectors will not be erased!\n",
|
|
prot);
|
|
} else {
|
|
printf ("\n");
|
|
}
|
|
|
|
l_sect = -1;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
addr[0x0555] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
addr[0x0555] = 0x00800080;
|
|
addr[0x0555] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect<=s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
addr = (vu_long*)(info->start[sect]);
|
|
addr[0] = 0x00300030;
|
|
l_sect = sect;
|
|
}
|
|
}
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* 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] & 0x00800080) != 0x00800080) {
|
|
if ((now = get_timer(start)) > CFG_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 = (volatile unsigned long *)info->start[0];
|
|
addr[0] = 0x00F000F0; /* 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[0x0555] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
addr[0x0555] = 0x00A000A0;
|
|
|
|
*((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) & 0x00800080) != (data & 0x00800080)) {
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|