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https://github.com/brain-hackers/u-boot-brain
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c4e932ce73
Analysis of the flash drivers shows that they all use 0x20 if the erase size is 4KiB, or 0xd8 if it's larger. So with this info in hand, we can unify all the erase functionality in one place. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
142 lines
3.3 KiB
C
142 lines
3.3 KiB
C
/*
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* Copyright (C) 2009 Freescale Semiconductor, Inc.
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*
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* Author: Mingkai Hu (Mingkai.hu@freescale.com)
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* Based on stmicro.c by Wolfgang Denk (wd@denx.de),
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* TsiChung Liew (Tsi-Chung.Liew@freescale.com),
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* and Jason McMullan (mcmullan@netapp.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 <malloc.h>
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#include <spi_flash.h>
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#include "spi_flash_internal.h"
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struct spansion_spi_flash_params {
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u16 idcode1;
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u16 idcode2;
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u16 pages_per_sector;
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u16 nr_sectors;
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const char *name;
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};
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static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
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{
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.idcode1 = 0x0213,
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.idcode2 = 0,
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.pages_per_sector = 256,
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.nr_sectors = 16,
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.name = "S25FL008A",
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},
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{
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.idcode1 = 0x0214,
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.idcode2 = 0,
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.pages_per_sector = 256,
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.nr_sectors = 32,
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.name = "S25FL016A",
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},
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{
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.idcode1 = 0x0215,
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.idcode2 = 0,
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.pages_per_sector = 256,
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.nr_sectors = 64,
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.name = "S25FL032A",
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},
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{
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.idcode1 = 0x0216,
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.idcode2 = 0,
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.pages_per_sector = 256,
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.nr_sectors = 128,
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.name = "S25FL064A",
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},
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{
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.idcode1 = 0x2018,
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.idcode2 = 0x0301,
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.pages_per_sector = 256,
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.nr_sectors = 256,
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.name = "S25FL128P_64K",
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},
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{
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.idcode1 = 0x2018,
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.idcode2 = 0x0300,
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.pages_per_sector = 1024,
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.nr_sectors = 64,
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.name = "S25FL128P_256K",
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},
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{
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.idcode1 = 0x0215,
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.idcode2 = 0x4d00,
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.pages_per_sector = 256,
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.nr_sectors = 64,
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.name = "S25FL032P",
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},
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{
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.idcode1 = 0x2018,
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.idcode2 = 0x4d01,
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.pages_per_sector = 256,
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.nr_sectors = 256,
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.name = "S25FL129P_64K",
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},
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};
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struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
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{
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const struct spansion_spi_flash_params *params;
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struct spi_flash *flash;
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unsigned int i;
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unsigned short jedec, ext_jedec;
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jedec = idcode[1] << 8 | idcode[2];
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ext_jedec = idcode[3] << 8 | idcode[4];
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for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) {
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params = &spansion_spi_flash_table[i];
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if (params->idcode1 == jedec) {
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if (params->idcode2 == ext_jedec)
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break;
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}
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}
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if (i == ARRAY_SIZE(spansion_spi_flash_table)) {
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debug("SF: Unsupported SPANSION ID %04x %04x\n", jedec, ext_jedec);
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return NULL;
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}
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flash = malloc(sizeof(*flash));
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if (!flash) {
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debug("SF: Failed to allocate memory\n");
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return NULL;
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}
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flash->spi = spi;
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flash->name = params->name;
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flash->write = spi_flash_cmd_write_multi;
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flash->erase = spi_flash_cmd_erase;
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flash->read = spi_flash_cmd_read_fast;
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flash->page_size = 256;
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flash->sector_size = 256 * params->pages_per_sector;
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flash->size = flash->sector_size * params->nr_sectors;
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return flash;
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}
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