Wolfgang Denk
16 years ago
commit
ca41ef301b
@ -0,0 +1,350 @@ |
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/*
|
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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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/* S25FLxx-specific commands */ |
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#define CMD_S25FLXX_READ 0x03 /* Read Data Bytes */ |
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#define CMD_S25FLXX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ |
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#define CMD_S25FLXX_READID 0x90 /* Read Manufacture ID and Device ID */ |
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#define CMD_S25FLXX_WREN 0x06 /* Write Enable */ |
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#define CMD_S25FLXX_WRDI 0x04 /* Write Disable */ |
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#define CMD_S25FLXX_RDSR 0x05 /* Read Status Register */ |
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#define CMD_S25FLXX_WRSR 0x01 /* Write Status Register */ |
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#define CMD_S25FLXX_PP 0x02 /* Page Program */ |
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#define CMD_S25FLXX_SE 0xd8 /* Sector Erase */ |
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#define CMD_S25FLXX_BE 0xc7 /* Bulk Erase */ |
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#define CMD_S25FLXX_DP 0xb9 /* Deep Power-down */ |
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#define CMD_S25FLXX_RES 0xab /* Release from DP, and Read Signature */ |
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#define SPSN_ID_S25FL008A 0x0213 |
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#define SPSN_ID_S25FL016A 0x0214 |
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#define SPSN_ID_S25FL032A 0x0215 |
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#define SPSN_ID_S25FL064A 0x0216 |
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#define SPSN_ID_S25FL128P 0x2018 |
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#define SPSN_EXT_ID_S25FL128P_256KB 0x0300 |
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#define SPSN_EXT_ID_S25FL128P_64KB 0x0301 |
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#define SPANSION_SR_WIP (1 << 0) /* Write-in-Progress */ |
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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 page_size; |
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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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struct spansion_spi_flash { |
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struct spi_flash flash; |
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const struct spansion_spi_flash_params *params; |
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}; |
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static inline struct spansion_spi_flash *to_spansion_spi_flash(struct spi_flash |
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*flash) |
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{ |
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return container_of(flash, struct spansion_spi_flash, flash); |
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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 = SPSN_ID_S25FL008A, |
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.idcode2 = 0, |
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.page_size = 256, |
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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 = SPSN_ID_S25FL016A, |
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.idcode2 = 0, |
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.page_size = 256, |
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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 = SPSN_ID_S25FL032A, |
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.idcode2 = 0, |
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.page_size = 256, |
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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 = SPSN_ID_S25FL064A, |
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.idcode2 = 0, |
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.page_size = 256, |
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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 = SPSN_ID_S25FL128P, |
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.idcode2 = SPSN_EXT_ID_S25FL128P_64KB, |
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.page_size = 256, |
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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 = SPSN_ID_S25FL128P, |
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.idcode2 = SPSN_EXT_ID_S25FL128P_256KB, |
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.page_size = 256, |
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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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static int spansion_wait_ready(struct spi_flash *flash, unsigned long timeout) |
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{ |
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struct spi_slave *spi = flash->spi; |
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unsigned long timebase; |
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int ret; |
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u8 status; |
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timebase = get_timer(0); |
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do { |
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ret = spi_flash_cmd(spi, CMD_S25FLXX_RDSR, &status, sizeof(status)); |
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if (ret) |
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return -1; |
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if ((status & SPANSION_SR_WIP) == 0) |
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break; |
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} while (get_timer(timebase) < timeout); |
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if ((status & SPANSION_SR_WIP) == 0) |
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return 0; |
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/* Timed out */ |
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return -1; |
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} |
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static int spansion_read_fast(struct spi_flash *flash, |
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u32 offset, size_t len, void *buf) |
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{ |
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struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash); |
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unsigned long page_addr; |
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unsigned long page_size; |
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u8 cmd[5]; |
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page_size = spsn->params->page_size; |
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page_addr = offset / page_size; |
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cmd[0] = CMD_READ_ARRAY_FAST; |
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cmd[1] = page_addr >> 8; |
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cmd[2] = page_addr; |
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cmd[3] = offset % page_size; |
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cmd[4] = 0x00; |
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debug |
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("READ: 0x%x => cmd = { 0x%02x 0x%02x%02x%02x%02x } len = 0x%x\n", |
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offset, cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], len); |
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return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); |
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} |
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static int spansion_write(struct spi_flash *flash, |
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u32 offset, size_t len, const void *buf) |
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{ |
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struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash); |
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unsigned long page_addr; |
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unsigned long byte_addr; |
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unsigned long page_size; |
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size_t chunk_len; |
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size_t actual; |
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int ret; |
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u8 cmd[4]; |
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page_size = spsn->params->page_size; |
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page_addr = offset / page_size; |
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byte_addr = offset % page_size; |
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ret = spi_claim_bus(flash->spi); |
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if (ret) { |
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debug("SF: Unable to claim SPI bus\n"); |
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return ret; |
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} |
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ret = 0; |
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for (actual = 0; actual < len; actual += chunk_len) { |
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chunk_len = min(len - actual, page_size - byte_addr); |
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cmd[0] = CMD_S25FLXX_PP; |
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cmd[1] = page_addr >> 8; |
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cmd[2] = page_addr; |
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cmd[3] = byte_addr; |
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debug |
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("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n", |
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buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); |
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ret = spi_flash_cmd(flash->spi, CMD_S25FLXX_WREN, NULL, 0); |
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if (ret < 0) { |
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debug("SF: Enabling Write failed\n"); |
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break; |
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} |
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ret = spi_flash_cmd_write(flash->spi, cmd, 4, |
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buf + actual, chunk_len); |
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if (ret < 0) { |
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debug("SF: SPANSION Page Program failed\n"); |
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break; |
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} |
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ret = spansion_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
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if (ret < 0) { |
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debug("SF: SPANSION page programming timed out\n"); |
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break; |
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} |
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page_addr++; |
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byte_addr = 0; |
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} |
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debug("SF: SPANSION: Successfully programmed %u bytes @ 0x%x\n", |
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len, offset); |
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spi_release_bus(flash->spi); |
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return ret; |
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} |
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int spansion_erase(struct spi_flash *flash, u32 offset, size_t len) |
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{ |
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struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash); |
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unsigned long sector_size; |
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size_t actual; |
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int ret; |
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u8 cmd[4]; |
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/*
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* This function currently uses sector erase only. |
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* probably speed things up by using bulk erase |
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* when possible. |
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*/ |
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sector_size = spsn->params->page_size * spsn->params->pages_per_sector; |
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if (offset % sector_size || len % sector_size) { |
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debug("SF: Erase offset/length not multiple of sector size\n"); |
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return -1; |
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} |
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len /= sector_size; |
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cmd[0] = CMD_S25FLXX_SE; |
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cmd[2] = 0x00; |
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cmd[3] = 0x00; |
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ret = spi_claim_bus(flash->spi); |
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if (ret) { |
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debug("SF: Unable to claim SPI bus\n"); |
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return ret; |
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} |
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ret = 0; |
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for (actual = 0; actual < len; actual++) { |
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cmd[1] = (offset / sector_size) + actual; |
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ret = spi_flash_cmd(flash->spi, CMD_S25FLXX_WREN, NULL, 0); |
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if (ret < 0) { |
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debug("SF: Enabling Write failed\n"); |
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break; |
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} |
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ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); |
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if (ret < 0) { |
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debug("SF: SPANSION page erase failed\n"); |
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break; |
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} |
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/* Up to 2 seconds */ |
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ret = spansion_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); |
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if (ret < 0) { |
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debug("SF: SPANSION page erase timed out\n"); |
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break; |
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} |
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} |
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debug("SF: SPANSION: Successfully erased %u bytes @ 0x%x\n", |
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len * sector_size, offset); |
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spi_release_bus(flash->spi); |
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return ret; |
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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 spansion_spi_flash *spsn; |
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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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spsn = malloc(sizeof(struct spansion_spi_flash)); |
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if (!spsn) { |
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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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spsn->params = params; |
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spsn->flash.spi = spi; |
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spsn->flash.name = params->name; |
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spsn->flash.write = spansion_write; |
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spsn->flash.erase = spansion_erase; |
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spsn->flash.read = spansion_read_fast; |
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spsn->flash.size = params->page_size * params->pages_per_sector |
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* params->nr_sectors; |
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debug("SF: Detected %s with page size %u, total %u bytes\n", |
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params->name, params->page_size, spsn->flash.size); |
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return &spsn->flash; |
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} |
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@ -0,0 +1,358 @@ |
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/*
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* Driver for SST serial flashes |
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* |
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* (C) Copyright 2000-2002 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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* Copyright 2008, Network Appliance Inc. |
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* Jason McMullan <mcmullan@netapp.com> |
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* Copyright (C) 2004-2007 Freescale Semiconductor, Inc. |
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* TsiChung Liew (Tsi-Chung.Liew@freescale.com) |
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* Copyright (c) 2008-2009 Analog Devices Inc. |
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* |
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* Licensed under the GPL-2 or later. |
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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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#define CMD_SST_WREN 0x06 /* Write Enable */ |
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#define CMD_SST_WRDI 0x04 /* Write Disable */ |
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#define CMD_SST_RDSR 0x05 /* Read Status Register */ |
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#define CMD_SST_WRSR 0x01 /* Write Status Register */ |
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#define CMD_SST_READ 0x03 /* Read Data Bytes */ |
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#define CMD_SST_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ |
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#define CMD_SST_BP 0x02 /* Byte Program */ |
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#define CMD_SST_AAI_WP 0xAD /* Auto Address Increment Word Program */ |
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#define CMD_SST_SE 0x20 /* Sector Erase */ |
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#define SST_SR_WIP (1 << 0) /* Write-in-Progress */ |
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#define SST_SR_WEL (1 << 1) /* Write enable */ |
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#define SST_SR_BP0 (1 << 2) /* Block Protection 0 */ |
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#define SST_SR_BP1 (1 << 3) /* Block Protection 1 */ |
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#define SST_SR_BP2 (1 << 4) /* Block Protection 2 */ |
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#define SST_SR_AAI (1 << 6) /* Addressing mode */ |
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#define SST_SR_BPL (1 << 7) /* BP bits lock */ |
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struct sst_spi_flash_params { |
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u8 idcode1; |
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u16 nr_sectors; |
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const char *name; |
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}; |
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struct sst_spi_flash { |
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struct spi_flash flash; |
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const struct sst_spi_flash_params *params; |
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}; |
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static inline struct sst_spi_flash *to_sst_spi_flash(struct spi_flash *flash) |
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{ |
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return container_of(flash, struct sst_spi_flash, flash); |
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} |
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#define SST_SECTOR_SIZE (4 * 1024) |
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static const struct sst_spi_flash_params sst_spi_flash_table[] = { |
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{ |
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.idcode1 = 0x01, |
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.nr_sectors = 128, |
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.name = "SST25WF512", |
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},{ |
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.idcode1 = 0x02, |
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.nr_sectors = 256, |
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.name = "SST25WF010", |
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},{ |
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.idcode1 = 0x03, |
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.nr_sectors = 512, |
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.name = "SST25WF020", |
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},{ |
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.idcode1 = 0x04, |
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.nr_sectors = 1024, |
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.name = "SST25WF040", |
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}, |
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}; |
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|
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static int |
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sst_wait_ready(struct spi_flash *flash, unsigned long timeout) |
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{ |
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struct spi_slave *spi = flash->spi; |
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unsigned long timebase; |
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int ret; |
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u8 byte = CMD_SST_RDSR; |
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ret = spi_xfer(spi, sizeof(byte) * 8, &byte, NULL, SPI_XFER_BEGIN); |
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if (ret) { |
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debug("SF: Failed to send command %02x: %d\n", byte, ret); |
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return ret; |
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} |
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timebase = get_timer(0); |
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do { |
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ret = spi_xfer(spi, sizeof(byte) * 8, NULL, &byte, 0); |
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if (ret) |
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break; |
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if ((byte & SST_SR_WIP) == 0) |
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break; |
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} while (get_timer(timebase) < timeout); |
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|
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spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); |
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|
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if (!ret && (byte & SST_SR_WIP) != 0) |
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ret = -1; |
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|
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if (ret) |
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debug("SF: sst wait for ready timed out\n"); |
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return ret; |
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} |
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|
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static int |
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sst_enable_writing(struct spi_flash *flash) |
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{ |
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int ret = spi_flash_cmd(flash->spi, CMD_SST_WREN, NULL, 0); |
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if (ret) |
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debug("SF: Enabling Write failed\n"); |
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return ret; |
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} |
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|
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static int |
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sst_disable_writing(struct spi_flash *flash) |
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{ |
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int ret = spi_flash_cmd(flash->spi, CMD_SST_WRDI, NULL, 0); |
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if (ret) |
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debug("SF: Disabling Write failed\n"); |
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return ret; |
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} |
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|
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static int |
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sst_read_fast(struct spi_flash *flash, u32 offset, size_t len, void *buf) |
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{ |
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u8 cmd[5] = { |
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CMD_READ_ARRAY_FAST, |
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offset >> 16, |
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offset >> 8, |
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offset, |
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0x00, |
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}; |
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return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); |
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} |
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|
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static int |
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sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf) |
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{ |
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int ret; |
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u8 cmd[4] = { |
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CMD_SST_BP, |
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offset >> 16, |
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offset >> 8, |
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offset, |
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}; |
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|
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debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n", |
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spi_w8r8(flash->spi, CMD_SST_RDSR), buf, cmd[0], offset); |
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|
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ret = sst_enable_writing(flash); |
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if (ret) |
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return ret; |
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|
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ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf, 1); |
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if (ret) |
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return ret; |
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|
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return sst_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
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} |
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|
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static int |
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sst_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) |
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{ |
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size_t actual, cmd_len; |
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int ret; |
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u8 cmd[4]; |
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|
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ret = spi_claim_bus(flash->spi); |
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if (ret) { |
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debug("SF: Unable to claim SPI bus\n"); |
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return ret; |
||||
} |
||||
|
||||
/* If the data is not word aligned, write out leading single byte */ |
||||
actual = offset % 2; |
||||
if (actual) { |
||||
ret = sst_byte_write(flash, offset, buf); |
||||
if (ret) |
||||
goto done; |
||||
} |
||||
offset += actual; |
||||
|
||||
ret = sst_enable_writing(flash); |
||||
if (ret) |
||||
goto done; |
||||
|
||||
cmd_len = 4; |
||||
cmd[0] = CMD_SST_AAI_WP; |
||||
cmd[1] = offset >> 16; |
||||
cmd[2] = offset >> 8; |
||||
cmd[3] = offset; |
||||
|
||||
for (; actual < len - 1; actual += 2) { |
||||
debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n", |
||||
spi_w8r8(flash->spi, CMD_SST_RDSR), buf + actual, cmd[0], |
||||
offset); |
||||
|
||||
ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len, |
||||
buf + actual, 2); |
||||
if (ret) { |
||||
debug("SF: sst word program failed\n"); |
||||
break; |
||||
} |
||||
|
||||
ret = sst_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
||||
if (ret) |
||||
break; |
||||
|
||||
cmd_len = 1; |
||||
offset += 2; |
||||
} |
||||
|
||||
if (!ret) |
||||
ret = sst_disable_writing(flash); |
||||
|
||||
/* If there is a single trailing byte, write it out */ |
||||
if (!ret && actual != len) |
||||
ret = sst_byte_write(flash, offset, buf + actual); |
||||
|
||||
done: |
||||
debug("SF: sst: program %s %zu bytes @ 0x%zx\n", |
||||
ret ? "failure" : "success", len, offset - actual); |
||||
|
||||
spi_release_bus(flash->spi); |
||||
return ret; |
||||
} |
||||
|
||||
int |
||||
sst_erase(struct spi_flash *flash, u32 offset, size_t len) |
||||
{ |
||||
unsigned long sector_size; |
||||
u32 start, end; |
||||
int ret; |
||||
u8 cmd[4]; |
||||
|
||||
/*
|
||||
* This function currently uses sector erase only. |
||||
* Probably speed things up by using bulk erase |
||||
* when possible. |
||||
*/ |
||||
|
||||
sector_size = SST_SECTOR_SIZE; |
||||
|
||||
if (offset % sector_size) { |
||||
debug("SF: Erase offset not multiple of sector size\n"); |
||||
return -1; |
||||
} |
||||
|
||||
ret = spi_claim_bus(flash->spi); |
||||
if (ret) { |
||||
debug("SF: Unable to claim SPI bus\n"); |
||||
return ret; |
||||
} |
||||
|
||||
cmd[0] = CMD_SST_SE; |
||||
cmd[3] = 0; |
||||
start = offset; |
||||
end = start + len; |
||||
|
||||
ret = 0; |
||||
while (offset < end) { |
||||
cmd[1] = offset >> 16; |
||||
cmd[2] = offset >> 8; |
||||
offset += sector_size; |
||||
|
||||
debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], |
||||
cmd[2], cmd[3], offset); |
||||
|
||||
ret = sst_enable_writing(flash); |
||||
if (ret) |
||||
break; |
||||
|
||||
ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), NULL, 0); |
||||
if (ret) { |
||||
debug("SF: sst page erase failed\n"); |
||||
break; |
||||
} |
||||
|
||||
ret = sst_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); |
||||
if (ret) |
||||
break; |
||||
} |
||||
|
||||
debug("SF: sst: Successfully erased %lu bytes @ 0x%x\n", |
||||
len * sector_size, start); |
||||
|
||||
spi_release_bus(flash->spi); |
||||
return ret; |
||||
} |
||||
|
||||
static int |
||||
sst_unlock(struct spi_flash *flash) |
||||
{ |
||||
int ret; |
||||
u8 cmd, status; |
||||
|
||||
ret = sst_enable_writing(flash); |
||||
if (ret) |
||||
return ret; |
||||
|
||||
cmd = CMD_SST_WRSR; |
||||
status = 0; |
||||
ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &status, 1); |
||||
if (ret) |
||||
debug("SF: Unable to set status byte\n"); |
||||
|
||||
debug("SF: sst: status = %x\n", spi_w8r8(flash->spi, CMD_SST_RDSR)); |
||||
|
||||
return ret; |
||||
} |
||||
|
||||
struct spi_flash * |
||||
spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode) |
||||
{ |
||||
const struct sst_spi_flash_params *params; |
||||
struct sst_spi_flash *stm; |
||||
size_t i; |
||||
|
||||
for (i = 0; i < ARRAY_SIZE(sst_spi_flash_table); ++i) { |
||||
params = &sst_spi_flash_table[i]; |
||||
if (params->idcode1 == idcode[2]) |
||||
break; |
||||
} |
||||
|
||||
if (i == ARRAY_SIZE(sst_spi_flash_table)) { |
||||
debug("SF: Unsupported SST ID %02x\n", idcode[1]); |
||||
return NULL; |
||||
} |
||||
|
||||
stm = malloc(sizeof(*stm)); |
||||
if (!stm) { |
||||
debug("SF: Failed to allocate memory\n"); |
||||
return NULL; |
||||
} |
||||
|
||||
stm->params = params; |
||||
stm->flash.spi = spi; |
||||
stm->flash.name = params->name; |
||||
|
||||
stm->flash.write = sst_write; |
||||
stm->flash.erase = sst_erase; |
||||
stm->flash.read = sst_read_fast; |
||||
stm->flash.size = SST_SECTOR_SIZE * params->nr_sectors; |
||||
|
||||
debug("SF: Detected %s with page size %u, total %u bytes\n", |
||||
params->name, SST_SECTOR_SIZE, stm->flash.size); |
||||
|
||||
/* Flash powers up read-only, so clear BP# bits */ |
||||
sst_unlock(&stm->flash); |
||||
|
||||
return &stm->flash; |
||||
} |
||||
Loading…
Reference in new issue