| /* |
| * Copyright (C) 2009 Freescale Semiconductor, Inc. |
| * |
| * Author: Mingkai Hu (Mingkai.hu@freescale.com) |
| * Based on stmicro.c by Wolfgang Denk (wd@denx.de), |
| * TsiChung Liew (Tsi-Chung.Liew@freescale.com), |
| * and Jason McMullan (mcmullan@netapp.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <console/console.h> |
| #include <stdlib.h> |
| #include <spi_flash.h> |
| #include <spi-generic.h> |
| #include <string.h> |
| |
| #include "spi_flash_internal.h" |
| |
| /* S25FLxx-specific commands */ |
| #define CMD_S25FLXX_READ 0x03 /* Read Data Bytes */ |
| #define CMD_S25FLXX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ |
| #define CMD_S25FLXX_READID 0x90 /* Read Manufacture ID and Device ID */ |
| #define CMD_S25FLXX_WREN 0x06 /* Write Enable */ |
| #define CMD_S25FLXX_WRDI 0x04 /* Write Disable */ |
| #define CMD_S25FLXX_RDSR 0x05 /* Read Status Register */ |
| #define CMD_S25FLXX_WRSR 0x01 /* Write Status Register */ |
| #define CMD_S25FLXX_PP 0x02 /* Page Program */ |
| #define CMD_S25FLXX_SE 0xd8 /* Sector Erase */ |
| #define CMD_S25FLXX_BE 0xc7 /* Bulk Erase */ |
| #define CMD_S25FLXX_DP 0xb9 /* Deep Power-down */ |
| #define CMD_S25FLXX_RES 0xab /* Release from DP, and Read Signature */ |
| |
| #define SPSN_MANUFACTURER_ID_S25FL116K 0x01 |
| #define SPSN_ID_S25FL008A 0x0213 |
| #define SPSN_ID_S25FL016A 0x0214 |
| #define SPSN_ID_S25FL032A 0x0215 |
| #define SPSN_ID_S25FL064A 0x0216 |
| #define SPSN_ID_S25FL128S 0x0219 |
| #define SPSN_ID_S25FL128P 0x2018 |
| #define SPSN_ID_S25FL116K 0x4015 |
| #define SPSN_EXT_ID_S25FL128P_256KB 0x0300 |
| #define SPSN_EXT_ID_S25FL128P_64KB 0x0301 |
| #define SPSN_EXT_ID_S25FL032P 0x4d00 |
| #define SPSN_EXT_ID_S25FLXXS_64KB 0x4d01 |
| |
| struct spansion_spi_flash_params { |
| u8 idcode0; |
| u16 idcode1; |
| u16 idcode2; |
| int (*identify) (const struct spansion_spi_flash_params *params, |
| u8 *idcode); |
| u16 page_size; |
| u16 pages_per_sector; |
| u16 nr_sectors; |
| const char *name; |
| }; |
| |
| struct spansion_spi_flash { |
| struct spi_flash flash; |
| const struct spansion_spi_flash_params *params; |
| }; |
| |
| static inline |
| struct spansion_spi_flash *to_spansion_spi_flash(const struct spi_flash *flash) |
| { |
| return container_of(flash, struct spansion_spi_flash, flash); |
| } |
| |
| /* |
| * returns non-zero if the given idcode matches the ID of the chip. this is for |
| * chips which use 2nd, 3rd, 4th, and 5th byte. |
| */ |
| static int identify_2345(const struct spansion_spi_flash_params *params, |
| u8 *idcode) |
| { |
| u16 jedec = idcode[1] << 8 | idcode[2]; |
| u16 ext_jedec = idcode[3] << 8 | idcode[4]; |
| return (params->idcode1 == jedec) && (params->idcode2 == ext_jedec); |
| } |
| |
| /* |
| * returns non-zero if the given idcode matches the ID of the chip. this is for |
| * chips which use 1st, 2nd, and 3rd byte. |
| */ |
| static int identify_123(const struct spansion_spi_flash_params *params, |
| u8 *idcode) |
| { |
| u16 jedec = idcode[1] << 8 | idcode[2]; |
| return (params->idcode0 == idcode[0]) && (params->idcode1 == jedec); |
| } |
| |
| static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL008A, |
| .idcode2 = 0, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 16, |
| .name = "S25FL008A", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL016A, |
| .idcode2 = 0, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 32, |
| .name = "S25FL016A", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL032A, |
| .idcode2 = 0, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 64, |
| .name = "S25FL032A", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL064A, |
| .idcode2 = 0, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 128, |
| .name = "S25FL064A", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL128P, |
| .idcode2 = SPSN_EXT_ID_S25FL128P_64KB, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 256, |
| .name = "S25FL128P_64K", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL128P, |
| .idcode2 = SPSN_EXT_ID_S25FL128P_256KB, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 1024, |
| .nr_sectors = 64, |
| .name = "S25FL128P_256K", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL128S, |
| .idcode2 = SPSN_EXT_ID_S25FLXXS_64KB, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 512, |
| .name = "S25FL128S_256K", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL032A, |
| .idcode2 = SPSN_EXT_ID_S25FL032P, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 64, |
| .name = "S25FL032P", |
| }, |
| { |
| .idcode0 = 0, |
| .idcode1 = SPSN_ID_S25FL128P, |
| .idcode2 = SPSN_EXT_ID_S25FLXXS_64KB, |
| .identify = identify_2345, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 256, |
| .name = "25FS128S", |
| }, |
| { |
| .idcode0 = SPSN_MANUFACTURER_ID_S25FL116K, |
| .idcode1 = SPSN_ID_S25FL116K, |
| .idcode2 = 0, |
| .identify = identify_123, |
| .page_size = 256, |
| .pages_per_sector = 256, |
| .nr_sectors = 32, |
| .name = "S25FL116K_16M", |
| }, |
| }; |
| |
| static int spansion_write(const struct spi_flash *flash, u32 offset, size_t len, |
| const void *buf) |
| { |
| struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash); |
| unsigned long byte_addr; |
| unsigned long page_size; |
| size_t chunk_len; |
| size_t actual; |
| int ret = 0; |
| u8 cmd[4]; |
| |
| page_size = spsn->params->page_size; |
| |
| for (actual = 0; actual < len; actual += chunk_len) { |
| byte_addr = offset % page_size; |
| chunk_len = min(len - actual, page_size - byte_addr); |
| chunk_len = spi_crop_chunk(sizeof(cmd), chunk_len); |
| |
| cmd[0] = CMD_S25FLXX_PP; |
| cmd[1] = (offset >> 16) & 0xff; |
| cmd[2] = (offset >> 8) & 0xff; |
| cmd[3] = offset & 0xff; |
| |
| #if CONFIG_DEBUG_SPI_FLASH |
| printk(BIOS_SPEW, "PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x }" |
| " chunk_len = %zu\n", |
| buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); |
| #endif |
| |
| ret = spi_flash_cmd(&flash->spi, CMD_S25FLXX_WREN, NULL, 0); |
| if (ret < 0) { |
| printk(BIOS_WARNING, "SF: Enabling Write failed\n"); |
| break; |
| } |
| |
| ret = spi_flash_cmd_write(&flash->spi, cmd, 4, |
| buf + actual, chunk_len); |
| if (ret < 0) { |
| printk(BIOS_WARNING, "SF: SPANSION Page Program failed\n"); |
| break; |
| } |
| |
| ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
| if (ret) |
| break; |
| |
| offset += chunk_len; |
| } |
| |
| #if CONFIG_DEBUG_SPI_FLASH |
| printk(BIOS_SPEW, "SF: SPANSION: Successfully programmed %zu bytes @ 0x%x\n", |
| len, offset); |
| #endif |
| |
| return ret; |
| } |
| |
| static struct spansion_spi_flash spsn_flash; |
| |
| struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode) |
| { |
| const struct spansion_spi_flash_params *params; |
| struct spansion_spi_flash *spsn; |
| unsigned int i; |
| |
| for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) { |
| params = &spansion_spi_flash_table[i]; |
| if (params->identify(params, idcode)) |
| break; |
| } |
| |
| if (i == ARRAY_SIZE(spansion_spi_flash_table)) { |
| printk(BIOS_WARNING, |
| "SF: Unsupported SPANSION ID %02x %02x %02x %02x %02x\n", |
| idcode[0], idcode[1], idcode[2], idcode[3], idcode[4]); |
| return NULL; |
| } |
| |
| spsn = &spsn_flash; |
| |
| spsn->params = params; |
| memcpy(&spsn->flash.spi, spi, sizeof(*spi)); |
| spsn->flash.name = params->name; |
| |
| spsn->flash.internal_write = spansion_write; |
| spsn->flash.internal_erase = spi_flash_cmd_erase; |
| spsn->flash.internal_read = spi_flash_cmd_read_slow; |
| spsn->flash.internal_status = spi_flash_cmd_status; |
| spsn->flash.sector_size = params->page_size * params->pages_per_sector; |
| spsn->flash.size = spsn->flash.sector_size * params->nr_sectors; |
| spsn->flash.erase_cmd = CMD_S25FLXX_SE; |
| spsn->flash.status_cmd = CMD_S25FLXX_RDSR; |
| |
| return &spsn->flash; |
| } |