/* * Copyright 2009(C) Marvell International Ltd. and its affiliates * Prafulla Wadaskar * * Based on drivers/mtd/spi/stmicro.c * * Copyright 2008, Network Appliance Inc. * Jason McMullan * * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. * TsiChung Liew (Tsi-Chung.Liew@freescale.com) * * See file CREDITS for list of people who contributed to this * project. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA */ #include #include #include "spi_flash_internal.h" /* MX25xx-specific commands */ #define CMD_MX25XX_WREN 0x06 /* Write Enable */ #define CMD_MX25XX_WRDI 0x04 /* Write Disable */ #define CMD_MX25XX_RDSR 0x05 /* Read Status Register */ #define CMD_MX25XX_WRSR 0x01 /* Write Status Register */ #define CMD_MX25XX_READ 0x03 /* Read Data Bytes */ #define CMD_MX25XX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ #define CMD_MX25XX_PP 0x02 /* Page Program */ #define CMD_MX25XX_SE 0x20 /* Sector Erase */ #define CMD_MX25XX_BE 0xD8 /* Block Erase */ #define CMD_MX25XX_CE 0xc7 /* Chip Erase */ #define CMD_MX25XX_DP 0xb9 /* Deep Power-down */ #define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */ #define MACRONIX_SR_WIP (1 << 0) /* Write-in-Progress */ struct macronix_spi_flash_params { u16 idcode; u16 page_size; u16 pages_per_sector; u16 sectors_per_block; u16 nr_blocks; const char *name; }; struct macronix_spi_flash { struct spi_flash flash; const struct macronix_spi_flash_params *params; }; static inline struct macronix_spi_flash *to_macronix_spi_flash(struct spi_flash *flash) { return container_of(flash, struct macronix_spi_flash, flash); } static const struct macronix_spi_flash_params macronix_spi_flash_table[] = { { .idcode = 0x2015, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 32, .name = "MX25L1605D", }, { .idcode = 0x2016, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 64, .name = "MX25L3205D", }, { .idcode = 0x5e16, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 64, .name = "MX25L3235D", /* MX25L3225D/MX25L3235D/MX25L3237D */ }, { .idcode = 0x2017, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 128, .name = "MX25L6405D", }, { .idcode = 0x2018, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 256, .name = "MX25L12805D", }, { .idcode = 0x2618, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 256, .name = "MX25L12855E", }, { .idcode = 0x2537, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 128, .name = "MX25U6435F", }, { .idcode = 0x9517, .page_size = 256, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 128, .name = "MX25L6495F", }, }; static int macronix_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash); unsigned long byte_addr; unsigned long page_size; size_t chunk_len; size_t actual; int ret; u8 cmd[4]; page_size = mcx->params->page_size; byte_addr = offset % page_size; flash->spi->rw = SPI_WRITE_FLAG; ret = spi_claim_bus(flash->spi); if (ret) { printk(BIOS_WARNING, "SF: Unable to claim SPI bus\n"); return ret; } ret = 0; for (actual = 0; actual < len; actual += chunk_len) { chunk_len = min(len - actual, page_size - byte_addr); chunk_len = spi_crop_chunk(sizeof(cmd), chunk_len); cmd[0] = CMD_MX25XX_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_MX25XX_WREN, NULL, 0); if (ret < 0) { printk(BIOS_WARNING, "SF: Enabling Write failed\n"); break; } ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf + actual, chunk_len); if (ret < 0) { printk(BIOS_WARNING, "SF: Macronix Page Program failed\n"); break; } ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); if (ret) break; offset += chunk_len; byte_addr = 0; } #if CONFIG_DEBUG_SPI_FLASH printk(BIOS_SPEW, "SF: Macronix: Successfully programmed %zu bytes @" " 0x%lx\n", len, (unsigned long)(offset - len)); #endif spi_release_bus(flash->spi); return ret; } static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len) { return spi_flash_cmd_erase(flash, CMD_MX25XX_SE, offset, len); } struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode) { const struct macronix_spi_flash_params *params; struct macronix_spi_flash *mcx; unsigned int i; u16 id = idcode[2] | idcode[1] << 8; for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) { params = ¯onix_spi_flash_table[i]; if (params->idcode == id) break; } if (i == ARRAY_SIZE(macronix_spi_flash_table)) { printk(BIOS_WARNING, "SF: Unsupported Macronix ID %04x\n", id); return NULL; } mcx = malloc(sizeof(*mcx)); if (!mcx) { printk(BIOS_WARNING, "SF: Failed to allocate memory\n"); return NULL; } mcx->params = params; mcx->flash.spi = spi; mcx->flash.name = params->name; mcx->flash.write = macronix_write; mcx->flash.erase = macronix_erase; #if CONFIG_SPI_FLASH_NO_FAST_READ mcx->flash.read = spi_flash_cmd_read_slow; #else mcx->flash.read = spi_flash_cmd_read_fast; #endif mcx->flash.sector_size = params->page_size * params->pages_per_sector; mcx->flash.size = mcx->flash.sector_size * params->sectors_per_block * params->nr_blocks; return &mcx->flash; }