/* * (C) Copyright 2000-2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * Copyright 2008, Network Appliance Inc. * Jason McMullan <mcmullan@netapp.com> * * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. * TsiChung Liew (Tsi-Chung.Liew@freescale.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" /* M25Pxx-specific commands */ #define CMD_M25PXX_WREN 0x06 /* Write Enable */ #define CMD_M25PXX_WRDI 0x04 /* Write Disable */ #define CMD_M25PXX_RDSR 0x05 /* Read Status Register */ #define CMD_M25PXX_WRSR 0x01 /* Write Status Register */ #define CMD_M25PXX_READ 0x03 /* Read Data Bytes */ #define CMD_M25PXX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ #define CMD_M25PXX_PP 0x02 /* Page Program */ #define CMD_M25PXX_SSE 0x20 /* Subsector Erase */ #define CMD_M25PXX_SE 0xd8 /* Sector Erase */ #define CMD_M25PXX_BE 0xc7 /* Bulk Erase */ #define CMD_M25PXX_DP 0xb9 /* Deep Power-down */ #define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */ /* * Device ID = (memory_type << 8) + memory_capacity */ #define STM_ID_M25P10 0x2011 #define STM_ID_M25P16 0x2015 #define STM_ID_M25P20 0x2012 #define STM_ID_M25P32 0x2016 #define STM_ID_M25P40 0x2013 #define STM_ID_M25P64 0x2017 #define STM_ID_M25P80 0x2014 #define STM_ID_M25P128 0x2018 #define STM_ID_N25Q256 0xba19 #define STM_ID_N25Q064 0xbb17 #define STM_ID_N25Q128 0xbb18 #define STM_ID_N25Q128A 0xba18 struct stmicro_spi_flash_params { u16 device_id; u8 op_erase; u16 page_size; u16 pages_per_sector; u16 nr_sectors; const char *name; }; static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = { { .device_id = STM_ID_M25P10, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 128, .nr_sectors = 4, .name = "M25P10", }, { .device_id = STM_ID_M25P16, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 32, .name = "M25P16", }, { .device_id = STM_ID_M25P20, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 4, .name = "M25P20", }, { .device_id = STM_ID_M25P32, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 64, .name = "M25P32", }, { .device_id = STM_ID_M25P40, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 8, .name = "M25P40", }, { .device_id = STM_ID_M25P64, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 128, .name = "M25P64", }, { .device_id = STM_ID_M25P80, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 16, .name = "M25P80", }, { .device_id = STM_ID_M25P128, .op_erase = CMD_M25PXX_SE, .page_size = 256, .pages_per_sector = 1024, .nr_sectors = 64, .name = "M25P128", }, { .device_id = STM_ID_N25Q064, .op_erase = CMD_M25PXX_SSE, .page_size = 256, .pages_per_sector = 16, .nr_sectors = 2048, .name = "N25Q064", }, { .device_id = STM_ID_N25Q128, .op_erase = CMD_M25PXX_SSE, .page_size = 256, .pages_per_sector = 16, .nr_sectors = 4096, .name = "N25Q128", }, { .device_id = STM_ID_N25Q128A, .op_erase = CMD_M25PXX_SSE, .page_size = 256, .pages_per_sector = 16, .nr_sectors = 4096, .name = "N25Q128A", }, { .device_id = STM_ID_N25Q256, .op_erase = CMD_M25PXX_SSE, .page_size = 256, .pages_per_sector = 16, .nr_sectors = 8192, .name = "N25Q256", }, }; static int stmicro_write(const struct spi_flash *flash, u32 offset, size_t len, const void *buf) { unsigned long byte_addr; unsigned long page_size; size_t chunk_len; size_t actual; int ret = 0; u8 cmd[4]; page_size = flash->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(&flash->spi, sizeof(cmd), chunk_len); cmd[0] = CMD_M25PXX_PP; cmd[1] = (offset >> 16) & 0xff; cmd[2] = (offset >> 8) & 0xff; cmd[3] = offset & 0xff; #if IS_ENABLED(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_M25PXX_WREN, NULL, 0); if (ret < 0) { printk(BIOS_WARNING, "SF: Enabling Write failed\n"); goto out; } ret = spi_flash_cmd_write(&flash->spi, cmd, sizeof(cmd), buf + actual, chunk_len); if (ret < 0) { printk(BIOS_WARNING, "SF: STMicro Page Program failed\n"); goto out; } ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); if (ret) goto out; offset += chunk_len; } #if IS_ENABLED(CONFIG_DEBUG_SPI_FLASH) printk(BIOS_SPEW, "SF: STMicro: Successfully programmed %zu bytes @" " 0x%lx\n", len, (unsigned long)(offset - len)); #endif ret = 0; out: return ret; } static const struct spi_flash_ops spi_flash_ops = { .write = stmicro_write, .erase = spi_flash_cmd_erase, .read = spi_flash_cmd_read_fast, }; int spi_flash_probe_stmicro(const struct spi_slave *spi, u8 *idcode, struct spi_flash *flash) { const struct stmicro_spi_flash_params *params; unsigned int i; if (idcode[0] == 0xff) { i = spi_flash_cmd(spi, CMD_M25PXX_RES, idcode, 4); if (i) return -1; if ((idcode[3] & 0xf0) == 0x10) { idcode[0] = 0x20; idcode[1] = 0x20; idcode[2] = idcode[3] + 1; } else return -1; } for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) { params = &stmicro_spi_flash_table[i]; if (params->device_id == (idcode[1] << 8 | idcode[2])) { break; } } if (i == ARRAY_SIZE(stmicro_spi_flash_table)) { printk(BIOS_WARNING, "SF: Unsupported STMicro ID %02x%02x\n", idcode[1], idcode[2]); return -1; } memcpy(&flash->spi, spi, sizeof(*spi)); flash->name = params->name; flash->page_size = params->page_size; flash->sector_size = params->page_size * params->pages_per_sector; flash->size = flash->sector_size * params->nr_sectors; flash->erase_cmd = params->op_erase; flash->ops = &spi_flash_ops; return 0; }