2 * (C) Copyright 2010, ucRobotics Inc.
3 * Author: Chong Huang <chuang@ucrobotics.com>
4 * Licensed under the GPL-2 or later.
11 #include "spi_flash_internal.h"
13 /* EN25Q128-specific commands */
14 #define CMD_EN25Q128_SE 0x20 /* Sector Erase */
15 #define CMD_EN25Q128_BE 0xd8 /* Block Erase */
17 struct eon_spi_flash_params {
21 u16 sectors_per_block;
26 static const struct eon_spi_flash_params eon_spi_flash_table[] = {
30 .pages_per_sector = 16,
31 .sectors_per_block = 16,
38 .pages_per_sector = 16,
39 .sectors_per_block = 16,
46 .pages_per_sector = 16,
47 .sectors_per_block = 16,
53 static int eon_erase(struct spi_flash *flash, u32 offset, size_t len)
55 return spi_flash_cmd_erase(flash, CMD_EN25Q128_BE, offset, len);
58 struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode)
60 const struct eon_spi_flash_params *params;
61 struct spi_flash *flash;
64 for (i = 0; i < ARRAY_SIZE(eon_spi_flash_table); ++i) {
65 params = &eon_spi_flash_table[i];
66 if (params->idcode1 == idcode[2])
70 if (i == ARRAY_SIZE(eon_spi_flash_table)) {
71 debug("SF: Unsupported EON ID %02x\n", idcode[1]);
75 flash = malloc(sizeof(*flash));
77 debug("SF: Failed to allocate memory\n");
82 flash->name = params->name;
84 flash->write = spi_flash_cmd_write_multi;
85 flash->erase = eon_erase;
86 flash->read = spi_flash_cmd_read_fast;
87 flash->page_size = params->page_size;
88 flash->sector_size = params->page_size * params->pages_per_sector
89 * params->sectors_per_block;
90 flash->size = params->page_size * params->pages_per_sector