projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 9fe6d871 DS |
2 | /* |
| 3 | * Copyright (C) 2012-2014 Daniel Schwierzeck, daniel.schwierzeck@gmail.com | |
| 9fe6d871 DS |
4 | */ |
| 5 | ||
| 6 | #include <common.h> | |
| 7 | #include <malloc.h> | |
| 1221ce45 | 8 | #include <linux/errno.h> |
| 9fe6d871 DS |
9 | #include <linux/mtd/mtd.h> |
| 10 | #include <spi_flash.h> | |
| 11 | ||
| 12 | static struct mtd_info sf_mtd_info; | |
| 13 | static char sf_mtd_name[8]; | |
| 14 | ||
| 15 | static int spi_flash_mtd_erase(struct mtd_info *mtd, struct erase_info *instr) | |
| 16 | { | |
| 17 | struct spi_flash *flash = mtd->priv; | |
| 18 | int err; | |
| 19 | ||
| 20 | instr->state = MTD_ERASING; | |
| 21 | ||
| 22 | err = spi_flash_erase(flash, instr->addr, instr->len); | |
| 23 | if (err) { | |
| 24 | instr->state = MTD_ERASE_FAILED; | |
| 25 | instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; | |
| 26 | return -EIO; | |
| 27 | } | |
| 28 | ||
| 29 | instr->state = MTD_ERASE_DONE; | |
| 30 | mtd_erase_callback(instr); | |
| 31 | ||
| 32 | return 0; | |
| 33 | } | |
| 34 | ||
| 35 | static int spi_flash_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, | |
| 36 | size_t *retlen, u_char *buf) | |
| 37 | { | |
| 38 | struct spi_flash *flash = mtd->priv; | |
| 39 | int err; | |
| 40 | ||
| 41 | err = spi_flash_read(flash, from, len, buf); | |
| 42 | if (!err) | |
| 43 | *retlen = len; | |
| 44 | ||
| 45 | return err; | |
| 46 | } | |
| 47 | ||
| 48 | static int spi_flash_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, | |
| 49 | size_t *retlen, const u_char *buf) | |
| 50 | { | |
| 51 | struct spi_flash *flash = mtd->priv; | |
| 52 | int err; | |
| 53 | ||
| 54 | err = spi_flash_write(flash, to, len, buf); | |
| 55 | if (!err) | |
| 56 | *retlen = len; | |
| 57 | ||
| 58 | return err; | |
| 59 | } | |
| 60 | ||
| 61 | static void spi_flash_mtd_sync(struct mtd_info *mtd) | |
| 62 | { | |
| 63 | } | |
| 64 | ||
| 65 | static int spi_flash_mtd_number(void) | |
| 66 | { | |
| 67 | #ifdef CONFIG_SYS_MAX_FLASH_BANKS | |
| 68 | return CONFIG_SYS_MAX_FLASH_BANKS; | |
| 69 | #else | |
| 70 | return 0; | |
| 71 | #endif | |
| 72 | } | |
| 73 | ||
| 74 | int spi_flash_mtd_register(struct spi_flash *flash) | |
| 75 | { | |
| 76 | memset(&sf_mtd_info, 0, sizeof(sf_mtd_info)); | |
| 77 | sprintf(sf_mtd_name, "nor%d", spi_flash_mtd_number()); | |
| 78 | ||
| 79 | sf_mtd_info.name = sf_mtd_name; | |
| 80 | sf_mtd_info.type = MTD_NORFLASH; | |
| 81 | sf_mtd_info.flags = MTD_CAP_NORFLASH; | |
| 82 | sf_mtd_info.writesize = 1; | |
| 83 | sf_mtd_info.writebufsize = flash->page_size; | |
| 84 | ||
| 85 | sf_mtd_info._erase = spi_flash_mtd_erase; | |
| 86 | sf_mtd_info._read = spi_flash_mtd_read; | |
| 87 | sf_mtd_info._write = spi_flash_mtd_write; | |
| 88 | sf_mtd_info._sync = spi_flash_mtd_sync; | |
| 89 | ||
| 90 | sf_mtd_info.size = flash->size; | |
| 91 | sf_mtd_info.priv = flash; | |
| 92 | ||
| 93 | /* Only uniform flash devices for now */ | |
| 94 | sf_mtd_info.numeraseregions = 0; | |
| 95 | sf_mtd_info.erasesize = flash->sector_size; | |
| 96 | ||
| 97 | return add_mtd_device(&sf_mtd_info); | |
| 98 | } | |
| 99 | ||
| 100 | void spi_flash_mtd_unregister(void) | |
| 101 | { | |
| 102 | del_mtd_device(&sf_mtd_info); | |
| 103 | } |