| Sughosh Ganu | ffe9698 | 2020-12-30 19:27:02 +0530 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright (c) 2020 Linaro Limited |
| 4 | */ |
| 5 | |
| 6 | #include <common.h> |
| 7 | #include <dm.h> |
| 8 | #include <mtd.h> |
| 9 | |
| 10 | #include <linux/string.h> |
| 11 | |
| 12 | #define MTDPARTS_LEN 256 |
| 13 | #define MTDIDS_LEN 128 |
| 14 | |
| 15 | static void board_get_mtdparts(const char *dev, const char *partition, |
| 16 | char *mtdids, char *mtdparts) |
| 17 | { |
| 18 | /* mtdids: "<dev>=<dev>, ...." */ |
| 19 | if (mtdids[0] != '\0') |
| 20 | strcat(mtdids, ","); |
| 21 | strcat(mtdids, dev); |
| 22 | strcat(mtdids, "="); |
| 23 | strcat(mtdids, dev); |
| 24 | |
| 25 | /* mtdparts: "mtdparts=<dev>:<mtdparts_<dev>>;..." */ |
| 26 | if (mtdparts[0] != '\0') |
| 27 | strncat(mtdparts, ";", MTDPARTS_LEN); |
| 28 | else |
| 29 | strcat(mtdparts, "mtdparts="); |
| 30 | |
| 31 | strncat(mtdparts, dev, MTDPARTS_LEN); |
| 32 | strncat(mtdparts, ":", MTDPARTS_LEN); |
| 33 | strncat(mtdparts, partition, MTDPARTS_LEN); |
| 34 | } |
| 35 | |
| 36 | void board_mtdparts_default(const char **mtdids, const char **mtdparts) |
| 37 | { |
| 38 | struct mtd_info *mtd; |
| 39 | struct udevice *dev; |
| 40 | const char *mtd_partition; |
| 41 | static char parts[3 * MTDPARTS_LEN + 1]; |
| 42 | static char ids[MTDIDS_LEN + 1]; |
| 43 | static bool mtd_initialized; |
| 44 | |
| 45 | if (mtd_initialized) { |
| 46 | *mtdids = ids; |
| 47 | *mtdparts = parts; |
| 48 | return; |
| 49 | } |
| 50 | |
| 51 | memset(parts, 0, sizeof(parts)); |
| 52 | memset(ids, 0, sizeof(ids)); |
| 53 | |
| 54 | /* Currently mtdparts is needed on Qemu ARM64 for capsule updates */ |
| 55 | if (IS_ENABLED(CONFIG_EFI_CAPSULE_FIRMWARE_MANAGEMENT) && |
| 56 | IS_ENABLED(CONFIG_TARGET_QEMU_ARM_64BIT)) { |
| 57 | /* probe all MTD devices */ |
| 58 | for (uclass_first_device(UCLASS_MTD, &dev); dev; |
| 59 | uclass_next_device(&dev)) { |
| 60 | debug("mtd device = %s\n", dev->name); |
| 61 | } |
| 62 | |
| 63 | mtd = get_mtd_device_nm("nor0"); |
| 64 | if (!IS_ERR_OR_NULL(mtd)) { |
| 65 | mtd_partition = CONFIG_MTDPARTS_NOR0; |
| 66 | board_get_mtdparts("nor0", mtd_partition, ids, parts); |
| 67 | put_mtd_device(mtd); |
| 68 | } |
| 69 | |
| 70 | mtd = get_mtd_device_nm("nor1"); |
| 71 | if (!IS_ERR_OR_NULL(mtd)) { |
| 72 | mtd_partition = CONFIG_MTDPARTS_NOR1; |
| 73 | board_get_mtdparts("nor1", mtd_partition, ids, parts); |
| 74 | put_mtd_device(mtd); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | mtd_initialized = true; |
| 79 | *mtdids = ids; |
| 80 | *mtdparts = parts; |
| 81 | debug("%s:mtdids=%s & mtdparts=%s\n", __func__, ids, parts); |
| 82 | } |