| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2010 DENX Software Engineering |
| 3 | * Wolfgang Denk <wd@denx.de> |
| 4 | * |
| 5 | * (C) Copyright 2005-2009 Samsung Electronics |
| 6 | * Kyungmin Park <kyungmin.park@samsung.com> |
| 7 | * |
| 8 | * SPDX-License-Identifier: GPL-2.0+ |
| 9 | */ |
| 10 | |
| 11 | #include <common.h> |
| 12 | #include <command.h> |
| 13 | #include <environment.h> |
| 14 | #include <linux/stddef.h> |
| 15 | #include <malloc.h> |
| 16 | #include <search.h> |
| 17 | #include <errno.h> |
| 18 | #include <onenand_uboot.h> |
| 19 | |
| 20 | #include <linux/compat.h> |
| 21 | #include <linux/mtd/mtd.h> |
| 22 | #include <linux/mtd/onenand.h> |
| 23 | |
| 24 | char *env_name_spec = "OneNAND"; |
| 25 | |
| 26 | #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE |
| 27 | #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE) |
| 28 | |
| 29 | DECLARE_GLOBAL_DATA_PTR; |
| 30 | |
| 31 | void env_relocate_spec(void) |
| 32 | { |
| 33 | struct mtd_info *mtd = &onenand_mtd; |
| 34 | #ifdef CONFIG_ENV_ADDR_FLEX |
| 35 | struct onenand_chip *this = &onenand_chip; |
| 36 | #endif |
| 37 | int rc; |
| 38 | size_t retlen; |
| 39 | #ifdef ENV_IS_EMBEDDED |
| 40 | char *buf = (char *)&environment; |
| 41 | #else |
| 42 | loff_t env_addr = CONFIG_ENV_ADDR; |
| 43 | char onenand_env[ONENAND_MAX_ENV_SIZE]; |
| 44 | char *buf = (char *)&onenand_env[0]; |
| 45 | #endif /* ENV_IS_EMBEDDED */ |
| 46 | |
| 47 | #ifndef ENV_IS_EMBEDDED |
| 48 | # ifdef CONFIG_ENV_ADDR_FLEX |
| 49 | if (FLEXONENAND(this)) |
| 50 | env_addr = CONFIG_ENV_ADDR_FLEX; |
| 51 | # endif |
| 52 | /* Check OneNAND exist */ |
| 53 | if (mtd->writesize) |
| 54 | /* Ignore read fail */ |
| 55 | mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, |
| 56 | &retlen, (u_char *)buf); |
| 57 | else |
| 58 | mtd->writesize = MAX_ONENAND_PAGESIZE; |
| 59 | #endif /* !ENV_IS_EMBEDDED */ |
| 60 | |
| 61 | rc = env_import(buf, 1); |
| 62 | if (rc) |
| 63 | gd->env_valid = 1; |
| 64 | } |
| 65 | |
| 66 | int saveenv(void) |
| 67 | { |
| 68 | env_t env_new; |
| 69 | ssize_t len; |
| 70 | char *res; |
| 71 | struct mtd_info *mtd = &onenand_mtd; |
| 72 | #ifdef CONFIG_ENV_ADDR_FLEX |
| 73 | struct onenand_chip *this = &onenand_chip; |
| 74 | #endif |
| 75 | loff_t env_addr = CONFIG_ENV_ADDR; |
| 76 | size_t retlen; |
| 77 | struct erase_info instr = { |
| 78 | .callback = NULL, |
| 79 | }; |
| 80 | |
| 81 | res = (char *)&env_new.data; |
| 82 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
| 83 | if (len < 0) { |
| 84 | error("Cannot export environment: errno = %d\n", errno); |
| 85 | return 1; |
| 86 | } |
| 87 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); |
| 88 | |
| 89 | instr.len = CONFIG_ENV_SIZE; |
| 90 | #ifdef CONFIG_ENV_ADDR_FLEX |
| 91 | if (FLEXONENAND(this)) { |
| 92 | env_addr = CONFIG_ENV_ADDR_FLEX; |
| 93 | instr.len = CONFIG_ENV_SIZE_FLEX; |
| 94 | instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ? |
| 95 | 1 : 0; |
| 96 | } |
| 97 | #endif |
| 98 | instr.addr = env_addr; |
| 99 | instr.mtd = mtd; |
| 100 | if (mtd_erase(mtd, &instr)) { |
| 101 | printf("OneNAND: erase failed at 0x%08llx\n", env_addr); |
| 102 | return 1; |
| 103 | } |
| 104 | |
| 105 | if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, |
| 106 | (u_char *)&env_new)) { |
| 107 | printf("OneNAND: write failed at 0x%llx\n", instr.addr); |
| 108 | return 2; |
| 109 | } |
| 110 | |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | int env_init(void) |
| 115 | { |
| 116 | /* use default */ |
| 117 | gd->env_addr = (ulong)&default_environment[0]; |
| 118 | gd->env_valid = 1; |
| 119 | |
| 120 | return 0; |
| 121 | } |