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 = ENV_VALID; 64 } 65 66 int saveenv(void) 67 { 68 env_t env_new; 69 int ret; 70 struct mtd_info *mtd = &onenand_mtd; 71 #ifdef CONFIG_ENV_ADDR_FLEX 72 struct onenand_chip *this = &onenand_chip; 73 #endif 74 loff_t env_addr = CONFIG_ENV_ADDR; 75 size_t retlen; 76 struct erase_info instr = { 77 .callback = NULL, 78 }; 79 80 ret = env_export(&env_new); 81 if (ret) 82 return ret; 83 84 instr.len = CONFIG_ENV_SIZE; 85 #ifdef CONFIG_ENV_ADDR_FLEX 86 if (FLEXONENAND(this)) { 87 env_addr = CONFIG_ENV_ADDR_FLEX; 88 instr.len = CONFIG_ENV_SIZE_FLEX; 89 instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ? 90 1 : 0; 91 } 92 #endif 93 instr.addr = env_addr; 94 instr.mtd = mtd; 95 if (mtd_erase(mtd, &instr)) { 96 printf("OneNAND: erase failed at 0x%08llx\n", env_addr); 97 return 1; 98 } 99 100 if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, 101 (u_char *)&env_new)) { 102 printf("OneNAND: write failed at 0x%llx\n", instr.addr); 103 return 2; 104 } 105 106 return 0; 107 } 108 109 int env_init(void) 110 { 111 /* use default */ 112 gd->env_addr = (ulong)&default_environment[0]; 113 gd->env_valid = ENV_VALID; 114 115 return 0; 116 } 117