// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2010 DENX Software Engineering * Wolfgang Denk <wd@denx.de> * * (C) Copyright 2005-2009 Samsung Electronics * Kyungmin Park <kyungmin.park@samsung.com> */ #include <common.h> #include <command.h> #include <env_internal.h> #include <asm/global_data.h> #include <linux/stddef.h> #include <malloc.h> #include <search.h> #include <errno.h> #include <onenand_uboot.h> #include <linux/compat.h> #include <linux/mtd/mtd.h> #include <linux/mtd/onenand.h> #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE) DECLARE_GLOBAL_DATA_PTR; static int env_onenand_load(void) { struct mtd_info *mtd = &onenand_mtd; #ifdef CONFIG_ENV_ADDR_FLEX struct onenand_chip *this = &onenand_chip; #endif int rc; size_t retlen; #ifdef ENV_IS_EMBEDDED char *buf = (char *)&environment; #else loff_t env_addr = CONFIG_ENV_ADDR; char onenand_env[ONENAND_MAX_ENV_SIZE]; char *buf = (char *)&onenand_env[0]; #endif /* ENV_IS_EMBEDDED */ #ifndef ENV_IS_EMBEDDED # ifdef CONFIG_ENV_ADDR_FLEX if (FLEXONENAND(this)) env_addr = CONFIG_ENV_ADDR_FLEX; # endif /* Check OneNAND exist */ if (mtd->writesize) /* Ignore read fail */ mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, (u_char *)buf); else mtd->writesize = MAX_ONENAND_PAGESIZE; #endif /* !ENV_IS_EMBEDDED */ rc = env_import(buf, 1, H_EXTERNAL); if (!rc) gd->env_valid = ENV_VALID; return rc; } static int env_onenand_save(void) { env_t env_new; int ret; struct mtd_info *mtd = &onenand_mtd; #ifdef CONFIG_ENV_ADDR_FLEX struct onenand_chip *this = &onenand_chip; #endif loff_t env_addr = CONFIG_ENV_ADDR; size_t retlen; struct erase_info instr = { .callback = NULL, }; ret = env_export(&env_new); if (ret) return ret; instr.len = CONFIG_ENV_SIZE; #ifdef CONFIG_ENV_ADDR_FLEX if (FLEXONENAND(this)) { env_addr = CONFIG_ENV_ADDR_FLEX; instr.len = CONFIG_ENV_SIZE_FLEX; instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ? 1 : 0; } #endif instr.addr = env_addr; instr.mtd = mtd; if (mtd_erase(mtd, &instr)) { printf("OneNAND: erase failed at 0x%08llx\n", env_addr); return 1; } if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, (u_char *)&env_new)) { printf("OneNAND: write failed at 0x%llx\n", instr.addr); return 2; } return 0; } U_BOOT_ENV_LOCATION(onenand) = { .location = ENVL_ONENAND, ENV_NAME("OneNAND") .load = env_onenand_load, .save = env_save_ptr(env_onenand_save), };