diff options
Diffstat (limited to 'env/dataflash.c')
-rw-r--r-- | env/dataflash.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/env/dataflash.c b/env/dataflash.c deleted file mode 100644 index 77bc595e0d..0000000000 --- a/env/dataflash.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * LowLevel function for DataFlash environment support - * Author : Gilles Gastaldi (Atmel) - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> -#include <command.h> -#include <environment.h> -#include <linux/stddef.h> -#include <dataflash.h> -#include <search.h> -#include <errno.h> - -DECLARE_GLOBAL_DATA_PTR; - -static int env_dataflash_get_char(int index) -{ - uchar c; - - read_dataflash(CONFIG_ENV_ADDR + index + offsetof(env_t, data), - 1, (char *)&c); - return c; -} - -static int env_dataflash_load(void) -{ - ulong crc, new = 0; - unsigned off; - char buf[CONFIG_ENV_SIZE]; - - /* Read old CRC */ - read_dataflash(CONFIG_ENV_ADDR + offsetof(env_t, crc), - sizeof(ulong), (char *)&crc); - - /* Read whole environment */ - read_dataflash(CONFIG_ENV_ADDR, CONFIG_ENV_SIZE, buf); - - /* Calculate the CRC */ - off = offsetof(env_t, data); - new = crc32(new, (unsigned char *)(buf + off), ENV_SIZE); - - if (crc == new) - env_import(buf, 1); - else - set_default_env("!bad CRC"); - - return 0; -} - -#ifdef CONFIG_ENV_OFFSET_REDUND -#error No support for redundant environment on dataflash yet! -#endif - -static int env_dataflash_save(void) -{ - env_t env_new; - int ret; - - ret = env_export(&env_new); - if (ret) - return ret; - - return write_dataflash(CONFIG_ENV_ADDR, - (unsigned long)&env_new, - CONFIG_ENV_SIZE); -} - -U_BOOT_ENV_LOCATION(dataflash) = { - .location = ENVL_DATAFLASH, - ENV_NAME("dataflash") - .get_char = env_dataflash_get_char, - .load = env_dataflash_load, - .save = env_save_ptr(env_dataflash_save), -}; |