diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/Kconfig | 15 | ||||
| -rw-r--r-- | cmd/mem.c | 52 | ||||
| -rw-r--r-- | cmd/nvedit.c | 20 |
3 files changed, 87 insertions, 0 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig index 67284d8a5f..175c6ad9e3 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -408,6 +408,14 @@ config CMD_SAVEENV Save all environment variables into the compiled-in persistent storage. +config CMD_ERASEENV + bool "eraseenv" + default n + depends on CMD_SAVEENV + help + Erase environment variables from the compiled-in persistent + storage. + config CMD_ENV_EXISTS bool "env exists" default y @@ -563,6 +571,13 @@ config CMD_MEMORY base - print or set address offset loop - initialize loop on address range +config CMD_RANDOM + bool "random" + default y + depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND) + help + random - fill memory with random data + config CMD_MEMTEST bool "memtest" help @@ -1082,6 +1082,49 @@ static int do_mem_crc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #endif +#ifdef CONFIG_CMD_RANDOM +static int do_random(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + unsigned long addr, len; + unsigned long seed; // NOT INITIALIZED ON PURPOSE + unsigned int *buf, *start; + unsigned char *buf8; + unsigned int i; + + if (argc < 3 || argc > 4) { + printf("usage: %s <addr> <len> [<seed>]\n", argv[0]); + return 0; + } + + len = simple_strtoul(argv[2], NULL, 16); + addr = simple_strtoul(argv[1], NULL, 16); + + if (argc == 4) { + seed = simple_strtoul(argv[3], NULL, 16); + if (seed == 0) { + printf("The seed cannot be 0. Using 0xDEADBEEF.\n"); + seed = 0xDEADBEEF; + } + } else { + seed = get_timer(0) ^ rand(); + } + + srand(seed); + start = map_sysmem(addr, len); + buf = start; + for (i = 0; i < (len / 4); i++) + *buf++ = rand(); + + buf8 = (unsigned char *)buf; + for (i = 0; i < (len % 4); i++) + *buf8++ = rand() & 0xFF; + + unmap_sysmem(start); + printf("%lu bytes filled with random data\n", len); + return 1; +} +#endif + /**************************************************/ U_BOOT_CMD( md, 3, 1, do_mem_md, @@ -1250,3 +1293,12 @@ U_BOOT_CMD( "" ); #endif + +#ifdef CONFIG_CMD_RANDOM +U_BOOT_CMD( + random, 4, 0, do_random, + "fill memory with random pattern", + "<addr> <len> [<seed>]\n" + " - Fill 'len' bytes of memory starting at 'addr' with random data\n" +); +#endif diff --git a/cmd/nvedit.c b/cmd/nvedit.c index 7e468ab39d..46b1e60f0a 100644 --- a/cmd/nvedit.c +++ b/cmd/nvedit.c @@ -767,6 +767,20 @@ U_BOOT_CMD( "save environment variables to persistent storage", "" ); + +#if defined(CONFIG_CMD_ERASEENV) +static int do_env_erase(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + return env_erase() ? 1 : 0; +} + +U_BOOT_CMD( + eraseenv, 1, 0, do_env_erase, + "erase environment variables from persistent storage", + "" +); +#endif #endif #endif /* CONFIG_SPL_BUILD */ @@ -1316,6 +1330,9 @@ static cmd_tbl_t cmd_env_sub[] = { #endif #if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE) U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), +#if defined(CONFIG_CMD_ERASEENV) + U_BOOT_CMD_MKENT(erase, 1, 0, do_env_erase, "", ""), +#endif #endif U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), #if defined(CONFIG_CMD_ENV_EXISTS) @@ -1396,6 +1413,9 @@ static char env_help_text[] = #endif #if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE) "env save - save environment\n" +#if defined(CONFIG_CMD_ERASEENV) + "env erase - erase environment\n" +#endif #endif #if defined(CONFIG_CMD_NVEDIT_EFI) "env set -e name [arg ...] - set UEFI variable; unset if 'arg' not specified\n" |