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cmd: env: add -nv option for UEFI non-volatile variable

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With this option, -nv, at "setenv -e" command, a variable will be defined
as non-volatile.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
AKASHI Takahiro 2019-06-04 15:52:11 +09:00 committed by Heinrich Schuchardt
parent f658c2e190
commit 4b27a76132
2 changed files with 14 additions and 4 deletions
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3
cmd/nvedit.c
View File

@ -1344,8 +1344,9 @@ U_BOOT_CMD_COMPLETE(
setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
"set environment variables",
#if defined(CONFIG_CMD_NVEDIT_EFI)
"-e name [value ...]\n"
"-e [-nv] name [value ...]\n"
" - set UEFI variable 'name' to 'value' ...'\n"
" 'nv' option makes the variable non-volatile\n"
" - delete UEFI variable 'name' if 'value' not specified\n"
#endif
"setenv [-f] name value ...\n"

15
cmd/nvedit_efi.c
View File

@ -349,6 +349,7 @@ int do_env_set_efi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
u16 *var_name16 = NULL, *p;
size_t len;
efi_guid_t guid;
u32 attributes;
efi_status_t ret;
if (argc == 1)
@ -362,6 +363,16 @@ int do_env_set_efi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return CMD_RET_FAILURE;
}
attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS;
if (!strcmp(argv[1], "-nv")) {
attributes |= EFI_VARIABLE_NON_VOLATILE;
argc--;
argv++;
if (argc == 1)
return CMD_RET_SUCCESS;
}
var_name = argv[1];
if (argc == 2) {
/* delete */
@ -391,9 +402,7 @@ int do_env_set_efi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
utf8_utf16_strncpy(&p, var_name, len + 1);
guid = efi_global_variable_guid;
ret = EFI_CALL(efi_set_variable(var_name16, &guid,
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
ret = EFI_CALL(efi_set_variable(var_name16, &guid, attributes,
size, value));
if (ret == EFI_SUCCESS) {
ret = CMD_RET_SUCCESS;