[U-Boot] [PATCH v5 7/7] cmd: env: add "-e" option for handling UEFI variables

[Alexander Graf]

On 01/21/2019 08:49 AM, AKASHI Takahiro wrote:
> "env [print|set] -e" allows for handling uefi variables without
> knowing details about mapping to corresponding u-boot variables.
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>   cmd/nvedit.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++-
>   1 file changed, 58 insertions(+), 1 deletion(-)
>
> diff --git a/cmd/nvedit.c b/cmd/nvedit.c
> index ce746bbf1b3e..1b971d7233bc 100644
> --- a/cmd/nvedit.c
> +++ b/cmd/nvedit.c
> @@ -27,6 +27,8 @@
>   #include <cli.h>
>   #include <command.h>
>   #include <console.h>
> +#include <efi.h>
> +#include <efi_loader.h>
>   #include <environment.h>
>   #include <search.h>
>   #include <errno.h>
> @@ -119,6 +121,25 @@ static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
>   	int rcode = 0;
>   	int env_flag = H_HIDE_DOT;
>   
> +#if defined(CONFIG_EFI_LOADER)
> +	if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e') {
> +		efi_status_t r;
> +
> +		argc--;
> +		argv++;
> +
> +		/* Initialize EFI drivers */
> +		r = efi_init_obj_list();
> +		if (r != EFI_SUCCESS) {
> +			printf("Error: Cannot set up EFI drivers, r = %lu\n",
> +			       r & ~EFI_ERROR_MASK);
> +			return CMD_RET_FAILURE;
> +		}

No need for efi_init_obj_list() here, as it's already done by 
do_efi_dump_var_ext(), no?

> +
> +		return do_efi_dump_var_ext(cmdtp, flag, argc, argv);
> +	}
> +#endif
> +
>   	if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') {
>   		argc--;
>   		argv++;
> @@ -216,6 +237,26 @@ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag)
>   	ENTRY e, *ep;
>   
>   	debug("Initial value for argc=%d\n", argc);
> +
> +#if defined(CONFIG_EFI_LOADER)
> +	if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e') {
> +		efi_status_t r;
> +
> +		argc--;
> +		argv++;
> +
> +		/* Initialize EFI drivers */
> +		r = efi_init_obj_list();
> +		if (r != EFI_SUCCESS) {
> +			printf("Error: Cannot set up EFI drivers, r = %lu\n",
> +			       r & ~EFI_ERROR_MASK);
> +			return CMD_RET_FAILURE;
> +		}

Same here.


Alex

> +
> +		return do_efi_set_var_ext(NULL, flag, argc, argv);
> +	}
> +#endif
> +
>   	while (argc > 1 && **(argv + 1) == '-') {
>   		char *arg = *++argv;
>   
> @@ -1262,15 +1303,23 @@ static char env_help_text[] =
>   #if defined(CONFIG_CMD_IMPORTENV)
>   	"env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] - import environment\n"
>   #endif
> +#if defined(CONFIG_EFI_LOADER)
> +	"env print [-a | -e [name] | name ...] - print environment\n"
> +#else
>   	"env print [-a | name ...] - print environment\n"
> +#endif
>   #if defined(CONFIG_CMD_RUN)
>   	"env run var [...] - run commands in an environment variable\n"
>   #endif
>   #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
>   	"env save - save environment\n"
>   #endif
> +#if defined(CONFIG_EFI_LOADER)
> +	"env set [-e | -f] name [arg ...]\n";
> +#else
>   	"env set [-f] name [arg ...]\n";
>   #endif
> +#endif
>   
>   U_BOOT_CMD(
>   	env, CONFIG_SYS_MAXARGS, 1, do_env,
> @@ -1295,6 +1344,10 @@ U_BOOT_CMD_COMPLETE(
>   	printenv, CONFIG_SYS_MAXARGS, 1,	do_env_print,
>   	"print environment variables",
>   	"[-a]\n    - print [all] values of all environment variables\n"
> +#if defined(CONFIG_EFI_LOADER)
> +	"printenv -e [<name>]\n"
> +	"    - print UEFI variable 'name' or all the variables\n"
> +#endif
>   	"printenv name ...\n"
>   	"    - print value of environment variable 'name'",
>   	var_complete
> @@ -1322,7 +1375,11 @@ U_BOOT_CMD_COMPLETE(
>   U_BOOT_CMD_COMPLETE(
>   	setenv, CONFIG_SYS_MAXARGS, 0,	do_env_set,
>   	"set environment variables",
> -	"[-f] name value ...\n"
> +#if defined(CONFIG_EFI_LOADER)
> +	"-e <name> [<value>]\n"
> +	"    - set UEFI variable 'name' to 'value' ...'\n"
> +#endif
> +	"setenv [-f] name value ...\n"
>   	"    - [forcibly] set environment variable 'name' to 'value ...'\n"
>   	"setenv [-f] name\n"
>   	"    - [forcibly] delete environment variable 'name'",