[U-Boot] [PATCH v2 5/5] cmd: run: add "-e" option to run an EFI application

[Heinrich Schuchardt]

On 1/15/19 3:54 AM, AKASHI Takahiro wrote:
> "run -e" allows for executing EFI application with a specific "BootXXXX"
> variable. If no "BootXXXX" is specified or "BootOrder" is specified,
> it tries to run an EFI application specified in the order of "bootOrder."
> 

If we cannot specify the device tree what would be the use of this for
ARM processors?

Why do you add the option to run and not to bootefi?

You already introduced the capability to set BootNext. Why isn't that
enough?

Best regards

Heinrich

> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>  cmd/bootefi.c     | 31 +++++++++++++++++++++++++++++++
>  cmd/nvedit.c      |  9 ++++++++-
>  common/cli.c      | 10 ++++++++++
>  include/command.h |  3 +++
>  4 files changed, 52 insertions(+), 1 deletion(-)
> 
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 241fd0f987ab..ebe149dffa1f 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -492,6 +492,37 @@ static int do_bootefi_bootmgr_exec(int boot_id)
>  	return CMD_RET_SUCCESS;
>  }
>  
> +/* Called by "run" command */
> +int do_bootefi_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> +{
> +	int boot_id = -1;
> +	char *endp;
> +
> +	if (argc > 2)
> +		return CMD_RET_USAGE;
> +
> +	if (argc == 2) {
> +		if (!strcmp(argv[1], "BootOrder")) {
> +			boot_id = -1;
> +		} else if (!strncmp(argv[2], "Boot", 4)) {
> +			boot_id = (int)simple_strtoul(&argv[2][4], &endp, 0);
> +			if ((argv[2] + strlen(argv[2]) != endp) ||
> +			    boot_id > 0xffff)
> +				return CMD_RET_USAGE;
> +		} else {
> +			return CMD_RET_USAGE;
> +		}
> +	}
> +
> +	if (efi_init_obj_list())
> +		return CMD_RET_FAILURE;
> +
> +	if (efi_handle_fdt(NULL))
> +		return CMD_RET_FAILURE;
> +
> +	return do_bootefi_bootmgr_exec(boot_id);
> +}
> +
>  /* Interpreter command to boot an arbitrary EFI image from memory */
>  static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  {
> diff --git a/cmd/nvedit.c b/cmd/nvedit.c
> index de16c72c23f2..ce746bbf1b3e 100644
> --- a/cmd/nvedit.c
> +++ b/cmd/nvedit.c
> @@ -1344,7 +1344,14 @@ U_BOOT_CMD_COMPLETE(
>  	run,	CONFIG_SYS_MAXARGS,	1,	do_run,
>  	"run commands in an environment variable",
>  	"var [...]\n"
> -	"    - run the commands in the environment variable(s) 'var'",
> +	"    - run the commands in the environment variable(s) 'var'"
> +#if defined(CONFIG_CMD_BOOTEFI)
> +	"\n"
> +	"run -e [BootXXXX]\n"
> +	"    - load and run UEFI app based on 'BootXXXX' UEFI variable",
> +#else
> +	,
> +#endif
>  	var_complete
>  );
>  #endif
> diff --git a/common/cli.c b/common/cli.c
> index 51b8d5f85cbb..fbb09d5049a4 100644
> --- a/common/cli.c
> +++ b/common/cli.c
> @@ -12,6 +12,7 @@
>  #include <cli.h>
>  #include <cli_hush.h>
>  #include <console.h>
> +#include <efi_loader.h>
>  #include <fdtdec.h>
>  #include <malloc.h>
>  
> @@ -125,6 +126,15 @@ int do_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  	if (argc < 2)
>  		return CMD_RET_USAGE;
>  
> +#ifdef CONFIG_CMD_BOOTEFI
> +	if (!strcmp(argv[1], "-e")) {
> +		argc--;
> +		argv++;
> +
> +		return do_bootefi_run(cmdtp, flag, argc, argv);
> +	}
> +#endif
> +
>  	for (i = 1; i < argc; ++i) {
>  		char *arg;
>  
> diff --git a/include/command.h b/include/command.h
> index 200c7a5e9f4e..feddef300ccc 100644
> --- a/include/command.h
> +++ b/include/command.h
> @@ -48,6 +48,9 @@ typedef struct cmd_tbl_s	cmd_tbl_t;
>  #if defined(CONFIG_CMD_RUN)
>  extern int do_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
>  #endif
> +#if defined(CONFIG_CMD_BOOTEFI)
> +extern int do_bootefi_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
> +#endif
>  
>  /* common/command.c */
>  int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
>