[U-Boot] [PATCH 3/5] cmd: bootefi: carve out fdt parameter handling

[Alexander Graf <agraf@suse.de>]

On 18.12.18 06:02, AKASHI Takahiro wrote:
> The current way how command parameters, particularly "fdt addr," are
> handled makes it a bit complicated to add a subcommand-specific parameter.
> So just refactor the code and extract efi_handle_fdt().
> 
> This commit is a preparatory change for enhancing bootmgr sub-command.
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
> 
> Revert "fixup! fixup! cmd: bootefi: carve out fdt parameter handling"
> 
> This reverts commit abc315426e37bdfb96a48d23c1fc96399b68baa5.

You sure you wanted this to be part of the commit message? ;)

> ---
>  cmd/bootefi.c | 49 +++++++++++++++++++++++++++++++++----------------
>  cmd/bootefi.h |  3 +++
>  2 files changed, 36 insertions(+), 16 deletions(-)
>  create mode 100644 cmd/bootefi.h
> 
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 3ebae1cdad08..796ca6ee69ec 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -279,6 +279,31 @@ static void bootefi_run_finish(struct efi_loaded_image_obj *image_obj,
>  	efi_delete_handle(&image_obj->header);
>  }
>  
> +int efi_handle_fdt(char *fdt_opt)
> +{
> +	unsigned long fdt_addr;
> +	efi_status_t r;
> +
> +	if (fdt_opt) {
> +		fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
> +		if (!fdt_addr && *fdt_opt != '0')
> +			return CMD_RET_USAGE;
> +
> +		/* Install device tree */
> +		r = efi_install_fdt(fdt_addr);
> +		if (r != EFI_SUCCESS) {
> +			printf("ERROR: failed to install device tree\n");
> +			return CMD_RET_FAILURE;
> +		}
> +	} else {
> +		/* Remove device tree. EFI_NOT_FOUND can be ignored here */
> +		efi_install_configuration_table(&efi_guid_fdt, NULL);
> +		printf("WARNING: booting without device tree\n");
> +	}
> +
> +	return CMD_RET_SUCCESS;
> +}
> +
>  /**
>   * do_bootefi_exec() - execute EFI binary
>   *
> @@ -473,7 +498,6 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  	unsigned long addr;
>  	char *saddr;
>  	efi_status_t r;
> -	unsigned long fdt_addr;
>  
>  	/* Allow unaligned memory access */
>  	allow_unaligned();
> @@ -489,21 +513,6 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  	if (argc < 2)
>  		return CMD_RET_USAGE;
>  
> -	if (argc > 2) {
> -		fdt_addr = simple_strtoul(argv[2], NULL, 16);
> -		if (!fdt_addr && *argv[2] != '0')
> -			return CMD_RET_USAGE;
> -		/* Install device tree */
> -		r = efi_install_fdt(fdt_addr);
> -		if (r != EFI_SUCCESS) {
> -			printf("ERROR: failed to install device tree\n");
> -			return CMD_RET_FAILURE;
> -		}
> -	} else {
> -		/* Remove device tree. EFI_NOT_FOUND can be ignored here */
> -		efi_install_configuration_table(&efi_guid_fdt, NULL);
> -		printf("WARNING: booting without device tree\n");
> -	}
>  #ifdef CONFIG_CMD_BOOTEFI_HELLO
>  	if (!strcmp(argv[1], "hello")) {
>  		ulong size = __efi_helloworld_end - __efi_helloworld_begin;
> @@ -521,6 +530,9 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  		struct efi_loaded_image_obj *image_obj;
>  		struct efi_loaded_image *loaded_image_info;
>  
> +		if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
> +			return CMD_RET_FAILURE;
> +
>  		if (bootefi_test_prepare(&image_obj, &loaded_image_info,
>  					 "\\selftest", (uintptr_t)&efi_selftest,
>  					 "efi_selftest"))
> @@ -533,6 +545,9 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  	} else
>  #endif
>  	if (!strcmp(argv[1], "bootmgr")) {
> +		if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
> +			return CMD_RET_FAILURE;
> +
>  		return do_bootefi_bootmgr_exec();
>  	} else {
>  		saddr = argv[1];
> @@ -542,6 +557,8 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  		if (!addr && *saddr != '0')
>  			return CMD_RET_USAGE;
>  
> +		if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
> +			return CMD_RET_FAILURE;
>  	}
>  
>  	printf("## Starting EFI application at %08lx ...\n", addr);
> diff --git a/cmd/bootefi.h b/cmd/bootefi.h
> new file mode 100644
> index 000000000000..4e11ab1211cb
> --- /dev/null
> +++ b/cmd/bootefi.h
> @@ -0,0 +1,3 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */

This should be a separate patch.

> +
> +int efi_handle_fdt(char *fdt_opt);
>