[U-Boot] [RFC v3 08/10] cmd: bootefi: carve out do_boot_efi() from do_bootefi()

[Heinrich Schuchardt]

On 4/16/19 6:24 AM, AKASHI Takahiro wrote:
> This is a preparatory patch for reworking do_bootefi() in later patch.
> All the non-boot-manager-based (that is, bootefi <addr>) code is put
> into one function, do_boot_efi().
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>   cmd/bootefi.c | 126 ++++++++++++++++++++++++++++----------------------
>   1 file changed, 70 insertions(+), 56 deletions(-)
>
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 7cc6f0ee5ac8..f14966961b23 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -355,6 +355,75 @@ static int do_efibootmgr(const char *fdt_opt)
>   	return 0;
>   }
>
> +/*
> + * do_boot_efi() - execute EFI binary from command line

Having a function do_boot_efi() and a function do_bootefi() is a bit
confusing. Please, use something different, like efi_do_boot().

Otherwise
Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

> + *
> + * @image_opt:	string of image start address
> + * @fdt_opt:	string of fdt start address
> + * Return:	status code
> + *
> + * Set up memory image for the binary to be loaded, prepare
> + * device path and then call do_bootefi_exec() to execute it.
> + */
> +static int do_boot_efi(const char *image_opt, const char *fdt_opt)
> +{
> +	unsigned long addr;
> +	char *saddr;
> +	efi_status_t ret;
> +	unsigned long fdt_addr;
> +
> +	/* Allow unaligned memory access */
> +	allow_unaligned();
> +
> +	switch_to_non_secure_mode();
> +
> +	/* Initialize EFI drivers */
> +	ret = efi_init_obj_list();
> +	if (ret != EFI_SUCCESS) {
> +		printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
> +		       ret & ~EFI_ERROR_MASK);
> +		return CMD_RET_FAILURE;
> +	}
> +
> +	ret = efi_install_fdt(fdt_opt);
> +	if (ret == EFI_INVALID_PARAMETER)
> +		return CMD_RET_USAGE;
> +	else if (ret != EFI_SUCCESS)
> +		return CMD_RET_FAILURE;
> +
> +#ifdef CONFIG_CMD_BOOTEFI_HELLO
> +	if (!strcmp(argv[1], "hello")) {
> +		ulong size = __efi_helloworld_end - __efi_helloworld_begin;
> +
> +		saddr = env_get("loadaddr");
> +		if (saddr)
> +			addr = simple_strtoul(saddr, NULL, 16);
> +		else
> +			addr = CONFIG_SYS_LOAD_ADDR;
> +		memcpy(map_sysmem(addr, size), __efi_helloworld_begin, size);
> +	} else
> +#endif
> +	{
> +		saddr = argv[1];
> +
> +		addr = simple_strtoul(saddr, NULL, 16);
> +		/* Check that a numeric value was passed */
> +		if (!addr && *saddr != '0')
> +			return CMD_RET_USAGE;
> +	}
> +
> +	printf("## Starting EFI application at %08lx ...\n", addr);
> +	ret = do_bootefi_exec(map_sysmem(addr, 0), bootefi_device_path,
> +			      bootefi_image_path);
> +	printf("## Application terminated, r = %lu\n",
> +	       ret & ~EFI_ERROR_MASK);
> +
> +	if (ret != EFI_SUCCESS)
> +		return CMD_RET_FAILURE;
> +	else
> +		return CMD_RET_SUCCESS;
> +}
> +
>   #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
>   static efi_status_t bootefi_run_prepare(const char *load_options_path,
>   		struct efi_device_path *device_path,
> @@ -483,11 +552,6 @@ static int do_efi_selftest(const char *fdt_opt)
>   /* 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[])
>   {
> -	unsigned long addr;
> -	char *saddr;
> -	efi_status_t r;
> -	unsigned long fdt_addr;
> -
>   	if (argc < 2)
>   		return CMD_RET_USAGE;
>
> @@ -498,57 +562,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>   		return do_efi_selftest(argc > 2 ? argv[2] : NULL);
>   #endif
>
> -	/* Allow unaligned memory access */
> -	allow_unaligned();
> -
> -	switch_to_non_secure_mode();
> -
> -	/* 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;
> -	}
> -
> -	r = fdt_install_fdt(argc > 2 ? argv[2] : NULL);
> -	if (r == EFI_INVALID_PARAMETER)
> -		return CMD_RET_USAGE;
> -	else if (r != EFI_SUCCESS)
> -		return CMD_RET_FAILURE;
> -
> -#ifdef CONFIG_CMD_BOOTEFI_HELLO
> -	if (!strcmp(argv[1], "hello")) {
> -		ulong size = __efi_helloworld_end - __efi_helloworld_begin;
> -
> -		saddr = env_get("loadaddr");
> -		if (saddr)
> -			addr = simple_strtoul(saddr, NULL, 16);
> -		else
> -			addr = CONFIG_SYS_LOAD_ADDR;
> -		memcpy(map_sysmem(addr, size), __efi_helloworld_begin, size);
> -	} else
> -#endif
> -	{
> -		saddr = argv[1];
> -
> -		addr = simple_strtoul(saddr, NULL, 16);
> -		/* Check that a numeric value was passed */
> -		if (!addr && *saddr != '0')
> -			return CMD_RET_USAGE;
> -
> -	}
> -
> -	printf("## Starting EFI application at %08lx ...\n", addr);
> -	r = do_bootefi_exec(map_sysmem(addr, 0), bootefi_device_path,
> -			    bootefi_image_path);
> -	printf("## Application terminated, r = %lu\n",
> -	       r & ~EFI_ERROR_MASK);
> -
> -	if (r != EFI_SUCCESS)
> -		return 1;
> -	else
> -		return 0;
> +	return do_boot_efi(argv[1], argc > 2 ? argv[2] : NULL);
>   }
>
>   #ifdef CONFIG_SYS_LONGHELP
>