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cmd: bootefi: carve out fdt handling from do_bootefi()

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This is a preparatory patch for reworking do_bootefi() in later patch.

Carve out a function to handle the installation of the device tree
as a configuration table in system table.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
AKASHI Takahiro 2019-04-19 12:22:29 +09:00 committed by Heinrich Schuchardt
parent defa7b8edd
commit e878e6a7da
1 changed files with 38 additions and 16 deletions
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54
cmd/bootefi.c
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@ -218,6 +218,38 @@ static efi_status_t efi_install_fdt(ulong fdt_addr)
return ret;
}
/**
* efi_process_fdt() - process fdt passed by a command argument
* @fdt_opt: pointer to argument
* Return: status code
*
* If specified, fdt will be installed as configuration table,
* otherwise no fdt will be passed.
*/
static efi_status_t efi_process_fdt(const char *fdt_opt)
{
unsigned long fdt_addr;
efi_status_t ret;
if (fdt_opt) {
fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
if (!fdt_addr && *fdt_opt != '0')
return EFI_INVALID_PARAMETER;
/* Install device tree */
ret = efi_install_fdt(fdt_addr);
if (ret != EFI_SUCCESS) {
printf("ERROR: failed to install device tree\n");
return ret;
}
} else {
/* Remove device tree. EFI_NOT_FOUND can be ignored here */
efi_install_configuration_table(&efi_guid_fdt, NULL);
}
return EFI_SUCCESS;
}
static efi_status_t bootefi_run_prepare(const char *load_options_path,
struct efi_device_path *device_path,
struct efi_device_path *image_path,
@ -407,7 +439,6 @@ 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();
@ -425,21 +456,12 @@ 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");
}
r = efi_process_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;