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efi_loader: make the UEFI boot manager configurable

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Some boards are very tight on the binary size. Booting via UEFI is possible
without using the boot manager.

Provide a configuration option to make the boot manager available.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2021-01-15 19:02:50 +01:00
parent 2363effb7a
commit ff2f532fad
5 changed files with 33 additions and 10 deletions
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13
cmd/bootefi.c
View file

@ -631,10 +631,12 @@ static int do_bootefi(struct cmd_tbl *cmdtp, int flag, int argc,
else if (ret != EFI_SUCCESS)
return CMD_RET_FAILURE;
if (!strcmp(argv[1], "bootmgr"))
return do_efibootmgr();
if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) {
if (!strcmp(argv[1], "bootmgr"))
return do_efibootmgr();
}
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
else if (!strcmp(argv[1], "selftest"))
if (!strcmp(argv[1], "selftest"))
return do_efi_selftest();
#endif
@ -657,11 +659,14 @@ static char bootefi_help_text[] =
" Use environment variable efi_selftest to select a single test.\n"
" Use 'setenv efi_selftest list' to enumerate all tests.\n"
#endif
#ifdef CONFIG_CMD_BOOTEFI_BOOTMGR
"bootefi bootmgr [fdt address]\n"
" - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
"\n"
" If specified, the device tree located at <fdt address> gets\n"
" exposed as EFI configuration table.\n";
" exposed as EFI configuration table.\n"
#endif
;
#endif
U_BOOT_CMD(

8
cmd/efidebug.c
View file

@ -1367,8 +1367,8 @@ static int do_efi_boot_opt(struct cmd_tbl *cmdtp, int flag,
*
* efidebug test bootmgr
*/
static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
int argc, char * const argv[])
static __maybe_unused int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
int argc, char * const argv[])
{
efi_handle_t image;
efi_uintn_t exit_data_size = 0;
@ -1392,8 +1392,10 @@ static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
}
static struct cmd_tbl cmd_efidebug_test_sub[] = {
#ifdef CONFIG_CMD_BOOTEFI_BOOTMGR
U_BOOT_CMD_MKENT(bootmgr, CONFIG_SYS_MAXARGS, 1, do_efi_test_bootmgr,
"", ""),
#endif
};
/**
@ -1581,8 +1583,10 @@ static char efidebug_help_text[] =
" - show UEFI memory map\n"
"efidebug tables\n"
" - show UEFI configuration tables\n"
#ifdef CONFIG_CMD_BOOTEFI_BOOTMGR
"efidebug test bootmgr\n"
" - run simple bootmgr for test\n"
#endif
"efidebug query [-nv][-bs][-rt][-at]\n"
" - show size of UEFI variables store\n";
#endif

12
include/config_distro_bootcmd.h
View file

@ -123,14 +123,20 @@
#endif
#endif
#define BOOTENV_SHARED_EFI \
#ifdef CONFIG_CMD_BOOTEFI_BOOTMGR
#define BOOTENV_EFI_BOOTMGR \
"boot_efi_bootmgr=" \
"if fdt addr ${fdt_addr_r}; then " \
"bootefi bootmgr ${fdt_addr_r};" \
"else " \
"bootefi bootmgr;" \
"fi\0" \
"fi\0"
#else
#define BOOTENV_EFI_BOOTMGR
#endif
#define BOOTENV_SHARED_EFI \
BOOTENV_EFI_BOOTMGR \
\
"boot_efi_binary=" \
"load ${devtype} ${devnum}:${distro_bootpart} " \

8
lib/efi_loader/Kconfig
View file

@ -27,6 +27,14 @@ config EFI_LOADER
if EFI_LOADER
config CMD_BOOTEFI_BOOTMGR
bool "UEFI Boot Manager"
default y
help
Select this option if you want to select the UEFI binary to be booted
via UEFI variables Boot####, BootOrder, and BootNext. This enables the
'bootefi bootmgr' command.
config EFI_SETUP_EARLY
bool
default n

2
lib/efi_loader/Makefile
View file

@ -21,7 +21,7 @@ targets += helloworld.o
endif
obj-$(CONFIG_CMD_BOOTEFI_HELLO) += helloworld_efi.o
obj-y += efi_bootmgr.o
obj-$(CONFIG_CMD_BOOTEFI_BOOTMGR) += efi_bootmgr.o
obj-y += efi_boottime.o
obj-$(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) += efi_capsule.o
obj-$(CONFIG_EFI_CAPSULE_FIRMWARE) += efi_firmware.o