diff options
author | Simon Glass <sjg@chromium.org> | 2022-04-25 08:31:19 +0300 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2022-04-25 17:00:04 +0300 |
commit | 0b41525e8f5453220e8c78a763a5879e73e6b825 (patch) | |
tree | 290fb9dd2f2f9d3bef751e9ab9cf90cfe317028a | |
parent | a080b98981a74e96ef2ff6b4de36b222fe42b8e5 (diff) | |
download | u-boot-0b41525e8f5453220e8c78a763a5879e73e6b825.tar.xz |
bootstd: Add an implementation of EFI bootmgr
Add a bootmeth driver which handles EFI boot manager, using EFI_LOADER.
In effect, this provides the same functionality as the 'bootefi bootmgr'
command and shares the same code. But the interface into it is via a
bootmeth, so it does not require any special scripts, etc.
For now this requires the 'bootefi' command be enabled. Future work may
tidy this up so that it can be used without CONFIG_CMDLINE being enabled.
Signed-off-by: Simon Glass <sjg@chromium.org>
-rw-r--r-- | boot/Makefile | 3 | ||||
-rw-r--r-- | boot/bootmeth_efi_mgr.c | 86 |
2 files changed, 89 insertions, 0 deletions
diff --git a/boot/Makefile b/boot/Makefile index 7325dbc1dd..fe221d7f44 100644 --- a/boot/Makefile +++ b/boot/Makefile @@ -27,6 +27,9 @@ obj-$(CONFIG_$(SPL_TPL_)BOOTSTD) += bootstd-uclass.o obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_DISTRO) += bootmeth_distro.o obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_DISTRO_PXE) += bootmeth_pxe.o obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_EFILOADER) += bootmeth_efi.o +ifdef CONFIG_$(SPL_TPL_)BOOTSTD_FULL +obj-$(CONFIG_$(SPL_TPL_)CMD_BOOTEFI_BOOTMGR) += bootmeth_efi_mgr.o +endif obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += image-fdt.o obj-$(CONFIG_$(SPL_TPL_)FIT_SIGNATURE) += fdt_region.o diff --git a/boot/bootmeth_efi_mgr.c b/boot/bootmeth_efi_mgr.c new file mode 100644 index 0000000000..a6914466db --- /dev/null +++ b/boot/bootmeth_efi_mgr.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Bootmethod for EFI boot manager + * + * Copyright 2021 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#define LOG_CATEGORY UCLASS_BOOTSTD + +#include <common.h> +#include <bootdev.h> +#include <bootflow.h> +#include <bootmeth.h> +#include <command.h> +#include <dm.h> + +static int efi_mgr_check(struct udevice *dev, struct bootflow_iter *iter) +{ + int ret; + + /* Must be an bootstd device */ + ret = bootflow_iter_uses_system(iter); + if (ret) + return log_msg_ret("net", ret); + + return 0; +} + +static int efi_mgr_read_bootflow(struct udevice *dev, struct bootflow *bflow) +{ + /* + * Just assume there is something to boot since we don't have any way + * of knowing in advance + */ + bflow->state = BOOTFLOWST_READY; + + return 0; +} + +static int efi_mgr_read_file(struct udevice *dev, struct bootflow *bflow, + const char *file_path, ulong addr, ulong *sizep) +{ + /* Files are loaded by the 'bootefi bootmgr' command */ + + return -ENOSYS; +} + +static int efi_mgr_boot(struct udevice *dev, struct bootflow *bflow) +{ + int ret; + + /* Booting is handled by the 'bootefi bootmgr' command */ + ret = run_command("bootefi bootmgr", 0); + + return 0; +} + +static int bootmeth_efi_mgr_bind(struct udevice *dev) +{ + struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev); + + plat->desc = "EFI bootmgr flow"; + + return 0; +} + +static struct bootmeth_ops efi_mgr_bootmeth_ops = { + .check = efi_mgr_check, + .read_bootflow = efi_mgr_read_bootflow, + .read_file = efi_mgr_read_file, + .boot = efi_mgr_boot, +}; + +static const struct udevice_id efi_mgr_bootmeth_ids[] = { + { .compatible = "u-boot,efi-bootmgr" }, + { } +}; + +U_BOOT_DRIVER(bootmeth_zefi_mgr) = { + .name = "bootmeth_efi_mgr", + .id = UCLASS_BOOTMETH, + .of_match = efi_mgr_bootmeth_ids, + .ops = &efi_mgr_bootmeth_ops, + .bind = bootmeth_efi_mgr_bind, +}; |