mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
f2bfa0cb17
Enable the bootflow based on this bootmeth if the BootOrder EFI variable is set. Signed-off-by: Mark Kettenis <kettenis@openbsd.org> Reviewed-by: Simon Glass <sjg@chromium.org>
122 lines
2.5 KiB
C
122 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Bootmethod for EFI boot manager
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*
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* Copyright 2021 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#define LOG_CATEGORY UCLASS_BOOTSTD
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#include <common.h>
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#include <bootdev.h>
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#include <bootflow.h>
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#include <bootmeth.h>
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#include <command.h>
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#include <dm.h>
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#include <efi_loader.h>
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#include <efi_variable.h>
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/**
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* struct efi_mgr_priv - private info for the efi-mgr driver
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*
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* @fake_bootflow: Fake a valid bootflow for testing
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*/
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struct efi_mgr_priv {
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bool fake_dev;
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};
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void sandbox_set_fake_efi_mgr_dev(struct udevice *dev, bool fake_dev)
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{
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struct efi_mgr_priv *priv = dev_get_priv(dev);
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priv->fake_dev = fake_dev;
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}
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static int efi_mgr_check(struct udevice *dev, struct bootflow_iter *iter)
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{
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int ret;
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/* Must be an bootstd device */
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ret = bootflow_iter_check_system(iter);
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if (ret)
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return log_msg_ret("net", ret);
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return 0;
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}
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static int efi_mgr_read_bootflow(struct udevice *dev, struct bootflow *bflow)
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{
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struct efi_mgr_priv *priv = dev_get_priv(dev);
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efi_status_t ret;
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efi_uintn_t size;
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u16 *bootorder;
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if (priv->fake_dev) {
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bflow->state = BOOTFLOWST_READY;
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return 0;
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}
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ret = efi_init_obj_list();
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if (ret)
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return log_msg_ret("init", ret);
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/* Enable this method if the "BootOrder" UEFI exists. */
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bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid,
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&size);
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if (bootorder) {
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bflow->state = BOOTFLOWST_READY;
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return 0;
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}
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return -EINVAL;
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}
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static int efi_mgr_read_file(struct udevice *dev, struct bootflow *bflow,
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const char *file_path, ulong addr, ulong *sizep)
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{
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/* Files are loaded by the 'bootefi bootmgr' command */
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return -ENOSYS;
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}
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static int efi_mgr_boot(struct udevice *dev, struct bootflow *bflow)
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{
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int ret;
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/* Booting is handled by the 'bootefi bootmgr' command */
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ret = run_command("bootefi bootmgr", 0);
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return 0;
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}
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static int bootmeth_efi_mgr_bind(struct udevice *dev)
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{
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struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
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plat->desc = "EFI bootmgr flow";
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plat->flags = BOOTMETHF_GLOBAL;
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return 0;
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}
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static struct bootmeth_ops efi_mgr_bootmeth_ops = {
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.check = efi_mgr_check,
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.read_bootflow = efi_mgr_read_bootflow,
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.read_file = efi_mgr_read_file,
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.boot = efi_mgr_boot,
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};
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static const struct udevice_id efi_mgr_bootmeth_ids[] = {
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{ .compatible = "u-boot,efi-bootmgr" },
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{ }
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};
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U_BOOT_DRIVER(bootmeth_efi_mgr) = {
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.name = "bootmeth_efi_mgr",
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.id = UCLASS_BOOTMETH,
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.of_match = efi_mgr_bootmeth_ids,
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.ops = &efi_mgr_bootmeth_ops,
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.bind = bootmeth_efi_mgr_bind,
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.priv_auto = sizeof(struct efi_mgr_priv),
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};
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