mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-13 16:37:30 +00:00
4e65ca00f3
Under the current implementation, booting from removable media using
a architecture-specific default image name, say BOOTAA64.EFI, is
supported only in distro_bootcmd script. See the commit 74522c898b
("efi_loader: Add distro boot script for removable media").
This is, however, half-baked implementation because
1) UEFI specification requires this feature to be implemented as part
of Boot Manager's responsibility:
3 - Boot Manager
3.5.1 Boot via the Simple File Protocol
When booting via the EFI_SIMPLE_FILE_SYSTEM_PROTOCOL, the FilePath will
start with a device path that points to the device that implements the
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL or the EFI_BLOCK_IO_PROTOCOL. The next
part of the FilePath may point to the file name, including
subdirectories, which contain the bootable image. If the file name is
a null device path, the file name must be generated from the rules
defined below.
...
3.5.1.1 Removable Media Boot Behavior
To generate a file name when none is present in the FilePath, the
firmware must append a default file name in the form
\EFI\BOOT\BOOT{machine type short-name}.EFI ...
2) So (1) entails the hehavior that the user's preference of boot media
order should be determined by Boot#### and BootOrder variables.
With this patch, the semantics mentioned above is fully implemented.
For example, if you want to boot the system from USB and SCSI in this
order,
* define Boot0001 which contains only a device path to the USB device
(without any file path/name)
* define Boot0002 which contains only a device path to the SCSI device,
and
* set BootOrder to Boot0001:Boot0002
To avoid build error for sandbox, default file name "BOOTSANDBOX.efi"
is defined even if it is out of scope of UEFI specification.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
On sandbox use binary name corresponding to host architecture.
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
45 lines
948 B
C
45 lines
948 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* When a boot option does not provide a file path the EFI file to be
|
|
* booted is \EFI\BOOT\$(BOOTEFI_NAME).EFI. The architecture specific
|
|
* file name is defined in this include.
|
|
*
|
|
* Copyright (c) 2022, Heinrich Schuchardt <xypron.glpk@gmx.de>
|
|
*/
|
|
|
|
#ifndef _EFI_DEFAULT_FILENAME_H
|
|
#define _EFI_DEFAULT_FILENAME_H
|
|
|
|
#include <host_arch.h>
|
|
|
|
#undef BOOTEFI_NAME
|
|
|
|
#if HOST_ARCH == HOST_ARCH_X86_64
|
|
#define BOOTEFI_NAME "BOOTX64.EFI"
|
|
#endif
|
|
|
|
#if HOST_ARCH == HOST_ARCH_X86
|
|
#define BOOTEFI_NAME "BOOTIA32.EFI"
|
|
#endif
|
|
|
|
#if HOST_ARCH == HOST_ARCH_AARCH64
|
|
#define BOOTEFI_NAME "BOOTAA64.EFI"
|
|
#endif
|
|
|
|
#if HOST_ARCH == HOST_ARCH_ARM
|
|
#define BOOTEFI_NAME "BOOTARM.EFI"
|
|
#endif
|
|
|
|
#if HOST_ARCH == HOST_ARCH_RISCV32
|
|
#define BOOTEFI_NAME "BOOTRISCV32.EFI"
|
|
#endif
|
|
|
|
#if HOST_ARCH == HOST_ARCH_RISCV64
|
|
#define BOOTEFI_NAME "BOOTRISCV64.EFI"
|
|
#endif
|
|
|
|
#ifndef BOOTEFI_NAME
|
|
#error Unsupported UEFI architecture
|
|
#endif
|
|
|
|
#endif
|