[U-Boot] [PATCH v2 00/47] Add support for running U-Boot as an EFI payload/application
Simon Glass
sjg at chromium.org
Fri Jul 31 17:31:17 CEST 2015
This series allows U-Boot to be build as an EFI payload so that U-Boot
can be started on almost any x86 platform that supports EFI. This is
implemented as a stub which EFI can load plus a payload that is copied
to RAM. The payload contains a normal U-Boot binary image and device tree.
This allows U-Boot to run on platforms that have EFI support but are not
supported natively by U-Boot. It also allows testing and fiddling with the
board using U-Boots memory display and other commands.
In addition, U-Boot can be built as an EFI application. This should work
regardless of the board type since it only relies on EFI services. However
only 32-bit EFI is supported in this case. Again it can be used to snoop
around the platform.
A README provides further details of how this series operates.
Changes in v2:
- Add -no-red-zone for 64-bit only
- Add ALIGN() before .dynamic in the linker script
- Add a blank line before return in the _relocate() function
- Add a comment about special handling for backspace
- Add a comment about the REX prefix
- Add a comment as to where LDFLAGS_EFI is used
- Add a comment as to why .hash has to be first in the linker script
- Add a comment as to why debug_uart_init() is empty
- Add a comment as to why interrupt_init() must be skipped for EFI
- Add a comment as to why the AFLAGS_REMOVE_.. lines are needed
- Add a comment as to why we must call exit_boot_services() twice
- Add a comment as to why we only allocate pages below 4GB
- Add a comment as to why we use global_data_ptr
- Add a marker for the cold reset entry point
- Add a note that bootm does not work when running as an EFI app
- Add comments as to why we need efi_memset(), efi_putc(), efi_puts()
- Add descriptor bits for the base and limit
- Add new patch to reserve the top 16 flag bits for architecture-specific use
- Avoid useless u64 cast on EFI_RUNTIME_SERVICES_SIGNATURE
- Change 'link script' to 'linker script'
- Check the GDT selector's base and limit against the target address
- Correct the return code to avoid a test failure
- Drop . = 0x0;
- Drop \n\t at the end of a one-line asm statement
- Drop __packed from struct efi_device_path
- Drop a left-over debug printf()
- Drop duplicate OBJCOPYFLAGS_EFI
- Drop no-red-zone as it is not needed for i386
- Drop patch "Add a link script entry for U-Boot as a payload"
- Drop the REX prefix in 32-bit mode
- Drop unnecessary .section .text
- Drop unnecessary SYS_CAR_ADDR/SIZE Kconfig options
- Drop unneeded include of asm/ptrace.h
- Drop unused DECLARE_GLOBAL_DATA_INIT
- Drop unused DECLARE_GLOBAL_DATA_PTR
- Drop unused board_eth_init()
- Drop use of CONFIG_X86_64 since we don't support a 64-bit EFI application yet
- Explain in a comment how the debug UART is implemented for the EFI app
- Fix 'command problem' typo - it should say 'command prompt'
- Fix 'withU-Boot.' typo
- Fix _aligned() typo
- Fix a few comment typos
- Fix alignment of region index field in the output
- Fix comment style
- Fix efi_mem_desc_VERSION typo
- Fix indenting in board/emulation/qemu-x86/Kconfig
- Fix indenting in board/intel/minnowmax/Kconfig
- Fix mention of CHAR16 which should be wchar_t
- Fix missing struct comments
- Fix reference to elf_ia32_efi instead of elf_x86_64_efi
- Fix spacing around operators
- Fix text alignment in Kconfig files
- Follow existing file conventions for type definitions
- Merge in Bin's implementation of adding a U-Boot payload with objcopy
- Move 64-bit crt0 to a later patch
- Move EFI CAR settings to arch/x86/lib/efi/Kconfig
- Move crt0 and reloc files into arch/x86/lib/efi/
- Move the 64-bit crt and reloc code into this patch
- Move the 64-bit efi.h additions into this patch
- Move the 64-bit payload code to a later patch
- Move the crt and reloc files into arch/x86/lib/efi/
- Move this patch to before the EFI start-up code patch
- Output the region index in decimal
- Refer to FS as F segment register instead of frame segment register
- Remove CONFIG_SYS_EARLY_PCI_INIT and CONFIG_PCI_PNP
- Remove KEEP in the EFI linker script since garbage collection is not enabled
- Remove comment about reset_cpu() returning to EFI in the stub
- Remove extraneous '+' in comment
- Remove superfluous Kconfig options
- Rename CONFIG_ARCH_EFI to CONFIG_EFI_APP
- Rename CONFIG_DEBUG_UART_EFI to CONFIG_DEBUG_EFI_CONSOLE
- Rename EFI debug UART to EFI_CONSOLE
- Rename GDT_4GB to GDT_4KB
- Rename ImageBase to image_base
- Reorder this patch to after CONFIG_EFI_APP is introduced
- Replace 'Coreboot' with 'coreboot'
- Replace serial_s5p with serial_efi
- Return early in copy_uboot_to_ram() and clear_bbs() when relocation disabled
- Reword the efi_putc() unicode comment to make more sense
- Set text_base to 0 to avoid possible compiler warning
- Update based on the elf.h changes
- Use "efi,app" instead of "efi,payload" for the compatible string
- Use CONFIG_EFI_APP instead of CONFIG_ARCH_EFI
- Use SPDX for the EFI start and relocation code
- Use image_base instead of ImageBase
- Use one-line comments when appropriate
- Use reserved instead of __reserved in struct efi_boot_services
- Use the now-defined top 16-bits of the global_data flags
- Use toolchain instead of tool chain
- Use u-boot-app.efi instead of u-boot.efi
- Zero BIST when starting from EFI/coreboot
Ben Stoltz (6):
efi: Avoid using non-existent text base
efi: Drop CONFIG_SYS_TEXT_BASE for EFI
x86: Set up toolchain flags for running as EFI application
x86: Add support for U-Boot as an EFI application
x86: Add EFI board code
x86: Add definitions for the x86-efi board and plumb it in
Simon Glass (41):
Support removing default assembler flags
dm: core: Check for empty list in uclass_find_device()
dm: serial: Correct logic in serial_find_console_or_panic()
elf: Add a few definitions for 64-bit relocation
Add a way to skip relocation
Allow objcopy to work without filling gaps with 0xff
Bring in __aligned_u64 and friends to linux/types.h
x86: Add various minor tidy-ups to the 32-bit startup code
x86: Use CR0 constants in CPU init
Reserve the top 16 flag bits for architecture-specific use
x86: Tidy up global_data flags
x86: Drop unused copy_fdt_to_ram()
x86: Tidy up the 64-bit calling code
x86: Add some missing global_data declarations in files that use gd
x86: Tidy up a few minor issues with interrupts
pci: Use debug() instead of DEBUGF() in pci_auto.c
pci: Fix up code for CONFIG_PCI_ENUM_ONLY
x86: Allow use of global_data with EFI
efi: Add start-up library code
efi: Display the correct initcall pre-relocation values
efi: Add a serial driver
efi: Support building a u-boot.efi executable
x86: Support skipping relocation for EFI
x86: Add asm/elf.h for x86-specific ELF definitions
x86: dts: Add a device tree file for EFI
x86: Allow relocation code to build without text base
x86: Add relocation and link script for a 64-bit EFI application
efi: Add support for loading U-Boot through an EFI stub
x86: Support building the EFI stub
x86: Add an enum for some commonly-used GDT bits
x86: Add a way to call 32-bit code from 64-bit mode
efi: Add 64-bit payload support
x86: Add support for passing tables into U-Boot
efi: Add functions for decoding the EFI tables
efi: Add a command to display the memory map
x86: Handle running as EFI payload
x86: Add helper code for running from EFI
x86: baytrail: Support operation as an EFI payload
x86: qemu: Support operation as an EFI payload
x86: Gracefully disable the vesa driver when running from EFI
efi: Add a README to explain how things work
Kconfig | 1 +
Makefile | 34 +++-
arch/x86/Kconfig | 10 +
arch/x86/Makefile | 2 +
arch/x86/config.mk | 48 ++++-
arch/x86/cpu/Makefile | 7 +
arch/x86/cpu/baytrail/Kconfig | 2 +-
arch/x86/cpu/baytrail/cpu.c | 2 +
arch/x86/cpu/baytrail/valleyview.c | 2 +
arch/x86/cpu/call32.S | 64 ++++++
arch/x86/cpu/call64.S | 4 +-
arch/x86/cpu/cpu.c | 23 ++-
arch/x86/cpu/efi/Makefile | 8 +
arch/x86/cpu/efi/efi.c | 42 ++++
arch/x86/cpu/efi/elf_ia32_efi.lds | 94 +++++++++
arch/x86/cpu/efi/elf_x86_64_efi.lds | 83 ++++++++
arch/x86/cpu/efi/sdram.c | 29 +++
arch/x86/cpu/interrupts.c | 25 ++-
arch/x86/cpu/mp_init.c | 2 +
arch/x86/cpu/qemu/Makefile | 5 +-
arch/x86/cpu/qemu/qemu.c | 2 +
arch/x86/cpu/start.S | 73 ++++---
arch/x86/dts/Makefile | 1 +
arch/x86/dts/efi.dts | 22 +++
arch/x86/include/asm/arch-efi/gpio.h | 10 +
arch/x86/include/asm/cpu.h | 27 +++
arch/x86/include/asm/elf.h | 46 +++++
arch/x86/include/asm/fsp/fsp_hob.h | 59 +-----
arch/x86/include/asm/global_data.h | 16 +-
arch/x86/include/asm/relocate.h | 1 -
arch/x86/include/asm/types.h | 5 +-
arch/x86/lib/Makefile | 3 +-
arch/x86/lib/asm-offsets.c | 1 +
arch/x86/lib/bootm.c | 7 +
arch/x86/lib/efi/Kconfig | 11 ++
arch/x86/lib/efi/Makefile | 27 +++
arch/x86/lib/efi/car.S | 10 +
arch/x86/lib/efi/crt0-efi-ia32.S | 52 +++++
arch/x86/lib/efi/crt0-efi-x86_64.S | 51 +++++
arch/x86/lib/efi/efi.c | 151 ++++++++++++++
arch/x86/lib/efi/reloc_ia32.c | 72 +++++++
arch/x86/lib/efi/reloc_x86_64.c | 66 +++++++
arch/x86/lib/fsp/fsp_common.c | 2 +
arch/x86/lib/lpc-uclass.c | 2 +
arch/x86/lib/pch-uclass.c | 2 +
arch/x86/lib/relocate.c | 41 ++--
board/efi/Kconfig | 19 ++
board/efi/efi-x86/Kconfig | 15 ++
board/efi/efi-x86/MAINTAINERS | 6 +
board/efi/efi-x86/Makefile | 7 +
board/efi/efi-x86/efi.c | 18 ++
board/emulation/qemu-x86/Kconfig | 5 +-
board/intel/minnowmax/Kconfig | 5 +-
common/Makefile | 1 +
common/board_f.c | 14 +-
common/cmd_efi.c | 257 ++++++++++++++++++++++++
config.mk | 2 -
configs/efi-x86_defconfig | 16 ++
doc/README.efi | 237 ++++++++++++++++++++++
drivers/core/uclass.c | 2 +
drivers/gpio/intel_ich6_gpio.c | 2 +
drivers/pci/pci_auto.c | 52 ++---
drivers/serial/Kconfig | 9 +
drivers/serial/Makefile | 1 +
drivers/serial/serial-uclass.c | 2 +-
drivers/serial/serial_efi.c | 157 +++++++++++++++
drivers/video/vesa_fb.c | 8 +
include/asm-generic/global_data.h | 3 +-
include/common.h | 7 +
include/configs/efi-x86.h | 34 ++++
include/efi.h | 368 +++++++++++++++++++++++++++++++++++
include/efi_api.h | 244 +++++++++++++++++++++++
include/elf.h | 26 +++
include/linux/types.h | 6 +-
include/part_efi.h | 9 +-
lib/Kconfig | 2 +
lib/Makefile | 1 +
lib/efi/Kconfig | 54 +++++
lib/efi/Makefile | 17 ++
lib/efi/efi.c | 101 ++++++++++
lib/efi/efi_app.c | 139 +++++++++++++
lib/efi/efi_info.c | 47 +++++
lib/efi/efi_stub.c | 363 ++++++++++++++++++++++++++++++++++
lib/initcall.c | 4 +
scripts/Makefile.lib | 3 +-
85 files changed, 3329 insertions(+), 181 deletions(-)
create mode 100644 arch/x86/cpu/call32.S
create mode 100644 arch/x86/cpu/efi/Makefile
create mode 100644 arch/x86/cpu/efi/efi.c
create mode 100644 arch/x86/cpu/efi/elf_ia32_efi.lds
create mode 100644 arch/x86/cpu/efi/elf_x86_64_efi.lds
create mode 100644 arch/x86/cpu/efi/sdram.c
create mode 100644 arch/x86/dts/efi.dts
create mode 100644 arch/x86/include/asm/arch-efi/gpio.h
create mode 100644 arch/x86/include/asm/elf.h
create mode 100644 arch/x86/lib/efi/Kconfig
create mode 100644 arch/x86/lib/efi/Makefile
create mode 100644 arch/x86/lib/efi/car.S
create mode 100644 arch/x86/lib/efi/crt0-efi-ia32.S
create mode 100644 arch/x86/lib/efi/crt0-efi-x86_64.S
create mode 100644 arch/x86/lib/efi/efi.c
create mode 100644 arch/x86/lib/efi/reloc_ia32.c
create mode 100644 arch/x86/lib/efi/reloc_x86_64.c
create mode 100644 board/efi/Kconfig
create mode 100644 board/efi/efi-x86/Kconfig
create mode 100644 board/efi/efi-x86/MAINTAINERS
create mode 100644 board/efi/efi-x86/Makefile
create mode 100644 board/efi/efi-x86/efi.c
create mode 100644 common/cmd_efi.c
create mode 100644 configs/efi-x86_defconfig
create mode 100644 doc/README.efi
create mode 100644 drivers/serial/serial_efi.c
create mode 100644 include/configs/efi-x86.h
create mode 100644 include/efi.h
create mode 100644 include/efi_api.h
create mode 100644 lib/efi/Kconfig
create mode 100644 lib/efi/Makefile
create mode 100644 lib/efi/efi.c
create mode 100644 lib/efi/efi_app.c
create mode 100644 lib/efi/efi_info.c
create mode 100644 lib/efi/efi_stub.c
--
2.5.0.rc2.392.g76e840b
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