mirror of
https://github.com/Fishwaldo/u-boot.git
synced 2025-03-16 12:11:32 +00:00
x86: Add an option to enabling building a ROM file
Rather than requiring the Makefile to be modified, provide a build option to enable the ROM to be built. We cannot do this by default since it requires binary blobs. Without these the build will fail. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
parent
316328f59d
commit
eea0f11278
2 changed files with 9 additions and 6 deletions
5
Makefile
5
Makefile
|
@ -729,8 +729,9 @@ ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
|
|||
endif
|
||||
ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
|
||||
|
||||
# We can't do this yet due to the need for binary blobs
|
||||
# ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
|
||||
ifneq ($(BUILD_ROM),)
|
||||
ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
|
||||
endif
|
||||
|
||||
# enable combined SPL/u-boot/dtb rules for tegra
|
||||
ifneq ($(CONFIG_TEGRA),)
|
||||
|
|
|
@ -51,9 +51,11 @@ Building ROM version of U-Boot (hereafter referred to as u-boot.rom) is a
|
|||
little bit tricky, as generally it requires several binary blobs which are not
|
||||
shipped in the U-Boot source tree. Due to this reason, the u-boot.rom build is
|
||||
not turned on by default in the U-Boot source tree. Firstly, you need turn it
|
||||
on by uncommenting the following line in the main U-Boot Makefile:
|
||||
on by enabling the ROM build:
|
||||
|
||||
# ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
|
||||
$ export BUILD_ROM=y
|
||||
|
||||
This tells the Makefile to build u-boot.rom as a target.
|
||||
|
||||
Link-specific instructions:
|
||||
|
||||
|
@ -126,11 +128,11 @@ Make sure 0x1110000 matches CONFIG_SYS_TEXT_BASE and 0x1110015 matches the
|
|||
symbol address of _start (in arch/x86/cpu/start.S).
|
||||
|
||||
If you want to use ELF as the coreboot payload, change U-Boot configuration to
|
||||
use CONFIG_OF_EMBED.
|
||||
use CONFIG_OF_EMBED instead of CONFIG_OF_SEPARATE.
|
||||
|
||||
CPU Microcode
|
||||
-------------
|
||||
Modern CPU usually requires a special bit stream called microcode [5] to be
|
||||
Modern CPUs usually require a special bit stream called microcode [5] to be
|
||||
loaded on the processor after power up in order to function properly. U-Boot
|
||||
has already integrated these as hex dumps in the source tree.
|
||||
|
||||
|
|
Loading…
Add table
Reference in a new issue