Hi Simon,
On Tue, Jan 27, 2015 at 9:23 AM, Simon Glass wrote:
> 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
> ---
>
> Makefile | 5 +++--
> doc/README.x86 | 10 ++
> 2 files changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index a876f1f..c6e4ad1 100644
> --- a/Makefile
> +++ b/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),)
> diff --git a/doc/README.x86 b/doc/README.x86
> index 7df8cc5..809a291 100644
> --- a/doc/README.x86
> +++ b/doc/README.x86
> @@ -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 board:
the ROM 'board', or 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 0x111 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 requires a special bit stream called microcode [5] to be
I don't understand the changes. 'CPUs requires'?
> 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.
>
> --
Regards,
Bin
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