path: root/Makefile
diff options
authorSimon Glass <>2015-08-15 14:37:53 -0600
committerSimon Glass <>2015-08-26 07:54:10 -0700
commitb098032387a6ba1cab181a897075932f7fa2a58d (patch)
tree222ab19bab366cb0ceabff655f27a3f32a83d037 /Makefile
parent88cf322e44b85a0e17ce5a5514eff85e7df78dc6 (diff)
x86: ifdtool: Support collating microcode into one place
The Intel Firmware Support Package (FSP) requires that microcode be provided very early before the device tree can be scanned. We already support adding a pointer to the microcode data in a place where early init code can access. However this just points into the device tree and can only point to a single lot of microcode. For boards which may have different CPU types we must support multiple microcodes and pass all of them to the FSP in one place. Enhance ifdtool to scan all the microcode, place it together in the ROM and update the microcode pointer to point there. This allows us to pass multiple microcode blocks to the FSP using its existing API. Enable the flag in the Makefile so that this feature is used by default for all boards. Signed-off-by: Simon Glass <> Reviewed-by: Bin Meng <> Tested-by: Bin Meng <>
Diffstat (limited to 'Makefile')
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 9919314f0a..7b8efea231 100644
--- a/Makefile
+++ b/Makefile
@@ -1040,6 +1040,7 @@ IFDTOOL_FLAGS = -f 0:$(objtree)/u-boot.dtb
IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot.bin
IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
IFDTOOL_ME_FLAGS = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
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