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soc/apollolake: Add initial cache-as-ram setup for bootblock

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This is the minimum setup needed to both get cache-as-ram setup and a
C environment working. On apollolake, we only get 32 KiB of data
loaded into an SRAM that is readonly to the main CPU. Due to this
restriction we have to set CAR and a C environment very early on.

Change-Id: I65c51f972580609d2c1f03dfe2a86bc5d45d1e46
Signed-off-by: Alexandru Gagniuc <alexandrux.gagniuc@intel.com>
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/13301
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Alexandru Gagniuc
2015-10-06 17:16:41 -07:00
committed by Aaron Durbin
parent 9f428137b7
commit dfc2b31517
6 changed files with 205 additions and 0 deletions
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6
src/soc/intel/apollolake/Makefile.inc
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@@ -7,8 +7,14 @@ subdirs-y += ../../../cpu/x86/mtrr
subdirs-y += ../../../cpu/x86/smm
subdirs-y += ../../../cpu/x86/tsc
bootblock-y += bootblock/bootblock.c
bootblock-y += bootblock/cache_as_ram.S
bootblock-y += placeholders.c
romstage-y += placeholders.c
smm-y += placeholders.c
ramstage-y += placeholders.c
CPPFLAGS_common += -I$(src)/soc/intel/apollolake/include
endif