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haswell: add multipurpose SMM memory region

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The SMM region is available for multipurpose use before the SMM
handler is relocated. Provide a configurable sized region in the
TSEG for use before the SMM handler is relocated. This feature is
implemented by making the reserved size a Kconfig option. Also
make the IED region a Kconfig option as well. Lastly add some sanity
checking on the Kconfig options.

Change-Id: Idd7fccf925a8787146906ac766b7878845c75935
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2804
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Aaron Durbin
2013-02-15 21:45:06 -06:00
committed by Ronald G. Minnich
parent 67481ddc2e
commit 8ce667e506
4 changed files with 33 additions and 2 deletions
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3
src/cpu/intel/haswell/smmrelocate.c
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@@ -258,6 +258,9 @@ static void fill_in_relocation_params(device_t dev,
params->ied_base = tsegmb + params->smram_size;
params->ied_size = tseg_size - params->smram_size;
/* Adjust available SMM handler memory size. */
params->smram_size -= RESERVED_SMM_SIZE;
/* SMRR has 32-bits of valid address aligned to 4KiB. */
params->smrr_base.lo = (params->smram_base & rmask) | MTRR_TYPE_WRBACK;
params->smrr_base.hi = 0;