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soc/intel/xeon_sp: Lock down DMICTL 

This is required for CBnT.

Change-Id: I290742c163f5f067c8d529ddca8e2d8572ab6e6a
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47449
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Arthur Heymans 2020-11-11 11:17:30 +01:00 committed by Angel Pons
parent 0f91e9ce5f
commit 051ee4e3ad
1 changed files with 3 additions and 0 deletions
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3
src/soc/intel/xeon_sp/pch.c
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@ -39,6 +39,9 @@ static void soc_config_acpibase(void)
reg32 = (0x3f << 18) | ACPI_BASE_ADDRESS | 1;
pcr_write32(PID_DMI, PCR_DMI_ACPIBA, reg32);
pcr_write32(PID_DMI, PCR_DMI_ACPIBDID, 0x23a8);
reg32 = pcr_read32(PID_DMI, PCR_DMI_DMICTL);
pcr_write32(PID_DMI, PCR_DMI_DMICTL, reg32 | PCR_DMI_DMICTL_SRLOCK);
}
void bootblock_pch_init(void)