It is a requirement for Firmware to have Firmware Interface Table (FIT),
which contains pointers to each microcode update.
The microcode update is loaded for all logical processors before reset vector.
FSPT_UPD.MicrocodeRegionBase and FSPT_UPD.MicrocodeRegionLength are
input parameters to TempRamInit API.
If these values are 0, FSP will not attempt to update microcode.
Since Gen-4 all IA-SoC has FIT loading ucode even before cpu reset in place
hence skipping FSP-T loading ucode after CPU reset options.
Also removed unused kconfig CONFIG_CPU_MICROCODE_CBFS_LOC and
CONFIG_CPU_MICROCODE_CBFS_LEN
Change-Id: I3a406fa0e2e62e3363c2960e173dc5f5f5ca0455
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37187
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: David Guckian
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch adds following changes,
- APL, CFL, DENVERTON soc's using same implementation to setup and
teardown FSP CAR. Hence cache_as_ram_fsp.S from soc folder is
cosolidated into one file and moved to common code CPU car folder.
- exit_car_fsp.S is from APL, DNV soc folder is clubbed into one file
and moved to common CPU car.
- The new file apollolake/fspcar.c is addded to pass tempraminit
parameters.
- Coffee lake Soc uses FSPT to support Intel Security features like
BootGuard verify boot and Measured boot. Add FSP CAR support for CFL
by programming tempraminit parameters and add FSP_T_XIP default if
FSP_CAR is selected.
BUG= None
TEST= Build for both CFL RVP11 & RVP8 and verified for successful CAR setup.
Build for both leafhill and harcuvar platform by selecting CONFIG_FSP_CAR
without errors.
Change-Id: I98d2dd9711ddc0d7ea7d1672fba700259ee3a3a9
Signed-off-by: Praveen hodagatta pranesh <praveenx.hodagatta.pranesh@intel.com>
Reviewed-on: https://review.coreboot.org/29209
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
