the following patch was just integrated into master: commit 3ad63565a54f5ea3cdd866cbc6c70c67ad2757fe Author: Rizwan Qureshi rizwan.qureshi@intel.com Date: Sun Aug 14 15:48:33 2016 +0530
soc/intel/skylake: Correct Cache as ram size
DCACHE_RAM_SIZE_TOTAL is set to 0x40000 and is being used to set up CAR. Whereas DCACHE_RAM_SIZE which is set to 0x10000 is used to calculate the _car_region_end in car.ld. If the FSP CAR requirement is greater than or even close to DCACHE_RAM_SIZE then, the CAR region for FSP will be determined to be below the overall CAR region boundary i.e, out of CAR memory range.
This is working with FSP 1.1 because we provide the FspCarSize and FspCarBase explicitly in a UPD. Hence, FSP is still able to use the upper region of CAR memory for its purpose. However, it will be a problem in case of FSP2.0 where FSP usable CAR is calculated using _car_region_end.
So, Remove the the use of DCACHE_RAM_SIZE_TOTAL and set DCACHE_RAM_SIZE to correct value i.e, 0x40000(256KB)
Change-Id: Ie2cb8bb0705a37edb3414850d7659f8a3dd6958b Signed-off-by: Rizwan Qureshi rizwan.qureshi@intel.com Reviewed-on: https://review.coreboot.org/16236 Reviewed-by: Martin Roth martinroth@google.com Tested-by: build bot (Jenkins)
See https://review.coreboot.org/16236 for details.
-gerrit