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)
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 8c8b1b7..3df4bd7 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -84,7 +84,7 @@
config DCACHE_RAM_SIZE
hex "Length in bytes of cache-as-RAM"
- default 0x10000
+ default 0x40000
help
The size of the cache-as-ram region required during bootblock
and/or romstage.
@@ -199,10 +199,6 @@
help
Include DSP firmware settings for ssm4567 smart amplifier.
-config DCACHE_RAM_SIZE_TOTAL
- hex
- default 0x40000
-
config SKIP_FSP_CAR
bool "Skip cache as RAM setup in FSP"
default y