x86: Move common MRC Kconfig options to the common file
At present the MRC options are private to ivybridge. Other Intel CPUs also
use these settings. Move them to a common place.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5fad794..64c824f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -266,6 +266,67 @@
to be used for speeding up boot time on future reboots and/or
power cycles.
+config HAVE_MRC
+ bool "Add a System Agent binary"
+ depends on !HAVE_FSP
+ help
+ Select this option to add a System Agent binary to
+ the resulting U-Boot image. MRC stands for Memory Reference Code.
+ It is a binary blob which U-Boot uses to set up SDRAM.
+
+ Note: Without this binary U-Boot will not be able to set up its
+ SDRAM so will not boot.
+
+config CACHE_MRC_BIN
+ bool
+ depends on HAVE_MRC
+ default n
+ help
+ Enable caching for the memory reference code binary. This uses an
+ MTRR (memory type range register) to turn on caching for the section
+ of SPI flash that contains the memory reference code. This makes
+ SDRAM init run faster.
+
+config CACHE_MRC_SIZE_KB
+ int
+ depends on HAVE_MRC
+ default 512
+ help
+ Sets the size of the cached area for the memory reference code.
+ This ends at the end of SPI flash (address 0xffffffff) and is
+ measured in KB. Typically this is set to 512, providing for 0.5MB
+ of cached space.
+
+config DCACHE_RAM_BASE
+ hex
+ depends on HAVE_MRC
+ help
+ Sets the base of the data cache area in memory space. This is the
+ start address of the cache-as-RAM (CAR) area and the address varies
+ depending on the CPU. Once CAR is set up, read/write memory becomes
+ available at this address and can be used temporarily until SDRAM
+ is working.
+
+config DCACHE_RAM_SIZE
+ hex
+ depends on HAVE_MRC
+ default 0x40000
+ help
+ Sets the total size of the data cache area in memory space. This
+ sets the size of the cache-as-RAM (CAR) area. Note that much of the
+ CAR space is required by the MRC. The CAR space available to U-Boot
+ is normally at the start and typically extends to 1/4 or 1/2 of the
+ available size.
+
+config DCACHE_RAM_MRC_VAR_SIZE
+ hex
+ depends on HAVE_MRC
+ help
+ This is the amount of CAR (Cache as RAM) reserved for use by the
+ memory reference code. This depends on the implementation of the
+ memory reference code and must be set correctly or the board will
+ not boot.
+
config SMP
bool "Enable Symmetric Multiprocessing"
default n
diff --git a/arch/x86/cpu/ivybridge/Kconfig b/arch/x86/cpu/ivybridge/Kconfig
index 0819347..e23d01a 100644
--- a/arch/x86/cpu/ivybridge/Kconfig
+++ b/arch/x86/cpu/ivybridge/Kconfig
@@ -7,43 +7,18 @@
config NORTHBRIDGE_INTEL_IVYBRIDGE
bool
- select CACHE_MRC_BIN
+ select CACHE_MRC_BIN if HAVE_MRC
if NORTHBRIDGE_INTEL_IVYBRIDGE
-config CACHE_MRC_BIN
- bool
- default n
-
-config CACHE_MRC_SIZE_KB
- int
- default 512
-
config DCACHE_RAM_BASE
- hex
default 0xff7e0000
config DCACHE_RAM_SIZE
- hex
default 0x20000
-config HAVE_MRC
- bool "Add a System Agent binary"
- help
- Select this option to add a System Agent binary to
- the resulting U-Boot image. MRC stands for Memory Reference Code.
- It is a binary blob which U-Boot uses to set up SDRAM.
-
- Note: Without this binary U-Boot will not be able to set up its
- SDRAM so will not boot.
-
config DCACHE_RAM_MRC_VAR_SIZE
- hex
default 0x4000
- help
- This is the amount of CAR (Cache as RAM) reserved for use by the
- memory reference code. This should be set to 16KB (0x4000 hex)
- so that MRC has enough space to run.
config CPU_SPECIFIC_OPTIONS
def_bool y