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 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -266,6 +266,67 @@ config ENABLE_MRC_CACHE
          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 (file)
--- 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