x86: baytrail: Save mrc cache to spi flash

Save MRC cache to SPI flash in arch_misc_init().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/x86/cpu/baytrail/valleyview.c b/arch/x86/cpu/baytrail/valleyview.c
index 4baaae6..215e0d0 100644 (file)
--- a/arch/x86/cpu/baytrail/valleyview.c
+++ b/arch/x86/cpu/baytrail/valleyview.c
@@ -8,6 +8,7 @@
 #include <mmc.h>
 #include <pci_ids.h>
 #include <asm/irq.h>
+#include <asm/mrccache.h>
 #include <asm/post.h>
 
 static struct pci_device_id mmc_supported[] = {
@@ -43,6 +44,24 @@ int arch_misc_init(void)
        if (!ll_boot_init())
                return 0;
 
+#ifdef CONFIG_ENABLE_MRC_CACHE
+       /*
+        * We intend not to check any return value here, as even MRC cache
+        * is not saved successfully, it is not a severe error that will
+        * prevent system from continuing to boot.
+        */
+       mrccache_save();
+#endif
+
        return pirq_init();
 }
+
+int reserve_arch(void)
+{
+#ifdef CONFIG_ENABLE_MRC_CACHE
+       return mrccache_reserve();
+#else
+       return 0;
+#endif
+}
 #endif