km-powerpc: define CONFIG_PRAM to protect PHRAM and PNVRAM

[people/ms/u-boot.git] / include / configs / km / km-powerpc.h

diff --git a/include/configs/km/km-powerpc.h b/include/configs/km/km-powerpc.h
index 763c5bad82c40d095470c34ec85db5be1a9a46a4..eb85a7491910b1038f941839ea2099974b0a9e9f 100644 (file)
--- a/include/configs/km/km-powerpc.h
+++ b/include/configs/km/km-powerpc.h
@@ -59,8 +59,9 @@
 #define CONFIG_KM_PHRAM                0x100000
 /* resereved pram area at the end of memroy [hex] */
 #define CONFIG_KM_RESERVED_PRAM        0x0
-/* enable protected RAM */
-#define CONFIG_PRAM            0
+/* set the default PRAM value to at least PNVRAM + PHRAM when pram env variable
+ * is not valid yet, which is the case for when u-boot copies itself to RAM */
+#define CONFIG_PRAM            ((CONFIG_KM_PNVRAM + CONFIG_KM_PHRAM)>>10)
 
 #define CONFIG_KM_CRAMFS_ADDR  0x800000
 #define CONFIG_KM_KERNEL_ADDR  0x400000        /* 3968Kbytes */