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authorValentin Longchamp <valentin.longchamp@keymile.com>2014-08-13 10:24:04 +0200
committerYork Sun <yorksun@freescale.com>2014-08-20 10:44:16 -0700
commit24753676700020b635bd0f27712df26cb71f3646 (patch)
tree7b30238964ddd14941779e166649179a442fafba
parent12eeb1359aa365061f65d978bf728e42813d53dd (diff)
km-powerpc: define CONFIG_PRAM to protect PHRAM and PNVRAM
When u-boot initializes the RAM (early in boot) it looks for the "pram" env variable to know which is area it cannot use. If the "pram" env variable is not found, the default CONFIG_PRAM value is used. This value used to be 0 (no protection at all). This patch sets it to a value that covers PHRAM and PNVRAM that must be protected in our case. Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Reviewed-by: York Sun <yorksun@freescale.com>
-rw-r--r--include/configs/km/km-powerpc.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/configs/km/km-powerpc.h b/include/configs/km/km-powerpc.h
index 763c5bad82..eb85a74919 100644
--- 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 */