powerpc/mpc8xxx: SECURE BOOT- Disable law 0 for non PBL platforms
ISBC creates a LAW 0 entry for non PBL platforms, which is not
disabled before transferring the control to uboot.
The LAW 0 entry has to be disabled.
Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc8xxx/law.c b/arch/powerpc/cpu/mpc8xxx/law.c
index a401083..55ee125 100644
--- a/arch/powerpc/cpu/mpc8xxx/law.c
+++ b/arch/powerpc/cpu/mpc8xxx/law.c
@@ -233,6 +233,16 @@
#error FSL_HW_NUM_LAWS can not be greater than 32 w/o code changes
#endif
+#if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500) && \
+ !defined(CONFIG_E500MC)
+ /* ISBC (Boot ROM) creates a LAW 0 entry for non PBL platforms,
+ * which is not disabled before transferring the control to uboot.
+ * Disable the LAW 0 entry here.
+ */
+ disable_law(0);
+#endif
+
+
/*
* Any LAWs that were set up before we booted assume they are meant to
* be around and mark them used.