1 files changed, 24 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/cpu.c b/arch/arm/plat-mxc/cpu.c
index f5b7e0fa237f..220dd6f93126 100644
--- a/arch/arm/plat-mxc/cpu.c
+++ b/arch/arm/plat-mxc/cpu.c
@@ -1,5 +1,6 @@
 
 #include <linux/module.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
 
 unsigned int __mxc_cpu_type;
@@ -18,3 +19,26 @@ void imx_print_silicon_rev(const char *cpu, int srev)
                 pr_info("CPU identified as %s, silicon rev %d.%d\n",
                                 cpu, (srev >> 4) & 0xf, srev & 0xf);
 }
+
+void __init imx_set_aips(void __iomem *base)
+{
+        unsigned int reg;
+/*
+ * Set all MPROTx to be non-bufferable, trusted for R/W,
+ * not forced to user-mode.
+ */
+        __raw_writel(0x77777777, base + 0x0);
+        __raw_writel(0x77777777, base + 0x4);
+
+/*
+ * Set all OPACRx to be non-bufferable, to not require
+ * supervisor privilege level for access, allow for
+ * write access and untrusted master access.
+ */
+        __raw_writel(0x0, base + 0x40);
+        __raw_writel(0x0, base + 0x44);
+        __raw_writel(0x0, base + 0x48);
+        __raw_writel(0x0, base + 0x4C);
+        reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
+        __raw_writel(reg, base + 0x50);
+}