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-rw-r--r--arch/arm/mach-imx/cpu.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
new file mode 100644
index 0000000..03fcbd0
--- /dev/null
+++ b/arch/arm/mach-imx/cpu.c
@@ -0,0 +1,45 @@
+
+#include <linux/module.h>
+#include <linux/io.h>
+
+#include "hardware.h"
+
+unsigned int __mxc_cpu_type;
+EXPORT_SYMBOL(__mxc_cpu_type);
+
+void mxc_set_cpu_type(unsigned int type)
+{
+ __mxc_cpu_type = type;
+}
+
+void imx_print_silicon_rev(const char *cpu, int srev)
+{
+ if (srev == IMX_CHIP_REVISION_UNKNOWN)
+ pr_info("CPU identified as %s, unknown revision\n", cpu);
+ else
+ 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);
+}