1 files changed, 44 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c
new file mode 100644
index 000000000000..6637cd819ecb
--- /dev/null
+++ b/arch/arm/mach-imx/cpu-imx35.c
@@ -0,0 +1,44 @@
+/*
+ * MX35 CPU type detection
+ *
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/io.h>
+#include <mach/hardware.h>
+#include <mach/iim.h>
+
+unsigned int mx35_cpu_rev;
+EXPORT_SYMBOL(mx35_cpu_rev);
+
+void __init mx35_read_cpu_rev(void)
+{
+        u32 rev;
+        char *srev;
+
+        rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV));
+        switch (rev) {
+        case 0x00:
+                mx35_cpu_rev = IMX_CHIP_REVISION_1_0;
+                srev = "1.0";
+                break;
+        case 0x10:
+                mx35_cpu_rev = IMX_CHIP_REVISION_2_0;
+                srev = "2.0";
+                break;
+        case 0x11:
+                mx35_cpu_rev = IMX_CHIP_REVISION_2_1;
+                srev = "2.1";
+                break;
+        default:
+                mx35_cpu_rev = IMX_CHIP_REVISION_UNKNOWN;
+                srev = "unknown";
+        }
+
+        printk(KERN_INFO "CPU identified as i.MX35, silicon rev %s\n", srev);
+}