1 files changed, 59 insertions, 0 deletions

diff --git a/include/asm-arm/arch-iop13xx/system.h b/include/asm-arm/arch-iop13xx/system.h
new file mode 100644
index 000000000000..ee3a62530af2
--- /dev/null
+++ b/include/asm-arm/arch-iop13xx/system.h
@@ -0,0 +1,59 @@
+/*
+ * linux/include/asm-arm/arch-iop13xx/system.h
+ *
+ *  Copyright (C) 2004 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <asm/arch/iop13xx.h>
+static inline void arch_idle(void)
+{
+        cpu_do_idle();
+}
+
+/* WDTCR CP6 R7 Page 9 */
+static inline u32 read_wdtcr(void)
+{
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c7, c9, 0":"=r" (val));
+        return val;
+}
+static inline void write_wdtcr(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c7, c9, 0"::"r" (val));
+}
+
+/* WDTSR CP6 R8 Page 9 */
+static inline u32 read_wdtsr(void)
+{
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c8, c9, 0":"=r" (val));
+        return val;
+}
+static inline void write_wdtsr(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c8, c9, 0"::"r" (val));
+}
+
+#define IOP13XX_WDTCR_EN_ARM    0x1e1e1e1e
+#define IOP13XX_WDTCR_EN        0xe1e1e1e1
+#define IOP13XX_WDTCR_DIS_ARM   0x1f1f1f1f
+#define IOP13XX_WDTCR_DIS       0xf1f1f1f1
+#define IOP13XX_WDTSR_WRITE_EN  (1 << 31)
+#define IOP13XX_WDTCR_IB_RESET  (1 << 0)
+static inline void arch_reset(char mode)
+{
+        /*
+         * Reset the internal bus (warning both cores are reset)
+         */
+        u32 cp_flags = iop13xx_cp6_save();
+        write_wdtcr(IOP13XX_WDTCR_EN_ARM);
+        write_wdtcr(IOP13XX_WDTCR_EN);
+        write_wdtsr(IOP13XX_WDTSR_WRITE_EN | IOP13XX_WDTCR_IB_RESET);
+        write_wdtcr(0x1000);
+        iop13xx_cp6_restore(cp_flags);
+
+        for(;;);
+}