patch-mx1-mtd-xip

Adds MTD XIP support for ARCH_MX1.

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 34 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/include/mach/mtd-xip.h b/arch/arm/plat-mxc/include/mach/mtd-xip.h
new file mode 100644
index 00000000000..1ab1bba5688
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/mtd-xip.h
@@ -0,0 +1,34 @@
+/*
+ * MTD primitives for XIP support. Architecture specific functions
+ *
+ * Do not include this file directly. It's included from linux/mtd/xip.h
+ *
+ * Copyright (C) 2008 Darius Augulis <augulis.darius@gmail.com>, Teltonika, Inc.
+ *
+ * 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 <mach/mxc_timer.h>
+
+#ifndef __ARCH_IMX_MTD_XIP_H__
+#define __ARCH_IMX_MTD_XIP_H__
+
+#ifdef CONFIG_ARCH_MX1
+/* AITC registers */
+#define AITC_BASE       IO_ADDRESS(AVIC_BASE_ADDR)
+#define NIPNDH          (AITC_BASE + 0x58)
+#define NIPNDL          (AITC_BASE + 0x5C)
+#define INTENABLEH      (AITC_BASE + 0x10)
+#define INTENABLEL      (AITC_BASE + 0x14)
+/* MTD macros */
+#define xip_irqpending() ((__raw_readl(INTENABLEH) &  __raw_readl(NIPNDH)) \
+                        || (__raw_readl(INTENABLEL) &  __raw_readl(NIPNDL)))
+#define xip_currtime()          (__raw_readl(TIMER_BASE + MXC_TCN))
+#define xip_elapsed_since(x)    (signed)((__raw_readl(TIMER_BASE + MXC_TCN) - (x)) / 96)
+#define xip_cpu_idle()          asm volatile ("mcr p15, 0, %0, c7, c0, 4" :: "r" (0))
+#endif /* CONFIG_ARCH_MX1 */
+
+#endif /* __ARCH_IMX_MTD_XIP_H__ */