[ARM] S3C64XX: Initial arch header files

Add the initial header files for the S3C64XX support to satisfy the
minimal requirements to build a kernel. Some definitions will therefore
be placeholders or empty functions that will ensure that the system can
build and have base functionality. These will be filled in at a later
date.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/plat-s3c64xx/include/plat/irqs.h b/arch/arm/plat-s3c64xx/include/plat/irqs.h
new file mode 100644
index 0000000..592a563
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/include/plat/irqs.h
@@ -0,0 +1,38 @@
+/* linux/arch/arm/plat-s3c64xx/include/mach/irqs.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX - Common IRQ support
+ */
+
+#ifndef __ASM_PLAT_S3C64XX_IRQS_H
+#define __ASM_PLAT_S3C64XX_IRQS_H __FILE__
+
+/* we keep the first set of CPU IRQs out of the range of
+ * the ISA space, so that the PC104 has them to itself
+ * and we don't end up having to do horrible things to the
+ * standard ISA drivers....
+ */
+
+#define S3C_IRQ_OFFSET	(16)
+
+#define S3C_IRQ(x)	((x) + S3C_IRQ_OFFSET)
+
+/* Since the IRQ_EINT(x) are a linear mapping on current s3c64xx series
+ * we just defined them as an IRQ_EINT(x) macro from S3C_IRQ_EINT_BASE
+ * which we place after the pair of VICs. */
+
+#define S3C_IRQ_EINT_BASE	S3C_IRQ(64)
+
+#define S3C_EINT(x)	((x) + S3C_IRQ_EINT_BASE)
+
+/* Define NR_IRQs here, machine specific can always re-define.
+ * Currently the IRQ_EINT27 is the last one we can have. */
+
+#define NR_IRQS	(S3C_EINT(27) + 1)
+
+#endif /* __ASM_PLAT_S3C64XX_IRQS_H */
+