[ARM] 3369/1: ep93xx: add core cirrus ep93xx support

Patch from Lennert Buytenhek

This patch adds support for the Cirrus ep93xx series of CPUs.  The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.

This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 26 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ep93xx/system.h b/include/asm-arm/arch-ep93xx/system.h
new file mode 100644
index 000000000000..79b718586746
--- /dev/null
+++ b/include/asm-arm/arch-ep93xx/system.h
@@ -0,0 +1,26 @@
+/*
+ * linux/include/asm-arm/arch-ep93xx/system.h
+ */
+
+#include <asm/hardware.h>
+
+static inline void arch_idle(void)
+{
+        cpu_do_idle();
+}
+
+static inline void arch_reset(char mode)
+{
+        u32 devicecfg;
+
+        local_irq_disable();
+
+        devicecfg = __raw_readl(EP93XX_SYSCON_DEVICE_CONFIG);
+        __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
+        __raw_writel(devicecfg | 0x80000000, EP93XX_SYSCON_DEVICE_CONFIG);
+        __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
+        __raw_writel(devicecfg & ~0x80000000, EP93XX_SYSCON_DEVICE_CONFIG);
+
+        while (1)
+                ;
+}