aboutsummaryrefslogtreecommitdiff
path: root/include/asm-arm/arch-ebsa285/system.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-arm/arch-ebsa285/system.h')
-rw-r--r--include/asm-arm/arch-ebsa285/system.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/include/asm-arm/arch-ebsa285/system.h b/include/asm-arm/arch-ebsa285/system.h
new file mode 100644
index 00000000000..bf91c695c4b
--- /dev/null
+++ b/include/asm-arm/arch-ebsa285/system.h
@@ -0,0 +1,69 @@
+/*
+ * linux/include/asm-arm/arch-ebsa285/system.h
+ *
+ * Copyright (C) 1996-1999 Russell King.
+ *
+ * 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/hardware/dec21285.h>
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/leds.h>
+#include <asm/mach-types.h>
+
+static inline void arch_idle(void)
+{
+ cpu_do_idle();
+}
+
+static inline void arch_reset(char mode)
+{
+ if (mode == 's') {
+ /*
+ * Jump into the ROM
+ */
+ cpu_reset(0x41000000);
+ } else {
+ if (machine_is_netwinder()) {
+ /* open up the SuperIO chip
+ */
+ outb(0x87, 0x370);
+ outb(0x87, 0x370);
+
+ /* aux function group 1 (logical device 7)
+ */
+ outb(0x07, 0x370);
+ outb(0x07, 0x371);
+
+ /* set GP16 for WD-TIMER output
+ */
+ outb(0xe6, 0x370);
+ outb(0x00, 0x371);
+
+ /* set a RED LED and toggle WD_TIMER for rebooting
+ */
+ outb(0xc4, 0x338);
+ } else {
+ /*
+ * Force the watchdog to do a CPU reset.
+ *
+ * After making sure that the watchdog is disabled
+ * (so we can change the timer registers) we first
+ * enable the timer to autoreload itself. Next, the
+ * timer interval is set really short and any
+ * current interrupt request is cleared (so we can
+ * see an edge transition). Finally, TIMER4 is
+ * enabled as the watchdog.
+ */
+ *CSR_SA110_CNTL &= ~(1 << 13);
+ *CSR_TIMER4_CNTL = TIMER_CNTL_ENABLE |
+ TIMER_CNTL_AUTORELOAD |
+ TIMER_CNTL_DIV16;
+ *CSR_TIMER4_LOAD = 0x2;
+ *CSR_TIMER4_CLR = 0;
+ *CSR_SA110_CNTL |= (1 << 13);
+ }
+ }
+}