initial_commit

1 files changed, 59 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/include/mach/system.h b/arch/arm/mach-at91/include/mach/system.h
new file mode 100644
index 00000000..36af14bc
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/system.h
@@ -0,0 +1,59 @@
+/*
+ * arch/arm/mach-at91/include/mach/system.h
+ *
+ *  Copyright (C) 2003 SAN People
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+#include <mach/hardware.h>
+#include <mach/at91_st.h>
+#include <mach/at91_dbgu.h>
+#include <mach/at91_pmc.h>
+
+static inline void arch_idle(void)
+{
+	/*
+	 * Disable the processor clock.  The processor will be automatically
+	 * re-enabled by an interrupt or by a reset.
+	 */
+#ifdef AT91_PS
+	at91_sys_write(AT91_PS_CR, AT91_PS_CR_CPU);
+#else
+	at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK);
+#endif
+#ifndef CONFIG_CPU_ARM920T
+	/*
+	 * Set the processor (CP15) into 'Wait for Interrupt' mode.
+	 * Post-RM9200 processors need this in conjunction with the above
+	 * to save power when idle.
+	 */
+	cpu_do_idle();
+#endif
+}
+
+void (*at91_arch_reset)(void);
+
+static inline void arch_reset(char mode, const char *cmd)
+{
+	/* call the CPU-specific reset function */
+	if (at91_arch_reset)
+		(at91_arch_reset)();
+}
+
+#endif