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Diffstat (limited to 'arch/powerpc/platforms/83xx/misc.c')
-rw-r--r--arch/powerpc/platforms/83xx/misc.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/83xx/misc.c b/arch/powerpc/platforms/83xx/misc.c
new file mode 100644
index 00000000000..1455bcef489
--- /dev/null
+++ b/arch/powerpc/platforms/83xx/misc.c
@@ -0,0 +1,55 @@
+/*
+ * misc setup functions for MPC83xx
+ *
+ * Maintainer: Kumar Gala <galak@kernel.crashing.org>
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+
+#include <asm/io.h>
+#include <asm/hw_irq.h>
+#include <sysdev/fsl_soc.h>
+
+#include "mpc83xx.h"
+
+void mpc83xx_restart(char *cmd)
+{
+#define RST_OFFSET 0x00000900
+#define RST_PROT_REG 0x00000018
+#define RST_CTRL_REG 0x0000001c
+ __be32 __iomem *reg;
+
+ /* map reset register space */
+ reg = ioremap(get_immrbase() + 0x900, 0xff);
+
+ local_irq_disable();
+
+ /* enable software reset "RSTE" */
+ out_be32(reg + (RST_PROT_REG >> 2), 0x52535445);
+
+ /* set software hard reset */
+ out_be32(reg + (RST_CTRL_REG >> 2), 0x2);
+ for (;;) ;
+}
+
+long __init mpc83xx_time_init(void)
+{
+#define SPCR_OFFSET 0x00000110
+#define SPCR_TBEN 0x00400000
+ __be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4);
+ __be32 tmp;
+
+ tmp = in_be32(spcr);
+ out_be32(spcr, tmp | SPCR_TBEN);
+
+ iounmap(spcr);
+
+ return 0;
+}