On Aug 13, 2009, at 6:06 PM, Paul Gortmaker wrote:
From: Liang Li <[email protected]>
The existing fsl_rstcr_restart function fails to reset the sbc8560
board. This implements a board specific reset function that uses
the RCR(Reset Control Register) of the board's EPLD to do a reset.
Signed-off-by: Liang Li <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
---
arch/powerpc/platforms/85xx/sbc8560.c | 39 ++++++++++++++++++++++++
++++++++-
1 files changed, 38 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/
platforms/85xx/sbc8560.c
index cc27807..86dcca2 100644
--- a/arch/powerpc/platforms/85xx/sbc8560.c
+++ b/arch/powerpc/platforms/85xx/sbc8560.c
@@ -267,6 +267,43 @@ arch_initcall(sbc8560_rtc_init);
#endif /* M48T59 */
+static __u8 __iomem *brstcr;
+
+static int __init sbc8560_bdrstcr_init(void)
+{
+ struct device_node *np;
+ struct resource res;
+
+ np = of_find_compatible_node(NULL, NULL, "wrs,sbc8560-brstcr");
+ if (np == NULL) {
+ printk(KERN_WARNING "sbc8560: No board specific RSTCR in
DTB.\n");
+ return -ENODEV;
+ }
+
+ of_address_to_resource(np, 0, &res);
+
+ printk(KERN_INFO "sbc8560: Found BRSTCR at i/o 0x%x\n", res.start);
+
+ brstcr = ioremap(res.start, res.end - res.start);
+ if(!brstcr)
+ printk(KERN_WARNING "sbc8560: ioremap of brstcr failed.\n");
+
+ of_node_put(np);
+
+ return 0;
+}
+
+arch_initcall(sbc8560_bdrstcr_init);
+
+void sbc8560_rstcr_restart(char * cmd)
+{
+ local_irq_disable();
+ if(brstcr)
+ out_8(brstcr,in_8(brstcr) & 0x7f);
how about using clrbits8()
+
+ while(1);
+}
+
define_machine(sbc8560) {
.name = "SBC8560",
.probe = sbc8560_probe,
@@ -274,7 +311,7 @@ define_machine(sbc8560) {
.init_IRQ = sbc8560_pic_init,
.show_cpuinfo = sbc8560_show_cpuinfo,
.get_irq = mpic_get_irq,
- .restart = fsl_rstcr_restart,
+ .restart = sbc8560_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
--
1.6.3.3
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