bcm53xx: add restart support

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41912 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/bcm53xx/patches-3.14/131-ARM-BCM5301X-add-restart-support.patch

@@ -0,0 +1,74 @@
+From 28b11a8b1258214b3b5d58bb6e3bbcb0fc9fd4fe Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 31 Jul 2014 07:28:05 +0200
+Subject: [PATCH] ARM: BCM5301X: add restart support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ arch/arm/mach-bcm/bcm_5301x.c | 31 +++++++++++++++++++++++++++++++
+ 1 file changed, 31 insertions(+)
+
+diff --git a/arch/arm/mach-bcm/bcm_5301x.c b/arch/arm/mach-bcm/bcm_5301x.c
+index edff697..e349897 100644
+--- a/arch/arm/mach-bcm/bcm_5301x.c
++++ b/arch/arm/mach-bcm/bcm_5301x.c
+@@ -12,9 +12,26 @@
+ #include <asm/siginfo.h>
+ #include <asm/signal.h>
+ 
++#include <linux/bcma/bcma.h>
+ 
+ static bool first_fault = true;
+ 
++static struct bcma_bus *bcm5301x_get_bcma_bus(void)
++{
++	struct device_node *np;
++	struct platform_device *pdev;
++
++	np = of_find_compatible_node(NULL, NULL, "brcm,bus-aix");
++	if (!np)
++		return NULL;
++
++	pdev = of_find_device_by_node(np);
++	if (!pdev)
++		return NULL;
++
++	return platform_get_drvdata(pdev);
++}
++
+ static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr,
+ 				 struct pt_regs *regs)
+ {
+@@ -49,6 +66,19 @@ static void __init bcm5301x_dt_init(void)
+ 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ }
+ 
++static void bcm5301x_restart(enum reboot_mode mode, const char *cmd)
++{
++	struct bcma_bus *bus = bcm5301x_get_bcma_bus();
++
++	if (bus)
++		bcma_chipco_watchdog_timer_set(&bus->drv_cc, 1);
++	else
++		pr_warn("Unable to access bcma bus\n");
++
++	while (1)
++		;
++}
++
+ static const char __initconst *bcm5301x_dt_compat[] = {
+ 	"brcm,bcm4708",
+ 	NULL,
+@@ -57,5 +87,6 @@ static const char __initconst *bcm5301x_dt_compat[] = {
+ DT_MACHINE_START(BCM5301X, "BCM5301X")
+ 	.init_early	= bcm5301x_init_early,
+ 	.init_machine	= bcm5301x_dt_init,
++	.restart	= bcm5301x_restart,
+ 	.dt_compat	= bcm5301x_dt_compat,
+ MACHINE_END
+-- 
+1.8.4.5
+