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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(+)
--- 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-axi");
+ 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)
{
@@ -43,6 +60,19 @@ static void __init bcm5301x_init_early(v
"imprecise external abort");
}
+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,
@@ -52,5 +82,6 @@ DT_MACHINE_START(BCM5301X, "BCM5301X")
.l2c_aux_val = 0,
.l2c_aux_mask = ~0,
.init_early = bcm5301x_init_early,
+ .restart = bcm5301x_restart,
.dt_compat = bcm5301x_dt_compat,
MACHINE_END
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