Merge tag 'boards-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC board updates from Olof Johansson:
 "Board updates for 3.12.  Again, a bit of domain overlap with SoC and
  DT branches, but most of this is around legacy code and board support.
  We've found that platform maintainers have a hard time separating all
  of these out and might move towards fewer branches for next release.

   - Removal of a number of Marvell Kirkwood board files, since contents
     is now common and mostly configured via DT.
   - Device-tree updates for Marvell Dove, including irqchip and
     clocksource setup.
   - Defconfig updates.  Gotta go somewhere.  One new one for Renesas
     Lager.
   - New backlight drivers for backlights used on Renesas shmobile
     platforms.
   - Removal of Renesas leds driver.
   - Shuffling of some of the new Broadcom platforms to give room for
     others in the same mach directory.  More in 3.13"

* tag 'boards-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (67 commits)
  mmc: sdhci-bcm-kona: Staticize sdhci_bcm_kona_card_event
  mmc: sdhci-bcm-kona: Remove unneeded version.h inclusion
  ARM: bcm: Make secure API call optional
  ARM: DT: binding fixup to align with vendor-prefixes.txt (drivers)
  ARM: mmc: fix NONREMOVABLE test in sdhci-bcm-kona
  ARM: bcm: Rename board_bcm
  mmc: sdhci-bcm-kona: make linker-section warning go away
  ARM: tegra: defconfig updates
  ARM: dove: add initial DT file for Globalscale D2Plug
  ARM: dove: add GPIO IR receiver node to SolidRun CuBox
  ARM: dove: add common pinmux functions to DT
  ARM: dove: add cpu device tree node
  ARM: dove: update dove_defconfig with SI5351, PCI, and xHCI
  arch/arm/mach-kirkwood: Avoid using ARRAY_AND_SIZE(e) as a function argument
  ARM: kirkwood: fix DT building and update defconfig
  ARM: kirkwood: Remove all remaining trace of DNS-320/325 platform code
  ARM: configs: disable DEBUG_LL in bcm_defconfig
  ARM: bcm281xx: Board specific reboot code
  ARM bcm281xx: Turn on socket & network support.
  ARM: bcm281xx: Turn on L2 cache.
  ...

7 files changed, 117 insertions, 14 deletions

diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index f112895..69d67f7 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -12,6 +12,7 @@ config ARCH_BCM
 	select GPIO_BCM
 	select SPARSE_IRQ
 	select TICK_ONESHOT
+	select CACHE_L2X0
 	help
 	  This enables support for system based on Broadcom SoCs.
 	  It currently supports the 'BCM281XX' family, which includes
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
index 6adb6aec..e3d0303 100644
--- a/arch/arm/mach-bcm/Makefile
+++ b/arch/arm/mach-bcm/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2012 Broadcom Corporation
+# Copyright (C) 2012-2013 Broadcom Corporation
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
@@ -10,6 +10,6 @@
 # of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
-obj-$(CONFIG_ARCH_BCM)		:= board_bcm.o bcm_kona_smc.o bcm_kona_smc_asm.o
+obj-$(CONFIG_ARCH_BCM)		:= board_bcm281xx.o bcm_kona_smc.o bcm_kona_smc_asm.o kona.o
 plus_sec := $(call as-instr,.arch_extension sec,+sec)
 AFLAGS_bcm_kona_smc_asm.o	:=-Wa,-march=armv7-a$(plus_sec)
diff --git a/arch/arm/mach-bcm/bcm_kona_smc.c b/arch/arm/mach-bcm/bcm_kona_smc.c
index 56d9d19..5e31e91 100644
--- a/arch/arm/mach-bcm/bcm_kona_smc.c
+++ b/arch/arm/mach-bcm/bcm_kona_smc.c
@@ -36,18 +36,20 @@ struct bcm_kona_smc_data {
 };
 
 static const struct of_device_id bcm_kona_smc_ids[] __initconst = {
-	{.compatible = "bcm,kona-smc"},
+	{.compatible = "brcm,kona-smc"},
+	{.compatible = "bcm,kona-smc"}, /* deprecated name */
 	{},
 };
 
 /* Map in the bounce area */
-void __init bcm_kona_smc_init(void)
+int __init bcm_kona_smc_init(void)
 {
 	struct device_node *node;
 
 	/* Read buffer addr and size from the device tree node */
 	node = of_find_matching_node(NULL, bcm_kona_smc_ids);
-	BUG_ON(!node);
+	if (!node)
+		return -ENODEV;
 
 	/* Don't care about size or flags of the DT node */
 	bridge_data.buffer_addr =
@@ -59,7 +61,9 @@ void __init bcm_kona_smc_init(void)
 
 	bridge_data.initialized = 1;
 
-	pr_info("Secure API initialized!\n");
+	pr_info("Kona Secure API initialized\n");
+
+	return 0;
 }
 
 /* __bcm_kona_smc() should only run on CPU 0, with pre-emption disabled */
diff --git a/arch/arm/mach-bcm/bcm_kona_smc.h b/arch/arm/mach-bcm/bcm_kona_smc.h
index 3bedbed1..d098a7e 100644
--- a/arch/arm/mach-bcm/bcm_kona_smc.h
+++ b/arch/arm/mach-bcm/bcm_kona_smc.h
@@ -64,7 +64,7 @@
 #define SSAPI_BRCM_START_VC_CORE	0x0E000008
 
 #ifndef	__ASSEMBLY__
-extern void bcm_kona_smc_init(void);
+extern int __init bcm_kona_smc_init(void);
 
 extern unsigned bcm_kona_smc(unsigned service_id,
 			     unsigned arg0,
diff --git a/arch/arm/mach-bcm/board_bcm.c b/arch/arm/mach-bcm/board_bcm281xx.c
index 2859932..8d9f931 100644
--- a/arch/arm/mach-bcm/board_bcm.c
+++ b/arch/arm/mach-bcm/board_bcm281xx.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Broadcom Corporation
+ * Copyright (C) 2012-2013 Broadcom Corporation
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -21,23 +21,39 @@
 #include <asm/mach/time.h>
 #include <asm/hardware/cache-l2x0.h>
 
-
 #include "bcm_kona_smc.h"
+#include "kona.h"
 
 static int __init kona_l2_cache_init(void)
 {
 	if (!IS_ENABLED(CONFIG_CACHE_L2X0))
 		return 0;
 
+	if (bcm_kona_smc_init() < 0) {
+		pr_info("Kona secure API not available. Skipping L2 init\n");
+		return 0;
+	}
+
 	bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
 
 	/*
 	 * The aux_val and aux_mask have no effect since L2 cache is already
 	 * enabled.  Pass 0s for aux_val and 1s for aux_mask for default value.
 	 */
-	l2x0_of_init(0, ~0);
+	return l2x0_of_init(0, ~0);
+}
 
-	return 0;
+static void bcm_board_setup_restart(void)
+{
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "brcm,bcm11351");
+	if (np) {
+		if (of_device_is_available(np))
+			bcm_kona_setup_restart();
+		of_node_put(np);
+	}
+	/* Restart setup for other boards goes here */
 }
 
 static void __init board_init(void)
@@ -45,15 +61,15 @@ static void __init board_init(void)
 	of_platform_populate(NULL, of_default_bus_match_table, NULL,
 		&platform_bus);
 
-	bcm_kona_smc_init();
-
+	bcm_board_setup_restart();
 	kona_l2_cache_init();
 }
 
-static const char * const bcm11351_dt_compat[] = { "bcm,bcm11351", NULL, };
+static const char * const bcm11351_dt_compat[] = { "brcm,bcm11351", NULL, };
 
 DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor")
 	.init_time = clocksource_of_init,
 	.init_machine = board_init,
+	.restart = bcm_kona_restart,
 	.dt_compat = bcm11351_dt_compat,
 MACHINE_END
diff --git a/arch/arm/mach-bcm/kona.c b/arch/arm/mach-bcm/kona.c
new file mode 100644
index 0000000..6939d90
--- /dev/null
+++ b/arch/arm/mach-bcm/kona.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2013 Broadcom Corporation
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/of_address.h>
+#include <asm/io.h>
+
+#include "kona.h"
+
+static void __iomem *watchdog_base;
+
+void bcm_kona_setup_restart(void)
+{
+	struct device_node *np_wdog;
+
+	/*
+	 * The assumption is that whoever calls bcm_kona_setup_restart()
+	 * also needs a Kona Watchdog Timer entry in Device Tree, i.e. we
+	 * report an error if the DT entry is missing.
+	 */
+	np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt");
+	if (!np_wdog) {
+		pr_err("brcm,kona-wdt not found in DT, reboot disabled\n");
+		return;
+	}
+	watchdog_base = of_iomap(np_wdog, 0);
+	WARN(!watchdog_base, "failed to map watchdog base");
+	of_node_put(np_wdog);
+}
+
+#define SECWDOG_OFFSET			0x00000000
+#define SECWDOG_RESERVED_MASK		0xE2000000
+#define SECWDOG_WD_LOAD_FLAG_MASK	0x10000000
+#define SECWDOG_EN_MASK			0x08000000
+#define SECWDOG_SRSTEN_MASK		0x04000000
+#define SECWDOG_CLKS_SHIFT		20
+#define SECWDOG_LOCK_SHIFT		0
+
+void bcm_kona_restart(enum reboot_mode mode, const char *cmd)
+{
+	uint32_t val;
+
+	if (!watchdog_base)
+		panic("Watchdog not mapped. Reboot failed.\n");
+
+	/* Enable watchdog2 with very short timeout. */
+	val = readl(watchdog_base + SECWDOG_OFFSET);
+	val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK;
+	val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK |
+		(0x8 << SECWDOG_CLKS_SHIFT) |
+		(0x8 << SECWDOG_LOCK_SHIFT);
+	writel(val, watchdog_base + SECWDOG_OFFSET);
+
+	while (1)
+		;
+}
diff --git a/arch/arm/mach-bcm/kona.h b/arch/arm/mach-bcm/kona.h
new file mode 100644
index 0000000..291eca3
--- /dev/null
+++ b/arch/arm/mach-bcm/kona.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2013 Broadcom Corporation
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/reboot.h>
+
+void bcm_kona_setup_restart(void);
+void bcm_kona_restart(enum reboot_mode mode, const char *cmd);