ARM: mach-bcm: soc updates for 3.15 - part 2

- Add bcm21664 support
 - Use Kona Debug UART only on ARCH_BCM_MOBILE
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJTI1XaAAoJEOfTILNwq7R4y+gP/R4b689mZGiNM48PgWqzqK1o
 EgOg7GU9hMpZqAdzpFznWlePJeO0hKo8JZ7ozUefPQe4l3Lxt92C3lgrrJzZxbi5
 40N3mGwhjyrAS8DfdjBGDIJzCW+GUmNbQBb4yh9rFa40Z3kOh5c3xj30J+tA+/5M
 JT4H8tHS1AEJEuGedtIDASyN45cehskCYJ/dIYfeNOTPH4CaLhq9RxyO6PNSEvHD
 f9UG0jC1GIu9bDfkPBBzKIaJABSXzdUwT9fd7coKB9gFR9DcmpUUgFUZ9ZGqWHUO
 sBzMtWQI4Z5ueV226nrJca2zth4W8eMOu/GHbjVT7YLoDmibqRL/HlJfnoOaJLOg
 e1lk/ZsNk+hnNNvmyuFhadpFjxaDuDQM1rRkjyV60EszJ5gwre4MtAyrMX48dtUr
 nPmbgciUateNabgtJNJxVGehH/NPKf42sLcEsq4z+hCF3JI9nNmjpoPD6wILwNIz
 k2HOoOCWXo9z/57XJv2EDOHZbTpqmnyEaiFvR7hjtiHTohXgFTNVb5BvNMf7GbtA
 GUKp0qmhnPjseKMteNO2TiSO8OiHKLUQ1elIKeLY7CedpuEHHK1uj+eU/nzx0W95
 AimQRlNaWFqxJaSMpYkYUa+DGrAxsxbxnsnIUJWcUy1sEboNREIhwhaGv0hlfPuS
 QVl4PoPnY5iZ+4xKDFQi
 =bmN2
 -----END PGP SIGNATURE-----

Merge tag 'armsoc/for-3.15/soc-3' of git://github.com/broadcom/mach-bcm into next/soc

Merge "ARM: mach-bcm: soc updates for 3.15 - part 2" from Matt Porter:

- Add bcm21664 support
- Use Kona Debug UART only on ARCH_BCM_MOBILE

* tag 'armsoc/for-3.15/soc-3' of git://github.com/broadcom/mach-bcm:
  ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE
  ARM: bcm21664: Add board support.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig.debug

@@ -113,7 +113,7 @@ choice
 
 	config DEBUG_BCM_KONA_UART
 		bool "Kernel low-level debugging messages via BCM KONA UART"
-		depends on ARCH_BCM
+		depends on ARCH_BCM_MOBILE
 		select DEBUG_UART_8250
 		help
 		  Say Y here if you want kernel low-level debugging support

arch/arm/mach-bcm/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2012-2013 Broadcom Corporation
+# Copyright (C) 2012-2014 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
@@ -10,7 +10,9 @@
 # of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
-obj-$(CONFIG_ARCH_BCM_MOBILE)	:= board_bcm281xx.o bcm_kona_smc.o bcm_kona_smc_asm.o kona.o
+obj-$(CONFIG_ARCH_BCM_MOBILE)	:= board_bcm281xx.o board_bcm21664.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)
 obj-$(CONFIG_ARCH_BCM_5301X)	+= bcm_5301x.o

arch/arm/mach-bcm/board_bcm21664.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014 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/clocksource.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+
+#include "bcm_kona_smc.h"
+#include "kona.h"
+
+#define RSTMGR_DT_STRING		"brcm,bcm21664-resetmgr"
+
+#define RSTMGR_REG_WR_ACCESS_OFFSET	0
+#define RSTMGR_REG_CHIP_SOFT_RST_OFFSET	4
+
+#define RSTMGR_WR_PASSWORD		0xa5a5
+#define RSTMGR_WR_PASSWORD_SHIFT	8
+#define RSTMGR_WR_ACCESS_ENABLE		1
+
+static void bcm21664_restart(enum reboot_mode mode, const char *cmd)
+{
+	void __iomem *base;
+	struct device_node *resetmgr;
+
+	resetmgr = of_find_compatible_node(NULL, NULL, RSTMGR_DT_STRING);
+	if (!resetmgr) {
+		pr_emerg("Couldn't find " RSTMGR_DT_STRING "\n");
+		return;
+	}
+	base = of_iomap(resetmgr, 0);
+	if (!base) {
+		pr_emerg("Couldn't map " RSTMGR_DT_STRING "\n");
+		return;
+	}
+
+	/*
+	 * A soft reset is triggered by writing a 0 to bit 0 of the soft reset
+	 * register. To write to that register we must first write the password
+	 * and the enable bit in the write access enable register.
+	 */
+	writel((RSTMGR_WR_PASSWORD << RSTMGR_WR_PASSWORD_SHIFT) |
+		RSTMGR_WR_ACCESS_ENABLE,
+		base + RSTMGR_REG_WR_ACCESS_OFFSET);
+	writel(0, base + RSTMGR_REG_CHIP_SOFT_RST_OFFSET);
+
+	/* Wait for reset */
+	while (1);
+}
+
+static void __init bcm21664_init(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table, NULL,
+		&platform_bus);
+	kona_l2_cache_init();
+}
+
+static const char * const bcm21664_dt_compat[] = {
+	"brcm,bcm21664",
+	NULL,
+};
+
+DT_MACHINE_START(BCM21664_DT, "BCM21664 Broadcom Application Processor")
+	.init_machine = bcm21664_init,
+	.restart = bcm21664_restart,
+	.dt_compat = bcm21664_dt_compat,
+MACHINE_END