Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:

 - More work on DT support for various platforms

 - Various fixes that were to late to make it straight into 3.9

 - Improved platform support, in particular the Netlogic XLR and
   BCM63xx, and the SEAD3 and Malta eval boards.

 - Support for several Ralink SOC families.

 - Complete support for the microMIPS ASE which basically reencodes the
   existing MIPS32/MIPS64 ISA to use non-constant size instructions.

 - Some fallout from LTO work which remove old cruft and will generally
   make the MIPS kernel easier to maintain and resistant to compiler
   optimization, even in absence of LTO.

 - KVM support.  While MIPS has announced hardware virtualization
   extensions this KVM extension uses trap and emulate mode for
   virtualization of MIPS32.  More KVM work to add support for VZ
   hardware virtualizaiton extensions and MIPS64 will probably already
   be merged for 3.11.

Most of this has been sitting in -next for a long time.  All defconfigs
have been build or run time tested except three for which fixes are being
sent by other maintainers.

Semantic conflict with kvm updates done as per Ralf

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (118 commits)
  MIPS: Add new GIC clockevent driver.
  MIPS: Formatting clean-ups for clocksources.
  MIPS: Refactor GIC clocksource code.
  MIPS: Move 'gic_frequency' to common location.
  MIPS: Move 'gic_present' to common location.
  MIPS: MIPS16e: Add unaligned access support.
  MIPS: MIPS16e: Support handling of delay slots.
  MIPS: MIPS16e: Add instruction formats.
  MIPS: microMIPS: Optimise 'strnlen' core library function.
  MIPS: microMIPS: Optimise 'strlen' core library function.
  MIPS: microMIPS: Optimise 'strncpy' core library function.
  MIPS: microMIPS: Optimise 'memset' core library function.
  MIPS: microMIPS: Add configuration option for microMIPS kernel.
  MIPS: microMIPS: Disable LL/SC and fix linker bug.
  MIPS: microMIPS: Add vdso support.
  MIPS: microMIPS: Add unaligned access support.
  MIPS: microMIPS: Support handling of delay slots.
  MIPS: microMIPS: Add support for exception handling.
  MIPS: microMIPS: Floating point support.
  MIPS: microMIPS: Fix macro naming in micro-assembler.
  ...

1 files changed, 143 insertions, 0 deletions

diff --git a/arch/mips/ralink/rt288x.c b/arch/mips/ralink/rt288x.c
new file mode 100644
index 00000000000..f87de1ab219
--- /dev/null
+++ b/arch/mips/ralink/rt288x.c
@@ -0,0 +1,143 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Parts of this file are based on Ralink's 2.6.21 BSP
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <asm/mipsregs.h>
+#include <asm/mach-ralink/ralink_regs.h>
+#include <asm/mach-ralink/rt288x.h>
+
+#include "common.h"
+
+static struct ralink_pinmux_grp mode_mux[] = {
+	{
+		.name = "i2c",
+		.mask = RT2880_GPIO_MODE_I2C,
+		.gpio_first = 1,
+		.gpio_last = 2,
+	}, {
+		.name = "spi",
+		.mask = RT2880_GPIO_MODE_SPI,
+		.gpio_first = 3,
+		.gpio_last = 6,
+	}, {
+		.name = "uartlite",
+		.mask = RT2880_GPIO_MODE_UART0,
+		.gpio_first = 7,
+		.gpio_last = 14,
+	}, {
+		.name = "jtag",
+		.mask = RT2880_GPIO_MODE_JTAG,
+		.gpio_first = 17,
+		.gpio_last = 21,
+	}, {
+		.name = "mdio",
+		.mask = RT2880_GPIO_MODE_MDIO,
+		.gpio_first = 22,
+		.gpio_last = 23,
+	}, {
+		.name = "sdram",
+		.mask = RT2880_GPIO_MODE_SDRAM,
+		.gpio_first = 24,
+		.gpio_last = 39,
+	}, {
+		.name = "pci",
+		.mask = RT2880_GPIO_MODE_PCI,
+		.gpio_first = 40,
+		.gpio_last = 71,
+	}, {0}
+};
+
+static void rt288x_wdt_reset(void)
+{
+	u32 t;
+
+	/* enable WDT reset output on pin SRAM_CS_N */
+	t = rt_sysc_r32(SYSC_REG_CLKCFG);
+	t |= CLKCFG_SRAM_CS_N_WDT;
+	rt_sysc_w32(t, SYSC_REG_CLKCFG);
+}
+
+struct ralink_pinmux rt_gpio_pinmux = {
+	.mode = mode_mux,
+	.wdt_reset = rt288x_wdt_reset,
+};
+
+void __init ralink_clk_init(void)
+{
+	unsigned long cpu_rate;
+	u32 t = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG);
+	t = ((t >> SYSTEM_CONFIG_CPUCLK_SHIFT) & SYSTEM_CONFIG_CPUCLK_MASK);
+
+	switch (t) {
+	case SYSTEM_CONFIG_CPUCLK_250:
+		cpu_rate = 250000000;
+		break;
+	case SYSTEM_CONFIG_CPUCLK_266:
+		cpu_rate = 266666667;
+		break;
+	case SYSTEM_CONFIG_CPUCLK_280:
+		cpu_rate = 280000000;
+		break;
+	case SYSTEM_CONFIG_CPUCLK_300:
+		cpu_rate = 300000000;
+		break;
+	}
+
+	ralink_clk_add("cpu", cpu_rate);
+	ralink_clk_add("300100.timer", cpu_rate / 2);
+	ralink_clk_add("300120.watchdog", cpu_rate / 2);
+	ralink_clk_add("300500.uart", cpu_rate / 2);
+	ralink_clk_add("300c00.uartlite", cpu_rate / 2);
+	ralink_clk_add("400000.ethernet", cpu_rate / 2);
+}
+
+void __init ralink_of_remap(void)
+{
+	rt_sysc_membase = plat_of_remap_node("ralink,rt2880-sysc");
+	rt_memc_membase = plat_of_remap_node("ralink,rt2880-memc");
+
+	if (!rt_sysc_membase || !rt_memc_membase)
+		panic("Failed to remap core resources");
+}
+
+void prom_soc_init(struct ralink_soc_info *soc_info)
+{
+	void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT2880_SYSC_BASE);
+	const char *name;
+	u32 n0;
+	u32 n1;
+	u32 id;
+
+	n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
+	n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
+	id = __raw_readl(sysc + SYSC_REG_CHIP_ID);
+
+	if (n0 == RT2880_CHIP_NAME0 && n1 == RT2880_CHIP_NAME1) {
+		soc_info->compatible = "ralink,r2880-soc";
+		name = "RT2880";
+	} else {
+		panic("rt288x: unknown SoC, n0:%08x n1:%08x", n0, n1);
+	}
+
+	snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
+		"Ralink %s id:%u rev:%u",
+		name,
+		(id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
+		(id & CHIP_ID_REV_MASK));
+
+	soc_info->mem_base = RT2880_SDRAM_BASE;
+	soc_info->mem_size_min = RT2880_MEM_SIZE_MIN;
+	soc_info->mem_size_max = RT2880_MEM_SIZE_MAX;
+}