MIPS: Alchemy: Add basic support for the GPR board

From: Wolfgang Grandegger <wg@denx.de>

Add basic support for the General Purpose Router (GPR) board from
Trapeze ITS.

Signed-off-by: Wolfgang Grandegger <wg@denx.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1460/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

6 files changed, 361 insertions, 0 deletions

diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig
index 1179c4d4cf15..2ccfd4a135bc 100644
--- a/arch/mips/alchemy/Kconfig
+++ b/arch/mips/alchemy/Kconfig
@@ -128,6 +128,15 @@ config MIPS_XXS1500
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_HAS_EARLY_PRINTK
 
+config MIPS_GPR
+        bool "Trapeze ITS GPR board"
+        select SOC_AU1550
+        select HW_HAS_PCI
+        select DMA_NONCOHERENT
+        select MIPS_DISABLE_OBSOLETE_IDE
+        select SYS_SUPPORTS_LITTLE_ENDIAN
+        select SYS_HAS_EARLY_PRINTK
+
 endchoice
 
 config SOC_AU1000
diff --git a/arch/mips/alchemy/Platform b/arch/mips/alchemy/Platform
index 0bf2b09f3105..96e9e41f1b2a 100644
--- a/arch/mips/alchemy/Platform
+++ b/arch/mips/alchemy/Platform
@@ -100,6 +100,11 @@ load-$(CONFIG_MIPS_MTX1)	+= 0xffffffff80100000
 platform-$(CONFIG_MIPS_XXS1500) += alchemy/xxs1500/
 load-$(CONFIG_MIPS_XXS1500)     += 0xffffffff80100000
 
+#
+# Trapeze ITS GRP board
+#
+platform-$(CONFIG_MIPS_GPR)     += alchemy/gpr/
+load-$(CONFIG_MIPS_GPR)         += 0xffffffff80100000
 
 # boards can specify their own <gpio.h> in one of their include dirs.
 # If they do, placing this line here at the end will make sure the
diff --git a/arch/mips/alchemy/gpr/Makefile b/arch/mips/alchemy/gpr/Makefile
new file mode 100644
index 000000000000..cb73fe256dce
--- /dev/null
+++ b/arch/mips/alchemy/gpr/Makefile
@@ -0,0 +1,8 @@
+#
+#  Copyright 2003 MontaVista Software Inc.
+#  Author: MontaVista Software, Inc. <source@mvista.com>
+#
+# Makefile for Trapeze ITS GPR board.
+#
+
+obj-y += board_setup.o init.o platform.o
diff --git a/arch/mips/alchemy/gpr/board_setup.c b/arch/mips/alchemy/gpr/board_setup.c
new file mode 100644
index 000000000000..ad2e3f137933
--- /dev/null
+++ b/arch/mips/alchemy/gpr/board_setup.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2010 Wolfgang Grandegger <wg@denx.de>
+ *
+ * Copyright 2000-2003, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ *  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;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+
+#include <asm/reboot.h>
+#include <asm/mach-au1x00/au1000.h>
+
+#include <prom.h>
+
+#define UART1_ADDR      KSEG1ADDR(UART1_PHYS_ADDR)
+#define UART3_ADDR      KSEG1ADDR(UART3_PHYS_ADDR)
+
+char irq_tab_alchemy[][5] __initdata = {
+        [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff },
+};
+
+static void gpr_reset(char *c)
+{
+        /* switch System-LED to orange (red# and green# on) */
+        alchemy_gpio_direction_output(4, 0);
+        alchemy_gpio_direction_output(5, 0);
+
+        /* trigger watchdog to reset board in 200ms */
+        printk(KERN_EMERG "Triggering watchdog soft reset...\n");
+        raw_local_irq_disable();
+        alchemy_gpio_direction_output(1, 0);
+        udelay(1);
+        alchemy_gpio_set_value(1, 1);
+        while (1)
+                cpu_wait();
+}
+
+static void gpr_power_off(void)
+{
+        while (1)
+                cpu_wait();
+}
+
+void __init board_setup(void)
+{
+        printk(KERN_INFO "Tarpeze ITS GPR board\n");
+
+        pm_power_off = gpr_power_off;
+        _machine_halt = gpr_power_off;
+        _machine_restart = gpr_reset;
+
+        /* Enable UART3 */
+        au_writel(0x1, UART3_ADDR + UART_MOD_CNTRL);/* clock enable (CE) */
+        au_writel(0x3, UART3_ADDR + UART_MOD_CNTRL); /* CE and "enable" */
+        /* Enable UART1 */
+        au_writel(0x1, UART1_ADDR + UART_MOD_CNTRL); /* clock enable (CE) */
+        au_writel(0x3, UART1_ADDR + UART_MOD_CNTRL); /* CE and "enable" */
+
+        /* Take away Reset of UMTS-card */
+        alchemy_gpio_direction_output(215, 1);
+
+#ifdef CONFIG_PCI
+#if defined(__MIPSEB__)
+        au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
+#else
+        au_writel(0xf, Au1500_PCI_CFG);
+#endif
+#endif
+}
diff --git a/arch/mips/alchemy/gpr/init.c b/arch/mips/alchemy/gpr/init.c
new file mode 100644
index 000000000000..f044f4c541d7
--- /dev/null
+++ b/arch/mips/alchemy/gpr/init.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2010 Wolfgang Grandegger <wg@denx.de>
+ *
+ * Copyright 2003, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ *  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;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <asm/bootinfo.h>
+#include <asm/mach-au1x00/au1000.h>
+
+#include <prom.h>
+
+const char *get_system_type(void)
+{
+        return "GPR";
+}
+
+void __init prom_init(void)
+{
+        unsigned char *memsize_str;
+        unsigned long memsize;
+
+        prom_argc = fw_arg0;
+        prom_argv = (char **)fw_arg1;
+        prom_envp = (char **)fw_arg2;
+
+        prom_init_cmdline();
+
+        memsize_str = prom_getenv("memsize");
+        if (!memsize_str)
+                memsize = 0x04000000;
+        else
+                strict_strtoul(memsize_str, 0, &memsize);
+        add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
+
+void prom_putchar(unsigned char c)
+{
+        alchemy_uart_putchar(UART0_PHYS_ADDR, c);
+}
diff --git a/arch/mips/alchemy/gpr/platform.c b/arch/mips/alchemy/gpr/platform.c
new file mode 100644
index 000000000000..14b46629cfc8
--- /dev/null
+++ b/arch/mips/alchemy/gpr/platform.c
@@ -0,0 +1,183 @@
+/*
+ * GPR board platform device registration
+ *
+ * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+/*
+ * Watchdog
+ */
+static struct resource gpr_wdt_resource[] = {
+        [0] = {
+                .start  = 1,
+                .end    = 1,
+                .name   = "gpr-adm6320-wdt",
+                .flags  = IORESOURCE_IRQ,
+        }
+};
+
+static struct platform_device gpr_wdt_device = {
+        .name = "adm6320-wdt",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(gpr_wdt_resource),
+        .resource = gpr_wdt_resource,
+};
+
+/*
+ * FLASH
+ *
+ * 0x00000000-0x00200000 : "kernel"
+ * 0x00200000-0x00a00000 : "rootfs"
+ * 0x01d00000-0x01f00000 : "config"
+ * 0x01c00000-0x01d00000 : "yamon"
+ * 0x01d00000-0x01d40000 : "yamon env vars"
+ * 0x00000000-0x00a00000 : "kernel+rootfs"
+ */
+static struct mtd_partition gpr_mtd_partitions[] = {
+        {
+                .name   = "kernel",
+                .size   = 0x00200000,
+                .offset = 0,
+        },
+        {
+                .name   = "rootfs",
+                .size   = 0x00800000,
+                .offset = MTDPART_OFS_APPEND,
+                .mask_flags = MTD_WRITEABLE,
+        },
+        {
+                .name   = "config",
+                .size   = 0x00200000,
+                .offset = 0x01d00000,
+        },
+        {
+                .name   = "yamon",
+                .size   = 0x00100000,
+                .offset = 0x01c00000,
+        },
+        {
+                .name   = "yamon env vars",
+                .size   = 0x00040000,
+                .offset = MTDPART_OFS_APPEND,
+        },
+        {
+                .name   = "kernel+rootfs",
+                .size   = 0x00a00000,
+                .offset = 0,
+        },
+};
+
+static struct physmap_flash_data gpr_flash_data = {
+        .width          = 4,
+        .nr_parts       = ARRAY_SIZE(gpr_mtd_partitions),
+        .parts          = gpr_mtd_partitions,
+};
+
+static struct resource gpr_mtd_resource = {
+        .start  = 0x1e000000,
+        .end    = 0x1fffffff,
+        .flags  = IORESOURCE_MEM,
+};
+
+static struct platform_device gpr_mtd_device = {
+        .name           = "physmap-flash",
+        .dev            = {
+                .platform_data  = &gpr_flash_data,
+        },
+        .num_resources  = 1,
+        .resource       = &gpr_mtd_resource,
+};
+
+/*
+ * LEDs
+ */
+static struct gpio_led gpr_gpio_leds[] = {
+        {       /* green */
+                .name                   = "gpr:green",
+                .gpio                   = 4,
+                .active_low             = 1,
+        },
+        {       /* red */
+                .name                   = "gpr:red",
+                .gpio                   = 5,
+                .active_low             = 1,
+        }
+};
+
+static struct gpio_led_platform_data gpr_led_data = {
+        .num_leds = ARRAY_SIZE(gpr_gpio_leds),
+        .leds = gpr_gpio_leds,
+};
+
+static struct platform_device gpr_led_devices = {
+        .name = "leds-gpio",
+        .id = -1,
+        .dev = {
+                .platform_data = &gpr_led_data,
+        }
+};
+
+/*
+ * I2C
+ */
+static struct i2c_gpio_platform_data gpr_i2c_data = {
+        .sda_pin                = 209,
+        .sda_is_open_drain      = 1,
+        .scl_pin                = 210,
+        .scl_is_open_drain      = 1,
+        .udelay                 = 2,            /* ~100 kHz */
+        .timeout                = HZ,
+ };
+
+static struct platform_device gpr_i2c_device = {
+        .name                   = "i2c-gpio",
+        .id                     = -1,
+        .dev.platform_data      = &gpr_i2c_data,
+};
+
+static struct i2c_board_info gpr_i2c_info[] __initdata = {
+        {
+                I2C_BOARD_INFO("lm83", 0x18),
+                .type = "lm83"
+        }
+};
+
+static struct platform_device *gpr_devices[] __initdata = {
+        &gpr_wdt_device,
+        &gpr_mtd_device,
+        &gpr_i2c_device,
+        &gpr_led_devices,
+};
+
+static int __init gpr_dev_init(void)
+{
+        i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));
+
+        return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
+}
+device_initcall(gpr_dev_init);