ixp4xx: support omicron ixp425 based boards

This patch adds board support for the DEVIXP, the MICCPT, and the
MIC256, which are three IXP425 based boards produced by OMICRON
electronics, GmbH.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

5 files changed, 376 insertions, 1 deletions

diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index 6f991c5ae863..fd5e7b6881bf 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -179,6 +179,25 @@ config MACH_GTWX5715
                 "High Speed" UART is n/c (as far as I can tell)
                 20 Pin ARM/Xscale JTAG interface on J2
 
+config MACH_DEVIXP
+        bool "Omicron DEVIXP"
+        help
+          Say 'Y' here if you want your kernel to support the DEVIXP
+          board from OMICRON electronics GmbH.
+
+config MACH_MICCPT
+        bool "Omicron MICCPT"
+        select PCI
+        help
+          Say 'Y' here if you want your kernel to support the MICCPT
+          board from OMICRON electronics GmbH.
+
+config MACH_MIC256
+        bool "Omicron MIC256"
+        help
+          Say 'Y' here if you want your kernel to support the MIC256
+          board from OMICRON electronics GmbH.
+
 comment "IXP4xx Options"
 
 config IXP4XX_INDIRECT_PCI
diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
index d807fc367dd3..eded94c96dd4 100644
--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/arch/arm/mach-ixp4xx/Makefile
@@ -10,6 +10,7 @@ obj-pci-$(CONFIG_MACH_AVILA)		+= avila-pci.o
 obj-pci-$(CONFIG_MACH_IXDPG425)         += ixdpg425-pci.o
 obj-pci-$(CONFIG_ARCH_ADI_COYOTE)       += coyote-pci.o
 obj-pci-$(CONFIG_MACH_GTWX5715)         += gtwx5715-pci.o
+obj-pci-$(CONFIG_MACH_MICCPT)           += miccpt-pci.o
 obj-pci-$(CONFIG_MACH_NSLU2)            += nslu2-pci.o
 obj-pci-$(CONFIG_MACH_NAS100D)          += nas100d-pci.o
 obj-pci-$(CONFIG_MACH_DSMG600)          += dsmg600-pci.o
@@ -25,6 +26,9 @@ obj-$(CONFIG_MACH_AVILA)	+= avila-setup.o
 obj-$(CONFIG_MACH_IXDPG425)     += coyote-setup.o
 obj-$(CONFIG_ARCH_ADI_COYOTE)   += coyote-setup.o
 obj-$(CONFIG_MACH_GTWX5715)     += gtwx5715-setup.o
+obj-$(CONFIG_MACH_DEVIXP)       += omixp-setup.o
+obj-$(CONFIG_MACH_MICCPT)       += omixp-setup.o
+obj-$(CONFIG_MACH_MIC256)       += omixp-setup.o
 obj-$(CONFIG_MACH_NSLU2)        += nslu2-setup.o
 obj-$(CONFIG_MACH_NAS100D)      += nas100d-setup.o
 obj-$(CONFIG_MACH_DSMG600)      += dsmg600-setup.o
diff --git a/arch/arm/mach-ixp4xx/include/mach/uncompress.h b/arch/arm/mach-ixp4xx/include/mach/uncompress.h
index 219d7c1dcdba..eb945a926d07 100644
--- a/arch/arm/mach-ixp4xx/include/mach/uncompress.h
+++ b/arch/arm/mach-ixp4xx/include/mach/uncompress.h
@@ -41,7 +41,8 @@ static __inline__ void __arch_decomp_setup(unsigned long arch_id)
          * Some boards are using UART2 as console
          */
         if (machine_is_adi_coyote() || machine_is_gtwx5715() ||
-                         machine_is_gateway7001() || machine_is_wg302v2())
+            machine_is_gateway7001() || machine_is_wg302v2() ||
+            machine_is_devixp() || machine_is_miccpt() || machine_is_mic256())
                 uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
         else
                 uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;
diff --git a/arch/arm/mach-ixp4xx/miccpt-pci.c b/arch/arm/mach-ixp4xx/miccpt-pci.c
new file mode 100644
index 000000000000..ca0bae7fca90
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/miccpt-pci.c
@@ -0,0 +1,78 @@
+/*
+ * arch/arm/mach-ixp4xx/miccpt-pci.c
+ *
+ * MICCPT board-level PCI initialization
+ *
+ * Copyright (C) 2002 Intel Corporation.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ * Copyright (C) 2006 OMICRON electronics GmbH
+ *
+ * Author: Michael Jochum <michael.jochum@omicron.at>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <asm/mach/pci.h>
+#include <asm/irq.h>
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+
+#define MAX_DEV         4
+#define IRQ_LINES       4
+
+/* PCI controller GPIO to IRQ pin mappings */
+#define INTA            1
+#define INTB            2
+#define INTC            3
+#define INTD            4
+
+
+void __init miccpt_pci_preinit(void)
+{
+        irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW);
+        irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW);
+        irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW);
+        irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW);
+        ixp4xx_pci_preinit();
+}
+
+static int __init miccpt_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+        static int pci_irq_table[IRQ_LINES] = {
+                IXP4XX_GPIO_IRQ(INTA),
+                IXP4XX_GPIO_IRQ(INTB),
+                IXP4XX_GPIO_IRQ(INTC),
+                IXP4XX_GPIO_IRQ(INTD)
+        };
+
+        if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES)
+                return pci_irq_table[(slot + pin - 2) % 4];
+
+        return -1;
+}
+
+struct hw_pci miccpt_pci __initdata = {
+        .nr_controllers = 1,
+        .preinit        = miccpt_pci_preinit,
+        .swizzle        = pci_std_swizzle,
+        .setup          = ixp4xx_setup,
+        .scan           = ixp4xx_scan_bus,
+        .map_irq        = miccpt_map_irq,
+};
+
+int __init miccpt_pci_init(void)
+{
+        if (machine_is_miccpt())
+                pci_common_init(&miccpt_pci);
+        return 0;
+}
+
+subsys_initcall(miccpt_pci_init);
diff --git a/arch/arm/mach-ixp4xx/omixp-setup.c b/arch/arm/mach-ixp4xx/omixp-setup.c
new file mode 100644
index 000000000000..4dfdc69c53c3
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/omixp-setup.c
@@ -0,0 +1,273 @@
+/*
+ * arch/arm/mach-ixp4xx/omixp-setup.c
+ *
+ * omicron ixp4xx board setup
+ *      Copyright (C) 2009 OMICRON electronics GmbH
+ *
+ * based nslu2-setup.c, ixdp425-setup.c:
+ *      Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#ifdef CONFIG_LEDS_CLASS
+#include <linux/leds.h>
+#endif
+
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+
+static struct resource omixp_flash_resources[] = {
+        {
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct mtd_partition omixp_partitions[] = {
+        {
+                .name =         "Recovery Bootloader",
+                .size =         0x00020000,
+                .offset =       0,
+        }, {
+                .name =         "Calibration Data",
+                .size =         0x00020000,
+                .offset =       0x00020000,
+        }, {
+                .name =         "Recovery FPGA",
+                .size =         0x00020000,
+                .offset =       0x00040000,
+        }, {
+                .name =         "Release Bootloader",
+                .size =         0x00020000,
+                .offset =       0x00060000,
+        }, {
+                .name =         "Release FPGA",
+                .size =         0x00020000,
+                .offset =       0x00080000,
+        }, {
+                .name =         "Kernel",
+                .size =         0x00160000,
+                .offset =       0x000a0000,
+        }, {
+                .name =         "Filesystem",
+                .size =         0x00C00000,
+                .offset =       0x00200000,
+        }, {
+                .name =         "Persistent Storage",
+                .size =         0x00200000,
+                .offset =       0x00E00000,
+        },
+};
+
+static struct flash_platform_data omixp_flash_data[] = {
+        {
+                .map_name       = "cfi_probe",
+                .parts          = omixp_partitions,
+                .nr_parts       = ARRAY_SIZE(omixp_partitions),
+        }, {
+                .map_name       = "cfi_probe",
+                .parts          = NULL,
+                .nr_parts       = 0,
+        },
+};
+
+static struct platform_device omixp_flash_device[] = {
+        {
+                .name           = "IXP4XX-Flash",
+                .id             = 0,
+                .dev = {
+                        .platform_data = &omixp_flash_data[0],
+                },
+                .resource = &omixp_flash_resources[0],
+                .num_resources = 1,
+        }, {
+                .name           = "IXP4XX-Flash",
+                .id             = 1,
+                .dev = {
+                        .platform_data = &omixp_flash_data[1],
+                },
+                .resource = &omixp_flash_resources[1],
+                .num_resources = 1,
+        },
+};
+
+/* Swap UART's - These boards have the console on UART2. The following
+ * configuration is used:
+ *      ttyS0 .. UART2
+ *      ttyS1 .. UART1
+ * This way standard images can be used with the kernel that expect
+ * the console on ttyS0.
+ */
+static struct resource omixp_uart_resources[] = {
+        {
+                .start          = IXP4XX_UART2_BASE_PHYS,
+                .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
+                .flags          = IORESOURCE_MEM,
+        }, {
+                .start          = IXP4XX_UART1_BASE_PHYS,
+                .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
+                .flags          = IORESOURCE_MEM,
+        },
+};
+
+static struct plat_serial8250_port omixp_uart_data[] = {
+        {
+                .mapbase        = IXP4XX_UART2_BASE_PHYS,
+                .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
+                .irq            = IRQ_IXP4XX_UART2,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 2,
+                .uartclk        = IXP4XX_UART_XTAL,
+        }, {
+                .mapbase        = IXP4XX_UART1_BASE_PHYS,
+                .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
+                .irq            = IRQ_IXP4XX_UART1,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 2,
+                .uartclk        = IXP4XX_UART_XTAL,
+        }, {
+                /* list termination */
+        }
+};
+
+static struct platform_device omixp_uart = {
+        .name                   = "serial8250",
+        .id                     = PLAT8250_DEV_PLATFORM,
+        .dev.platform_data      = omixp_uart_data,
+        .num_resources          = 2,
+        .resource               = omixp_uart_resources,
+};
+
+static struct gpio_led mic256_led_pins[] = {
+        {
+                .name           = "LED-A",
+                .gpio           = 7,
+        },
+};
+
+static struct gpio_led_platform_data mic256_led_data = {
+        .num_leds               = ARRAY_SIZE(mic256_led_pins),
+        .leds                   = mic256_led_pins,
+};
+
+static struct platform_device mic256_leds = {
+        .name                   = "leds-gpio",
+        .id                     = -1,
+        .dev.platform_data      = &mic256_led_data,
+};
+
+/* Built-in 10/100 Ethernet MAC interfaces */
+static struct eth_plat_info ixdp425_plat_eth[] = {
+        {
+                .phy            = 0,
+                .rxq            = 3,
+                .txreadyq       = 20,
+        }, {
+                .phy            = 1,
+                .rxq            = 4,
+                .txreadyq       = 21,
+        },
+};
+
+static struct platform_device ixdp425_eth[] = {
+        {
+                .name                   = "ixp4xx_eth",
+                .id                     = IXP4XX_ETH_NPEB,
+                .dev.platform_data      = ixdp425_plat_eth,
+        }, {
+                .name                   = "ixp4xx_eth",
+                .id                     = IXP4XX_ETH_NPEC,
+                .dev.platform_data      = ixdp425_plat_eth + 1,
+        },
+};
+
+
+static struct platform_device *devixp_pldev[] __initdata = {
+        &omixp_uart,
+        &omixp_flash_device[0],
+        &ixdp425_eth[0],
+        &ixdp425_eth[1],
+};
+
+static struct platform_device *mic256_pldev[] __initdata = {
+        &omixp_uart,
+        &omixp_flash_device[0],
+        &mic256_leds,
+        &ixdp425_eth[0],
+        &ixdp425_eth[1],
+};
+
+static struct platform_device *miccpt_pldev[] __initdata = {
+        &omixp_uart,
+        &omixp_flash_device[0],
+        &omixp_flash_device[1],
+        &ixdp425_eth[0],
+        &ixdp425_eth[1],
+};
+
+static void __init omixp_init(void)
+{
+        ixp4xx_sys_init();
+
+        /* 16MiB Boot Flash */
+        omixp_flash_resources[0].start = IXP4XX_EXP_BUS_BASE(0);
+        omixp_flash_resources[0].end   = IXP4XX_EXP_BUS_END(0);
+
+        /* 32 MiB Data Flash */
+        omixp_flash_resources[1].start = IXP4XX_EXP_BUS_BASE(2);
+        omixp_flash_resources[1].end   = IXP4XX_EXP_BUS_END(2);
+
+        if (machine_is_devixp())
+                platform_add_devices(devixp_pldev, ARRAY_SIZE(devixp_pldev));
+        else if (machine_is_miccpt())
+                platform_add_devices(miccpt_pldev, ARRAY_SIZE(miccpt_pldev));
+        else if (machine_is_mic256())
+                platform_add_devices(mic256_pldev, ARRAY_SIZE(mic256_pldev));
+}
+
+#ifdef CONFIG_MACH_DEVIXP
+MACHINE_START(DEVIXP, "Omicron DEVIXP")
+        .boot_params    = 0x100,
+        .map_io         = ixp4xx_map_io,
+        .init_irq       = ixp4xx_init_irq,
+        .timer          = &ixp4xx_timer,
+        .init_machine   = omixp_init,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_MICCPT
+MACHINE_START(MICCPT, "Omicron MICCPT")
+        .boot_params    = 0x100,
+        .map_io         = ixp4xx_map_io,
+        .init_irq       = ixp4xx_init_irq,
+        .timer          = &ixp4xx_timer,
+        .init_machine   = omixp_init,
+#if defined(CONFIG_PCI)
+        .dma_zone_size  = SZ_64M,
+#endif
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_MIC256
+MACHINE_START(MIC256, "Omicron MIC256")
+        .boot_params    = 0x100,
+        .map_io         = ixp4xx_map_io,
+        .init_irq       = ixp4xx_init_irq,
+        .timer          = &ixp4xx_timer,
+        .init_machine   = omixp_init,
+MACHINE_END
+#endif