[ARM] 4476/1: EM7210/SS4000E support

This patch adds the basic support for the em7210 board. It is similar to
the iq31244 board and can be found on Intel "Baxter Creek" ss4000e nas.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

5 files changed, 213 insertions, 2 deletions

diff --git a/arch/arm/mach-iop32x/Kconfig b/arch/arm/mach-iop32x/Kconfig
index 9bb02b6d7ae1..dbe07c9472ed 100644
--- a/arch/arm/mach-iop32x/Kconfig
+++ b/arch/arm/mach-iop32x/Kconfig
@@ -42,6 +42,13 @@ config IOP3XX_ATU
           Say N if the IOP is an add in card, the host system owns the PCI
           bus in this case.
 
+config MACH_EM7210
+        bool "Enable support for the Lanner EM7210"
+        help
+          Say Y here if you want to run your kernel on the Lanner EM7210
+          board. Say also Y here if you have a SS4000e Baxter Creek NAS
+          appliance."
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-iop32x/Makefile b/arch/arm/mach-iop32x/Makefile
index 7b05b37e1f94..cfdf8a137c2b 100644
--- a/arch/arm/mach-iop32x/Makefile
+++ b/arch/arm/mach-iop32x/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_MACH_GLANTANK) += glantank.o
 obj-$(CONFIG_ARCH_IQ80321) += iq80321.o
 obj-$(CONFIG_ARCH_IQ31244) += iq31244.o
 obj-$(CONFIG_MACH_N2100) += n2100.o
+obj-$(CONFIG_MACH_EM7210) += em7210.o
diff --git a/arch/arm/mach-iop32x/em7210.c b/arch/arm/mach-iop32x/em7210.c
new file mode 100644
index 000000000000..f0362053fdcc
--- /dev/null
+++ b/arch/arm/mach-iop32x/em7210.c
@@ -0,0 +1,202 @@
+/*
+ * arch/arm/mach-iop32x/em7210.c
+ *
+ * Board support code for the Lanner EM7210 platforms.
+ *
+ * Based on arch/arm/mach-iop32x/iq31244.c file.
+ *
+ * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
+ *
+ * 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/mm.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <asm/hardware.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/pci.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <asm/arch/time.h>
+
+static void __init em7210_timer_init(void)
+{
+        /* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
+        /* 33.333 MHz crystal.                                */
+        iop_init_time(200000000);
+}
+
+static struct sys_timer em7210_timer = {
+        .init           = em7210_timer_init,
+        .offset         = iop_gettimeoffset,
+};
+
+
+/*
+ * EM7210 I/O
+ */
+static struct map_desc em7210_io_desc[] __initdata = {
+        {       /* on-board devices */
+                .virtual        = IQ31244_UART,
+                .pfn            = __phys_to_pfn(IQ31244_UART),
+                .length         = 0x00100000,
+                .type           = MT_DEVICE,
+        },
+};
+
+void __init em7210_map_io(void)
+{
+        iop3xx_map_io();
+        iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
+}
+
+
+/*
+ * EM7210 PCI
+ */
+#define INTA    IRQ_IOP32X_XINT0
+#define INTB    IRQ_IOP32X_XINT1
+#define INTC    IRQ_IOP32X_XINT2
+#define INTD    IRQ_IOP32X_XINT3
+
+static int __init
+em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        static int pci_irq_table[][4] = {
+                /*
+                 * PCI IDSEL/INTPIN->INTLINE
+                 * A       B       C       D
+                 */
+                {INTB, INTB, INTB, INTB}, /* console / uart */
+                {INTA, INTA, INTA, INTA}, /* 1st 82541      */
+                {INTD, INTD, INTD, INTD}, /* 2nd 82541      */
+                {INTC, INTC, INTC, INTC}, /* GD31244        */
+                {INTD, INTA, INTA, INTA}, /* mini-PCI       */
+                {INTD, INTC, INTA, INTA}, /* NEC USB        */
+        };
+
+        if (pin < 1 || pin > 4)
+                return -1;
+
+        return pci_irq_table[slot % 6][pin - 1];
+}
+
+static struct hw_pci em7210_pci __initdata = {
+        .swizzle        = pci_std_swizzle,
+        .nr_controllers = 1,
+        .setup          = iop3xx_pci_setup,
+        .preinit        = iop3xx_pci_preinit,
+        .scan           = iop3xx_pci_scan_bus,
+        .map_irq        = em7210_pci_map_irq,
+};
+
+static int __init em7210_pci_init(void)
+{
+        if (machine_is_em7210())
+                pci_common_init(&em7210_pci);
+
+        return 0;
+}
+
+subsys_initcall(em7210_pci_init);
+
+
+/*
+ * EM7210 Flash
+ */
+static struct physmap_flash_data em7210_flash_data = {
+        .width          = 2,
+};
+
+static struct resource em7210_flash_resource = {
+        .start          = 0xf0000000,
+        .end            = 0xf1ffffff,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device em7210_flash_device = {
+        .name           = "physmap-flash",
+        .id             = 0,
+        .dev            = {
+                .platform_data  = &em7210_flash_data,
+        },
+        .num_resources  = 1,
+        .resource       = &em7210_flash_resource,
+};
+
+
+/*
+ * EM7210 UART
+ * The physical address of the serial port is 0xfe800000,
+ * so it can be used for physical and virtual address.
+ */
+static struct plat_serial8250_port em7210_serial_port[] = {
+        {
+                .mapbase        = IQ31244_UART,
+                .membase        = (char *)IQ31244_UART,
+                .irq            = IRQ_IOP32X_XINT1,
+                .flags          = UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 0,
+                .uartclk        = 1843200,
+        },
+        { },
+};
+
+static struct resource em7210_uart_resource = {
+        .start          = IQ31244_UART,
+        .end            = IQ31244_UART + 7,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device em7210_serial_device = {
+        .name           = "serial8250",
+        .id             = PLAT8250_DEV_PLATFORM,
+        .dev            = {
+                .platform_data          = em7210_serial_port,
+        },
+        .num_resources  = 1,
+        .resource       = &em7210_uart_resource,
+};
+
+void em7210_power_off(void)
+{
+        *IOP3XX_GPOE &= 0xfe;
+        *IOP3XX_GPOD |= 0x01;
+}
+
+static void __init em7210_init_machine(void)
+{
+        platform_device_register(&em7210_serial_device);
+        platform_device_register(&iop3xx_i2c0_device);
+        platform_device_register(&iop3xx_i2c1_device);
+        platform_device_register(&em7210_flash_device);
+        platform_device_register(&iop3xx_dma_0_channel);
+        platform_device_register(&iop3xx_dma_1_channel);
+
+
+        pm_power_off = em7210_power_off;
+}
+
+MACHINE_START(EM7210, "Lanner EM7210")
+        .phys_io        = IQ31244_UART,
+        .io_pg_offst    = ((IQ31244_UART) >> 18) & 0xfffc,
+        .boot_params    = 0xa0000100,
+        .map_io         = em7210_map_io,
+        .init_irq       = iop32x_init_irq,
+        .timer          = &em7210_timer,
+        .init_machine   = em7210_init_machine,
+MACHINE_END
diff --git a/arch/arm/mach-iop32x/irq.c b/arch/arm/mach-iop32x/irq.c
index c971171c2905..55cf0162e8c1 100644
--- a/arch/arm/mach-iop32x/irq.c
+++ b/arch/arm/mach-iop32x/irq.c
@@ -63,7 +63,8 @@ void __init iop32x_init_irq(void)
         if (machine_is_glantank() ||
             machine_is_iq80321() ||
             machine_is_iq31244() ||
-            machine_is_n2100())
+            machine_is_n2100() ||
+            machine_is_em7210())
                 *IOP3XX_PCIIRSR = 0x0f;
 
         for (i = 0; i < NR_IRQS; i++) {
diff --git a/include/asm-arm/arch-iop32x/uncompress.h b/include/asm-arm/arch-iop32x/uncompress.h
index e64f52bf2bce..070f15818fe7 100644
--- a/include/asm-arm/arch-iop32x/uncompress.h
+++ b/include/asm-arm/arch-iop32x/uncompress.h
@@ -26,7 +26,7 @@ static __inline__ void __arch_decomp_setup(unsigned long arch_id)
 {
         if (machine_is_iq80321())
                 uart_base = (volatile u8 *)IQ80321_UART;
-        else if (machine_is_iq31244())
+        else if (machine_is_iq31244() || machine_is_em7210())
                 uart_base = (volatile u8 *)IQ31244_UART;
         else
                 uart_base = (volatile u8 *)0xfe800000;