ARM: cns3xxx: Add CNS3420 Validation Board support

This patch adds support for CNS3420VB rev 1.3 boards. With this patch
CNS3420VB boards are able to boot up to the userspace, with a console
available on UART0.

Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>

1 files changed, 148 insertions, 0 deletions

diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c
new file mode 100644
index 000000000000..2e30c8288740
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -0,0 +1,148 @@
+/*
+ * Cavium Networks CNS3420 Validation Board
+ *
+ * Copyright 2000 Deep Blue Solutions Ltd
+ * Copyright 2008 ARM Limited
+ * Copyright 2008 Cavium Networks
+ *                Scott Shu
+ * Copyright 2010 MontaVista Software, LLC.
+ *                Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This file 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/init.h>
+#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/io.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/partitions.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <mach/hardware.h>
+#include <mach/cns3xxx.h>
+#include <mach/irqs.h>
+#include "core.h"
+
+/*
+ * NOR Flash
+ */
+static struct mtd_partition cns3420_nor_partitions[] = {
+        {
+                .name           = "uboot",
+                .size           = 0x00040000,
+                .offset         = 0,
+                .mask_flags     = MTD_WRITEABLE,
+        }, {
+                .name           = "kernel",
+                .size           = 0x004C0000,
+                .offset         = MTDPART_OFS_APPEND,
+        }, {
+                .name           = "filesystem",
+                .size           = 0x7000000,
+                .offset         = MTDPART_OFS_APPEND,
+        }, {
+                .name           = "filesystem2",
+                .size           = 0x0AE0000,
+                .offset         = MTDPART_OFS_APPEND,
+        }, {
+                .name           = "ubootenv",
+                .size           = MTDPART_SIZ_FULL,
+                .offset         = MTDPART_OFS_APPEND,
+        },
+};
+
+static struct physmap_flash_data cns3420_nor_pdata = {
+        .width = 2,
+        .parts = cns3420_nor_partitions,
+        .nr_parts = ARRAY_SIZE(cns3420_nor_partitions),
+};
+
+static struct resource cns3420_nor_res = {
+        .start = CNS3XXX_FLASH_BASE,
+        .end = CNS3XXX_FLASH_BASE + SZ_128M - 1,
+        .flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
+};
+
+static struct platform_device cns3420_nor_pdev = {
+        .name = "physmap-flash",
+        .id = 0,
+        .resource = &cns3420_nor_res,
+        .num_resources = 1,
+        .dev = {
+                .platform_data = &cns3420_nor_pdata,
+        },
+};
+
+/*
+ * UART
+ */
+static void __init cns3420_early_serial_setup(void)
+{
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+        static struct uart_port cns3420_serial_port = {
+                .membase        = (void __iomem *)CNS3XXX_UART0_BASE_VIRT,
+                .mapbase        = CNS3XXX_UART0_BASE,
+                .irq            = IRQ_CNS3XXX_UART0,
+                .iotype         = UPIO_MEM,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_FIXED_TYPE,
+                .regshift       = 2,
+                .uartclk        = 24000000,
+                .line           = 0,
+                .type           = PORT_16550A,
+                .fifosize       = 16,
+        };
+
+        early_serial_setup(&cns3420_serial_port);
+#endif
+}
+
+/*
+ * Initialization
+ */
+static struct platform_device *cns3420_pdevs[] __initdata = {
+        &cns3420_nor_pdev,
+};
+
+static void __init cns3420_init(void)
+{
+        platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
+
+        pm_power_off = cns3xxx_power_off;
+}
+
+static struct map_desc cns3420_io_desc[] __initdata = {
+        {
+                .virtual        = CNS3XXX_UART0_BASE_VIRT,
+                .pfn            = __phys_to_pfn(CNS3XXX_UART0_BASE),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        },
+};
+
+static void __init cns3420_map_io(void)
+{
+        cns3xxx_map_io();
+        iotable_init(cns3420_io_desc, ARRAY_SIZE(cns3420_io_desc));
+
+        cns3420_early_serial_setup();
+}
+
+MACHINE_START(CNS3420VB, "Cavium Networks CNS3420 Validation Board")
+        .phys_io        = CNS3XXX_UART0_BASE,
+        .io_pg_offst    = (CNS3XXX_UART0_BASE_VIRT >> 18) & 0xfffc,
+        .boot_params    = 0x00000100,
+        .map_io         = cns3420_map_io,
+        .init_irq       = cns3xxx_init_irq,
+        .timer          = &cns3xxx_timer,
+        .init_machine   = cns3420_init,
+MACHINE_END