arch/arm/mach-cns3xxx/cns3420vb.c

   1 /*
   2  * Cavium Networks CNS3420 Validation Board
   3  *
   4  * Copyright 2000 Deep Blue Solutions Ltd
   5  * Copyright 2008 ARM Limited
   6  * Copyright 2008 Cavium Networks
   7  *                Scott Shu
   8  * Copyright 2010 MontaVista Software, LLC.
   9  *                Anton Vorontsov <avorontsov@mvista.com>
  10  *
  11  * This file is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License, Version 2, as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/compiler.h>
  19 #include <linux/io.h>
  20 #include <linux/serial_core.h>
  21 #include <linux/serial_8250.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/mtd/partitions.h>
  26 #include <asm/setup.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/mach/time.h>
  31 #include <mach/hardware.h>
  32 #include <mach/cns3xxx.h>
  33 #include <mach/irqs.h>
  34 #include "core.h"
  35
  36 /*
  37  * NOR Flash
  38  */
  39 static struct mtd_partition cns3420_nor_partitions[] = {
  40         {
  41                 .name           = "uboot",
  42                 .size           = 0x00040000,
  43                 .offset         = 0,
  44                 .mask_flags     = MTD_WRITEABLE,
  45         }, {
  46                 .name           = "kernel",
  47                 .size           = 0x004C0000,
  48                 .offset         = MTDPART_OFS_APPEND,
  49         }, {
  50                 .name           = "filesystem",
  51                 .size           = 0x7000000,
  52                 .offset         = MTDPART_OFS_APPEND,
  53         }, {
  54                 .name           = "filesystem2",
  55                 .size           = 0x0AE0000,
  56                 .offset         = MTDPART_OFS_APPEND,
  57         }, {
  58                 .name           = "ubootenv",
  59                 .size           = MTDPART_SIZ_FULL,
  60                 .offset         = MTDPART_OFS_APPEND,
  61         },
  62 };
  63
  64 static struct physmap_flash_data cns3420_nor_pdata = {
  65         .width = 2,
  66         .parts = cns3420_nor_partitions,
  67         .nr_parts = ARRAY_SIZE(cns3420_nor_partitions),
  68 };
  69
  70 static struct resource cns3420_nor_res = {
  71         .start = CNS3XXX_FLASH_BASE,
  72         .end = CNS3XXX_FLASH_BASE + SZ_128M - 1,
  73         .flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
  74 };
  75
  76 static struct platform_device cns3420_nor_pdev = {
  77         .name = "physmap-flash",
  78         .id = 0,
  79         .resource = &cns3420_nor_res,
  80         .num_resources = 1,
  81         .dev = {
  82                 .platform_data = &cns3420_nor_pdata,
  83         },
  84 };
  85
  86 /*
  87  * UART
  88  */
  89 static void __init cns3420_early_serial_setup(void)
  90 {
  91 #ifdef CONFIG_SERIAL_8250_CONSOLE
  92         static struct uart_port cns3420_serial_port = {
  93                 .membase        = (void __iomem *)CNS3XXX_UART0_BASE_VIRT,
  94                 .mapbase        = CNS3XXX_UART0_BASE,
  95                 .irq            = IRQ_CNS3XXX_UART0,
  96                 .iotype         = UPIO_MEM,
  97                 .flags          = UPF_BOOT_AUTOCONF | UPF_FIXED_TYPE,
  98                 .regshift       = 2,
  99                 .uartclk        = 24000000,
 100                 .line           = 0,
 101                 .type           = PORT_16550A,
 102                 .fifosize       = 16,
 103         };
 104
 105         early_serial_setup(&cns3420_serial_port);
 106 #endif
 107 }
 108
 109 /*
 110  * Initialization
 111  */
 112 static struct platform_device *cns3420_pdevs[] __initdata = {
 113         &cns3420_nor_pdev,
 114 };
 115
 116 static void __init cns3420_init(void)
 117 {
 118         platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
 119
 120         pm_power_off = cns3xxx_power_off;
 121 }
 122
 123 static struct map_desc cns3420_io_desc[] __initdata = {
 124         {
 125                 .virtual        = CNS3XXX_UART0_BASE_VIRT,
 126                 .pfn            = __phys_to_pfn(CNS3XXX_UART0_BASE),
 127                 .length         = SZ_4K,
 128                 .type           = MT_DEVICE,
 129         },
 130 };
 131
 132 static void __init cns3420_map_io(void)
 133 {
 134         cns3xxx_map_io();
 135         iotable_init(cns3420_io_desc, ARRAY_SIZE(cns3420_io_desc));
 136
 137         cns3420_early_serial_setup();
 138 }
 139
 140 MACHINE_START(CNS3420VB, "Cavium Networks CNS3420 Validation Board")
 141         .phys_io        = CNS3XXX_UART0_BASE,
 142         .io_pg_offst    = (CNS3XXX_UART0_BASE_VIRT >> 18) & 0xfffc,
 143         .boot_params    = 0x00000100,
 144         .map_io         = cns3420_map_io,
 145         .init_irq       = cns3xxx_init_irq,
 146         .timer          = &cns3xxx_timer,
 147         .init_machine   = cns3420_init,
 148 MACHINE_END