arch/arm/mach-sa1100/shannon.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/shannon.c
   3  */
   4
   5 #include <linux/init.h>
   6 #include <linux/device.h>
   7 #include <linux/kernel.h>
   8 #include <linux/tty.h>
   9 #include <linux/mtd/mtd.h>
  10 #include <linux/mtd/partitions.h>
  11
  12 #include <mach/hardware.h>
  13 #include <asm/mach-types.h>
  14 #include <asm/setup.h>
  15
  16 #include <asm/mach/arch.h>
  17 #include <asm/mach/flash.h>
  18 #include <asm/mach/map.h>
  19 #include <asm/mach/serial_sa1100.h>
  20 #include <mach/mcp.h>
  21 #include <mach/shannon.h>
  22
  23 #include "generic.h"
  24
  25 static struct mtd_partition shannon_partitions[] = {
  26         {
  27                 .name           = "BLOB boot loader",
  28                 .offset         = 0,
  29                 .size           = 0x20000
  30         },
  31         {
  32                 .name           = "kernel",
  33                 .offset         = MTDPART_OFS_APPEND,
  34                 .size           = 0xe0000
  35         },
  36         {
  37                 .name           = "initrd",
  38                 .offset         = MTDPART_OFS_APPEND,
  39                 .size           = MTDPART_SIZ_FULL
  40         }
  41 };
  42
  43 static struct flash_platform_data shannon_flash_data = {
  44         .map_name       = "cfi_probe",
  45         .parts          = shannon_partitions,
  46         .nr_parts       = ARRAY_SIZE(shannon_partitions),
  47 };
  48
  49 static struct resource shannon_flash_resource = {
  50         .start          = SA1100_CS0_PHYS,
  51         .end            = SA1100_CS0_PHYS + SZ_4M - 1,
  52         .flags          = IORESOURCE_MEM,
  53 };
  54
  55 static struct mcp_plat_data shannon_mcp_data = {
  56         .mccr0          = MCCR0_ADM,
  57         .sclk_rate      = 11981000,
  58         .codec          = "ucb1x00",
  59 };
  60
  61 static void __init shannon_init(void)
  62 {
  63         sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1);
  64
  65         /*
  66          * Setup the PPC unit correctly.
  67          */
  68         PPDR &= ~PPC_RXD4;
  69         PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
  70         PSDR |= PPC_RXD4;
  71         PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
  72         PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
  73
  74         sa11x0_register_mcp(&shannon_mcp_data);
  75 }
  76
  77 static void __init shannon_map_io(void)
  78 {
  79         sa1100_map_io();
  80
  81         sa1100_register_uart(0, 3);
  82         sa1100_register_uart(1, 1);
  83
  84         Ser1SDCR0 |= SDCR0_SUS;
  85         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
  86         GPDR |= GPIO_UART_TXD | SHANNON_GPIO_CODEC_RESET;
  87         GPDR &= ~GPIO_UART_RXD;
  88         PPAR |= PPAR_UPR;
  89
  90         /* reset the codec */
  91         GPCR = SHANNON_GPIO_CODEC_RESET;
  92         GPSR = SHANNON_GPIO_CODEC_RESET;
  93 }
  94
  95 MACHINE_START(SHANNON, "Shannon (AKA: Tuxscreen)")
  96         .atag_offset    = 0x100,
  97         .map_io         = shannon_map_io,
  98         .init_irq       = sa1100_init_irq,
  99         .timer          = &sa1100_timer,
 100         .init_machine   = shannon_init,
 101         .restart        = sa11x0_restart,
 102 MACHINE_END