release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-s5pv310/mach-universal_c210.c

   1 /* linux/arch/arm/mach-s5pv310/mach-universal_c210.c
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8 */
   9
  10 #include <linux/serial_core.h>
  11
  12 #include <asm/mach/arch.h>
  13 #include <asm/mach-types.h>
  14 #include <asm/hardware/cache-l2x0.h>
  15
  16 #include <plat/regs-serial.h>
  17 #include <plat/s5pv310.h>
  18 #include <plat/cpu.h>
  19
  20 #include <mach/map.h>
  21
  22 /* Following are default values for UCON, ULCON and UFCON UART registers */
  23 #define UNIVERSAL_UCON_DEFAULT  (S3C2410_UCON_TXILEVEL |        \
  24                                  S3C2410_UCON_RXILEVEL |        \
  25                                  S3C2410_UCON_TXIRQMODE |       \
  26                                  S3C2410_UCON_RXIRQMODE |       \
  27                                  S3C2410_UCON_RXFIFO_TOI |      \
  28                                  S3C2443_UCON_RXERR_IRQEN)
  29
  30 #define UNIVERSAL_ULCON_DEFAULT S3C2410_LCON_CS8
  31
  32 #define UNIVERSAL_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE |       \
  33                                  S5PV210_UFCON_TXTRIG256 |      \
  34                                  S5PV210_UFCON_RXTRIG256)
  35
  36 static struct s3c2410_uartcfg universal_uartcfgs[] __initdata = {
  37         [0] = {
  38                 .hwport         = 0,
  39                 .ucon           = UNIVERSAL_UCON_DEFAULT,
  40                 .ulcon          = UNIVERSAL_ULCON_DEFAULT,
  41                 .ufcon          = UNIVERSAL_UFCON_DEFAULT,
  42         },
  43         [1] = {
  44                 .hwport         = 1,
  45                 .ucon           = UNIVERSAL_UCON_DEFAULT,
  46                 .ulcon          = UNIVERSAL_ULCON_DEFAULT,
  47                 .ufcon          = UNIVERSAL_UFCON_DEFAULT,
  48         },
  49         [2] = {
  50                 .hwport         = 2,
  51                 .ucon           = UNIVERSAL_UCON_DEFAULT,
  52                 .ulcon          = UNIVERSAL_ULCON_DEFAULT,
  53                 .ufcon          = UNIVERSAL_UFCON_DEFAULT,
  54         },
  55         [3] = {
  56                 .hwport         = 3,
  57                 .ucon           = UNIVERSAL_UCON_DEFAULT,
  58                 .ulcon          = UNIVERSAL_ULCON_DEFAULT,
  59                 .ufcon          = UNIVERSAL_UFCON_DEFAULT,
  60         },
  61 };
  62
  63 static void __init universal_map_io(void)
  64 {
  65         s5p_init_io(NULL, 0, S5P_VA_CHIPID);
  66         s3c24xx_init_clocks(24000000);
  67         s3c24xx_init_uarts(universal_uartcfgs, ARRAY_SIZE(universal_uartcfgs));
  68 }
  69
  70 static void __init universal_machine_init(void)
  71 {
  72 #ifdef CONFIG_CACHE_L2X0
  73         l2x0_init(S5P_VA_L2CC, 1 << 28, 0xffffffff);
  74 #endif
  75 }
  76
  77 MACHINE_START(UNIVERSAL_C210, "UNIVERSAL_C210")
  78         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
  79         .phys_io        = S3C_PA_UART & 0xfff00000,
  80         .io_pg_offst    = (((u32)S3C_VA_UART) >> 18) & 0xfffc,
  81         .boot_params    = S5P_PA_SDRAM + 0x100,
  82         .init_irq       = s5pv310_init_irq,
  83         .map_io         = universal_map_io,
  84         .init_machine   = universal_machine_init,
  85         .timer          = &s5pv310_timer,
  86 MACHINE_END