arch/arm/mach-spear13xx/spear1310.c

   1 /*
   2  * arch/arm/mach-spear13xx/spear1310.c
   3  *
   4  * SPEAr1310 machine source file
   5  *
   6  * Copyright (C) 2012 ST Microelectronics
   7  * Viresh Kumar <viresh.linux@gmail.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #define pr_fmt(fmt) "SPEAr1310: " fmt
  15
  16 #include <linux/amba/pl022.h>
  17 #include <linux/of_platform.h>
  18 #include <asm/hardware/gic.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/map.h>
  21 #include <mach/generic.h>
  22 #include <mach/spear.h>
  23
  24 /* Base addresses */
  25 #define SPEAR1310_SSP1_BASE                     UL(0x5D400000)
  26 #define SPEAR1310_SATA0_BASE                    UL(0xB1000000)
  27 #define SPEAR1310_SATA1_BASE                    UL(0xB1800000)
  28 #define SPEAR1310_SATA2_BASE                    UL(0xB4000000)
  29
  30 /* ssp device registration */
  31 static struct pl022_ssp_controller ssp1_plat_data = {
  32         .bus_id = 0,
  33         .enable_dma = 0,
  34         .num_chipselect = 3,
  35 };
  36
  37 /* Add SPEAr1310 auxdata to pass platform data */
  38 static struct of_dev_auxdata spear1310_auxdata_lookup[] __initdata = {
  39         OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_dma_priv),
  40         OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data),
  41         OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data),
  42         OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data),
  43
  44         OF_DEV_AUXDATA("arm,pl022", SPEAR1310_SSP1_BASE, NULL, &ssp1_plat_data),
  45         {}
  46 };
  47
  48 static void __init spear1310_dt_init(void)
  49 {
  50         of_platform_populate(NULL, of_default_bus_match_table,
  51                         spear1310_auxdata_lookup, NULL);
  52 }
  53
  54 static const char * const spear1310_dt_board_compat[] = {
  55         "st,spear1310",
  56         "st,spear1310-evb",
  57         NULL,
  58 };
  59
  60 /*
  61  * Following will create 16MB static virtual/physical mappings
  62  * PHYSICAL             VIRTUAL
  63  * 0xD8000000           0xFA000000
  64  */
  65 struct map_desc spear1310_io_desc[] __initdata = {
  66         {
  67                 .virtual        = VA_SPEAR1310_RAS_GRP1_BASE,
  68                 .pfn            = __phys_to_pfn(SPEAR1310_RAS_GRP1_BASE),
  69                 .length         = SZ_16M,
  70                 .type           = MT_DEVICE
  71         },
  72 };
  73
  74 static void __init spear1310_map_io(void)
  75 {
  76         iotable_init(spear1310_io_desc, ARRAY_SIZE(spear1310_io_desc));
  77         spear13xx_map_io();
  78 }
  79
  80 DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
  81         .map_io         =       spear1310_map_io,
  82         .init_irq       =       spear13xx_dt_init_irq,
  83         .handle_irq     =       gic_handle_irq,
  84         .timer          =       &spear13xx_timer,
  85         .init_machine   =       spear1310_dt_init,
  86         .restart        =       spear_restart,
  87         .dt_compat      =       spear1310_dt_board_compat,
  88 MACHINE_END