arch/arm/mach-loki/common.c

   1 /*
   2  * arch/arm/mach-loki/common.c
   3  *
   4  * Core functions for Marvell Loki (88RC8480) SoCs
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/serial_8250.h>
  15 #include <linux/mbus.h>
  16 #include <linux/dma-mapping.h>
  17 #include <asm/page.h>
  18 #include <asm/timex.h>
  19 #include <asm/mach/map.h>
  20 #include <asm/mach/time.h>
  21 #include <mach/bridge-regs.h>
  22 #include <mach/loki.h>
  23 #include <plat/orion_nand.h>
  24 #include <plat/time.h>
  25 #include <plat/common.h>
  26 #include "common.h"
  27
  28 /*****************************************************************************
  29  * I/O Address Mapping
  30  ****************************************************************************/
  31 static struct map_desc loki_io_desc[] __initdata = {
  32         {
  33                 .virtual        = LOKI_REGS_VIRT_BASE,
  34                 .pfn            = __phys_to_pfn(LOKI_REGS_PHYS_BASE),
  35                 .length         = LOKI_REGS_SIZE,
  36                 .type           = MT_DEVICE,
  37         },
  38 };
  39
  40 void __init loki_map_io(void)
  41 {
  42         iotable_init(loki_io_desc, ARRAY_SIZE(loki_io_desc));
  43 }
  44
  45
  46 /*****************************************************************************
  47  * GE00
  48  ****************************************************************************/
  49 void __init loki_ge0_init(struct mv643xx_eth_platform_data *eth_data)
  50 {
  51         writel(0x00079220, GE0_VIRT_BASE + 0x20b0);
  52
  53         orion_ge00_init(eth_data, &loki_mbus_dram_info,
  54                         GE0_PHYS_BASE, IRQ_LOKI_GBE_A_INT,
  55                         0, LOKI_TCLK);
  56 }
  57
  58
  59 /*****************************************************************************
  60  * GE01
  61  ****************************************************************************/
  62 void __init loki_ge1_init(struct mv643xx_eth_platform_data *eth_data)
  63 {
  64         writel(0x00079220, GE1_VIRT_BASE + 0x20b0);
  65
  66         orion_ge01_init(eth_data, &loki_mbus_dram_info,
  67                         GE1_PHYS_BASE, IRQ_LOKI_GBE_B_INT,
  68                         0, LOKI_TCLK);
  69 }
  70
  71
  72 /*****************************************************************************
  73  * SAS/SATA
  74  ****************************************************************************/
  75 static struct resource loki_sas_resources[] = {
  76         {
  77                 .name   = "mvsas0 mem",
  78                 .start  = SAS0_PHYS_BASE,
  79                 .end    = SAS0_PHYS_BASE + 0x01ff,
  80                 .flags  = IORESOURCE_MEM,
  81         }, {
  82                 .name   = "mvsas0 irq",
  83                 .start  = IRQ_LOKI_SAS_A,
  84                 .end    = IRQ_LOKI_SAS_A,
  85                 .flags  = IORESOURCE_IRQ,
  86         }, {
  87                 .name   = "mvsas1 mem",
  88                 .start  = SAS1_PHYS_BASE,
  89                 .end    = SAS1_PHYS_BASE + 0x01ff,
  90                 .flags  = IORESOURCE_MEM,
  91         }, {
  92                 .name   = "mvsas1 irq",
  93                 .start  = IRQ_LOKI_SAS_B,
  94                 .end    = IRQ_LOKI_SAS_B,
  95                 .flags  = IORESOURCE_IRQ,
  96         },
  97 };
  98
  99 static struct platform_device loki_sas = {
 100         .name           = "mvsas",
 101         .id             = 0,
 102         .dev            = {
 103                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 104         },
 105         .num_resources  = ARRAY_SIZE(loki_sas_resources),
 106         .resource       = loki_sas_resources,
 107 };
 108
 109 void __init loki_sas_init(void)
 110 {
 111         writel(0x8300f707, DDR_REG(0x1424));
 112         platform_device_register(&loki_sas);
 113 }
 114
 115
 116 /*****************************************************************************
 117  * UART0
 118  ****************************************************************************/
 119 void __init loki_uart0_init(void)
 120 {
 121         orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
 122                          IRQ_LOKI_UART0, LOKI_TCLK);
 123 }
 124
 125 /*****************************************************************************
 126  * UART1
 127  ****************************************************************************/
 128 void __init loki_uart1_init(void)
 129 {
 130         orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
 131                          IRQ_LOKI_UART1, LOKI_TCLK);
 132 }
 133
 134
 135 /*****************************************************************************
 136  * Time handling
 137  ****************************************************************************/
 138 void __init loki_init_early(void)
 139 {
 140         orion_time_set_base(TIMER_VIRT_BASE);
 141 }
 142
 143 static void loki_timer_init(void)
 144 {
 145         orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 146                         IRQ_LOKI_BRIDGE, LOKI_TCLK);
 147 }
 148
 149 struct sys_timer loki_timer = {
 150         .init = loki_timer_init,
 151 };
 152
 153
 154 /*****************************************************************************
 155  * General
 156  ****************************************************************************/
 157 void __init loki_init(void)
 158 {
 159         printk(KERN_INFO "Loki ID: 88RC8480. TCLK=%d.\n", LOKI_TCLK);
 160
 161         loki_setup_cpu_mbus();
 162 }