arch/arm/mach-dove/common.c

   1 /*
   2  * arch/arm/mach-dove/common.c
   3  *
   4  * Core functions for Marvell Dove 88AP510 System On Chip
   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/delay.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/pci.h>
  16 #include <linux/clk.h>
  17 #include <linux/ata_platform.h>
  18 #include <linux/gpio.h>
  19 #include <asm/page.h>
  20 #include <asm/setup.h>
  21 #include <asm/timex.h>
  22 #include <asm/hardware/cache-tauros2.h>
  23 #include <asm/mach/map.h>
  24 #include <asm/mach/time.h>
  25 #include <asm/mach/pci.h>
  26 #include <mach/dove.h>
  27 #include <mach/bridge-regs.h>
  28 #include <asm/mach/arch.h>
  29 #include <linux/irq.h>
  30 #include <plat/time.h>
  31 #include <plat/ehci-orion.h>
  32 #include <plat/common.h>
  33 #include <plat/addr-map.h>
  34 #include "common.h"
  35
  36 static int get_tclk(void);
  37
  38 /*****************************************************************************
  39  * I/O Address Mapping
  40  ****************************************************************************/
  41 static struct map_desc dove_io_desc[] __initdata = {
  42         {
  43                 .virtual        = DOVE_SB_REGS_VIRT_BASE,
  44                 .pfn            = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
  45                 .length         = DOVE_SB_REGS_SIZE,
  46                 .type           = MT_DEVICE,
  47         }, {
  48                 .virtual        = DOVE_NB_REGS_VIRT_BASE,
  49                 .pfn            = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE),
  50                 .length         = DOVE_NB_REGS_SIZE,
  51                 .type           = MT_DEVICE,
  52         }, {
  53                 .virtual        = DOVE_PCIE0_IO_VIRT_BASE,
  54                 .pfn            = __phys_to_pfn(DOVE_PCIE0_IO_PHYS_BASE),
  55                 .length         = DOVE_PCIE0_IO_SIZE,
  56                 .type           = MT_DEVICE,
  57         }, {
  58                 .virtual        = DOVE_PCIE1_IO_VIRT_BASE,
  59                 .pfn            = __phys_to_pfn(DOVE_PCIE1_IO_PHYS_BASE),
  60                 .length         = DOVE_PCIE1_IO_SIZE,
  61                 .type           = MT_DEVICE,
  62         },
  63 };
  64
  65 void __init dove_map_io(void)
  66 {
  67         iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc));
  68 }
  69
  70 /*****************************************************************************
  71  * EHCI0
  72  ****************************************************************************/
  73 void __init dove_ehci0_init(void)
  74 {
  75         orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA);
  76 }
  77
  78 /*****************************************************************************
  79  * EHCI1
  80  ****************************************************************************/
  81 void __init dove_ehci1_init(void)
  82 {
  83         orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1);
  84 }
  85
  86 /*****************************************************************************
  87  * GE00
  88  ****************************************************************************/
  89 void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
  90 {
  91         orion_ge00_init(eth_data,
  92                         DOVE_GE00_PHYS_BASE, IRQ_DOVE_GE00_SUM,
  93                         0, get_tclk());
  94 }
  95
  96 /*****************************************************************************
  97  * SoC RTC
  98  ****************************************************************************/
  99 void __init dove_rtc_init(void)
 100 {
 101         orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC);
 102 }
 103
 104 /*****************************************************************************
 105  * SATA
 106  ****************************************************************************/
 107 void __init dove_sata_init(struct mv_sata_platform_data *sata_data)
 108 {
 109         orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA);
 110
 111 }
 112
 113 /*****************************************************************************
 114  * UART0
 115  ****************************************************************************/
 116 void __init dove_uart0_init(void)
 117 {
 118         orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE,
 119                          IRQ_DOVE_UART_0, get_tclk());
 120 }
 121
 122 /*****************************************************************************
 123  * UART1
 124  ****************************************************************************/
 125 void __init dove_uart1_init(void)
 126 {
 127         orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE,
 128                          IRQ_DOVE_UART_1, get_tclk());
 129 }
 130
 131 /*****************************************************************************
 132  * UART2
 133  ****************************************************************************/
 134 void __init dove_uart2_init(void)
 135 {
 136         orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE,
 137                          IRQ_DOVE_UART_2, get_tclk());
 138 }
 139
 140 /*****************************************************************************
 141  * UART3
 142  ****************************************************************************/
 143 void __init dove_uart3_init(void)
 144 {
 145         orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE,
 146                          IRQ_DOVE_UART_3, get_tclk());
 147 }
 148
 149 /*****************************************************************************
 150  * SPI
 151  ****************************************************************************/
 152 void __init dove_spi0_init(void)
 153 {
 154         orion_spi_init(DOVE_SPI0_PHYS_BASE, get_tclk());
 155 }
 156
 157 void __init dove_spi1_init(void)
 158 {
 159         orion_spi_1_init(DOVE_SPI1_PHYS_BASE, get_tclk());
 160 }
 161
 162 /*****************************************************************************
 163  * I2C
 164  ****************************************************************************/
 165 void __init dove_i2c_init(void)
 166 {
 167         orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10);
 168 }
 169
 170 /*****************************************************************************
 171  * Time handling
 172  ****************************************************************************/
 173 void __init dove_init_early(void)
 174 {
 175         orion_time_set_base(TIMER_VIRT_BASE);
 176 }
 177
 178 static int get_tclk(void)
 179 {
 180         /* use DOVE_RESET_SAMPLE_HI/LO to detect tclk */
 181         return 166666667;
 182 }
 183
 184 static void dove_timer_init(void)
 185 {
 186         orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 187                         IRQ_DOVE_BRIDGE, get_tclk());
 188 }
 189
 190 struct sys_timer dove_timer = {
 191         .init = dove_timer_init,
 192 };
 193
 194 /*****************************************************************************
 195  * XOR 0
 196  ****************************************************************************/
 197 void __init dove_xor0_init(void)
 198 {
 199         orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE,
 200                         IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01);
 201 }
 202
 203 /*****************************************************************************
 204  * XOR 1
 205  ****************************************************************************/
 206 void __init dove_xor1_init(void)
 207 {
 208         orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE,
 209                         IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11);
 210 }
 211
 212 /*****************************************************************************
 213  * SDIO
 214  ****************************************************************************/
 215 static u64 sdio_dmamask = DMA_BIT_MASK(32);
 216
 217 static struct resource dove_sdio0_resources[] = {
 218         {
 219                 .start  = DOVE_SDIO0_PHYS_BASE,
 220                 .end    = DOVE_SDIO0_PHYS_BASE + 0xff,
 221                 .flags  = IORESOURCE_MEM,
 222         }, {
 223                 .start  = IRQ_DOVE_SDIO0,
 224                 .end    = IRQ_DOVE_SDIO0,
 225                 .flags  = IORESOURCE_IRQ,
 226         },
 227 };
 228
 229 static struct platform_device dove_sdio0 = {
 230         .name           = "sdhci-dove",
 231         .id             = 0,
 232         .dev            = {
 233                 .dma_mask               = &sdio_dmamask,
 234                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 235         },
 236         .resource       = dove_sdio0_resources,
 237         .num_resources  = ARRAY_SIZE(dove_sdio0_resources),
 238 };
 239
 240 void __init dove_sdio0_init(void)
 241 {
 242         platform_device_register(&dove_sdio0);
 243 }
 244
 245 static struct resource dove_sdio1_resources[] = {
 246         {
 247                 .start  = DOVE_SDIO1_PHYS_BASE,
 248                 .end    = DOVE_SDIO1_PHYS_BASE + 0xff,
 249                 .flags  = IORESOURCE_MEM,
 250         }, {
 251                 .start  = IRQ_DOVE_SDIO1,
 252                 .end    = IRQ_DOVE_SDIO1,
 253                 .flags  = IORESOURCE_IRQ,
 254         },
 255 };
 256
 257 static struct platform_device dove_sdio1 = {
 258         .name           = "sdhci-dove",
 259         .id             = 1,
 260         .dev            = {
 261                 .dma_mask               = &sdio_dmamask,
 262                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 263         },
 264         .resource       = dove_sdio1_resources,
 265         .num_resources  = ARRAY_SIZE(dove_sdio1_resources),
 266 };
 267
 268 void __init dove_sdio1_init(void)
 269 {
 270         platform_device_register(&dove_sdio1);
 271 }
 272
 273 void __init dove_init(void)
 274 {
 275         int tclk;
 276
 277         tclk = get_tclk();
 278
 279         printk(KERN_INFO "Dove 88AP510 SoC, ");
 280         printk(KERN_INFO "TCLK = %dMHz\n", (tclk + 499999) / 1000000);
 281
 282 #ifdef CONFIG_CACHE_TAUROS2
 283         tauros2_init();
 284 #endif
 285         dove_setup_cpu_mbus();
 286
 287         /* internal devices that every board has */
 288         dove_rtc_init();
 289         dove_xor0_init();
 290         dove_xor1_init();
 291 }
 292
 293 void dove_restart(char mode, const char *cmd)
 294 {
 295         /*
 296          * Enable soft reset to assert RSTOUTn.
 297          */
 298         writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
 299
 300         /*
 301          * Assert soft reset.
 302          */
 303         writel(SOFT_RESET, SYSTEM_SOFT_RESET);
 304
 305         while (1)
 306                 ;
 307 }