arch/arm/mach-realview/realview_pb1176.c

   1 /*
   2  *  linux/arch/arm/mach-realview/realview_pb1176.c
   3  *
   4  *  Copyright (C) 2008 ARM Limited
   5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/device.h>
  25 #include <linux/amba/bus.h>
  26 #include <linux/amba/pl061.h>
  27 #include <linux/amba/mmci.h>
  28 #include <linux/amba/pl022.h>
  29 #include <linux/mtd/physmap.h>
  30 #include <linux/mtd/partitions.h>
  31 #include <linux/io.h>
  32 #include <linux/irqchip/arm-gic.h>
  33 #include <linux/platform_data/clk-realview.h>
  34 #include <linux/reboot.h>
  35 #include <linux/memblock.h>
  36
  37 #include "hardware.h"
  38 #include <asm/irq.h>
  39 #include <asm/mach-types.h>
  40 #include <asm/pgtable.h>
  41 #include <asm/hardware/cache-l2x0.h>
  42
  43 #include <asm/mach/arch.h>
  44 #include <asm/mach/flash.h>
  45 #include <asm/mach/map.h>
  46 #include <asm/mach/time.h>
  47
  48 #include "board-pb1176.h"
  49 #include "irqs-pb1176.h"
  50
  51 #include "core.h"
  52
  53 static struct map_desc realview_pb1176_io_desc[] __initdata = {
  54         {
  55                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  56                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  57                 .length         = SZ_4K,
  58                 .type           = MT_DEVICE,
  59         }, {
  60                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_CPU_BASE),
  61                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
  62                 .length         = SZ_4K,
  63                 .type           = MT_DEVICE,
  64         }, {
  65                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
  66                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
  67                 .length         = SZ_4K,
  68                 .type           = MT_DEVICE,
  69         }, {
  70                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
  71                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
  72                 .length         = SZ_4K,
  73                 .type           = MT_DEVICE,
  74         }, {
  75                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
  76                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
  77                 .length         = SZ_4K,
  78                 .type           = MT_DEVICE,
  79         }, {
  80                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  81                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  82                 .length         = SZ_4K,
  83                 .type           = MT_DEVICE,
  84         }, {
  85                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
  86                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
  87                 .length         = SZ_4K,
  88                 .type           = MT_DEVICE,
  89         }, {
  90                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
  91                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
  92                 .length         = SZ_4K,
  93                 .type           = MT_DEVICE,
  94         }, {
  95                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
  96                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
  97                 .length         = SZ_8K,
  98                 .type           = MT_DEVICE,
  99         },
 100 #ifdef CONFIG_DEBUG_LL
 101         {
 102                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
 103                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
 104                 .length         = SZ_4K,
 105                 .type           = MT_DEVICE,
 106         },
 107 #endif
 108 };
 109
 110 static void __init realview_pb1176_map_io(void)
 111 {
 112         iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
 113 }
 114
 115 static struct pl061_platform_data gpio0_plat_data = {
 116         .gpio_base      = 0,
 117 };
 118
 119 static struct pl061_platform_data gpio1_plat_data = {
 120         .gpio_base      = 8,
 121 };
 122
 123 static struct pl061_platform_data gpio2_plat_data = {
 124         .gpio_base      = 16,
 125 };
 126
 127 static struct pl022_ssp_controller ssp0_plat_data = {
 128         .bus_id = 0,
 129         .enable_dma = 0,
 130         .num_chipselect = 1,
 131 };
 132
 133 /*
 134  * RealView PB1176 AMBA devices
 135  */
 136 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2 }
 137 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3 }
 138 #define AACI_IRQ        { IRQ_PB1176_AACI }
 139 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
 140 #define KMI0_IRQ        { IRQ_PB1176_KMI0 }
 141 #define KMI1_IRQ        { IRQ_PB1176_KMI1 }
 142 #define PB1176_SMC_IRQ  { }
 143 #define MPMC_IRQ        { }
 144 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD }
 145 #define SCTL_IRQ        { }
 146 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG }
 147 #define PB1176_GPIO0_IRQ        { IRQ_DC1176_GPIO0 }
 148 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1 }
 149 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC }
 150 #define SCI_IRQ         { IRQ_PB1176_SCI }
 151 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0 }
 152 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1 }
 153 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2 }
 154 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3 }
 155 #define PB1176_UART4_IRQ        { IRQ_PB1176_UART4 }
 156 #define PB1176_SSP_IRQ          { IRQ_DC1176_SSP }
 157
 158 /* FPGA Primecells */
 159 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 160 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 161 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 162 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 163 APB_DEVICE(uart4,       "fpga:uart4",   PB1176_UART4,   NULL);
 164
 165 /* DevChip Primecells */
 166 AHB_DEVICE(smc,         "dev:smc",      PB1176_SMC,     NULL);
 167 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 168 APB_DEVICE(wdog,        "dev:wdog",     PB1176_WATCHDOG,        NULL);
 169 APB_DEVICE(gpio0,       "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
 170 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 171 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 172 APB_DEVICE(rtc,         "dev:rtc",      PB1176_RTC,     NULL);
 173 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 174 APB_DEVICE(uart0,       "dev:uart0",    PB1176_UART0,   NULL);
 175 APB_DEVICE(uart1,       "dev:uart1",    PB1176_UART1,   NULL);
 176 APB_DEVICE(uart2,       "dev:uart2",    PB1176_UART2,   NULL);
 177 APB_DEVICE(uart3,       "dev:uart3",    PB1176_UART3,   NULL);
 178 APB_DEVICE(ssp0,        "dev:ssp0",     PB1176_SSP,     &ssp0_plat_data);
 179 AHB_DEVICE(clcd,        "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
 180
 181 static struct amba_device *amba_devs[] __initdata = {
 182         &uart0_device,
 183         &uart1_device,
 184         &uart2_device,
 185         &uart3_device,
 186         &uart4_device,
 187         &smc_device,
 188         &clcd_device,
 189         &sctl_device,
 190         &wdog_device,
 191         &gpio0_device,
 192         &gpio1_device,
 193         &gpio2_device,
 194         &rtc_device,
 195         &sci0_device,
 196         &ssp0_device,
 197         &aaci_device,
 198         &mmc0_device,
 199         &kmi0_device,
 200         &kmi1_device,
 201 };
 202
 203 /*
 204  * RealView PB1176 platform devices
 205  */
 206 static struct resource realview_pb1176_flash_resources[] = {
 207         {
 208                 .start          = REALVIEW_PB1176_FLASH_BASE,
 209                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
 210                 .flags          = IORESOURCE_MEM,
 211         },
 212 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
 213         {
 214                 .start          = REALVIEW_PB1176_SEC_FLASH_BASE,
 215                 .end            = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
 216                 .flags          = IORESOURCE_MEM,
 217         },
 218 #endif
 219 };
 220
 221 static struct physmap_flash_data pb1176_rom_pdata = {
 222         .probe_type     = "map_rom",
 223         .width          = 4,
 224         .nr_parts       = 0,
 225 };
 226
 227 static struct resource pb1176_rom_resources[] = {
 228         /*
 229          * This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
 230          * The reference manual states that this is actually a pseudo-ROM
 231          * programmed in NVRAM.
 232          */
 233         {
 234                 .start          = REALVIEW_DC1176_ROM_BASE,
 235                 .end            = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
 236                 .flags          = IORESOURCE_MEM,
 237         }
 238 };
 239
 240 static struct platform_device pb1176_rom_device = {
 241         .name           = "physmap-flash",
 242         .id             = -1,
 243         .num_resources  = ARRAY_SIZE(pb1176_rom_resources),
 244         .resource       = pb1176_rom_resources,
 245         .dev = {
 246                 .platform_data = &pb1176_rom_pdata,
 247         },
 248 };
 249
 250 static struct resource realview_pb1176_smsc911x_resources[] = {
 251         [0] = {
 252                 .start          = REALVIEW_PB1176_ETH_BASE,
 253                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
 254                 .flags          = IORESOURCE_MEM,
 255         },
 256         [1] = {
 257                 .start          = IRQ_PB1176_ETH,
 258                 .end            = IRQ_PB1176_ETH,
 259                 .flags          = IORESOURCE_IRQ,
 260         },
 261 };
 262
 263 static struct resource realview_pb1176_isp1761_resources[] = {
 264         [0] = {
 265                 .start          = REALVIEW_PB1176_USB_BASE,
 266                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
 267                 .flags          = IORESOURCE_MEM,
 268         },
 269         [1] = {
 270                 .start          = IRQ_PB1176_USB,
 271                 .end            = IRQ_PB1176_USB,
 272                 .flags          = IORESOURCE_IRQ,
 273         },
 274 };
 275
 276 static struct resource pmu_resource = {
 277         .start          = IRQ_DC1176_CORE_PMU,
 278         .end            = IRQ_DC1176_CORE_PMU,
 279         .flags          = IORESOURCE_IRQ,
 280 };
 281
 282 static struct platform_device pmu_device = {
 283         .name                   = "armv6-pmu",
 284         .id                     = -1,
 285         .num_resources          = 1,
 286         .resource               = &pmu_resource,
 287 };
 288
 289 static struct resource char_lcd_resources[] = {
 290         {
 291                 .start = REALVIEW_CHAR_LCD_BASE,
 292                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 293                 .flags = IORESOURCE_MEM,
 294         },
 295         {
 296                 .start  = IRQ_PB1176_CHARLCD,
 297                 .end    = IRQ_PB1176_CHARLCD,
 298                 .flags  = IORESOURCE_IRQ,
 299         },
 300 };
 301
 302 static struct platform_device char_lcd_device = {
 303         .name           =       "arm-charlcd",
 304         .id             =       -1,
 305         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 306         .resource       =       char_lcd_resources,
 307 };
 308
 309 static void __init gic_init_irq(void)
 310 {
 311         /* ARM1176 DevChip GIC, primary */
 312         gic_init(0, IRQ_DC1176_GIC_START,
 313                  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
 314                  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
 315
 316         /* board GIC, secondary */
 317         gic_init(1, IRQ_PB1176_GIC_START,
 318                  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
 319                  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 320         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 321 }
 322
 323 static void __init realview_pb1176_timer_init(void)
 324 {
 325         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
 326         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
 327         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 328         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 329
 330         realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
 331         realview_timer_init(IRQ_DC1176_TIMER0);
 332 }
 333
 334 static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd)
 335 {
 336         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 337         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 338         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 339         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
 340         dsb();
 341 }
 342
 343 static void realview_pb1176_fixup(struct tag *tags, char **from)
 344 {
 345         /*
 346          * RealView PB1176 only has 128MB of RAM mapped at 0.
 347          */
 348         memblock_add(0, SZ_128M);
 349 }
 350
 351 static void __init realview_pb1176_init(void)
 352 {
 353         int i;
 354
 355 #ifdef CONFIG_CACHE_L2X0
 356         /*
 357          * The PL220 needs to be manually configured as the hardware
 358          * doesn't report the correct sizes.
 359          * 128kB (16kB/way), 8-way associativity, event monitor and
 360          * parity enabled, ignore share bit, no force write allocate
 361          * Bits:  .... ...0 0111 0011 0000 .... .... ....
 362          */
 363         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
 364 #endif
 365
 366         realview_flash_register(realview_pb1176_flash_resources,
 367                                 ARRAY_SIZE(realview_pb1176_flash_resources));
 368         platform_device_register(&pb1176_rom_device);
 369         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
 370         platform_device_register(&realview_i2c_device);
 371         realview_usb_register(realview_pb1176_isp1761_resources);
 372         platform_device_register(&pmu_device);
 373         platform_device_register(&char_lcd_device);
 374         platform_device_register(&realview_leds_device);
 375
 376         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 377                 struct amba_device *d = amba_devs[i];
 378                 amba_device_register(d, &iomem_resource);
 379         }
 380 }
 381
 382 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 383         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 384         .atag_offset    = 0x100,
 385         .fixup          = realview_pb1176_fixup,
 386         .map_io         = realview_pb1176_map_io,
 387         .init_early     = realview_init_early,
 388         .init_irq       = gic_init_irq,
 389         .init_time      = realview_pb1176_timer_init,
 390         .init_machine   = realview_pb1176_init,
 391 #ifdef CONFIG_ZONE_DMA
 392         .dma_zone_size  = SZ_256M,
 393 #endif
 394         .restart        = realview_pb1176_restart,
 395 MACHINE_END