arch/arm/mach-orion5x/common.c

   1 /*
   2  * arch/arm/mach-orion5x/common.c
   3  *
   4  * Core functions for Marvell Orion 5x SoCs
   5  *
   6  * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
   7  *
   8  * This file is licensed under the terms of the GNU General Public
   9  * License version 2.  This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/mbus.h>
  18 #include <linux/mv643xx_eth.h>
  19 #include <linux/mv643xx_i2c.h>
  20 #include <linux/ata_platform.h>
  21 #include <asm/page.h>
  22 #include <asm/setup.h>
  23 #include <asm/timex.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26 #include <asm/mach/time.h>
  27 #include <asm/arch/hardware.h>
  28 #include <asm/arch/orion5x.h>
  29 #include <asm/plat-orion/ehci-orion.h>
  30 #include <asm/plat-orion/orion_nand.h>
  31 #include <asm/plat-orion/time.h>
  32 #include "common.h"
  33
  34 /*****************************************************************************
  35  * I/O Address Mapping
  36  ****************************************************************************/
  37 static struct map_desc orion5x_io_desc[] __initdata = {
  38         {
  39                 .virtual        = ORION5X_REGS_VIRT_BASE,
  40                 .pfn            = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
  41                 .length         = ORION5X_REGS_SIZE,
  42                 .type           = MT_DEVICE
  43         },
  44         {
  45                 .virtual        = ORION5X_PCIE_IO_VIRT_BASE,
  46                 .pfn            = __phys_to_pfn(ORION5X_PCIE_IO_PHYS_BASE),
  47                 .length         = ORION5X_PCIE_IO_SIZE,
  48                 .type           = MT_DEVICE
  49         },
  50         {
  51                 .virtual        = ORION5X_PCI_IO_VIRT_BASE,
  52                 .pfn            = __phys_to_pfn(ORION5X_PCI_IO_PHYS_BASE),
  53                 .length         = ORION5X_PCI_IO_SIZE,
  54                 .type           = MT_DEVICE
  55         },
  56         {
  57                 .virtual        = ORION5X_PCIE_WA_VIRT_BASE,
  58                 .pfn            = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
  59                 .length         = ORION5X_PCIE_WA_SIZE,
  60                 .type           = MT_DEVICE
  61         },
  62 };
  63
  64 void __init orion5x_map_io(void)
  65 {
  66         iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
  67 }
  68
  69 /*****************************************************************************
  70  * UART
  71  ****************************************************************************/
  72
  73 static struct resource orion5x_uart_resources[] = {
  74         {
  75                 .start          = UART0_PHYS_BASE,
  76                 .end            = UART0_PHYS_BASE + 0xff,
  77                 .flags          = IORESOURCE_MEM,
  78         },
  79         {
  80                 .start          = IRQ_ORION5X_UART0,
  81                 .end            = IRQ_ORION5X_UART0,
  82                 .flags          = IORESOURCE_IRQ,
  83         },
  84         {
  85                 .start          = UART1_PHYS_BASE,
  86                 .end            = UART1_PHYS_BASE + 0xff,
  87                 .flags          = IORESOURCE_MEM,
  88         },
  89         {
  90                 .start          = IRQ_ORION5X_UART1,
  91                 .end            = IRQ_ORION5X_UART1,
  92                 .flags          = IORESOURCE_IRQ,
  93         },
  94 };
  95
  96 static struct plat_serial8250_port orion5x_uart_data[] = {
  97         {
  98                 .mapbase        = UART0_PHYS_BASE,
  99                 .membase        = (char *)UART0_VIRT_BASE,
 100                 .irq            = IRQ_ORION5X_UART0,
 101                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 102                 .iotype         = UPIO_MEM,
 103                 .regshift       = 2,
 104                 .uartclk        = ORION5X_TCLK,
 105         },
 106         {
 107                 .mapbase        = UART1_PHYS_BASE,
 108                 .membase        = (char *)UART1_VIRT_BASE,
 109                 .irq            = IRQ_ORION5X_UART1,
 110                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 111                 .iotype         = UPIO_MEM,
 112                 .regshift       = 2,
 113                 .uartclk        = ORION5X_TCLK,
 114         },
 115         { },
 116 };
 117
 118 static struct platform_device orion5x_uart = {
 119         .name                   = "serial8250",
 120         .id                     = PLAT8250_DEV_PLATFORM,
 121         .dev                    = {
 122                 .platform_data  = orion5x_uart_data,
 123         },
 124         .resource               = orion5x_uart_resources,
 125         .num_resources          = ARRAY_SIZE(orion5x_uart_resources),
 126 };
 127
 128 /*******************************************************************************
 129  * USB Controller - 2 interfaces
 130  ******************************************************************************/
 131
 132 static struct resource orion5x_ehci0_resources[] = {
 133         {
 134                 .start  = ORION5X_USB0_PHYS_BASE,
 135                 .end    = ORION5X_USB0_PHYS_BASE + SZ_4K - 1,
 136                 .flags  = IORESOURCE_MEM,
 137         },
 138         {
 139                 .start  = IRQ_ORION5X_USB0_CTRL,
 140                 .end    = IRQ_ORION5X_USB0_CTRL,
 141                 .flags  = IORESOURCE_IRQ,
 142         },
 143 };
 144
 145 static struct resource orion5x_ehci1_resources[] = {
 146         {
 147                 .start  = ORION5X_USB1_PHYS_BASE,
 148                 .end    = ORION5X_USB1_PHYS_BASE + SZ_4K - 1,
 149                 .flags  = IORESOURCE_MEM,
 150         },
 151         {
 152                 .start  = IRQ_ORION5X_USB1_CTRL,
 153                 .end    = IRQ_ORION5X_USB1_CTRL,
 154                 .flags  = IORESOURCE_IRQ,
 155         },
 156 };
 157
 158 static struct orion_ehci_data orion5x_ehci_data = {
 159         .dram           = &orion5x_mbus_dram_info,
 160 };
 161
 162 static u64 ehci_dmamask = 0xffffffffUL;
 163
 164 static struct platform_device orion5x_ehci0 = {
 165         .name           = "orion-ehci",
 166         .id             = 0,
 167         .dev            = {
 168                 .dma_mask               = &ehci_dmamask,
 169                 .coherent_dma_mask      = 0xffffffff,
 170                 .platform_data          = &orion5x_ehci_data,
 171         },
 172         .resource       = orion5x_ehci0_resources,
 173         .num_resources  = ARRAY_SIZE(orion5x_ehci0_resources),
 174 };
 175
 176 static struct platform_device orion5x_ehci1 = {
 177         .name           = "orion-ehci",
 178         .id             = 1,
 179         .dev            = {
 180                 .dma_mask               = &ehci_dmamask,
 181                 .coherent_dma_mask      = 0xffffffff,
 182                 .platform_data          = &orion5x_ehci_data,
 183         },
 184         .resource       = orion5x_ehci1_resources,
 185         .num_resources  = ARRAY_SIZE(orion5x_ehci1_resources),
 186 };
 187
 188 /*****************************************************************************
 189  * Gigabit Ethernet port
 190  * (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
 191  ****************************************************************************/
 192
 193 struct mv643xx_eth_shared_platform_data orion5x_eth_shared_data = {
 194         .dram           = &orion5x_mbus_dram_info,
 195         .t_clk          = ORION5X_TCLK,
 196 };
 197
 198 static struct resource orion5x_eth_shared_resources[] = {
 199         {
 200                 .start  = ORION5X_ETH_PHYS_BASE + 0x2000,
 201                 .end    = ORION5X_ETH_PHYS_BASE + 0x3fff,
 202                 .flags  = IORESOURCE_MEM,
 203         },
 204 };
 205
 206 static struct platform_device orion5x_eth_shared = {
 207         .name           = MV643XX_ETH_SHARED_NAME,
 208         .id             = 0,
 209         .dev            = {
 210                 .platform_data  = &orion5x_eth_shared_data,
 211         },
 212         .num_resources  = 1,
 213         .resource       = orion5x_eth_shared_resources,
 214 };
 215
 216 static struct resource orion5x_eth_resources[] = {
 217         {
 218                 .name   = "eth irq",
 219                 .start  = IRQ_ORION5X_ETH_SUM,
 220                 .end    = IRQ_ORION5X_ETH_SUM,
 221                 .flags  = IORESOURCE_IRQ,
 222         }
 223 };
 224
 225 static struct platform_device orion5x_eth = {
 226         .name           = MV643XX_ETH_NAME,
 227         .id             = 0,
 228         .num_resources  = 1,
 229         .resource       = orion5x_eth_resources,
 230 };
 231
 232 void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
 233 {
 234         eth_data->shared = &orion5x_eth_shared;
 235         orion5x_eth.dev.platform_data = eth_data;
 236
 237         platform_device_register(&orion5x_eth_shared);
 238         platform_device_register(&orion5x_eth);
 239 }
 240
 241 /*****************************************************************************
 242  * I2C controller
 243  * (The Orion and Discovery (MV643xx) families share the same I2C controller)
 244  ****************************************************************************/
 245
 246 static struct mv64xxx_i2c_pdata orion5x_i2c_pdata = {
 247         .freq_m         = 8, /* assumes 166 MHz TCLK */
 248         .freq_n         = 3,
 249         .timeout        = 1000, /* Default timeout of 1 second */
 250 };
 251
 252 static struct resource orion5x_i2c_resources[] = {
 253         {
 254                 .name   = "i2c base",
 255                 .start  = I2C_PHYS_BASE,
 256                 .end    = I2C_PHYS_BASE + 0x20 -1,
 257                 .flags  = IORESOURCE_MEM,
 258         },
 259         {
 260                 .name   = "i2c irq",
 261                 .start  = IRQ_ORION5X_I2C,
 262                 .end    = IRQ_ORION5X_I2C,
 263                 .flags  = IORESOURCE_IRQ,
 264         },
 265 };
 266
 267 static struct platform_device orion5x_i2c = {
 268         .name           = MV64XXX_I2C_CTLR_NAME,
 269         .id             = 0,
 270         .num_resources  = ARRAY_SIZE(orion5x_i2c_resources),
 271         .resource       = orion5x_i2c_resources,
 272         .dev            = {
 273                 .platform_data = &orion5x_i2c_pdata,
 274         },
 275 };
 276
 277 /*****************************************************************************
 278  * Sata port
 279  ****************************************************************************/
 280 static struct resource orion5x_sata_resources[] = {
 281         {
 282                 .name   = "sata base",
 283                 .start  = ORION5X_SATA_PHYS_BASE,
 284                 .end    = ORION5X_SATA_PHYS_BASE + 0x5000 - 1,
 285                 .flags  = IORESOURCE_MEM,
 286         },
 287         {
 288                 .name   = "sata irq",
 289                 .start  = IRQ_ORION5X_SATA,
 290                 .end    = IRQ_ORION5X_SATA,
 291                 .flags  = IORESOURCE_IRQ,
 292         },
 293 };
 294
 295 static struct platform_device orion5x_sata = {
 296         .name           = "sata_mv",
 297         .id             = 0,
 298         .dev            = {
 299                 .coherent_dma_mask      = 0xffffffff,
 300         },
 301         .num_resources  = ARRAY_SIZE(orion5x_sata_resources),
 302         .resource       = orion5x_sata_resources,
 303 };
 304
 305 void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
 306 {
 307         sata_data->dram = &orion5x_mbus_dram_info;
 308         orion5x_sata.dev.platform_data = sata_data;
 309         platform_device_register(&orion5x_sata);
 310 }
 311
 312 /*****************************************************************************
 313  * Time handling
 314  ****************************************************************************/
 315
 316 static void orion5x_timer_init(void)
 317 {
 318         orion_time_init(IRQ_ORION5X_BRIDGE, ORION5X_TCLK);
 319 }
 320
 321 struct sys_timer orion5x_timer = {
 322         .init = orion5x_timer_init,
 323 };
 324
 325 /*****************************************************************************
 326  * General
 327  ****************************************************************************/
 328
 329 /*
 330  * Identify device ID and rev from PCIe configuration header space '0'.
 331  */
 332 static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
 333 {
 334         orion5x_pcie_id(dev, rev);
 335
 336         if (*dev == MV88F5281_DEV_ID) {
 337                 if (*rev == MV88F5281_REV_D2) {
 338                         *dev_name = "MV88F5281-D2";
 339                 } else if (*rev == MV88F5281_REV_D1) {
 340                         *dev_name = "MV88F5281-D1";
 341                 } else {
 342                         *dev_name = "MV88F5281-Rev-Unsupported";
 343                 }
 344         } else if (*dev == MV88F5182_DEV_ID) {
 345                 if (*rev == MV88F5182_REV_A2) {
 346                         *dev_name = "MV88F5182-A2";
 347                 } else {
 348                         *dev_name = "MV88F5182-Rev-Unsupported";
 349                 }
 350         } else if (*dev == MV88F5181_DEV_ID) {
 351                 if (*rev == MV88F5181_REV_B1) {
 352                         *dev_name = "MV88F5181-Rev-B1";
 353                 } else {
 354                         *dev_name = "MV88F5181-Rev-Unsupported";
 355                 }
 356         } else {
 357                 *dev_name = "Device-Unknown";
 358         }
 359 }
 360
 361 void __init orion5x_init(void)
 362 {
 363         char *dev_name;
 364         u32 dev, rev;
 365
 366         orion5x_id(&dev, &rev, &dev_name);
 367         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION5X_TCLK);
 368
 369         /*
 370          * Setup Orion address map
 371          */
 372         orion5x_setup_cpu_mbus_bridge();
 373
 374         /*
 375          * Register devices.
 376          */
 377         platform_device_register(&orion5x_uart);
 378         platform_device_register(&orion5x_ehci0);
 379         if (dev == MV88F5182_DEV_ID)
 380                 platform_device_register(&orion5x_ehci1);
 381         platform_device_register(&orion5x_i2c);
 382 }
 383
 384 /*
 385  * Many orion-based systems have buggy bootloader implementations.
 386  * This is a common fixup for bogus memory tags.
 387  */
 388 void __init tag_fixup_mem32(struct machine_desc *mdesc, struct tag *t,
 389                             char **from, struct meminfo *meminfo)
 390 {
 391         for (; t->hdr.size; t = tag_next(t))
 392                 if (t->hdr.tag == ATAG_MEM &&
 393                     (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 394                      t->u.mem.start & ~PAGE_MASK)) {
 395                         printk(KERN_WARNING
 396                                "Clearing invalid memory bank %dKB@0x%08x\n",
 397                                t->u.mem.size / 1024, t->u.mem.start);
 398                         t->hdr.tag = 0;
 399                 }
 400 }