arch/arm/mach-orion/common.c

   1 /*
   2  * arch/arm/mach-orion/common.c
   3  *
   4  * Core functions for Marvell Orion System On Chip
   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 <asm/page.h>
  21 #include <asm/setup.h>
  22 #include <asm/timex.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/map.h>
  25 #include <asm/arch/hardware.h>
  26 #include <asm/arch/platform.h>
  27 #include "common.h"
  28
  29 /*****************************************************************************
  30  * I/O Address Mapping
  31  ****************************************************************************/
  32 static struct map_desc orion_io_desc[] __initdata = {
  33         {
  34                 .virtual        = ORION_REGS_VIRT_BASE,
  35                 .pfn            = __phys_to_pfn(ORION_REGS_PHYS_BASE),
  36                 .length         = ORION_REGS_SIZE,
  37                 .type           = MT_DEVICE
  38         },
  39         {
  40                 .virtual        = ORION_PCIE_IO_VIRT_BASE,
  41                 .pfn            = __phys_to_pfn(ORION_PCIE_IO_PHYS_BASE),
  42                 .length         = ORION_PCIE_IO_SIZE,
  43                 .type           = MT_DEVICE
  44         },
  45         {
  46                 .virtual        = ORION_PCI_IO_VIRT_BASE,
  47                 .pfn            = __phys_to_pfn(ORION_PCI_IO_PHYS_BASE),
  48                 .length         = ORION_PCI_IO_SIZE,
  49                 .type           = MT_DEVICE
  50         },
  51         {
  52                 .virtual        = ORION_PCIE_WA_VIRT_BASE,
  53                 .pfn            = __phys_to_pfn(ORION_PCIE_WA_PHYS_BASE),
  54                 .length         = ORION_PCIE_WA_SIZE,
  55                 .type           = MT_DEVICE
  56         },
  57 };
  58
  59 void __init orion_map_io(void)
  60 {
  61         iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
  62 }
  63
  64 /*****************************************************************************
  65  * UART
  66  ****************************************************************************/
  67
  68 static struct resource orion_uart_resources[] = {
  69         {
  70                 .start          = UART0_PHYS_BASE,
  71                 .end            = UART0_PHYS_BASE + 0xff,
  72                 .flags          = IORESOURCE_MEM,
  73         },
  74         {
  75                 .start          = IRQ_ORION_UART0,
  76                 .end            = IRQ_ORION_UART0,
  77                 .flags          = IORESOURCE_IRQ,
  78         },
  79         {
  80                 .start          = UART1_PHYS_BASE,
  81                 .end            = UART1_PHYS_BASE + 0xff,
  82                 .flags          = IORESOURCE_MEM,
  83         },
  84         {
  85                 .start          = IRQ_ORION_UART1,
  86                 .end            = IRQ_ORION_UART1,
  87                 .flags          = IORESOURCE_IRQ,
  88         },
  89 };
  90
  91 static struct plat_serial8250_port orion_uart_data[] = {
  92         {
  93                 .mapbase        = UART0_PHYS_BASE,
  94                 .membase        = (char *)UART0_VIRT_BASE,
  95                 .irq            = IRQ_ORION_UART0,
  96                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
  97                 .iotype         = UPIO_MEM,
  98                 .regshift       = 2,
  99                 .uartclk        = ORION_TCLK,
 100         },
 101         {
 102                 .mapbase        = UART1_PHYS_BASE,
 103                 .membase        = (char *)UART1_VIRT_BASE,
 104                 .irq            = IRQ_ORION_UART1,
 105                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 106                 .iotype         = UPIO_MEM,
 107                 .regshift       = 2,
 108                 .uartclk        = ORION_TCLK,
 109         },
 110         { },
 111 };
 112
 113 static struct platform_device orion_uart = {
 114         .name                   = "serial8250",
 115         .id                     = PLAT8250_DEV_PLATFORM,
 116         .dev                    = {
 117                 .platform_data  = orion_uart_data,
 118         },
 119         .resource               = orion_uart_resources,
 120         .num_resources          = ARRAY_SIZE(orion_uart_resources),
 121 };
 122
 123 /*******************************************************************************
 124  * USB Controller - 2 interfaces
 125  ******************************************************************************/
 126
 127 static struct resource orion_ehci0_resources[] = {
 128         {
 129                 .start  = ORION_USB0_PHYS_BASE,
 130                 .end    = ORION_USB0_PHYS_BASE + SZ_4K,
 131                 .flags  = IORESOURCE_MEM,
 132         },
 133         {
 134                 .start  = IRQ_ORION_USB0_CTRL,
 135                 .end    = IRQ_ORION_USB0_CTRL,
 136                 .flags  = IORESOURCE_IRQ,
 137         },
 138 };
 139
 140 static struct resource orion_ehci1_resources[] = {
 141         {
 142                 .start  = ORION_USB1_PHYS_BASE,
 143                 .end    = ORION_USB1_PHYS_BASE + SZ_4K,
 144                 .flags  = IORESOURCE_MEM,
 145         },
 146         {
 147                 .start  = IRQ_ORION_USB1_CTRL,
 148                 .end    = IRQ_ORION_USB1_CTRL,
 149                 .flags  = IORESOURCE_IRQ,
 150         },
 151 };
 152
 153 static struct orion_ehci_data orion_ehci_data = {
 154         .dram           = &orion_mbus_dram_info,
 155 };
 156
 157 static u64 ehci_dmamask = 0xffffffffUL;
 158
 159 static struct platform_device orion_ehci0 = {
 160         .name           = "orion-ehci",
 161         .id             = 0,
 162         .dev            = {
 163                 .dma_mask               = &ehci_dmamask,
 164                 .coherent_dma_mask      = 0xffffffff,
 165                 .platform_data          = &orion_ehci_data,
 166         },
 167         .resource       = orion_ehci0_resources,
 168         .num_resources  = ARRAY_SIZE(orion_ehci0_resources),
 169 };
 170
 171 static struct platform_device orion_ehci1 = {
 172         .name           = "orion-ehci",
 173         .id             = 1,
 174         .dev            = {
 175                 .dma_mask               = &ehci_dmamask,
 176                 .coherent_dma_mask      = 0xffffffff,
 177                 .platform_data          = &orion_ehci_data,
 178         },
 179         .resource       = orion_ehci1_resources,
 180         .num_resources  = ARRAY_SIZE(orion_ehci1_resources),
 181 };
 182
 183 /*****************************************************************************
 184  * Gigabit Ethernet port
 185  * (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
 186  ****************************************************************************/
 187
 188 static struct resource orion_eth_shared_resources[] = {
 189         {
 190                 .start  = ORION_ETH_PHYS_BASE + 0x2000,
 191                 .end    = ORION_ETH_PHYS_BASE + 0x3fff,
 192                 .flags  = IORESOURCE_MEM,
 193         },
 194 };
 195
 196 static struct platform_device orion_eth_shared = {
 197         .name           = MV643XX_ETH_SHARED_NAME,
 198         .id             = 0,
 199         .num_resources  = 1,
 200         .resource       = orion_eth_shared_resources,
 201 };
 202
 203 static struct resource orion_eth_resources[] = {
 204         {
 205                 .name   = "eth irq",
 206                 .start  = IRQ_ORION_ETH_SUM,
 207                 .end    = IRQ_ORION_ETH_SUM,
 208                 .flags  = IORESOURCE_IRQ,
 209         }
 210 };
 211
 212 static struct platform_device orion_eth = {
 213         .name           = MV643XX_ETH_NAME,
 214         .id             = 0,
 215         .num_resources  = 1,
 216         .resource       = orion_eth_resources,
 217 };
 218
 219 void __init orion_eth_init(struct mv643xx_eth_platform_data *eth_data)
 220 {
 221         orion_eth.dev.platform_data = eth_data;
 222         platform_device_register(&orion_eth_shared);
 223         platform_device_register(&orion_eth);
 224 }
 225
 226 /*****************************************************************************
 227  * I2C controller
 228  * (The Orion and Discovery (MV643xx) families share the same I2C controller)
 229  ****************************************************************************/
 230
 231 static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
 232         .freq_m         = 8, /* assumes 166 MHz TCLK */
 233         .freq_n         = 3,
 234         .timeout        = 1000, /* Default timeout of 1 second */
 235 };
 236
 237 static struct resource orion_i2c_resources[] = {
 238         {
 239                 .name   = "i2c base",
 240                 .start  = I2C_PHYS_BASE,
 241                 .end    = I2C_PHYS_BASE + 0x20 -1,
 242                 .flags  = IORESOURCE_MEM,
 243         },
 244         {
 245                 .name   = "i2c irq",
 246                 .start  = IRQ_ORION_I2C,
 247                 .end    = IRQ_ORION_I2C,
 248                 .flags  = IORESOURCE_IRQ,
 249         },
 250 };
 251
 252 static struct platform_device orion_i2c = {
 253         .name           = MV64XXX_I2C_CTLR_NAME,
 254         .id             = 0,
 255         .num_resources  = ARRAY_SIZE(orion_i2c_resources),
 256         .resource       = orion_i2c_resources,
 257         .dev            = {
 258                 .platform_data = &orion_i2c_pdata,
 259         },
 260 };
 261
 262 /*****************************************************************************
 263  * Sata port
 264  ****************************************************************************/
 265 static struct resource orion_sata_resources[] = {
 266         {
 267                 .name   = "sata base",
 268                 .start  = ORION_SATA_PHYS_BASE,
 269                 .end    = ORION_SATA_PHYS_BASE + 0x5000 - 1,
 270                 .flags  = IORESOURCE_MEM,
 271         },
 272         {
 273                 .name   = "sata irq",
 274                 .start  = IRQ_ORION_SATA,
 275                 .end    = IRQ_ORION_SATA,
 276                 .flags  = IORESOURCE_IRQ,
 277         },
 278 };
 279
 280 static struct platform_device orion_sata = {
 281         .name           = "sata_mv",
 282         .id             = 0,
 283         .dev            = {
 284                 .coherent_dma_mask      = 0xffffffff,
 285         },
 286         .num_resources  = ARRAY_SIZE(orion_sata_resources),
 287         .resource       = orion_sata_resources,
 288 };
 289
 290 void __init orion_sata_init(struct mv_sata_platform_data *sata_data)
 291 {
 292         orion_sata.dev.platform_data = sata_data;
 293         platform_device_register(&orion_sata);
 294 }
 295
 296 /*****************************************************************************
 297  * General
 298  ****************************************************************************/
 299
 300 /*
 301  * Identify device ID and rev from PCIE configuration header space '0'.
 302  */
 303 static void orion_id(u32 *dev, u32 *rev, char **dev_name)
 304 {
 305         orion_pcie_id(dev, rev);
 306
 307         if (*dev == MV88F5281_DEV_ID) {
 308                 if (*rev == MV88F5281_REV_D2) {
 309                         *dev_name = "MV88F5281-D2";
 310                 } else if (*rev == MV88F5281_REV_D1) {
 311                         *dev_name = "MV88F5281-D1";
 312                 } else {
 313                         *dev_name = "MV88F5281-Rev-Unsupported";
 314                 }
 315         } else if (*dev == MV88F5182_DEV_ID) {
 316                 if (*rev == MV88F5182_REV_A2) {
 317                         *dev_name = "MV88F5182-A2";
 318                 } else {
 319                         *dev_name = "MV88F5182-Rev-Unsupported";
 320                 }
 321         } else if (*dev == MV88F5181_DEV_ID) {
 322                 if (*rev == MV88F5181_REV_B1) {
 323                         *dev_name = "MV88F5181-Rev-B1";
 324                 } else {
 325                         *dev_name = "MV88F5181-Rev-Unsupported";
 326                 }
 327         } else {
 328                 *dev_name = "Device-Unknown";
 329         }
 330 }
 331
 332 void __init orion_init(void)
 333 {
 334         char *dev_name;
 335         u32 dev, rev;
 336
 337         orion_id(&dev, &rev, &dev_name);
 338         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
 339
 340         /*
 341          * Setup Orion address map
 342          */
 343         orion_setup_cpu_wins();
 344         orion_setup_eth_wins();
 345         if (dev == MV88F5182_DEV_ID)
 346                 orion_setup_sata_wins();
 347
 348         /*
 349          * REgister devices
 350          */
 351         platform_device_register(&orion_uart);
 352         platform_device_register(&orion_ehci0);
 353         if (dev == MV88F5182_DEV_ID)
 354                 platform_device_register(&orion_ehci1);
 355         platform_device_register(&orion_i2c);
 356 }
 357
 358 /*
 359  * Many orion-based systems have buggy bootloader implementations.
 360  * This is a common fixup for bogus memory tags.
 361  */
 362 void __init tag_fixup_mem32(struct machine_desc *mdesc, struct tag *t,
 363                             char **from, struct meminfo *meminfo)
 364 {
 365         for (; t->hdr.size; t = tag_next(t))
 366                 if (t->hdr.tag == ATAG_MEM &&
 367                     (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 368                      t->u.mem.start & ~PAGE_MASK)) {
 369                         printk(KERN_WARNING
 370                                "Clearing invalid memory bank %dKB@0x%08x\n",
 371                                t->u.mem.size / 1024, t->u.mem.start);
 372                         t->hdr.tag = 0;
 373                 }
 374 }