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