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/mv643xx_eth.h>
  18 #include <linux/mv643xx_i2c.h>
  19 #include <asm/page.h>
  20 #include <asm/setup.h>
  21 #include <asm/timex.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/map.h>
  24 #include <asm/arch/hardware.h>
  25 #include "common.h"
  26
  27 /*****************************************************************************
  28  * I/O Address Mapping
  29  ****************************************************************************/
  30 static struct map_desc orion_io_desc[] __initdata = {
  31         {
  32                 .virtual        = ORION_REGS_VIRT_BASE,
  33                 .pfn            = __phys_to_pfn(ORION_REGS_PHYS_BASE),
  34                 .length         = ORION_REGS_SIZE,
  35                 .type           = MT_DEVICE
  36         },
  37         {
  38                 .virtual        = ORION_PCIE_IO_VIRT_BASE,
  39                 .pfn            = __phys_to_pfn(ORION_PCIE_IO_PHYS_BASE),
  40                 .length         = ORION_PCIE_IO_SIZE,
  41                 .type           = MT_DEVICE
  42         },
  43         {
  44                 .virtual        = ORION_PCI_IO_VIRT_BASE,
  45                 .pfn            = __phys_to_pfn(ORION_PCI_IO_PHYS_BASE),
  46                 .length         = ORION_PCI_IO_SIZE,
  47                 .type           = MT_DEVICE
  48         },
  49         {
  50                 .virtual        = ORION_PCIE_WA_VIRT_BASE,
  51                 .pfn            = __phys_to_pfn(ORION_PCIE_WA_PHYS_BASE),
  52                 .length         = ORION_PCIE_WA_SIZE,
  53                 .type           = MT_DEVICE
  54         },
  55 };
  56
  57 void __init orion_map_io(void)
  58 {
  59         iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
  60 }
  61
  62 /*****************************************************************************
  63  * UART
  64  ****************************************************************************/
  65
  66 static struct resource orion_uart_resources[] = {
  67         {
  68                 .start          = UART0_PHYS_BASE,
  69                 .end            = UART0_PHYS_BASE + 0xff,
  70                 .flags          = IORESOURCE_MEM,
  71         },
  72         {
  73                 .start          = IRQ_ORION_UART0,
  74                 .end            = IRQ_ORION_UART0,
  75                 .flags          = IORESOURCE_IRQ,
  76         },
  77         {
  78                 .start          = UART1_PHYS_BASE,
  79                 .end            = UART1_PHYS_BASE + 0xff,
  80                 .flags          = IORESOURCE_MEM,
  81         },
  82         {
  83                 .start          = IRQ_ORION_UART1,
  84                 .end            = IRQ_ORION_UART1,
  85                 .flags          = IORESOURCE_IRQ,
  86         },
  87 };
  88
  89 static struct plat_serial8250_port orion_uart_data[] = {
  90         {
  91                 .mapbase        = UART0_PHYS_BASE,
  92                 .membase        = (char *)UART0_VIRT_BASE,
  93                 .irq            = IRQ_ORION_UART0,
  94                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
  95                 .iotype         = UPIO_MEM,
  96                 .regshift       = 2,
  97                 .uartclk        = ORION_TCLK,
  98         },
  99         {
 100                 .mapbase        = UART1_PHYS_BASE,
 101                 .membase        = (char *)UART1_VIRT_BASE,
 102                 .irq            = IRQ_ORION_UART1,
 103                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 104                 .iotype         = UPIO_MEM,
 105                 .regshift       = 2,
 106                 .uartclk        = ORION_TCLK,
 107         },
 108         { },
 109 };
 110
 111 static struct platform_device orion_uart = {
 112         .name                   = "serial8250",
 113         .id                     = PLAT8250_DEV_PLATFORM,
 114         .dev                    = {
 115                 .platform_data  = orion_uart_data,
 116         },
 117         .resource               = orion_uart_resources,
 118         .num_resources          = ARRAY_SIZE(orion_uart_resources),
 119 };
 120
 121 /*******************************************************************************
 122  * USB Controller - 2 interfaces
 123  ******************************************************************************/
 124
 125 static struct resource orion_ehci0_resources[] = {
 126         {
 127                 .start  = ORION_USB0_PHYS_BASE,
 128                 .end    = ORION_USB0_PHYS_BASE + SZ_4K,
 129                 .flags  = IORESOURCE_MEM,
 130         },
 131         {
 132                 .start  = IRQ_ORION_USB0_CTRL,
 133                 .end    = IRQ_ORION_USB0_CTRL,
 134                 .flags  = IORESOURCE_IRQ,
 135         },
 136 };
 137
 138 static struct resource orion_ehci1_resources[] = {
 139         {
 140                 .start  = ORION_USB1_PHYS_BASE,
 141                 .end    = ORION_USB1_PHYS_BASE + SZ_4K,
 142                 .flags  = IORESOURCE_MEM,
 143         },
 144         {
 145                 .start  = IRQ_ORION_USB1_CTRL,
 146                 .end    = IRQ_ORION_USB1_CTRL,
 147                 .flags  = IORESOURCE_IRQ,
 148         },
 149 };
 150
 151 static u64 ehci_dmamask = 0xffffffffUL;
 152
 153 static struct platform_device orion_ehci0 = {
 154         .name           = "orion-ehci",
 155         .id             = 0,
 156         .dev            = {
 157                 .dma_mask               = &ehci_dmamask,
 158                 .coherent_dma_mask      = 0xffffffff,
 159         },
 160         .resource       = orion_ehci0_resources,
 161         .num_resources  = ARRAY_SIZE(orion_ehci0_resources),
 162 };
 163
 164 static struct platform_device orion_ehci1 = {
 165         .name           = "orion-ehci",
 166         .id             = 1,
 167         .dev            = {
 168                 .dma_mask               = &ehci_dmamask,
 169                 .coherent_dma_mask      = 0xffffffff,
 170         },
 171         .resource       = orion_ehci1_resources,
 172         .num_resources  = ARRAY_SIZE(orion_ehci1_resources),
 173 };
 174
 175 /*****************************************************************************
 176  * Gigabit Ethernet port
 177  * (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
 178  ****************************************************************************/
 179
 180 static struct resource orion_eth_shared_resources[] = {
 181         {
 182                 .start  = ORION_ETH_PHYS_BASE + 0x2000,
 183                 .end    = ORION_ETH_PHYS_BASE + 0x3fff,
 184                 .flags  = IORESOURCE_MEM,
 185         },
 186 };
 187
 188 static struct platform_device orion_eth_shared = {
 189         .name           = MV643XX_ETH_SHARED_NAME,
 190         .id             = 0,
 191         .num_resources  = 1,
 192         .resource       = orion_eth_shared_resources,
 193 };
 194
 195 static struct resource orion_eth_resources[] = {
 196         {
 197                 .name   = "eth irq",
 198                 .start  = IRQ_ORION_ETH_SUM,
 199                 .end    = IRQ_ORION_ETH_SUM,
 200                 .flags  = IORESOURCE_IRQ,
 201         }
 202 };
 203
 204 static struct platform_device orion_eth = {
 205         .name           = MV643XX_ETH_NAME,
 206         .id             = 0,
 207         .num_resources  = 1,
 208         .resource       = orion_eth_resources,
 209 };
 210
 211 void __init orion_eth_init(struct mv643xx_eth_platform_data *eth_data)
 212 {
 213         orion_eth.dev.platform_data = eth_data;
 214         platform_device_register(&orion_eth_shared);
 215         platform_device_register(&orion_eth);
 216 }
 217
 218 /*****************************************************************************
 219  * I2C controller
 220  * (The Orion and Discovery (MV643xx) families share the same I2C controller)
 221  ****************************************************************************/
 222
 223 static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
 224         .freq_m         = 8, /* assumes 166 MHz TCLK */
 225         .freq_n         = 3,
 226         .timeout        = 1000, /* Default timeout of 1 second */
 227 };
 228
 229 static struct resource orion_i2c_resources[] = {
 230         {
 231                 .name   = "i2c base",
 232                 .start  = I2C_PHYS_BASE,
 233                 .end    = I2C_PHYS_BASE + 0x20 -1,
 234                 .flags  = IORESOURCE_MEM,
 235         },
 236         {
 237                 .name   = "i2c irq",
 238                 .start  = IRQ_ORION_I2C,
 239                 .end    = IRQ_ORION_I2C,
 240                 .flags  = IORESOURCE_IRQ,
 241         },
 242 };
 243
 244 static struct platform_device orion_i2c = {
 245         .name           = MV64XXX_I2C_CTLR_NAME,
 246         .id             = 0,
 247         .num_resources  = ARRAY_SIZE(orion_i2c_resources),
 248         .resource       = orion_i2c_resources,
 249         .dev            = {
 250                 .platform_data = &orion_i2c_pdata,
 251         },
 252 };
 253
 254 /*****************************************************************************
 255  * Sata port
 256  ****************************************************************************/
 257 static struct resource orion_sata_resources[] = {
 258         {
 259                 .name   = "sata base",
 260                 .start  = ORION_SATA_PHYS_BASE,
 261                 .end    = ORION_SATA_PHYS_BASE + 0x5000 - 1,
 262                 .flags  = IORESOURCE_MEM,
 263         },
 264         {
 265                 .name   = "sata irq",
 266                 .start  = IRQ_ORION_SATA,
 267                 .end    = IRQ_ORION_SATA,
 268                 .flags  = IORESOURCE_IRQ,
 269         },
 270 };
 271
 272 static struct platform_device orion_sata = {
 273         .name           = "sata_mv",
 274         .id             = 0,
 275         .dev            = {
 276                 .coherent_dma_mask      = 0xffffffff,
 277         },
 278         .num_resources  = ARRAY_SIZE(orion_sata_resources),
 279         .resource       = orion_sata_resources,
 280 };
 281
 282 void __init orion_sata_init(struct mv_sata_platform_data *sata_data)
 283 {
 284         orion_sata.dev.platform_data = sata_data;
 285         platform_device_register(&orion_sata);
 286 }
 287
 288 /*****************************************************************************
 289  * General
 290  ****************************************************************************/
 291
 292 /*
 293  * Identify device ID and rev from PCIE configuration header space '0'.
 294  */
 295 static void orion_id(u32 *dev, u32 *rev, char **dev_name)
 296 {
 297         orion_pcie_id(dev, rev);
 298
 299         if (*dev == MV88F5281_DEV_ID) {
 300                 if (*rev == MV88F5281_REV_D2) {
 301                         *dev_name = "MV88F5281-D2";
 302                 } else if (*rev == MV88F5281_REV_D1) {
 303                         *dev_name = "MV88F5281-D1";
 304                 } else {
 305                         *dev_name = "MV88F5281-Rev-Unsupported";
 306                 }
 307         } else if (*dev == MV88F5182_DEV_ID) {
 308                 if (*rev == MV88F5182_REV_A2) {
 309                         *dev_name = "MV88F5182-A2";
 310                 } else {
 311                         *dev_name = "MV88F5182-Rev-Unsupported";
 312                 }
 313         } else if (*dev == MV88F5181_DEV_ID) {
 314                 if (*rev == MV88F5181_REV_B1) {
 315                         *dev_name = "MV88F5181-Rev-B1";
 316                 } else {
 317                         *dev_name = "MV88F5181-Rev-Unsupported";
 318                 }
 319         } else {
 320                 *dev_name = "Device-Unknown";
 321         }
 322 }
 323
 324 void __init orion_init(void)
 325 {
 326         char *dev_name;
 327         u32 dev, rev;
 328
 329         orion_id(&dev, &rev, &dev_name);
 330         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
 331
 332         /*
 333          * Setup Orion address map
 334          */
 335         orion_setup_cpu_wins();
 336         orion_setup_usb_wins();
 337         orion_setup_eth_wins();
 338         orion_setup_pci_wins();
 339         orion_setup_pcie_wins();
 340         if (dev == MV88F5182_DEV_ID)
 341                 orion_setup_sata_wins();
 342
 343         /*
 344          * REgister devices
 345          */
 346         platform_device_register(&orion_uart);
 347         platform_device_register(&orion_ehci0);
 348         if (dev == MV88F5182_DEV_ID)
 349                 platform_device_register(&orion_ehci1);
 350         platform_device_register(&orion_i2c);
 351 }
 352
 353 /*
 354  * Many orion-based systems have buggy bootloader implementations.
 355  * This is a common fixup for bogus memory tags.
 356  */
 357 void __init tag_fixup_mem32(struct machine_desc *mdesc, struct tag *t,
 358                             char **from, struct meminfo *meminfo)
 359 {
 360         for (; t->hdr.size; t = tag_next(t))
 361                 if (t->hdr.tag == ATAG_MEM &&
 362                     (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 363                      t->u.mem.start & ~PAGE_MASK)) {
 364                         printk(KERN_WARNING
 365                                "Clearing invalid memory bank %dKB@0x%08x\n",
 366                                t->u.mem.size / 1024, t->u.mem.start);
 367                         t->hdr.tag = 0;
 368                 }
 369 }