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/dma-mapping.h>
  17 #include <linux/serial_8250.h>
  18 #include <linux/mv643xx_i2c.h>
  19 #include <linux/ata_platform.h>
  20 #include <linux/delay.h>
  21 #include <linux/clk-provider.h>
  22 #include <linux/cpu.h>
  23 #include <net/dsa.h>
  24 #include <asm/page.h>
  25 #include <asm/setup.h>
  26 #include <asm/system_misc.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/time.h>
  30 #include <linux/platform_data/mtd-orion_nand.h>
  31 #include <linux/platform_data/usb-ehci-orion.h>
  32 #include <plat/time.h>
  33 #include <plat/common.h>
  34
  35 #include "bridge-regs.h"
  36 #include "common.h"
  37 #include "orion5x.h"
  38
  39 /*****************************************************************************
  40  * I/O Address Mapping
  41  ****************************************************************************/
  42 static struct map_desc orion5x_io_desc[] __initdata = {
  43         {
  44                 .virtual        = (unsigned long) ORION5X_REGS_VIRT_BASE,
  45                 .pfn            = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
  46                 .length         = ORION5X_REGS_SIZE,
  47                 .type           = MT_DEVICE,
  48         }, {
  49                 .virtual        = (unsigned long) ORION5X_PCIE_WA_VIRT_BASE,
  50                 .pfn            = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
  51                 .length         = ORION5X_PCIE_WA_SIZE,
  52                 .type           = MT_DEVICE,
  53         },
  54 };
  55
  56 void __init orion5x_map_io(void)
  57 {
  58         iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
  59 }
  60
  61
  62 /*****************************************************************************
  63  * CLK tree
  64  ****************************************************************************/
  65 static struct clk *tclk;
  66
  67 void __init clk_init(void)
  68 {
  69         tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, orion5x_tclk);
  70
  71         orion_clkdev_init(tclk);
  72 }
  73
  74 /*****************************************************************************
  75  * EHCI0
  76  ****************************************************************************/
  77 void __init orion5x_ehci0_init(void)
  78 {
  79         orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
  80                         EHCI_PHY_ORION);
  81 }
  82
  83
  84 /*****************************************************************************
  85  * EHCI1
  86  ****************************************************************************/
  87 void __init orion5x_ehci1_init(void)
  88 {
  89         orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
  90 }
  91
  92
  93 /*****************************************************************************
  94  * GE00
  95  ****************************************************************************/
  96 void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
  97 {
  98         orion_ge00_init(eth_data,
  99                         ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
 100                         IRQ_ORION5X_ETH_ERR,
 101                         MV643XX_TX_CSUM_DEFAULT_LIMIT);
 102 }
 103
 104
 105 /*****************************************************************************
 106  * Ethernet switch
 107  ****************************************************************************/
 108 void __init orion5x_eth_switch_init(struct dsa_platform_data *d)
 109 {
 110         orion_ge00_switch_init(d);
 111 }
 112
 113
 114 /*****************************************************************************
 115  * I2C
 116  ****************************************************************************/
 117 void __init orion5x_i2c_init(void)
 118 {
 119         orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
 120
 121 }
 122
 123
 124 /*****************************************************************************
 125  * SATA
 126  ****************************************************************************/
 127 void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
 128 {
 129         orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
 130 }
 131
 132
 133 /*****************************************************************************
 134  * SPI
 135  ****************************************************************************/
 136 void __init orion5x_spi_init(void)
 137 {
 138         orion_spi_init(SPI_PHYS_BASE);
 139 }
 140
 141
 142 /*****************************************************************************
 143  * UART0
 144  ****************************************************************************/
 145 void __init orion5x_uart0_init(void)
 146 {
 147         orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
 148                          IRQ_ORION5X_UART0, tclk);
 149 }
 150
 151 /*****************************************************************************
 152  * UART1
 153  ****************************************************************************/
 154 void __init orion5x_uart1_init(void)
 155 {
 156         orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
 157                          IRQ_ORION5X_UART1, tclk);
 158 }
 159
 160 /*****************************************************************************
 161  * XOR engine
 162  ****************************************************************************/
 163 void __init orion5x_xor_init(void)
 164 {
 165         orion_xor0_init(ORION5X_XOR_PHYS_BASE,
 166                         ORION5X_XOR_PHYS_BASE + 0x200,
 167                         IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
 168 }
 169
 170 /*****************************************************************************
 171  * Cryptographic Engines and Security Accelerator (CESA)
 172  ****************************************************************************/
 173 static void __init orion5x_crypto_init(void)
 174 {
 175         mvebu_mbus_add_window_by_id(ORION_MBUS_SRAM_TARGET,
 176                                     ORION_MBUS_SRAM_ATTR,
 177                                     ORION5X_SRAM_PHYS_BASE,
 178                                     ORION5X_SRAM_SIZE);
 179         orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
 180                           SZ_8K, IRQ_ORION5X_CESA);
 181 }
 182
 183 /*****************************************************************************
 184  * Watchdog
 185  ****************************************************************************/
 186 static struct resource orion_wdt_resource[] = {
 187                 DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
 188                 DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
 189 };
 190
 191 static struct platform_device orion_wdt_device = {
 192         .name           = "orion_wdt",
 193         .id             = -1,
 194         .num_resources  = ARRAY_SIZE(orion_wdt_resource),
 195         .resource       = orion_wdt_resource,
 196 };
 197
 198 static void __init orion5x_wdt_init(void)
 199 {
 200         platform_device_register(&orion_wdt_device);
 201 }
 202
 203
 204 /*****************************************************************************
 205  * Time handling
 206  ****************************************************************************/
 207 void __init orion5x_init_early(void)
 208 {
 209         u32 rev, dev;
 210         const char *mbus_soc_name;
 211
 212         orion_time_set_base(TIMER_VIRT_BASE);
 213
 214         /* Initialize the MBUS driver */
 215         orion5x_pcie_id(&dev, &rev);
 216         if (dev == MV88F5281_DEV_ID)
 217                 mbus_soc_name = "marvell,orion5x-88f5281-mbus";
 218         else if (dev == MV88F5182_DEV_ID)
 219                 mbus_soc_name = "marvell,orion5x-88f5182-mbus";
 220         else if (dev == MV88F5181_DEV_ID)
 221                 mbus_soc_name = "marvell,orion5x-88f5181-mbus";
 222         else if (dev == MV88F6183_DEV_ID)
 223                 mbus_soc_name = "marvell,orion5x-88f6183-mbus";
 224         else
 225                 mbus_soc_name = NULL;
 226         mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE,
 227                         ORION5X_BRIDGE_WINS_SZ,
 228                         ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ);
 229 }
 230
 231 void orion5x_setup_wins(void)
 232 {
 233         /*
 234          * The PCIe windows will no longer be statically allocated
 235          * here once Orion5x is migrated to the pci-mvebu driver.
 236          */
 237         mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCIE_IO_TARGET,
 238                                           ORION_MBUS_PCIE_IO_ATTR,
 239                                           ORION5X_PCIE_IO_PHYS_BASE,
 240                                           ORION5X_PCIE_IO_SIZE,
 241                                           ORION5X_PCIE_IO_BUS_BASE);
 242         mvebu_mbus_add_window_by_id(ORION_MBUS_PCIE_MEM_TARGET,
 243                                     ORION_MBUS_PCIE_MEM_ATTR,
 244                                     ORION5X_PCIE_MEM_PHYS_BASE,
 245                                     ORION5X_PCIE_MEM_SIZE);
 246         mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCI_IO_TARGET,
 247                                           ORION_MBUS_PCI_IO_ATTR,
 248                                           ORION5X_PCI_IO_PHYS_BASE,
 249                                           ORION5X_PCI_IO_SIZE,
 250                                           ORION5X_PCI_IO_BUS_BASE);
 251         mvebu_mbus_add_window_by_id(ORION_MBUS_PCI_MEM_TARGET,
 252                                     ORION_MBUS_PCI_MEM_ATTR,
 253                                     ORION5X_PCI_MEM_PHYS_BASE,
 254                                     ORION5X_PCI_MEM_SIZE);
 255 }
 256
 257 int orion5x_tclk;
 258
 259 static int __init orion5x_find_tclk(void)
 260 {
 261         u32 dev, rev;
 262
 263         orion5x_pcie_id(&dev, &rev);
 264         if (dev == MV88F6183_DEV_ID &&
 265             (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
 266                 return 133333333;
 267
 268         return 166666667;
 269 }
 270
 271 void __init orion5x_timer_init(void)
 272 {
 273         orion5x_tclk = orion5x_find_tclk();
 274
 275         orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 276                         IRQ_ORION5X_BRIDGE, orion5x_tclk);
 277 }
 278
 279
 280 /*****************************************************************************
 281  * General
 282  ****************************************************************************/
 283 /*
 284  * Identify device ID and rev from PCIe configuration header space '0'.
 285  */
 286 void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
 287 {
 288         orion5x_pcie_id(dev, rev);
 289
 290         if (*dev == MV88F5281_DEV_ID) {
 291                 if (*rev == MV88F5281_REV_D2) {
 292                         *dev_name = "MV88F5281-D2";
 293                 } else if (*rev == MV88F5281_REV_D1) {
 294                         *dev_name = "MV88F5281-D1";
 295                 } else if (*rev == MV88F5281_REV_D0) {
 296                         *dev_name = "MV88F5281-D0";
 297                 } else {
 298                         *dev_name = "MV88F5281-Rev-Unsupported";
 299                 }
 300         } else if (*dev == MV88F5182_DEV_ID) {
 301                 if (*rev == MV88F5182_REV_A2) {
 302                         *dev_name = "MV88F5182-A2";
 303                 } else {
 304                         *dev_name = "MV88F5182-Rev-Unsupported";
 305                 }
 306         } else if (*dev == MV88F5181_DEV_ID) {
 307                 if (*rev == MV88F5181_REV_B1) {
 308                         *dev_name = "MV88F5181-Rev-B1";
 309                 } else if (*rev == MV88F5181L_REV_A1) {
 310                         *dev_name = "MV88F5181L-Rev-A1";
 311                 } else {
 312                         *dev_name = "MV88F5181(L)-Rev-Unsupported";
 313                 }
 314         } else if (*dev == MV88F6183_DEV_ID) {
 315                 if (*rev == MV88F6183_REV_B0) {
 316                         *dev_name = "MV88F6183-Rev-B0";
 317                 } else {
 318                         *dev_name = "MV88F6183-Rev-Unsupported";
 319                 }
 320         } else {
 321                 *dev_name = "Device-Unknown";
 322         }
 323 }
 324
 325 void __init orion5x_init(void)
 326 {
 327         char *dev_name;
 328         u32 dev, rev;
 329
 330         orion5x_id(&dev, &rev, &dev_name);
 331         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
 332
 333         /*
 334          * Setup Orion address map
 335          */
 336         orion5x_setup_wins();
 337
 338         /* Setup root of clk tree */
 339         clk_init();
 340
 341         /*
 342          * Don't issue "Wait for Interrupt" instruction if we are
 343          * running on D0 5281 silicon.
 344          */
 345         if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
 346                 printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
 347                 cpu_idle_poll_ctrl(true);
 348         }
 349
 350         /*
 351          * The 5082/5181l/5182/6082/6082l/6183 have crypto
 352          * while 5180n/5181/5281 don't have crypto.
 353          */
 354         if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
 355             dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
 356                 orion5x_crypto_init();
 357
 358         /*
 359          * Register watchdog driver
 360          */
 361         orion5x_wdt_init();
 362 }
 363
 364 void orion5x_restart(enum reboot_mode mode, const char *cmd)
 365 {
 366         /*
 367          * Enable and issue soft reset
 368          */
 369         orion5x_setbits(RSTOUTn_MASK, (1 << 2));
 370         orion5x_setbits(CPU_SOFT_RESET, 1);
 371         mdelay(200);
 372         orion5x_clrbits(CPU_SOFT_RESET, 1);
 373 }
 374
 375 /*
 376  * Many orion-based systems have buggy bootloader implementations.
 377  * This is a common fixup for bogus memory tags.
 378  */
 379 void __init tag_fixup_mem32(struct tag *t, char **from)
 380 {
 381         for (; t->hdr.size; t = tag_next(t))
 382                 if (t->hdr.tag == ATAG_MEM &&
 383                     (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 384                      t->u.mem.start & ~PAGE_MASK)) {
 385                         printk(KERN_WARNING
 386                                "Clearing invalid memory bank %dKB@0x%08x\n",
 387                                t->u.mem.size / 1024, t->u.mem.start);
 388                         t->hdr.tag = 0;
 389                 }
 390 }