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