linux/arch/arm/mach-orion5x/common.c
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   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 ****************************************************************************/
  42static 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
  56void __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 ****************************************************************************/
  65static struct clk *tclk;
  66
  67void __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 ****************************************************************************/
  77void __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 ****************************************************************************/
  87void __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 ****************************************************************************/
  96void __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 ****************************************************************************/
 108void __init orion5x_eth_switch_init(struct dsa_chip_data *d)
 109{
 110        orion_ge00_switch_init(d);
 111}
 112
 113
 114/*****************************************************************************
 115 * I2C
 116 ****************************************************************************/
 117void __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 ****************************************************************************/
 127void __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 ****************************************************************************/
 136void __init orion5x_spi_init(void)
 137{
 138        orion_spi_init(SPI_PHYS_BASE);
 139}
 140
 141
 142/*****************************************************************************
 143 * UART0
 144 ****************************************************************************/
 145void __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 ****************************************************************************/
 154void __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 ****************************************************************************/
 163void __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 ****************************************************************************/
 173static 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 ****************************************************************************/
 186static struct resource orion_wdt_resource[] = {
 187                DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
 188                DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
 189};
 190
 191static 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
 198static void __init orion5x_wdt_init(void)
 199{
 200        platform_device_register(&orion_wdt_device);
 201}
 202
 203
 204/*****************************************************************************
 205 * Time handling
 206 ****************************************************************************/
 207void __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
 231void 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
 257int orion5x_tclk;
 258
 259static 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
 271void __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 */
 286void __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
 325void __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
 364void 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 */
 379void __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}
 391