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/io.h>
  16#include <linux/platform_device.h>
  17#include <linux/dma-mapping.h>
  18#include <linux/serial_8250.h>
  19#include <linux/mv643xx_i2c.h>
  20#include <linux/ata_platform.h>
  21#include <linux/delay.h>
  22#include <linux/clk-provider.h>
  23#include <linux/cpu.h>
  24#include <linux/platform_data/dsa.h>
  25#include <asm/page.h>
  26#include <asm/setup.h>
  27#include <asm/system_misc.h>
  28#include <asm/mach/arch.h>
  29#include <asm/mach/map.h>
  30#include <asm/mach/time.h>
  31#include <linux/platform_data/mtd-orion_nand.h>
  32#include <linux/platform_data/usb-ehci-orion.h>
  33#include <plat/time.h>
  34#include <plat/common.h>
  35
  36#include "bridge-regs.h"
  37#include "common.h"
  38#include "orion5x.h"
  39
  40/*****************************************************************************
  41 * I/O Address Mapping
  42 ****************************************************************************/
  43static struct map_desc orion5x_io_desc[] __initdata = {
  44        {
  45                .virtual        = (unsigned long) ORION5X_REGS_VIRT_BASE,
  46                .pfn            = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
  47                .length         = ORION5X_REGS_SIZE,
  48                .type           = MT_DEVICE,
  49        }, {
  50                .virtual        = (unsigned long) ORION5X_PCIE_WA_VIRT_BASE,
  51                .pfn            = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
  52                .length         = ORION5X_PCIE_WA_SIZE,
  53                .type           = MT_DEVICE,
  54        },
  55};
  56
  57void __init orion5x_map_io(void)
  58{
  59        iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
  60}
  61
  62
  63/*****************************************************************************
  64 * CLK tree
  65 ****************************************************************************/
  66static struct clk *tclk;
  67
  68void __init clk_init(void)
  69{
  70        tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, orion5x_tclk);
  71
  72        orion_clkdev_init(tclk);
  73}
  74
  75/*****************************************************************************
  76 * EHCI0
  77 ****************************************************************************/
  78void __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 ****************************************************************************/
  88void __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 ****************************************************************************/
  97void __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 ****************************************************************************/
 109void __init orion5x_eth_switch_init(struct dsa_chip_data *d)
 110{
 111        orion_ge00_switch_init(d);
 112}
 113
 114
 115/*****************************************************************************
 116 * I2C
 117 ****************************************************************************/
 118void __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 ****************************************************************************/
 128void __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 ****************************************************************************/
 137void __init orion5x_spi_init(void)
 138{
 139        orion_spi_init(SPI_PHYS_BASE);
 140}
 141
 142
 143/*****************************************************************************
 144 * UART0
 145 ****************************************************************************/
 146void __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 ****************************************************************************/
 155void __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 ****************************************************************************/
 164void __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 ****************************************************************************/
 174static 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 ****************************************************************************/
 187static struct resource orion_wdt_resource[] = {
 188                DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
 189                DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
 190};
 191
 192static struct platform_device orion_wdt_device = {
 193        .name           = "orion_wdt",
 194        .id             = -1,
 195        .num_resources  = ARRAY_SIZE(orion_wdt_resource),
 196        .resource       = orion_wdt_resource,
 197};
 198
 199static void __init orion5x_wdt_init(void)
 200{
 201        platform_device_register(&orion_wdt_device);
 202}
 203
 204
 205/*****************************************************************************
 206 * Time handling
 207 ****************************************************************************/
 208void __init orion5x_init_early(void)
 209{
 210        u32 rev, dev;
 211        const char *mbus_soc_name;
 212
 213        orion_time_set_base(TIMER_VIRT_BASE);
 214
 215        /* Initialize the MBUS driver */
 216        orion5x_pcie_id(&dev, &rev);
 217        if (dev == MV88F5281_DEV_ID)
 218                mbus_soc_name = "marvell,orion5x-88f5281-mbus";
 219        else if (dev == MV88F5182_DEV_ID)
 220                mbus_soc_name = "marvell,orion5x-88f5182-mbus";
 221        else if (dev == MV88F5181_DEV_ID)
 222                mbus_soc_name = "marvell,orion5x-88f5181-mbus";
 223        else if (dev == MV88F6183_DEV_ID)
 224                mbus_soc_name = "marvell,orion5x-88f6183-mbus";
 225        else
 226                mbus_soc_name = NULL;
 227        mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE,
 228                        ORION5X_BRIDGE_WINS_SZ,
 229                        ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ);
 230}
 231
 232void orion5x_setup_wins(void)
 233{
 234        /*
 235         * The PCIe windows will no longer be statically allocated
 236         * here once Orion5x is migrated to the pci-mvebu driver.
 237         */
 238        mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCIE_IO_TARGET,
 239                                          ORION_MBUS_PCIE_IO_ATTR,
 240                                          ORION5X_PCIE_IO_PHYS_BASE,
 241                                          ORION5X_PCIE_IO_SIZE,
 242                                          ORION5X_PCIE_IO_BUS_BASE);
 243        mvebu_mbus_add_window_by_id(ORION_MBUS_PCIE_MEM_TARGET,
 244                                    ORION_MBUS_PCIE_MEM_ATTR,
 245                                    ORION5X_PCIE_MEM_PHYS_BASE,
 246                                    ORION5X_PCIE_MEM_SIZE);
 247        mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCI_IO_TARGET,
 248                                          ORION_MBUS_PCI_IO_ATTR,
 249                                          ORION5X_PCI_IO_PHYS_BASE,
 250                                          ORION5X_PCI_IO_SIZE,
 251                                          ORION5X_PCI_IO_BUS_BASE);
 252        mvebu_mbus_add_window_by_id(ORION_MBUS_PCI_MEM_TARGET,
 253                                    ORION_MBUS_PCI_MEM_ATTR,
 254                                    ORION5X_PCI_MEM_PHYS_BASE,
 255                                    ORION5X_PCI_MEM_SIZE);
 256}
 257
 258int orion5x_tclk;
 259
 260static int __init orion5x_find_tclk(void)
 261{
 262        u32 dev, rev;
 263
 264        orion5x_pcie_id(&dev, &rev);
 265        if (dev == MV88F6183_DEV_ID &&
 266            (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
 267                return 133333333;
 268
 269        return 166666667;
 270}
 271
 272void __init orion5x_timer_init(void)
 273{
 274        orion5x_tclk = orion5x_find_tclk();
 275
 276        orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 277                        IRQ_ORION5X_BRIDGE, orion5x_tclk);
 278}
 279
 280
 281/*****************************************************************************
 282 * General
 283 ****************************************************************************/
 284/*
 285 * Identify device ID and rev from PCIe configuration header space '0'.
 286 */
 287void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
 288{
 289        orion5x_pcie_id(dev, rev);
 290
 291        if (*dev == MV88F5281_DEV_ID) {
 292                if (*rev == MV88F5281_REV_D2) {
 293                        *dev_name = "MV88F5281-D2";
 294                } else if (*rev == MV88F5281_REV_D1) {
 295                        *dev_name = "MV88F5281-D1";
 296                } else if (*rev == MV88F5281_REV_D0) {
 297                        *dev_name = "MV88F5281-D0";
 298                } else {
 299                        *dev_name = "MV88F5281-Rev-Unsupported";
 300                }
 301        } else if (*dev == MV88F5182_DEV_ID) {
 302                if (*rev == MV88F5182_REV_A2) {
 303                        *dev_name = "MV88F5182-A2";
 304                } else {
 305                        *dev_name = "MV88F5182-Rev-Unsupported";
 306                }
 307        } else if (*dev == MV88F5181_DEV_ID) {
 308                if (*rev == MV88F5181_REV_B1) {
 309                        *dev_name = "MV88F5181-Rev-B1";
 310                } else if (*rev == MV88F5181L_REV_A1) {
 311                        *dev_name = "MV88F5181L-Rev-A1";
 312                } else {
 313                        *dev_name = "MV88F5181(L)-Rev-Unsupported";
 314                }
 315        } else if (*dev == MV88F6183_DEV_ID) {
 316                if (*rev == MV88F6183_REV_B0) {
 317                        *dev_name = "MV88F6183-Rev-B0";
 318                } else {
 319                        *dev_name = "MV88F6183-Rev-Unsupported";
 320                }
 321        } else {
 322                *dev_name = "Device-Unknown";
 323        }
 324}
 325
 326void __init orion5x_init(void)
 327{
 328        char *dev_name;
 329        u32 dev, rev;
 330
 331        orion5x_id(&dev, &rev, &dev_name);
 332        printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
 333
 334        /*
 335         * Setup Orion address map
 336         */
 337        orion5x_setup_wins();
 338
 339        /* Setup root of clk tree */
 340        clk_init();
 341
 342        /*
 343         * Don't issue "Wait for Interrupt" instruction if we are
 344         * running on D0 5281 silicon.
 345         */
 346        if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
 347                printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
 348                cpu_idle_poll_ctrl(true);
 349        }
 350
 351        /*
 352         * The 5082/5181l/5182/6082/6082l/6183 have crypto
 353         * while 5180n/5181/5281 don't have crypto.
 354         */
 355        if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
 356            dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
 357                orion5x_crypto_init();
 358
 359        /*
 360         * Register watchdog driver
 361         */
 362        orion5x_wdt_init();
 363}
 364
 365void orion5x_restart(enum reboot_mode mode, const char *cmd)
 366{
 367        /*
 368         * Enable and issue soft reset
 369         */
 370        orion5x_setbits(RSTOUTn_MASK, (1 << 2));
 371        orion5x_setbits(CPU_SOFT_RESET, 1);
 372        mdelay(200);
 373        orion5x_clrbits(CPU_SOFT_RESET, 1);
 374}
 375
 376/*
 377 * Many orion-based systems have buggy bootloader implementations.
 378 * This is a common fixup for bogus memory tags.
 379 */
 380void __init tag_fixup_mem32(struct tag *t, char **from)
 381{
 382        for (; t->hdr.size; t = tag_next(t))
 383                if (t->hdr.tag == ATAG_MEM &&
 384                    (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 385                     t->u.mem.start & ~PAGE_MASK)) {
 386                        printk(KERN_WARNING
 387                               "Clearing invalid memory bank %dKB@0x%08x\n",
 388                               t->u.mem.size / 1024, t->u.mem.start);
 389                        t->hdr.tag = 0;
 390                }
 391}
 392