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/timex.h>
  28#include <asm/mach/arch.h>
  29#include <asm/mach/map.h>
  30#include <asm/mach/time.h>
  31#include <mach/bridge-regs.h>
  32#include <mach/hardware.h>
  33#include <mach/orion5x.h>
  34#include <linux/platform_data/mtd-orion_nand.h>
  35#include <linux/platform_data/usb-ehci-orion.h>
  36#include <plat/time.h>
  37#include <plat/common.h>
  38#include "common.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, CLK_IS_ROOT,
  71                                       orion5x_tclk);
  72
  73        orion_clkdev_init(tclk);
  74}
  75
  76/*****************************************************************************
  77 * EHCI0
  78 ****************************************************************************/
  79void __init orion5x_ehci0_init(void)
  80{
  81        orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
  82                        EHCI_PHY_ORION);
  83}
  84
  85
  86/*****************************************************************************
  87 * EHCI1
  88 ****************************************************************************/
  89void __init orion5x_ehci1_init(void)
  90{
  91        orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
  92}
  93
  94
  95/*****************************************************************************
  96 * GE00
  97 ****************************************************************************/
  98void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
  99{
 100        orion_ge00_init(eth_data,
 101                        ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
 102                        IRQ_ORION5X_ETH_ERR,
 103                        MV643XX_TX_CSUM_DEFAULT_LIMIT);
 104}
 105
 106
 107/*****************************************************************************
 108 * Ethernet switch
 109 ****************************************************************************/
 110void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
 111{
 112        orion_ge00_switch_init(d, irq);
 113}
 114
 115
 116/*****************************************************************************
 117 * I2C
 118 ****************************************************************************/
 119void __init orion5x_i2c_init(void)
 120{
 121        orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
 122
 123}
 124
 125
 126/*****************************************************************************
 127 * SATA
 128 ****************************************************************************/
 129void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
 130{
 131        orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
 132}
 133
 134
 135/*****************************************************************************
 136 * SPI
 137 ****************************************************************************/
 138void __init orion5x_spi_init()
 139{
 140        orion_spi_init(SPI_PHYS_BASE);
 141}
 142
 143
 144/*****************************************************************************
 145 * UART0
 146 ****************************************************************************/
 147void __init orion5x_uart0_init(void)
 148{
 149        orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
 150                         IRQ_ORION5X_UART0, tclk);
 151}
 152
 153/*****************************************************************************
 154 * UART1
 155 ****************************************************************************/
 156void __init orion5x_uart1_init(void)
 157{
 158        orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
 159                         IRQ_ORION5X_UART1, tclk);
 160}
 161
 162/*****************************************************************************
 163 * XOR engine
 164 ****************************************************************************/
 165void __init orion5x_xor_init(void)
 166{
 167        orion_xor0_init(ORION5X_XOR_PHYS_BASE,
 168                        ORION5X_XOR_PHYS_BASE + 0x200,
 169                        IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
 170}
 171
 172/*****************************************************************************
 173 * Cryptographic Engines and Security Accelerator (CESA)
 174 ****************************************************************************/
 175static void __init orion5x_crypto_init(void)
 176{
 177        mvebu_mbus_add_window("sram", 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 ****************************************************************************/
 186void __init orion5x_wdt_init(void)
 187{
 188        orion_wdt_init();
 189}
 190
 191
 192/*****************************************************************************
 193 * Time handling
 194 ****************************************************************************/
 195void __init orion5x_init_early(void)
 196{
 197        u32 rev, dev;
 198        const char *mbus_soc_name;
 199
 200        orion_time_set_base(TIMER_VIRT_BASE);
 201
 202        /* Initialize the MBUS driver */
 203        orion5x_pcie_id(&dev, &rev);
 204        if (dev == MV88F5281_DEV_ID)
 205                mbus_soc_name = "marvell,orion5x-88f5281-mbus";
 206        else if (dev == MV88F5182_DEV_ID)
 207                mbus_soc_name = "marvell,orion5x-88f5182-mbus";
 208        else if (dev == MV88F5181_DEV_ID)
 209                mbus_soc_name = "marvell,orion5x-88f5181-mbus";
 210        else if (dev == MV88F6183_DEV_ID)
 211                mbus_soc_name = "marvell,orion5x-88f6183-mbus";
 212        else
 213                mbus_soc_name = NULL;
 214        mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE,
 215                        ORION5X_BRIDGE_WINS_SZ,
 216                        ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ);
 217}
 218
 219void orion5x_setup_wins(void)
 220{
 221        /*
 222         * The PCIe windows will no longer be statically allocated
 223         * here once Orion5x is migrated to the pci-mvebu driver.
 224         */
 225        mvebu_mbus_add_window_remap_flags("pcie0.0", ORION5X_PCIE_IO_PHYS_BASE,
 226                                          ORION5X_PCIE_IO_SIZE,
 227                                          ORION5X_PCIE_IO_BUS_BASE,
 228                                          MVEBU_MBUS_PCI_IO);
 229        mvebu_mbus_add_window_remap_flags("pcie0.0", ORION5X_PCIE_MEM_PHYS_BASE,
 230                                          ORION5X_PCIE_MEM_SIZE,
 231                                          MVEBU_MBUS_NO_REMAP,
 232                                          MVEBU_MBUS_PCI_MEM);
 233        mvebu_mbus_add_window_remap_flags("pci0.0", ORION5X_PCI_IO_PHYS_BASE,
 234                                          ORION5X_PCI_IO_SIZE,
 235                                          ORION5X_PCI_IO_BUS_BASE,
 236                                          MVEBU_MBUS_PCI_IO);
 237        mvebu_mbus_add_window_remap_flags("pci0.0", ORION5X_PCI_MEM_PHYS_BASE,
 238                                          ORION5X_PCI_MEM_SIZE,
 239                                          MVEBU_MBUS_NO_REMAP,
 240                                          MVEBU_MBUS_PCI_MEM);
 241}
 242
 243int orion5x_tclk;
 244
 245int __init orion5x_find_tclk(void)
 246{
 247        u32 dev, rev;
 248
 249        orion5x_pcie_id(&dev, &rev);
 250        if (dev == MV88F6183_DEV_ID &&
 251            (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
 252                return 133333333;
 253
 254        return 166666667;
 255}
 256
 257void __init orion5x_timer_init(void)
 258{
 259        orion5x_tclk = orion5x_find_tclk();
 260
 261        orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 262                        IRQ_ORION5X_BRIDGE, orion5x_tclk);
 263}
 264
 265
 266/*****************************************************************************
 267 * General
 268 ****************************************************************************/
 269/*
 270 * Identify device ID and rev from PCIe configuration header space '0'.
 271 */
 272void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
 273{
 274        orion5x_pcie_id(dev, rev);
 275
 276        if (*dev == MV88F5281_DEV_ID) {
 277                if (*rev == MV88F5281_REV_D2) {
 278                        *dev_name = "MV88F5281-D2";
 279                } else if (*rev == MV88F5281_REV_D1) {
 280                        *dev_name = "MV88F5281-D1";
 281                } else if (*rev == MV88F5281_REV_D0) {
 282                        *dev_name = "MV88F5281-D0";
 283                } else {
 284                        *dev_name = "MV88F5281-Rev-Unsupported";
 285                }
 286        } else if (*dev == MV88F5182_DEV_ID) {
 287                if (*rev == MV88F5182_REV_A2) {
 288                        *dev_name = "MV88F5182-A2";
 289                } else {
 290                        *dev_name = "MV88F5182-Rev-Unsupported";
 291                }
 292        } else if (*dev == MV88F5181_DEV_ID) {
 293                if (*rev == MV88F5181_REV_B1) {
 294                        *dev_name = "MV88F5181-Rev-B1";
 295                } else if (*rev == MV88F5181L_REV_A1) {
 296                        *dev_name = "MV88F5181L-Rev-A1";
 297                } else {
 298                        *dev_name = "MV88F5181(L)-Rev-Unsupported";
 299                }
 300        } else if (*dev == MV88F6183_DEV_ID) {
 301                if (*rev == MV88F6183_REV_B0) {
 302                        *dev_name = "MV88F6183-Rev-B0";
 303                } else {
 304                        *dev_name = "MV88F6183-Rev-Unsupported";
 305                }
 306        } else {
 307                *dev_name = "Device-Unknown";
 308        }
 309}
 310
 311void __init orion5x_init(void)
 312{
 313        char *dev_name;
 314        u32 dev, rev;
 315
 316        orion5x_id(&dev, &rev, &dev_name);
 317        printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
 318
 319        /*
 320         * Setup Orion address map
 321         */
 322        orion5x_setup_wins();
 323
 324        /* Setup root of clk tree */
 325        clk_init();
 326
 327        /*
 328         * Don't issue "Wait for Interrupt" instruction if we are
 329         * running on D0 5281 silicon.
 330         */
 331        if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
 332                printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
 333                cpu_idle_poll_ctrl(true);
 334        }
 335
 336        /*
 337         * The 5082/5181l/5182/6082/6082l/6183 have crypto
 338         * while 5180n/5181/5281 don't have crypto.
 339         */
 340        if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
 341            dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
 342                orion5x_crypto_init();
 343
 344        /*
 345         * Register watchdog driver
 346         */
 347        orion5x_wdt_init();
 348}
 349
 350void orion5x_restart(char mode, const char *cmd)
 351{
 352        /*
 353         * Enable and issue soft reset
 354         */
 355        orion5x_setbits(RSTOUTn_MASK, (1 << 2));
 356        orion5x_setbits(CPU_SOFT_RESET, 1);
 357        mdelay(200);
 358        orion5x_clrbits(CPU_SOFT_RESET, 1);
 359}
 360
 361/*
 362 * Many orion-based systems have buggy bootloader implementations.
 363 * This is a common fixup for bogus memory tags.
 364 */
 365void __init tag_fixup_mem32(struct tag *t, char **from,
 366                            struct meminfo *meminfo)
 367{
 368        for (; t->hdr.size; t = tag_next(t))
 369                if (t->hdr.tag == ATAG_MEM &&
 370                    (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 371                     t->u.mem.start & ~PAGE_MASK)) {
 372                        printk(KERN_WARNING
 373                               "Clearing invalid memory bank %dKB@0x%08x\n",
 374                               t->u.mem.size / 1024, t->u.mem.start);
 375                        t->hdr.tag = 0;
 376                }
 377}
 378