LXR uboot/board/freescale/mpc8349itx/mpc8349itx.c

   1/*
   2 * Copyright (C) Freescale Semiconductor, Inc. 2006.
   3 *
   4 * See file CREDITS for list of people who contributed to this
   5 * project.
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License as
   9 * published by the Free Software Foundation; either version 2 of
  10 * the License, or (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS for A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20 * MA 02111-1307 USA
  21 */
  22
  23#include <common.h>
  24#include <ioports.h>
  25#include <mpc83xx.h>
  26#include <i2c.h>
  27#include <miiphy.h>
  28#include <vsc7385.h>
  29#ifdef CONFIG_PCI
  30#include <asm/mpc8349_pci.h>
  31#include <pci.h>
  32#endif
  33#include <spd_sdram.h>
  34#include <asm/mmu.h>
  35#if defined(CONFIG_OF_LIBFDT)
  36#include <libfdt.h>
  37#endif
  38
  39#ifndef CONFIG_SPD_EEPROM
  40/*************************************************************************
  41 *  fixed sdram init -- doesn't use serial presence detect.
  42 ************************************************************************/
  43int fixed_sdram(void)
  44{
  45        volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
  46        u32 ddr_size;           /* The size of RAM, in bytes */
  47        u32 ddr_size_log2 = 0;
  48
  49        for (ddr_size = CONFIG_SYS_DDR_SIZE * 0x100000; ddr_size > 1; ddr_size >>= 1) {
  50                if (ddr_size & 1) {
  51                        return -1;
  52                }
  53                ddr_size_log2++;
  54        }
  55
  56        im->sysconf.ddrlaw[0].ar =
  57            LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
  58        im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000;
  59
  60        /* Only one CS0 for DDR */
  61        im->ddr.csbnds[0].csbnds = 0x0000000f;
  62        im->ddr.cs_config[0] = CONFIG_SYS_DDR_CONFIG;
  63
  64        debug("cs0_bnds = 0x%08x\n", im->ddr.csbnds[0].csbnds);
  65        debug("cs0_config = 0x%08x\n", im->ddr.cs_config[0]);
  66
  67        debug("DDR:bar=0x%08x\n", im->sysconf.ddrlaw[0].bar);
  68        debug("DDR:ar=0x%08x\n", im->sysconf.ddrlaw[0].ar);
  69
  70        im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
  71        im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;/* Was "2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT" */
  72        im->ddr.sdram_cfg = SDRAM_CFG_SREN | SDRAM_CFG_SDRAM_TYPE_DDR1;
  73        im->ddr.sdram_mode =
  74            (0x0000 << SDRAM_MODE_ESD_SHIFT) | (0x0032 << SDRAM_MODE_SD_SHIFT);
  75        im->ddr.sdram_interval =
  76            (0x0410 << SDRAM_INTERVAL_REFINT_SHIFT) | (0x0100 <<
  77                                                       SDRAM_INTERVAL_BSTOPRE_SHIFT);
  78        im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_SDRAM_CLK_CNTL;
  79
  80        udelay(200);
  81
  82        im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
  83
  84        debug("DDR:timing_cfg_1=0x%08x\n", im->ddr.timing_cfg_1);
  85        debug("DDR:timing_cfg_2=0x%08x\n", im->ddr.timing_cfg_2);
  86        debug("DDR:sdram_mode=0x%08x\n", im->ddr.sdram_mode);
  87        debug("DDR:sdram_interval=0x%08x\n", im->ddr.sdram_interval);
  88        debug("DDR:sdram_cfg=0x%08x\n", im->ddr.sdram_cfg);
  89
  90        return CONFIG_SYS_DDR_SIZE;
  91}
  92#endif
  93
  94#ifdef CONFIG_PCI
  95/*
  96 * Initialize PCI Devices, report devices found
  97 */
  98#ifndef CONFIG_PCI_PNP
  99static struct pci_config_table pci_mpc83xxmitx_config_table[] = {
 100        {
 101         PCI_ANY_ID,
 102         PCI_ANY_ID,
 103         PCI_ANY_ID,
 104         PCI_ANY_ID,
 105         0x0f,
 106         PCI_ANY_ID,
 107         pci_cfgfunc_config_device,
 108         {
 109          PCI_ENET0_IOADDR,
 110          PCI_ENET0_MEMADDR,
 111          PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}
 112         },
 113        {}
 114}
 115#endif
 116
 117volatile static struct pci_controller hose[] = {
 118        {
 119#ifndef CONFIG_PCI_PNP
 120              config_table:pci_mpc83xxmitx_config_table,
 121#endif
 122         },
 123        {
 124#ifndef CONFIG_PCI_PNP
 125              config_table:pci_mpc83xxmitx_config_table,
 126#endif
 127         }
 128};
 129#endif                          /* CONFIG_PCI */
 130
 131phys_size_t initdram(int board_type)
 132{
 133        volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
 134        u32 msize = 0;
 135#ifdef CONFIG_DDR_ECC
 136        volatile ddr83xx_t *ddr = &im->ddr;
 137#endif
 138
 139        if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
 140                return -1;
 141
 142        /* DDR SDRAM - Main SODIMM */
 143        im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_BASE & LAWBAR_BAR;
 144#ifdef CONFIG_SPD_EEPROM
 145        msize = spd_sdram();
 146#else
 147        msize = fixed_sdram();
 148#endif
 149
 150#ifdef CONFIG_DDR_ECC
 151        if (ddr->sdram_cfg & SDRAM_CFG_ECC_EN)
 152                /* Unlike every other board, on the 83xx spd_sdram() returns
 153                   megabytes instead of just bytes.  That's why we need to
 154                   multiple by 1MB when calling ddr_enable_ecc(). */
 155                ddr_enable_ecc(msize * 1048576);
 156#endif
 157
 158        /* return total bus RAM size(bytes) */
 159        return msize * 1024 * 1024;
 160}
 161
 162int checkboard(void)
 163{
 164#ifdef CONFIG_MPC8349ITX
 165        puts("Board: Freescale MPC8349E-mITX\n");
 166#else
 167        puts("Board: Freescale MPC8349E-mITX-GP\n");
 168#endif
 169
 170        return 0;
 171}
 172
 173/*
 174 * Implement a work-around for a hardware problem with compact
 175 * flash.
 176 *
 177 * Program the UPM if compact flash is enabled.
 178 */
 179int misc_init_f(void)
 180{
 181#ifdef CONFIG_VSC7385_ENET
 182        volatile u32 *vsc7385_cpuctrl;
 183
 184        /* 0x1c0c0 is the VSC7385 CPU Control (CPUCTRL) Register.  The power up
 185           default of VSC7385 L1_IRQ and L2_IRQ requests are active high.  That
 186           means it is 0 when the IRQ is not active.  This makes the wire-AND
 187           logic always assert IRQ7 to CPU even if there is no request from the
 188           switch.  Since the compact flash and the switch share the same IRQ,
 189           the Linux kernel will think that the compact flash is requesting irq
 190           and get stuck when it tries to clear the IRQ.  Thus we need to set
 191           the L2_IRQ0 and L2_IRQ1 to active low.
 192
 193           The following code sets the L1_IRQ and L2_IRQ polarity to active low.
 194           Without this code, compact flash will not work in Linux because
 195           unlike U-Boot, Linux uses the IRQ, so this code is necessary if we
 196           don't enable compact flash for U-Boot.
 197         */
 198
 199        vsc7385_cpuctrl = (volatile u32 *)(CONFIG_SYS_VSC7385_BASE + 0x1c0c0);
 200        *vsc7385_cpuctrl |= 0x0c;
 201#endif
 202
 203#ifdef CONFIG_COMPACT_FLASH
 204        /* UPM Table Configuration Code */
 205        static uint UPMATable[] = {
 206                0xcffffc00, 0x0fffff00, 0x0fafff00, 0x0fafff00,
 207                0x0faffd00, 0x0faffc04, 0x0ffffc00, 0x3ffffc01,
 208                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 209                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 210                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfff7fc00,
 211                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
 212                0xcffffc00, 0x0fffff00, 0x0ff3ff00, 0x0ff3ff00,
 213                0x0ff3fe00, 0x0ffffc00, 0x3ffffc05, 0xfffffc00,
 214                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 215                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 216                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 217                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
 218                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 219                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
 220                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
 221                0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01
 222        };
 223        volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
 224        volatile fsl_lbus_t *lbus = &immap->lbus;
 225
 226        lbus->bank[3].br = CONFIG_SYS_BR3_PRELIM;
 227        lbus->bank[3].or = CONFIG_SYS_OR3_PRELIM;
 228
 229        /* Program the MAMR. RFEN=0, OP=00, UWPL=1, AM=000, DS=01, G0CL=000,
 230           GPL4=0, RLF=0001, WLF=0001, TLF=0001, MAD=000000
 231         */
 232        lbus->mamr = 0x08404440;
 233
 234        upmconfig(0, UPMATable, sizeof(UPMATable) / sizeof(UPMATable[0]));
 235
 236        puts("UPMA:  Configured for compact flash\n");
 237#endif
 238
 239        return 0;
 240}
 241
 242/*
 243 * Miscellaneous late-boot configurations
 244 *
 245 * Make sure the EEPROM has the HRCW correctly programmed.
 246 * Make sure the RTC is correctly programmed.
 247 *
 248 * The MPC8349E-mITX can be configured to load the HRCW from
 249 * EEPROM instead of flash.  This is controlled via jumpers
 250 * LGPL0, 1, and 3.  Normally, these jumpers are set to 000 (all
 251 * jumpered), but if they're set to 001 or 010, then the HRCW is
 252 * read from the "I2C EEPROM".
 253 *
 254 * This function makes sure that the I2C EEPROM is programmed
 255 * correctly.
 256 *
 257 * If a VSC7385 microcode image is present, then upload it.
 258 */
 259int misc_init_r(void)
 260{
 261        int rc = 0;
 262
 263#ifdef CONFIG_HARD_I2C
 264
 265        unsigned int orig_bus = i2c_get_bus_num();
 266        u8 i2c_data;
 267
 268#ifdef CONFIG_SYS_I2C_RTC_ADDR
 269        u8 ds1339_data[17];
 270#endif
 271
 272#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
 273        static u8 eeprom_data[] =       /* HRCW data */
 274        {
 275                0xAA, 0x55, 0xAA,       /* Preamble */
 276                0x7C,                   /* ACS=0, BYTE_EN=1111, CONT=1 */
 277                0x02, 0x40,             /* RCWL ADDR=0x0_0900 */
 278                (CONFIG_SYS_HRCW_LOW >> 24) & 0xFF,
 279                (CONFIG_SYS_HRCW_LOW >> 16) & 0xFF,
 280                (CONFIG_SYS_HRCW_LOW >> 8) & 0xFF,
 281                CONFIG_SYS_HRCW_LOW & 0xFF,
 282                0x7C,                   /* ACS=0, BYTE_EN=1111, CONT=1 */
 283                0x02, 0x41,             /* RCWH ADDR=0x0_0904 */
 284                (CONFIG_SYS_HRCW_HIGH >> 24) & 0xFF,
 285                (CONFIG_SYS_HRCW_HIGH >> 16) & 0xFF,
 286                (CONFIG_SYS_HRCW_HIGH >> 8) & 0xFF,
 287                CONFIG_SYS_HRCW_HIGH & 0xFF
 288        };
 289
 290        u8 data[sizeof(eeprom_data)];
 291#endif
 292
 293        printf("Board revision: ");
 294        i2c_set_bus_num(1);
 295        if (i2c_read(CONFIG_SYS_I2C_8574A_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) == 0)
 296                printf("%u.%u (PCF8475A)\n", (i2c_data & 0x02) >> 1, i2c_data & 0x01);
 297        else if (i2c_read(CONFIG_SYS_I2C_8574_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) == 0)
 298                printf("%u.%u (PCF8475)\n",  (i2c_data & 0x02) >> 1, i2c_data & 0x01);
 299        else {
 300                printf("Unknown\n");
 301                rc = 1;
 302        }
 303
 304#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
 305        i2c_set_bus_num(0);
 306
 307        if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, data, sizeof(data)) == 0) {
 308                if (memcmp(data, eeprom_data, sizeof(data)) != 0) {
 309                        if (i2c_write
 310                            (CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, eeprom_data,
 311                             sizeof(eeprom_data)) != 0) {
 312                                puts("Failure writing the HRCW to EEPROM via I2C.\n");
 313                                rc = 1;
 314                        }
 315                }
 316        } else {
 317                puts("Failure reading the HRCW from EEPROM via I2C.\n");
 318                rc = 1;
 319        }
 320#endif
 321
 322#ifdef CONFIG_SYS_I2C_RTC_ADDR
 323        i2c_set_bus_num(1);
 324
 325        if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, ds1339_data, sizeof(ds1339_data))
 326            == 0) {
 327
 328                /* Work-around for MPC8349E-mITX bug #13601.
 329                   If the RTC does not contain valid register values, the DS1339
 330                   Linux driver will not work.
 331                 */
 332
 333                /* Make sure status register bits 6-2 are zero */
 334                ds1339_data[0x0f] &= ~0x7c;
 335
 336                /* Check for a valid day register value */
 337                ds1339_data[0x03] &= ~0xf8;
 338                if (ds1339_data[0x03] == 0) {
 339                        ds1339_data[0x03] = 1;
 340                }
 341
 342                /* Check for a valid date register value */
 343                ds1339_data[0x04] &= ~0xc0;
 344                if ((ds1339_data[0x04] == 0) ||
 345                    ((ds1339_data[0x04] & 0x0f) > 9) ||
 346                    (ds1339_data[0x04] >= 0x32)) {
 347                        ds1339_data[0x04] = 1;
 348                }
 349
 350                /* Check for a valid month register value */
 351                ds1339_data[0x05] &= ~0x60;
 352
 353                if ((ds1339_data[0x05] == 0) ||
 354                    ((ds1339_data[0x05] & 0x0f) > 9) ||
 355                    ((ds1339_data[0x05] >= 0x13)
 356                     && (ds1339_data[0x05] <= 0x19))) {
 357                        ds1339_data[0x05] = 1;
 358                }
 359
 360                /* Enable Oscillator and rate select */
 361                ds1339_data[0x0e] = 0x1c;
 362
 363                /* Work-around for MPC8349E-mITX bug #13330.
 364                   Ensure that the RTC control register contains the value 0x1c.
 365                   This affects SATA performance.
 366                 */
 367
 368                if (i2c_write
 369                    (CONFIG_SYS_I2C_RTC_ADDR, 0, 1, ds1339_data,
 370                     sizeof(ds1339_data))) {
 371                        puts("Failure writing to the RTC via I2C.\n");
 372                        rc = 1;
 373                }
 374        } else {
 375                puts("Failure reading from the RTC via I2C.\n");
 376                rc = 1;
 377        }
 378#endif
 379
 380        i2c_set_bus_num(orig_bus);
 381#endif
 382
 383#ifdef CONFIG_VSC7385_IMAGE
 384        if (vsc7385_upload_firmware((void *) CONFIG_VSC7385_IMAGE,
 385                CONFIG_VSC7385_IMAGE_SIZE)) {
 386                puts("Failure uploading VSC7385 microcode.\n");
 387                rc = 1;
 388        }
 389#endif
 390
 391        return rc;
 392}
 393
 394#if defined(CONFIG_OF_BOARD_SETUP)
 395void ft_board_setup(void *blob, bd_t *bd)
 396{
 397        ft_cpu_setup(blob, bd);
 398#ifdef CONFIG_PCI
 399        ft_pci_setup(blob, bd);
 400#endif
 401}
 402#endif
 403