LXR uboot/board/esd/pf5200/pf5200.c

   1/*
   2 * (C) Copyright 2003
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2004
   6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
   7 *
   8 * See file CREDITS for list of people who contributed to this
   9 * project.
  10 *
  11 * This program is free software; you can redistribute it and/or
  12 * modify it under the terms of the GNU General Public License as
  13 * published by the Free Software Foundation; either version 2 of
  14 * the License, or (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24 * MA 02111-1307 USA
  25 */
  26
  27/*
  28 * pf5200.c - main board support/init for the esd pf5200.
  29 */
  30
  31#include <common.h>
  32#include <mpc5xxx.h>
  33#include <pci.h>
  34#include <command.h>
  35#include <netdev.h>
  36
  37#include "mt46v16m16-75.h"
  38
  39void init_power_switch(void);
  40
  41static void sdram_start(int hi_addr)
  42{
  43        long hi_addr_bit = hi_addr ? 0x01000000 : 0;
  44
  45        /* unlock mode register */
  46        *(vu_long *) MPC5XXX_SDRAM_CTRL =
  47            SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
  48        __asm__ volatile ("sync");
  49
  50        /* precharge all banks */
  51        *(vu_long *) MPC5XXX_SDRAM_CTRL =
  52            SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
  53        __asm__ volatile ("sync");
  54
  55        /* set mode register: extended mode */
  56        *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
  57        __asm__ volatile ("sync");
  58
  59        /* set mode register: reset DLL */
  60        *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
  61        __asm__ volatile ("sync");
  62
  63        /* precharge all banks */
  64        *(vu_long *) MPC5XXX_SDRAM_CTRL =
  65            SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
  66        __asm__ volatile ("sync");
  67
  68        /* auto refresh */
  69        *(vu_long *) MPC5XXX_SDRAM_CTRL =
  70            SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
  71        __asm__ volatile ("sync");
  72
  73        /* set mode register */
  74        *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE;
  75        __asm__ volatile ("sync");
  76
  77        /* normal operation */
  78        *(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
  79        __asm__ volatile ("sync");
  80}
  81
  82/*
  83 * ATTENTION: Although partially referenced initdram does NOT make real use
  84 *            use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
  85 *            is something else than 0x00000000.
  86 */
  87
  88phys_size_t initdram(int board_type)
  89{
  90        ulong dramsize = 0;
  91        ulong test1, test2;
  92
  93        /* setup SDRAM chip selects */
  94        *(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */
  95        *(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x80000000; /* disabled */
  96        __asm__ volatile ("sync");
  97
  98        /* setup config registers */
  99        *(vu_long *) MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
 100        *(vu_long *) MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
 101        __asm__ volatile ("sync");
 102
 103        /* set tap delay */
 104        *(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
 105        __asm__ volatile ("sync");
 106
 107        /* find RAM size using SDRAM CS0 only */
 108        sdram_start(0);
 109        test1 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x80000000);
 110        sdram_start(1);
 111        test2 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x80000000);
 112
 113        if (test1 > test2) {
 114                sdram_start(0);
 115                dramsize = test1;
 116        } else {
 117                dramsize = test2;
 118        }
 119
 120        /* memory smaller than 1MB is impossible */
 121        if (dramsize < (1 << 20)) {
 122                dramsize = 0;
 123        }
 124
 125        /* set SDRAM CS0 size according to the amount of RAM found */
 126        if (dramsize > 0) {
 127                *(vu_long *) MPC5XXX_SDRAM_CS0CFG =
 128                    0x13 + __builtin_ffs(dramsize >> 20) - 1;
 129                /* let SDRAM CS1 start right after CS0 */
 130                *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;      /* 2G */
 131        } else {
 132#if 0
 133                *(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0;  /* disabled */
 134                /* let SDRAM CS1 start right after CS0 */
 135                *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;      /* 2G */
 136#else
 137                *(vu_long *) MPC5XXX_SDRAM_CS0CFG =
 138                    0x13 + __builtin_ffs(0x08000000 >> 20) - 1;
 139                /* let SDRAM CS1 start right after CS0 */
 140                *(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x08000000 + 0x0000001e;    /* 2G */
 141#endif
 142        }
 143
 144#if 0
 145        /* find RAM size using SDRAM CS1 only */
 146        sdram_start(0);
 147        get_ram_size((ulong *) (CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
 148        sdram_start(1);
 149        get_ram_size((ulong *) (CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
 150        sdram_start(0);
 151#endif
 152        /* set SDRAM CS1 size according to the amount of RAM found */
 153
 154        *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize;   /* disabled */
 155
 156        init_power_switch();
 157        return (dramsize);
 158}
 159
 160int checkboard(void)
 161{
 162        puts("Board: esd ParaFinder (pf5200)\n");
 163        return 0;
 164}
 165
 166void flash_preinit(void)
 167{
 168        /*
 169         * Now, when we are in RAM, enable flash write
 170         * access for detection process.
 171         * Note that CS_BOOT cannot be cleared when
 172         * executing in flash.
 173         */
 174        *(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1;        /* clear RO */
 175}
 176
 177void flash_afterinit(ulong size)
 178{
 179        if (size == 0x02000000) {
 180                /* adjust mapping */
 181                *(vu_long *) MPC5XXX_BOOTCS_START =
 182                    *(vu_long *) MPC5XXX_CS0_START =
 183                    START_REG(CONFIG_SYS_BOOTCS_START | size);
 184                *(vu_long *) MPC5XXX_BOOTCS_STOP =
 185                    *(vu_long *) MPC5XXX_CS0_STOP =
 186                    STOP_REG(CONFIG_SYS_BOOTCS_START | size, size);
 187        }
 188}
 189
 190#ifdef  CONFIG_PCI
 191static struct pci_controller hose;
 192
 193extern void pci_mpc5xxx_init(struct pci_controller *);
 194
 195void pci_init_board(void) {
 196        pci_mpc5xxx_init(&hose);
 197}
 198#endif
 199
 200#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
 201
 202void init_ide_reset(void)
 203{
 204        debug("init_ide_reset\n");
 205
 206        /* Configure PSC1_4 as GPIO output for ATA reset */
 207        *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
 208        *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
 209}
 210
 211void ide_set_reset(int idereset)
 212{
 213        debug("ide_reset(%d)\n", idereset);
 214
 215        if (idereset) {
 216                *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
 217        } else {
 218                *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
 219        }
 220}
 221#endif
 222
 223#define MPC5XXX_SIMPLEIO_GPIO_ENABLE       (MPC5XXX_GPIO + 0x0004)
 224#define MPC5XXX_SIMPLEIO_GPIO_DIR          (MPC5XXX_GPIO + 0x000C)
 225#define MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT  (MPC5XXX_GPIO + 0x0010)
 226#define MPC5XXX_SIMPLEIO_GPIO_DATA_INPUT   (MPC5XXX_GPIO + 0x0014)
 227
 228#define MPC5XXX_INTERRUPT_GPIO_ENABLE      (MPC5XXX_GPIO + 0x0020)
 229#define MPC5XXX_INTERRUPT_GPIO_DIR         (MPC5XXX_GPIO + 0x0028)
 230#define MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x002C)
 231#define MPC5XXX_INTERRUPT_GPIO_STATUS      (MPC5XXX_GPIO + 0x003C)
 232
 233#define GPIO_WU6        0x40000000UL
 234#define GPIO_USB0       0x00010000UL
 235#define GPIO_USB9       0x08000000UL
 236#define GPIO_USB9S      0x00080000UL
 237
 238void init_power_switch(void)
 239{
 240        debug("init_power_switch\n");
 241
 242        /* Configure GPIO_WU6 as GPIO output for ATA reset */
 243        *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_WU6;
 244        *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WU6;
 245        *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_WU6;
 246        __asm__ volatile ("sync");
 247
 248        *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT &= ~GPIO_USB0;
 249        *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_ENABLE |= GPIO_USB0;
 250        *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DIR |= GPIO_USB0;
 251        __asm__ volatile ("sync");
 252
 253        *(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;
 254        *(vu_long *) MPC5XXX_INTERRUPT_GPIO_ENABLE &= ~GPIO_USB9;
 255        __asm__ volatile ("sync");
 256
 257        if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) == 0) {
 258                *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |= GPIO_USB0;
 259                __asm__ volatile ("sync");
 260        }
 261        *(vu_char *) CONFIG_SYS_CS1_START = 0x02;       /* Red Power LED on */
 262        __asm__ volatile ("sync");
 263
 264        *(vu_char *) (CONFIG_SYS_CS1_START + 1) = 0x02; /* Disable driver for KB11 */
 265        __asm__ volatile ("sync");
 266}
 267
 268int board_eth_init(bd_t *bis)
 269{
 270        return pci_eth_init(bis);
 271}
 272
 273void power_set_reset(int power)
 274{
 275        debug("ide_set_reset(%d)\n", power);
 276
 277        if (power) {
 278                *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_WU6;
 279                *(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;
 280        } else {
 281                *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_WU6;
 282                if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) ==
 283                    0) {
 284                        *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |=
 285                            GPIO_USB0;
 286                }
 287
 288        }
 289}
 290
 291int do_poweroff(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 292{
 293        power_set_reset(1);
 294        return (0);
 295}
 296
 297U_BOOT_CMD(poweroff, 1, 1, do_poweroff, "Switch off power", "");
 298
 299int phypower(int flag)
 300{
 301        u32 addr;
 302        vu_long *reg;
 303        int status;
 304        pci_dev_t dev;
 305
 306        dev = PCI_BDF(0, 0x18, 0);
 307        status = pci_read_config_dword(dev, PCI_BASE_ADDRESS_1, &addr);
 308        if (status == 0) {
 309                reg = (vu_long *) (addr + 0x00000040);
 310                *reg |= 0x40000000;
 311                __asm__ volatile ("sync");
 312
 313                reg = (vu_long *) (addr + 0x001000c);
 314                *reg |= 0x20000000;
 315                __asm__ volatile ("sync");
 316
 317                reg = (vu_long *) (addr + 0x0010004);
 318                if (flag != 0) {
 319                        *reg &= ~0x20000000;
 320                } else {
 321                        *reg |= 0x20000000;
 322                }
 323                __asm__ volatile ("sync");
 324        }
 325        return (status);
 326}
 327
 328int do_phypower(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 329{
 330        int status;
 331
 332        if (argv[1][0] == '0') {
 333                status = phypower(0);
 334        } else {
 335                status = phypower(1);
 336        }
 337        return (0);
 338}
 339
 340U_BOOT_CMD(phypower, 2, 2, do_phypower,
 341           "Switch power of ethernet phy", "");
 342
 343int do_writepci(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 344{
 345        unsigned int addr;
 346        unsigned int size;
 347        int i;
 348        volatile unsigned long *ptr;
 349
 350        addr = simple_strtol(argv[1], NULL, 16);
 351        size = simple_strtol(argv[2], NULL, 16);
 352
 353        printf("\nWriting at addr %08x, size %08x.\n", addr, size);
 354
 355        while (1) {
 356                ptr = (volatile unsigned long *)addr;
 357                for (i = 0; i < (size >> 2); i++) {
 358                        *ptr++ = i;
 359                }
 360
 361                /* Abort if ctrl-c was pressed */
 362                if (ctrlc()) {
 363                        puts("\nAbort\n");
 364                        return 0;
 365                }
 366                putc('.');
 367        }
 368        return 0;
 369}
 370
 371U_BOOT_CMD(writepci, 3, 1, do_writepci,
 372        "Write some data to pcibus",
 373        "<addr> <size>\n"
 374        ""
 375);
 376