arch/nds32/lib/board.c

   1 /*
   2  * (C) Copyright 2002-2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Copyright (C) 2011 Andes Technology Corporation
   6  * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
   7  * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <command.h>
  30 #include <malloc.h>
  31 #include <stdio_dev.h>
  32 #include <timestamp.h>
  33 #include <version.h>
  34 #include <net.h>
  35 #include <serial.h>
  36 #include <nand.h>
  37 #include <onenand_uboot.h>
  38 #include <mmc.h>
  39
  40 DECLARE_GLOBAL_DATA_PTR;
  41
  42 ulong monitor_flash_len;
  43
  44 /*
  45  * Init Utilities
  46  */
  47
  48 #if !defined(CONFIG_BAUDRATE)
  49 #define CONFIG_BAUDRATE 38400
  50 #endif
  51 static int init_baudrate(void)
  52 {
  53         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
  54         return 0;
  55 }
  56
  57 /*
  58  * WARNING: this code looks "cleaner" than the PowerPC version, but
  59  * has the disadvantage that you either get nothing, or everything.
  60  * On PowerPC, you might see "DRAM: " before the system hangs - which
  61  * gives a simple yet clear indication which part of the
  62  * initialization if failing.
  63  */
  64 static int display_dram_config(void)
  65 {
  66         int i;
  67
  68 #ifdef DEBUG
  69         puts("RAM Configuration:\n");
  70
  71         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
  72                 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
  73                 print_size(gd->bd->bi_dram[i].size, "\n");
  74         }
  75 #else
  76         ulong size = 0;
  77
  78         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
  79                 size += gd->bd->bi_dram[i].size;
  80
  81         puts("DRAM:  ");
  82         print_size(size, "\n");
  83 #endif
  84
  85         return 0;
  86 }
  87
  88 #ifndef CONFIG_SYS_NO_FLASH
  89 static void display_flash_config(ulong size)
  90 {
  91         puts("Flash: ");
  92         print_size(size, "\n");
  93 }
  94 #endif /* CONFIG_SYS_NO_FLASH */
  95
  96 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
  97 #include <pci.h>
  98 static int nds32_pci_init(void)
  99 {
 100         pci_init();
 101         return 0;
 102 }
 103 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
 104
 105 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
 106 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
 107 static int pmu_init(void)
 108 {
 109 #if defined(CONFIG_FTPMU010_POWER)
 110 #ifdef __NDS32_N1213_43U1H__    /* AG101: internal definition in toolchain */
 111         ftpmu010_sdram_clk_disable(CONFIG_SYS_FTPMU010_PDLLCR0_HCLKOUTDIS);
 112         ftpmu010_mfpsr_select_dev(FTPMU010_MFPSR_AC97CLKSEL);
 113         ftpmu010_sdramhtc_set(CONFIG_SYS_FTPMU010_SDRAMHTC);
 114 #endif  /* __NDS32_N1213_43U1H__ */
 115 #endif
 116         return 0;
 117 }
 118 #endif
 119 #endif
 120
 121 /*
 122  * Breathe some life into the board...
 123  *
 124  * Initialize a serial port as console, and carry out some hardware
 125  * tests.
 126  *
 127  * The first part of initialization is running from Flash memory;
 128  * its main purpose is to initialize the RAM so that we
 129  * can relocate the monitor code to RAM.
 130  */
 131
 132 /*
 133  * All attempts to come up with a "common" initialization sequence
 134  * that works for all boards and architectures failed: some of the
 135  * requirements are just _too_ different. To get rid of the resulting
 136  * mess of board dependent #ifdef'ed code we now make the whole
 137  * initialization sequence configurable to the user.
 138  *
 139  * The requirements for any new initalization function is simple: it
 140  * receives a pointer to the "global data" structure as it's only
 141  * argument, and returns an integer return code, where 0 means
 142  * "continue" and != 0 means "fatal error, hang the system".
 143  */
 144 typedef int (init_fnc_t)(void);
 145
 146 void __dram_init_banksize(void)
 147 {
 148         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 149         gd->bd->bi_dram[0].size =  gd->ram_size;
 150 }
 151 void dram_init_banksize(void)
 152         __attribute__((weak, alias("__dram_init_banksize")));
 153
 154 init_fnc_t *init_sequence[] = {
 155 #if defined(CONFIG_ARCH_CPU_INIT)
 156         arch_cpu_init,          /* basic arch cpu dependent setup */
 157 #endif
 158 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
 159 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
 160         pmu_init,
 161 #endif
 162 #endif
 163         board_init,             /* basic board dependent setup */
 164 #if defined(CONFIG_USE_IRQ)
 165         interrupt_init,         /* set up exceptions */
 166 #endif
 167         timer_init,             /* initialize timer */
 168         env_init,               /* initialize environment */
 169         init_baudrate,          /* initialze baudrate settings */
 170         serial_init,            /* serial communications setup */
 171         console_init_f,         /* stage 1 init of console */
 172 #if defined(CONFIG_DISPLAY_BOARDINFO)
 173         checkboard,             /* display board info */
 174 #endif
 175 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 176         init_func_i2c,
 177 #endif
 178         dram_init,              /* configure available RAM banks */
 179         display_dram_config,
 180         NULL,
 181 };
 182
 183 void board_init_f(ulong bootflag)
 184 {
 185         bd_t *bd;
 186         init_fnc_t **init_fnc_ptr;
 187         gd_t *id;
 188         ulong addr, addr_sp;
 189
 190         /* Pointer is writable since we allocated a register for it */
 191         gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
 192
 193         memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
 194
 195         gd->mon_len = (unsigned int)(&__bss_end) - (unsigned int)(&_start);
 196
 197         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 198                 if ((*init_fnc_ptr)() != 0)
 199                         hang();
 200         }
 201
 202         debug("monitor len: %08lX\n", gd->mon_len);
 203         /*
 204          * Ram is setup, size stored in gd !!
 205          */
 206         debug("ramsize: %08lX\n", gd->ram_size);
 207
 208         addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
 209
 210         /* round down to next 4 kB limit */
 211         addr &= ~(4096 - 1);
 212         debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
 213
 214 #ifdef CONFIG_LCD
 215 #ifdef CONFIG_FB_ADDR
 216         gd->fb_base = CONFIG_FB_ADDR;
 217 #else
 218         /* reserve memory for LCD display (always full pages) */
 219         addr = lcd_setmem(addr);
 220         gd->fb_base = addr;
 221 #endif /* CONFIG_FB_ADDR */
 222 #endif /* CONFIG_LCD */
 223
 224         /*
 225          * reserve memory for U-Boot code, data & bss
 226          * round down to next 4 kB limit
 227          */
 228         addr -= gd->mon_len;
 229         addr &= ~(4096 - 1);
 230
 231         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
 232
 233         /*
 234          * reserve memory for malloc() arena
 235          */
 236         addr_sp = addr - TOTAL_MALLOC_LEN;
 237         debug("Reserving %dk for malloc() at: %08lx\n",
 238                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 239         /*
 240          * (permanently) allocate a Board Info struct
 241          * and a permanent copy of the "global" data
 242          */
 243         addr_sp -= GENERATED_BD_INFO_SIZE;
 244         bd = (bd_t *) addr_sp;
 245         gd->bd = bd;
 246         memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
 247         debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 248                         GENERATED_BD_INFO_SIZE, addr_sp);
 249
 250         addr_sp -= GENERATED_GBL_DATA_SIZE;
 251         id = (gd_t *) addr_sp;
 252         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 253                         GENERATED_GBL_DATA_SIZE, addr_sp);
 254
 255         /* setup stackpointer for exeptions */
 256         gd->irq_sp = addr_sp;
 257 #ifdef CONFIG_USE_IRQ
 258         addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
 259         debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
 260                 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
 261 #endif
 262         /* leave 3 words for abort-stack    */
 263         addr_sp -= 12;
 264
 265         /* 8-byte alignment for ABI compliance */
 266         addr_sp &= ~0x07;
 267         debug("New Stack Pointer is: %08lx\n", addr_sp);
 268
 269         gd->bd->bi_baudrate = gd->baudrate;
 270         /* Ram isn't board specific, so move it to board code ... */
 271         dram_init_banksize();
 272         display_dram_config();  /* and display it */
 273
 274         gd->relocaddr = addr;
 275         gd->start_addr_sp = addr_sp;
 276
 277         gd->reloc_off = addr - _TEXT_BASE;
 278
 279         debug("relocation Offset is: %08lx\n", gd->reloc_off);
 280         memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
 281
 282         relocate_code(addr_sp, id, addr);
 283
 284         /* NOTREACHED - relocate_code() does not return */
 285 }
 286
 287 /*
 288  * This is the next part if the initialization sequence: we are now
 289  * running from RAM and have a "normal" C environment, i. e. global
 290  * data can be written, BSS has been cleared, the stack size in not
 291  * that critical any more, etc.
 292  */
 293 void board_init_r(gd_t *id, ulong dest_addr)
 294 {
 295         bd_t *bd;
 296         ulong malloc_start;
 297
 298         gd = id;
 299         bd = gd->bd;
 300
 301         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 302
 303         monitor_flash_len = &_end - &_start;
 304         debug("monitor flash len: %08lX\n", monitor_flash_len);
 305
 306         board_init();   /* Setup chipselects */
 307
 308 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 309         /*
 310          * We have to relocate the command table manually
 311          */
 312         fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
 313                         ll_entry_count(cmd_tbl_t, cmd));
 314 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
 315
 316         serial_initialize();
 317
 318         debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 319
 320         /* The Malloc area is immediately below the monitor copy in DRAM */
 321         malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 322         mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
 323
 324 #ifndef CONFIG_SYS_NO_FLASH
 325         /* configure available FLASH banks */
 326         gd->bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 327         gd->bd->bi_flashsize = flash_init();
 328         gd->bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + gd->bd->bi_flashsize;
 329
 330         if (gd->bd->bi_flashsize)
 331                         display_flash_config(gd->bd->bi_flashsize);
 332 #endif /* CONFIG_SYS_NO_FLASH */
 333
 334 #if defined(CONFIG_CMD_NAND)
 335         puts("NAND:  ");
 336         nand_init();            /* go init the NAND */
 337 #endif
 338
 339 #if defined(CONFIG_CMD_IDE)
 340         puts("IDE:   ");
 341         ide_init();
 342 #endif
 343
 344 #ifdef CONFIG_GENERIC_MMC
 345         puts("MMC:   ");
 346         mmc_initialize(gd->bd);
 347 #endif
 348
 349         /* initialize environment */
 350         env_relocate();
 351
 352 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
 353         puts("PCI:   ");
 354         nds32_pci_init();
 355 #endif
 356
 357         stdio_init();   /* get the devices list going. */
 358
 359         jumptable_init();
 360
 361 #if defined(CONFIG_API)
 362         /* Initialize API */
 363         api_init();
 364 #endif
 365
 366         console_init_r();       /* fully init console as a device */
 367
 368 #if defined(CONFIG_ARCH_MISC_INIT)
 369         /* miscellaneous arch dependent initialisations */
 370         arch_misc_init();
 371 #endif
 372 #if defined(CONFIG_MISC_INIT_R)
 373         /* miscellaneous platform dependent initialisations */
 374         misc_init_r();
 375 #endif
 376
 377 #if defined(CONFIG_USE_IRQ)
 378         /* set up exceptions */
 379         interrupt_init();
 380         /* enable exceptions */
 381         enable_interrupts();
 382 #endif
 383
 384         /* Initialize from environment */
 385         load_addr = getenv_ulong("loadaddr", 16, load_addr);
 386
 387 #ifdef CONFIG_BOARD_LATE_INIT
 388         board_late_init();
 389 #endif
 390
 391 #if defined(CONFIG_CMD_NET)
 392         puts("Net:   ");
 393
 394         eth_initialize(gd->bd);
 395 #if defined(CONFIG_RESET_PHY_R)
 396         debug("Reset Ethernet PHY\n");
 397         reset_phy();
 398 #endif
 399 #endif
 400
 401         /* main_loop() can return to retry autoboot, if so just run it again. */
 402         for (;;)
 403                 main_loop();
 404
 405         /* NOTREACHED - no way out of command loop except booting */
 406 }
 407
 408 void hang(void)
 409 {
 410         puts("### ERROR ### Please RESET the board ###\n");
 411         for (;;)
 412                 ;
 413 }