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