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  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <command.h>
  14 #include <malloc.h>
  15 #include <stdio_dev.h>
  16 #include <timestamp.h>
  17 #include <version.h>
  18 #include <net.h>
  19 #include <serial.h>
  20 #include <nand.h>
  21 #include <onenand_uboot.h>
  22 #include <mmc.h>
  23 #include <asm/sections.h>
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 ulong monitor_flash_len;
  28
  29 /*
  30  * Init Utilities
  31  */
  32
  33 #if !defined(CONFIG_BAUDRATE)
  34 #define CONFIG_BAUDRATE 38400
  35 #endif
  36 static int init_baudrate(void)
  37 {
  38         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
  39         return 0;
  40 }
  41
  42 /*
  43  * WARNING: this code looks "cleaner" than the PowerPC version, but
  44  * has the disadvantage that you either get nothing, or everything.
  45  * On PowerPC, you might see "DRAM: " before the system hangs - which
  46  * gives a simple yet clear indication which part of the
  47  * initialization if failing.
  48  */
  49 static int display_dram_config(void)
  50 {
  51         int i;
  52
  53 #ifdef DEBUG
  54         puts("RAM Configuration:\n");
  55
  56         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
  57                 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
  58                 print_size(gd->bd->bi_dram[i].size, "\n");
  59         }
  60 #else
  61         ulong size = 0;
  62
  63         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
  64                 size += gd->bd->bi_dram[i].size;
  65
  66         puts("DRAM:  ");
  67         print_size(size, "\n");
  68 #endif
  69
  70         return 0;
  71 }
  72
  73 #ifndef CONFIG_SYS_NO_FLASH
  74 static void display_flash_config(ulong size)
  75 {
  76         puts("Flash: ");
  77         print_size(size, "\n");
  78 }
  79 #endif /* CONFIG_SYS_NO_FLASH */
  80
  81 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
  82 #include <pci.h>
  83 static int nds32_pci_init(void)
  84 {
  85         pci_init();
  86         return 0;
  87 }
  88 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
  89
  90 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
  91 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
  92 static int pmu_init(void)
  93 {
  94 #if defined(CONFIG_FTPMU010_POWER)
  95 #ifdef __NDS32_N1213_43U1H__    /* AG101: internal definition in toolchain */
  96         ftpmu010_sdram_clk_disable(CONFIG_SYS_FTPMU010_PDLLCR0_HCLKOUTDIS);
  97         ftpmu010_mfpsr_select_dev(FTPMU010_MFPSR_AC97CLKSEL);
  98         ftpmu010_sdramhtc_set(CONFIG_SYS_FTPMU010_SDRAMHTC);
  99 #endif  /* __NDS32_N1213_43U1H__ */
 100 #endif
 101         return 0;
 102 }
 103 #endif
 104 #endif
 105
 106 /*
 107  * Breathe some life into the board...
 108  *
 109  * Initialize a serial port as console, and carry out some hardware
 110  * tests.
 111  *
 112  * The first part of initialization is running from Flash memory;
 113  * its main purpose is to initialize the RAM so that we
 114  * can relocate the monitor code to RAM.
 115  */
 116
 117 /*
 118  * All attempts to come up with a "common" initialization sequence
 119  * that works for all boards and architectures failed: some of the
 120  * requirements are just _too_ different. To get rid of the resulting
 121  * mess of board dependent #ifdef'ed code we now make the whole
 122  * initialization sequence configurable to the user.
 123  *
 124  * The requirements for any new initalization function is simple: it
 125  * receives a pointer to the "global data" structure as it's only
 126  * argument, and returns an integer return code, where 0 means
 127  * "continue" and != 0 means "fatal error, hang the system".
 128  */
 129 typedef int (init_fnc_t)(void);
 130
 131 void __dram_init_banksize(void)
 132 {
 133         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 134         gd->bd->bi_dram[0].size =  gd->ram_size;
 135 }
 136 void dram_init_banksize(void)
 137         __attribute__((weak, alias("__dram_init_banksize")));
 138
 139 init_fnc_t *init_sequence[] = {
 140 #if defined(CONFIG_ARCH_CPU_INIT)
 141         arch_cpu_init,          /* basic arch cpu dependent setup */
 142 #endif
 143 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
 144 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
 145         pmu_init,
 146 #endif
 147 #endif
 148         board_init,             /* basic board dependent setup */
 149 #if defined(CONFIG_USE_IRQ)
 150         interrupt_init,         /* set up exceptions */
 151 #endif
 152         timer_init,             /* initialize timer */
 153         env_init,               /* initialize environment */
 154         init_baudrate,          /* initialze baudrate settings */
 155         serial_init,            /* serial communications setup */
 156         console_init_f,         /* stage 1 init of console */
 157 #if defined(CONFIG_DISPLAY_BOARDINFO)
 158         checkboard,             /* display board info */
 159 #endif
 160 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 161         init_func_i2c,
 162 #endif
 163         dram_init,              /* configure available RAM banks */
 164         display_dram_config,
 165         NULL,
 166 };
 167
 168 void board_init_f(ulong bootflag)
 169 {
 170         bd_t *bd;
 171         init_fnc_t **init_fnc_ptr;
 172         gd_t *id;
 173         ulong addr, addr_sp;
 174
 175         /* Pointer is writable since we allocated a register for it */
 176         gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
 177
 178         memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
 179
 180         gd->mon_len = (unsigned int)(&__bss_end) - (unsigned int)(&_start);
 181
 182         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 183                 if ((*init_fnc_ptr)() != 0)
 184                         hang();
 185         }
 186
 187         debug("monitor len: %08lX\n", gd->mon_len);
 188         /*
 189          * Ram is setup, size stored in gd !!
 190          */
 191         debug("ramsize: %08lX\n", gd->ram_size);
 192
 193         addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
 194
 195         /* round down to next 4 kB limit */
 196         addr &= ~(4096 - 1);
 197         debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
 198
 199 #ifdef CONFIG_LCD
 200 #ifdef CONFIG_FB_ADDR
 201         gd->fb_base = CONFIG_FB_ADDR;
 202 #else
 203         /* reserve memory for LCD display (always full pages) */
 204         addr = lcd_setmem(addr);
 205         gd->fb_base = addr;
 206 #endif /* CONFIG_FB_ADDR */
 207 #endif /* CONFIG_LCD */
 208
 209         /*
 210          * reserve memory for U-Boot code, data & bss
 211          * round down to next 4 kB limit
 212          */
 213         addr -= gd->mon_len;
 214         addr &= ~(4096 - 1);
 215
 216         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
 217
 218         /*
 219          * reserve memory for malloc() arena
 220          */
 221         addr_sp = addr - TOTAL_MALLOC_LEN;
 222         debug("Reserving %dk for malloc() at: %08lx\n",
 223                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 224         /*
 225          * (permanently) allocate a Board Info struct
 226          * and a permanent copy of the "global" data
 227          */
 228         addr_sp -= GENERATED_BD_INFO_SIZE;
 229         bd = (bd_t *) addr_sp;
 230         gd->bd = bd;
 231         memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
 232         debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 233                         GENERATED_BD_INFO_SIZE, addr_sp);
 234
 235         addr_sp -= GENERATED_GBL_DATA_SIZE;
 236         id = (gd_t *) addr_sp;
 237         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 238                         GENERATED_GBL_DATA_SIZE, addr_sp);
 239
 240         /* setup stackpointer for exeptions */
 241         gd->irq_sp = addr_sp;
 242 #ifdef CONFIG_USE_IRQ
 243         addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
 244         debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
 245                 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
 246 #endif
 247         /* leave 3 words for abort-stack    */
 248         addr_sp -= 12;
 249
 250         /* 8-byte alignment for ABI compliance */
 251         addr_sp &= ~0x07;
 252         debug("New Stack Pointer is: %08lx\n", addr_sp);
 253
 254         gd->bd->bi_baudrate = gd->baudrate;
 255         /* Ram isn't board specific, so move it to board code ... */
 256         dram_init_banksize();
 257         display_dram_config();  /* and display it */
 258
 259         gd->relocaddr = addr;
 260         gd->start_addr_sp = addr_sp;
 261
 262         gd->reloc_off = addr - _TEXT_BASE;
 263
 264         debug("relocation Offset is: %08lx\n", gd->reloc_off);
 265         memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
 266
 267         relocate_code(addr_sp, id, addr);
 268
 269         /* NOTREACHED - relocate_code() does not return */
 270 }
 271
 272 /*
 273  * This is the next part if the initialization sequence: we are now
 274  * running from RAM and have a "normal" C environment, i. e. global
 275  * data can be written, BSS has been cleared, the stack size in not
 276  * that critical any more, etc.
 277  */
 278 void board_init_r(gd_t *id, ulong dest_addr)
 279 {
 280         bd_t *bd;
 281         ulong malloc_start;
 282
 283         gd = id;
 284         bd = gd->bd;
 285
 286         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 287
 288         monitor_flash_len = (ulong)&_end - (ulong)&_start;
 289         debug("monitor flash len: %08lX\n", monitor_flash_len);
 290
 291         board_init();   /* Setup chipselects */
 292
 293 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 294         /*
 295          * We have to relocate the command table manually
 296          */
 297         fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
 298                         ll_entry_count(cmd_tbl_t, cmd));
 299 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
 300
 301         serial_initialize();
 302
 303         debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 304
 305         /* The Malloc area is immediately below the monitor copy in DRAM */
 306         malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 307         mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
 308
 309 #ifndef CONFIG_SYS_NO_FLASH
 310         /* configure available FLASH banks */
 311         gd->bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 312         gd->bd->bi_flashsize = flash_init();
 313         gd->bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + gd->bd->bi_flashsize;
 314
 315         if (gd->bd->bi_flashsize)
 316                         display_flash_config(gd->bd->bi_flashsize);
 317 #endif /* CONFIG_SYS_NO_FLASH */
 318
 319 #if defined(CONFIG_CMD_NAND)
 320         puts("NAND:  ");
 321         nand_init();            /* go init the NAND */
 322 #endif
 323
 324 #if defined(CONFIG_CMD_IDE)
 325         puts("IDE:   ");
 326         ide_init();
 327 #endif
 328
 329 #ifdef CONFIG_GENERIC_MMC
 330         puts("MMC:   ");
 331         mmc_initialize(gd->bd);
 332 #endif
 333
 334         /* initialize environment */
 335         env_relocate();
 336
 337 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
 338         puts("PCI:   ");
 339         nds32_pci_init();
 340 #endif
 341
 342         stdio_init();   /* get the devices list going. */
 343
 344         jumptable_init();
 345
 346 #if defined(CONFIG_API)
 347         /* Initialize API */
 348         api_init();
 349 #endif
 350
 351         console_init_r();       /* fully init console as a device */
 352
 353 #if defined(CONFIG_ARCH_MISC_INIT)
 354         /* miscellaneous arch dependent initialisations */
 355         arch_misc_init();
 356 #endif
 357 #if defined(CONFIG_MISC_INIT_R)
 358         /* miscellaneous platform dependent initialisations */
 359         misc_init_r();
 360 #endif
 361
 362 #if defined(CONFIG_USE_IRQ)
 363         /* set up exceptions */
 364         interrupt_init();
 365         /* enable exceptions */
 366         enable_interrupts();
 367 #endif
 368
 369         /* Initialize from environment */
 370         load_addr = getenv_ulong("loadaddr", 16, load_addr);
 371
 372 #ifdef CONFIG_BOARD_LATE_INIT
 373         board_late_init();
 374 #endif
 375
 376 #if defined(CONFIG_CMD_NET)
 377         puts("Net:   ");
 378
 379         eth_initialize(gd->bd);
 380 #if defined(CONFIG_RESET_PHY_R)
 381         debug("Reset Ethernet PHY\n");
 382         reset_phy();
 383 #endif
 384 #endif
 385
 386         /* main_loop() can return to retry autoboot, if so just run it again. */
 387         for (;;)
 388                 main_loop();
 389
 390         /* NOTREACHED - no way out of command loop except booting */
 391 }