arch/avr32/lib/board.c

   1 /*
   2  * Copyright (C) 2004-2006 Atmel Corporation
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7 #include <command.h>
   8 #include <malloc.h>
   9 #include <stdio_dev.h>
  10 #include <version.h>
  11 #include <net.h>
  12 #include <atmel_mci.h>
  13
  14 #ifdef CONFIG_BITBANGMII
  15 #include <miiphy.h>
  16 #endif
  17
  18 #include <asm/sections.h>
  19 #include <asm/arch/mmu.h>
  20 #include <asm/arch/hardware.h>
  21
  22 #ifndef CONFIG_IDENT_STRING
  23 #define CONFIG_IDENT_STRING ""
  24 #endif
  25
  26 #ifdef CONFIG_GENERIC_ATMEL_MCI
  27 #include <mmc.h>
  28 #endif
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 unsigned long monitor_flash_len;
  32
  33 /* Weak aliases for optional board functions */
  34 static int __do_nothing(void)
  35 {
  36         return 0;
  37 }
  38 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
  39 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
  40
  41 /* provide cpu_mmc_init, to overwrite provide board_mmc_init */
  42 int cpu_mmc_init(bd_t *bd)
  43 {
  44         /* This calls the atmel_mci_init in gen_atmel_mci.c */
  45         return atmel_mci_init((void *)ATMEL_BASE_MMCI);
  46 }
  47
  48 static int init_baudrate(void)
  49 {
  50         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
  51         return 0;
  52 }
  53
  54 static int display_banner (void)
  55 {
  56         printf ("\n\n%s\n\n", version_string);
  57         printf ("U-Boot code: %08lx -> %08lx  data: %08lx -> %08lx\n",
  58                 (unsigned long)_text, (unsigned long)_etext,
  59                 (unsigned long)_data, (unsigned long)(&__bss_end));
  60         return 0;
  61 }
  62
  63 static int display_dram_config (void)
  64 {
  65         int i;
  66
  67         puts ("DRAM Configuration:\n");
  68
  69         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
  70                 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
  71                 print_size (gd->bd->bi_dram[i].size, "\n");
  72         }
  73
  74         return 0;
  75 }
  76
  77 static void display_flash_config (void)
  78 {
  79         puts ("Flash: ");
  80         print_size(gd->bd->bi_flashsize, " ");
  81         printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
  82 }
  83
  84 void board_init_f(ulong board_type)
  85 {
  86         gd_t gd_data;
  87         gd_t *new_gd;
  88         bd_t *bd;
  89         unsigned long *new_sp;
  90         unsigned long monitor_len;
  91         unsigned long monitor_addr;
  92         unsigned long addr;
  93         long sdram_size;
  94
  95         /* Initialize the global data pointer */
  96         memset(&gd_data, 0, sizeof(gd_data));
  97         gd = &gd_data;
  98
  99         /* Perform initialization sequence */
 100         board_early_init_f();
 101         arch_cpu_init();
 102         board_postclk_init();
 103         env_init();
 104         init_baudrate();
 105         serial_init();
 106         console_init_f();
 107         display_banner();
 108         sdram_size = initdram(board_type);
 109
 110         /* If we have no SDRAM, we can't go on */
 111         if (sdram_size <= 0)
 112                 panic("No working SDRAM available\n");
 113
 114         /*
 115          * Now that we have DRAM mapped and working, we can
 116          * relocate the code and continue running from DRAM.
 117          *
 118          * Reserve memory at end of RAM for (top down in that order):
 119          *  - u-boot image
 120          *  - heap for malloc()
 121          *  - board info struct
 122          *  - global data struct
 123          *  - stack
 124          */
 125         addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
 126         monitor_len = (char *)(&__bss_end) - _text;
 127
 128         /*
 129          * Reserve memory for u-boot code, data and bss.
 130          * Round down to next 4 kB limit.
 131          */
 132         addr -= monitor_len;
 133         addr &= ~(4096UL - 1);
 134         monitor_addr = addr;
 135
 136         /* Reserve memory for malloc() */
 137         addr -= CONFIG_SYS_MALLOC_LEN;
 138
 139 #ifdef CONFIG_LCD
 140 #ifdef CONFIG_FB_ADDR
 141         printf("LCD: Frame buffer allocated at preset 0x%08x\n",
 142                CONFIG_FB_ADDR);
 143         gd->fb_base = CONFIG_FB_ADDR;
 144 #else
 145         addr = lcd_setmem(addr);
 146         printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
 147         gd->fb_base = addr;
 148 #endif /* CONFIG_FB_ADDR */
 149 #endif /* CONFIG_LCD */
 150
 151         /* Allocate a Board Info struct on a word boundary */
 152         addr -= sizeof(bd_t);
 153         addr &= ~3UL;
 154         gd->bd = bd = (bd_t *)addr;
 155
 156         /* Allocate a new global data copy on a 8-byte boundary. */
 157         addr -= sizeof(gd_t);
 158         addr &= ~7UL;
 159         new_gd = (gd_t *)addr;
 160
 161         /* And finally, a new, bigger stack. */
 162         new_sp = (unsigned long *)addr;
 163         gd->arch.stack_end = addr;
 164         *(--new_sp) = 0;
 165         *(--new_sp) = 0;
 166
 167         /*
 168          * Initialize the board information struct with the
 169          * information we have.
 170          */
 171         bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 172         bd->bi_dram[0].size = sdram_size;
 173
 174         memcpy(new_gd, gd, sizeof(gd_t));
 175
 176         relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
 177 }
 178
 179 void board_init_r(gd_t *new_gd, ulong dest_addr)
 180 {
 181 #ifndef CONFIG_ENV_IS_NOWHERE
 182         extern char * env_name_spec;
 183 #endif
 184         bd_t *bd;
 185
 186         gd = new_gd;
 187         bd = gd->bd;
 188
 189         gd->flags |= GD_FLG_RELOC;
 190         gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
 191
 192         /* Enable the MMU so that we can keep u-boot simple */
 193         mmu_init_r(dest_addr);
 194
 195         board_early_init_r();
 196
 197         monitor_flash_len = _edata - _text;
 198
 199 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 200         /*
 201          * We have to relocate the command table manually
 202          */
 203         fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
 204                         ll_entry_count(cmd_tbl_t, cmd));
 205 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
 206
 207         /* there are some other pointer constants we must deal with */
 208 #ifndef CONFIG_ENV_IS_NOWHERE
 209         env_name_spec += gd->reloc_off;
 210 #endif
 211
 212         timer_init();
 213
 214         /* The malloc area is right below the monitor image in RAM */
 215         mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
 216                         CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
 217
 218         enable_interrupts();
 219
 220         bd->bi_flashstart = 0;
 221         bd->bi_flashsize = 0;
 222         bd->bi_flashoffset = 0;
 223
 224 #ifndef CONFIG_SYS_NO_FLASH
 225         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 226         bd->bi_flashsize = flash_init();
 227         bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
 228
 229         if (bd->bi_flashsize)
 230                 display_flash_config();
 231 #endif
 232
 233         if (bd->bi_dram[0].size)
 234                 display_dram_config();
 235
 236         gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
 237         if (!gd->bd->bi_boot_params)
 238                 puts("WARNING: Cannot allocate space for boot parameters\n");
 239
 240         /* initialize environment */
 241         env_relocate();
 242
 243         stdio_init();
 244         jumptable_init();
 245         console_init_r();
 246
 247         /* Initialize from environment */
 248         load_addr = getenv_ulong("loadaddr", 16, load_addr);
 249
 250 #ifdef CONFIG_BITBANGMII
 251         bb_miiphy_init();
 252 #endif
 253 #if defined(CONFIG_CMD_NET)
 254         puts("Net:   ");
 255         eth_initialize(gd->bd);
 256 #endif
 257
 258 #ifdef CONFIG_GENERIC_ATMEL_MCI
 259         mmc_initialize(gd->bd);
 260 #endif
 261         for (;;) {
 262                 main_loop();
 263         }
 264 }