/* * (C) Copyright 2002-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Marius Groeger * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ /* * To match the U-Boot user interface on ARM platforms to the U-Boot * standard (as on PPC platforms), some messages with debug character * are removed from the default U-Boot build. * * Define DEBUG here if you want additional info as shown below * printed upon startup: * * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274 * IRQ Stack: 00ebff7c * FIQ Stack: 00ebef7c */ #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_BITBANGMII #include #endif #ifdef CONFIG_DRIVER_SMC91111 #include "../drivers/net/smc91111.h" #endif #ifdef CONFIG_DRIVER_LAN91C96 #include "../drivers/net/lan91c96.h" #endif DECLARE_GLOBAL_DATA_PTR; ulong monitor_flash_len; #ifdef CONFIG_HAS_DATAFLASH extern int AT91F_DataflashInit(void); extern void dataflash_print_info(void); #endif #ifndef CONFIG_IDENT_STRING #define CONFIG_IDENT_STRING "" #endif const char version_string[] = U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING; #ifdef CONFIG_DRIVER_RTL8019 extern void rtl8019_get_enetaddr (uchar * addr); #endif #if defined(CONFIG_HARD_I2C) || \ defined(CONFIG_SOFT_I2C) #include #endif /************************************************************************ * Coloured LED functionality ************************************************************************ * May be supplied by boards if desired */ void inline __coloured_LED_init (void) {} void coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init"))); void inline __red_LED_on (void) {} void red_LED_on (void) __attribute__((weak, alias("__red_LED_on"))); void inline __red_LED_off(void) {} void red_LED_off(void) __attribute__((weak, alias("__red_LED_off"))); void inline __green_LED_on(void) {} void green_LED_on(void) __attribute__((weak, alias("__green_LED_on"))); void inline __green_LED_off(void) {} void green_LED_off(void) __attribute__((weak, alias("__green_LED_off"))); void inline __yellow_LED_on(void) {} void yellow_LED_on(void) __attribute__((weak, alias("__yellow_LED_on"))); void inline __yellow_LED_off(void) {} void yellow_LED_off(void) __attribute__((weak, alias("__yellow_LED_off"))); void inline __blue_LED_on(void) {} void blue_LED_on(void) __attribute__((weak, alias("__blue_LED_on"))); void inline __blue_LED_off(void) {} void blue_LED_off(void) __attribute__((weak, alias("__blue_LED_off"))); /************************************************************************ * Init Utilities * ************************************************************************ * Some of this code should be moved into the core functions, * or dropped completely, * but let's get it working (again) first... */ #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE) #define CONFIG_BAUDRATE 115200 #endif static int init_baudrate (void) { char tmp[64]; /* long enough for environment variables */ int i = getenv_f("baudrate", tmp, sizeof (tmp)); gd->baudrate = (i > 0) ? (int) simple_strtoul (tmp, NULL, 10) : CONFIG_BAUDRATE; return (0); } static int display_banner (void) { printf ("\n\n%s\n\n", version_string); debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n", _TEXT_BASE, _bss_start_ofs+_TEXT_BASE, _bss_end_ofs+_TEXT_BASE); #ifdef CONFIG_MODEM_SUPPORT debug ("Modem Support enabled\n"); #endif #ifdef CONFIG_USE_IRQ debug ("IRQ Stack: %08lx\n", IRQ_STACK_START); debug ("FIQ Stack: %08lx\n", FIQ_STACK_START); #endif return (0); } /* * WARNING: this code looks "cleaner" than the PowerPC version, but * has the disadvantage that you either get nothing, or everything. * On PowerPC, you might see "DRAM: " before the system hangs - which * gives a simple yet clear indication which part of the * initialization if failing. */ static int display_dram_config (void) { int i; #ifdef DEBUG puts ("RAM Configuration:\n"); for(i=0; ibd->bi_dram[i].start); print_size (gd->bd->bi_dram[i].size, "\n"); } #else ulong size = 0; for (i=0; ibd->bi_dram[i].size; } puts("DRAM: "); print_size(size, "\n"); #endif return (0); } #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) static int init_func_i2c (void) { puts ("I2C: "); i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); puts ("ready\n"); return (0); } #endif #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI) #include static int arm_pci_init(void) { pci_init(); return 0; } #endif /* CONFIG_CMD_PCI || CONFIG_PCI */ /* * Breathe some life into the board... * * Initialize a serial port as console, and carry out some hardware * tests. * * The first part of initialization is running from Flash memory; * its main purpose is to initialize the RAM so that we * can relocate the monitor code to RAM. */ /* * All attempts to come up with a "common" initialization sequence * that works for all boards and architectures failed: some of the * requirements are just _too_ different. To get rid of the resulting * mess of board dependent #ifdef'ed code we now make the whole * initialization sequence configurable to the user. * * The requirements for any new initalization function is simple: it * receives a pointer to the "global data" structure as it's only * argument, and returns an integer return code, where 0 means * "continue" and != 0 means "fatal error, hang the system". */ typedef int (init_fnc_t) (void); int print_cpuinfo (void); void __dram_init_banksize(void) { gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; gd->bd->bi_dram[0].size = gd->ram_size; } void dram_init_banksize(void) __attribute__((weak, alias("__dram_init_banksize"))); init_fnc_t *init_sequence[] = { #if defined(CONFIG_ARCH_CPU_INIT) arch_cpu_init, /* basic arch cpu dependent setup */ #endif #if defined(CONFIG_BOARD_EARLY_INIT_F) board_early_init_f, #endif timer_init, /* initialize timer */ #ifdef CONFIG_FSL_ESDHC get_clocks, #endif env_init, /* initialize environment */ init_baudrate, /* initialze baudrate settings */ serial_init, /* serial communications setup */ console_init_f, /* stage 1 init of console */ display_banner, /* say that we are here */ #if defined(CONFIG_DISPLAY_CPUINFO) print_cpuinfo, /* display cpu info (and speed) */ #endif #if defined(CONFIG_DISPLAY_BOARDINFO) checkboard, /* display board info */ #endif #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) init_func_i2c, #endif dram_init, /* configure available RAM banks */ NULL, }; void board_init_f (ulong bootflag) { bd_t *bd; init_fnc_t **init_fnc_ptr; gd_t *id; ulong addr, addr_sp; /* Pointer is writable since we allocated a register for it */ gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07); /* compiler optimization barrier needed for GCC >= 3.4 */ __asm__ __volatile__("": : :"memory"); memset ((void*)gd, 0, sizeof (gd_t)); gd->mon_len = _bss_end_ofs; for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { if ((*init_fnc_ptr)() != 0) { hang (); } } debug ("monitor len: %08lX\n", gd->mon_len); /* * Ram is setup, size stored in gd !! */ debug ("ramsize: %08lX\n", gd->ram_size); #if defined(CONFIG_SYS_MEM_TOP_HIDE) /* * Subtract specified amount of memory to hide so that it won't * get "touched" at all by U-Boot. By fixing up gd->ram_size * the Linux kernel should now get passed the now "corrected" * memory size and won't touch it either. This should work * for arch/ppc and arch/powerpc. Only Linux board ports in * arch/powerpc with bootwrapper support, that recalculate the * memory size from the SDRAM controller setup will have to * get fixed. */ gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; #endif addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size; #ifdef CONFIG_LOGBUFFER #ifndef CONFIG_ALT_LB_ADDR /* reserve kernel log buffer */ addr -= (LOGBUFF_RESERVE); debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr); #endif #endif #ifdef CONFIG_PRAM /* * reserve protected RAM */ i = getenv_r ("pram", (char *)tmp, sizeof (tmp)); reg = (i > 0) ? simple_strtoul ((const char *)tmp, NULL, 10) : CONFIG_PRAM; addr -= (reg << 10); /* size is in kB */ debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr); #endif /* CONFIG_PRAM */ #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) /* reserve TLB table */ addr -= (4096 * 4); /* round down to next 64 kB limit */ addr &= ~(0x10000 - 1); gd->tlb_addr = addr; debug ("TLB table at: %08lx\n", addr); #endif /* round down to next 4 kB limit */ addr &= ~(4096 - 1); debug ("Top of RAM usable for U-Boot at: %08lx\n", addr); #ifdef CONFIG_LCD #ifdef CONFIG_FB_ADDR gd->fb_base = CONFIG_FB_ADDR; #else /* reserve memory for LCD display (always full pages) */ addr = lcd_setmem (addr); gd->fb_base = addr; #endif /* CONFIG_FB_ADDR */ #endif /* CONFIG_LCD */ /* * reserve memory for U-Boot code, data & bss * round down to next 4 kB limit */ addr -= gd->mon_len; addr &= ~(4096 - 1); debug ("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr); #ifndef CONFIG_PRELOADER /* * reserve memory for malloc() arena */ addr_sp = addr - TOTAL_MALLOC_LEN; debug ("Reserving %dk for malloc() at: %08lx\n", TOTAL_MALLOC_LEN >> 10, addr_sp); /* * (permanently) allocate a Board Info struct * and a permanent copy of the "global" data */ addr_sp -= sizeof (bd_t); bd = (bd_t *) addr_sp; gd->bd = bd; debug ("Reserving %zu Bytes for Board Info at: %08lx\n", sizeof (bd_t), addr_sp); addr_sp -= sizeof (gd_t); id = (gd_t *) addr_sp; debug ("Reserving %zu Bytes for Global Data at: %08lx\n", sizeof (gd_t), addr_sp); /* setup stackpointer for exeptions */ gd->irq_sp = addr_sp; #ifdef CONFIG_USE_IRQ addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ); debug ("Reserving %zu Bytes for IRQ stack at: %08lx\n", CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp); #endif /* leave 3 words for abort-stack */ addr_sp -= 12; /* 8-byte alignment for ABI compliance */ addr_sp &= ~0x07; #else addr_sp += 128; /* leave 32 words for abort-stack */ gd->irq_sp = addr_sp; #endif debug ("New Stack Pointer is: %08lx\n", addr_sp); #ifdef CONFIG_POST post_bootmode_init(); post_run (NULL, POST_ROM | post_bootmode_get(0)); #endif gd->bd->bi_baudrate = gd->baudrate; /* Ram ist board specific, so move it to board code ... */ dram_init_banksize(); display_dram_config(); /* and display it */ gd->relocaddr = addr; gd->start_addr_sp = addr_sp; gd->reloc_off = addr - _TEXT_BASE; debug ("relocation Offset is: %08lx\n", gd->reloc_off); memcpy (id, (void *)gd, sizeof (gd_t)); relocate_code (addr_sp, id, addr); /* NOTREACHED - relocate_code() does not return */ } #if !defined(CONFIG_SYS_NO_FLASH) static char *failed = "*** failed ***\n"; #endif /************************************************************************ * * This is the next part if the initialization sequence: we are now * running from RAM and have a "normal" C environment, i. e. global * data can be written, BSS has been cleared, the stack size in not * that critical any more, etc. * ************************************************************************ */ void board_init_r (gd_t *id, ulong dest_addr) { char *s; bd_t *bd; ulong malloc_start; #if !defined(CONFIG_SYS_NO_FLASH) ulong flash_size; #endif gd = id; bd = gd->bd; gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ monitor_flash_len = _end_ofs; debug ("monitor flash len: %08lX\n", monitor_flash_len); board_init(); /* Setup chipselects */ #ifdef CONFIG_SERIAL_MULTI serial_initialize(); #endif debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr); #ifdef CONFIG_LOGBUFFER logbuff_init_ptrs (); #endif #ifdef CONFIG_POST post_output_backlog (); #endif /* The Malloc area is immediately below the monitor copy in DRAM */ malloc_start = dest_addr - TOTAL_MALLOC_LEN; mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN); #if !defined(CONFIG_SYS_NO_FLASH) puts ("Flash: "); if ((flash_size = flash_init ()) > 0) { # ifdef CONFIG_SYS_FLASH_CHECKSUM print_size (flash_size, ""); /* * Compute and print flash CRC if flashchecksum is set to 'y' * * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX */ s = getenv ("flashchecksum"); if (s && (*s == 'y')) { printf (" CRC: %08X", crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size) ); } putc ('\n'); # else /* !CONFIG_SYS_FLASH_CHECKSUM */ print_size (flash_size, "\n"); # endif /* CONFIG_SYS_FLASH_CHECKSUM */ } else { puts (failed); hang (); } #endif #if defined(CONFIG_CMD_NAND) puts ("NAND: "); nand_init(); /* go init the NAND */ #endif #if defined(CONFIG_CMD_ONENAND) onenand_init(); #endif #ifdef CONFIG_GENERIC_MMC puts("MMC: "); mmc_initialize(bd); #endif #ifdef CONFIG_HAS_DATAFLASH AT91F_DataflashInit(); dataflash_print_info(); #endif /* initialize environment */ env_relocate (); #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI) arm_pci_init(); #endif /* IP Address */ gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); stdio_init (); /* get the devices list going. */ jumptable_init (); #if defined(CONFIG_API) /* Initialize API */ api_init (); #endif console_init_r (); /* fully init console as a device */ #if defined(CONFIG_ARCH_MISC_INIT) /* miscellaneous arch dependent initialisations */ arch_misc_init (); #endif #if defined(CONFIG_MISC_INIT_R) /* miscellaneous platform dependent initialisations */ misc_init_r (); #endif /* set up exceptions */ interrupt_init (); /* enable exceptions */ enable_interrupts (); /* Perform network card initialisation if necessary */ #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96) /* XXX: this needs to be moved to board init */ if (getenv ("ethaddr")) { uchar enetaddr[6]; eth_getenv_enetaddr("ethaddr", enetaddr); smc_set_mac_addr(enetaddr); } #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */ /* Initialize from environment */ if ((s = getenv ("loadaddr")) != NULL) { load_addr = simple_strtoul (s, NULL, 16); } #if defined(CONFIG_CMD_NET) if ((s = getenv ("bootfile")) != NULL) { copy_filename (BootFile, s, sizeof (BootFile)); } #endif #ifdef BOARD_LATE_INIT board_late_init (); #endif #ifdef CONFIG_BITBANGMII bb_miiphy_init(); #endif #if defined(CONFIG_CMD_NET) #if defined(CONFIG_NET_MULTI) puts ("Net: "); #endif eth_initialize(gd->bd); #if defined(CONFIG_RESET_PHY_R) debug ("Reset Ethernet PHY\n"); reset_phy(); #endif #endif #ifdef CONFIG_POST post_run (NULL, POST_RAM | post_bootmode_get(0)); #endif #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER) /* * Export available size of memory for Linux, * taking into account the protected RAM at top of memory */ { ulong pram; uchar memsz[32]; #ifdef CONFIG_PRAM char *s; if ((s = getenv ("pram")) != NULL) { pram = simple_strtoul (s, NULL, 10); } else { pram = CONFIG_PRAM; } #else pram=0; #endif #ifdef CONFIG_LOGBUFFER #ifndef CONFIG_ALT_LB_ADDR /* Also take the logbuffer into account (pram is in kB) */ pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024; #endif #endif sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram); setenv ("mem", (char *)memsz); } #endif /* main_loop() can return to retry autoboot, if so just run it again. */ for (;;) { main_loop (); } /* NOTREACHED - no way out of command loop except booting */ } void hang (void) { puts ("### ERROR ### Please RESET the board ###\n"); for (;;); }