/* SPARC Board initialization * * (C) Copyright 2000-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2007 * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. * * 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 */ #include <common.h> #include <command.h> #include <malloc.h> #include <devices.h> #include <config.h> #if defined(CONFIG_CMD_IDE) #include <ide.h> #endif #ifdef CONFIG_STATUS_LED #include <status_led.h> #endif #include <net.h> #include <serial.h> #include <version.h> #if defined(CONFIG_POST) #include <post.h> #endif #ifdef CONFIG_PS2KBD #include <keyboard.h> #endif #ifdef CONFIG_CMD_AMBAPP #include <ambapp.h> #endif DECLARE_GLOBAL_DATA_PTR; /* Debug options #define DEBUG_INIT_SEQUENCE #define DEBUG_MEM_LAYOUT #define DEBUG_COMMANDS */ extern void timer_interrupt_init(void); extern void malloc_bin_reloc(void); extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]); extern int prom_init(void); #if defined(CONFIG__CMD_DOC) void doc_init(void); #endif #if !defined(CONFIG_SYS_NO_FLASH) static char *failed = "*** failed ***\n"; #endif #include <environment.h> ulong monitor_flash_len; /* * Begin and End of memory area for malloc(), and current "brk" */ static ulong mem_malloc_start = 0; static ulong mem_malloc_end = 0; static ulong mem_malloc_brk = 0; /************************************************************************ * Utilities * ************************************************************************ */ /* * The Malloc area is immediately below the monitor copy in RAM */ static void mem_malloc_init(void) { mem_malloc_start = CONFIG_SYS_MALLOC_BASE; mem_malloc_end = CONFIG_SYS_MALLOC_END; mem_malloc_brk = mem_malloc_start; memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start); } void *sbrk(ptrdiff_t increment) { ulong old = mem_malloc_brk; ulong new = old + increment; if ((new < mem_malloc_start) || (new > mem_malloc_end)) { return (NULL); } mem_malloc_brk = new; return ((void *)old); } /***********************************************************************/ /************************************************************************ * Init Utilities * ************************************************************************ * Some of this code should be moved into the core functions, * but let's get it working (again) first... */ static int init_baudrate(void) { char tmp[64]; /* long enough for environment variables */ int i = getenv_r("baudrate", tmp, sizeof(tmp)); gd->baudrate = (i > 0) ? (int)simple_strtoul(tmp, NULL, 10) : CONFIG_BAUDRATE; return (0); } /***********************************************************************/ /* * 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 dependend #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); #define WATCHDOG_RESET(x) /************************************************************************ * Initialization sequence * ************************************************************************ */ init_fnc_t *init_sequence[] = { #if defined(CONFIG_BOARD_EARLY_INIT_F) board_early_init_f, #endif serial_init, init_timebase, #if defined(CONFIG_CMD_AMBAPP) ambapp_init_reloc, #endif env_init, init_baudrate, console_init_f, display_options, checkcpu, checkboard, #if defined(CONFIG_MISC_INIT_F) misc_init_f, #endif #ifdef CONFIG_POST post_init_f, #endif NULL, /* Terminate this list, * beware: this list will be relocated * which means that NULL will become * NULL+RELOC_OFFSET. We simply make * NULL be -RELOC_OFFSET instead. */ }; /************************************************************************ * * This is the SPARC board initialization routine, running from RAM. * ************************************************************************ */ #ifdef DEBUG_INIT_SEQUENCE char *str_init_seq = "INIT_SEQ 00\n"; char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n"; #endif void board_init_f(ulong bootflag) { cmd_tbl_t *cmdtp; bd_t *bd; unsigned char *s; init_fnc_t **init_fnc_ptr; int j; int i; char *e; #ifndef CONFIG_SYS_NO_FLASH ulong flash_size; #endif gd = (gd_t *) (CONFIG_SYS_GBL_DATA_OFFSET); /* Clear initial global data */ memset((void *)gd, 0, sizeof(gd_t)); gd->bd = (bd_t *) (gd + 1); /* At end of global data */ gd->baudrate = CONFIG_BAUDRATE; gd->cpu_clk = CONFIG_SYS_CLK_FREQ; bd = gd->bd; bd->bi_memstart = CONFIG_SYS_RAM_BASE; bd->bi_memsize = CONFIG_SYS_RAM_SIZE; bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; #endif bd->bi_baudrate = CONFIG_BAUDRATE; bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ gd->reloc_off = CONFIG_SYS_RELOC_MONITOR_BASE - CONFIG_SYS_MONITOR_BASE; for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr; ++init_fnc_ptr, j++) { #ifdef DEBUG_INIT_SEQUENCE if (j > 9) str_init_seq[9] = '0' + (j / 10); str_init_seq[10] = '0' + (j - (j / 10) * 10); serial_puts(str_init_seq); #endif if ((*init_fnc_ptr + gd->reloc_off) () != 0) { hang(); } } #ifdef DEBUG_INIT_SEQUENCE serial_puts(str_init_seq_done); #endif /* * Now that we have DRAM mapped and working, we can * relocate the code and continue running from DRAM. * * Reserve memory at end of RAM for (top down in that order): * - kernel log buffer * - protected RAM * - LCD framebuffer * - monitor code * - board info struct */ #ifdef DEBUG_MEM_LAYOUT printf("CONFIG_SYS_MONITOR_BASE: 0x%lx\n", CONFIG_SYS_MONITOR_BASE); printf("CONFIG_ENV_ADDR: 0x%lx\n", CONFIG_ENV_ADDR); printf("CONFIG_SYS_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CONFIG_SYS_RELOC_MONITOR_BASE, CONFIG_SYS_MONITOR_LEN); printf("CONFIG_SYS_MALLOC_BASE: 0x%lx (%d)\n", CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); printf("CONFIG_SYS_INIT_SP_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_INIT_SP_OFFSET, CONFIG_SYS_STACK_SIZE); printf("CONFIG_SYS_PROM_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_PROM_OFFSET, CONFIG_SYS_PROM_SIZE); printf("CONFIG_SYS_GBL_DATA_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_GBL_DATA_OFFSET, CONFIG_SYS_GBL_DATA_SIZE); #endif #ifdef CONFIG_POST post_bootmode_init(); post_run(NULL, POST_ROM | post_bootmode_get(0)); #endif /* * We have to relocate the command table manually */ for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { ulong addr; addr = (ulong) (cmdtp->cmd) + gd->reloc_off; #if DEBUG_COMMANDS printf("Command \"%s\": 0x%08lx => 0x%08lx\n", cmdtp->name, (ulong) (cmdtp->cmd), addr); #endif cmdtp->cmd = (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr; addr = (ulong) (cmdtp->name) + gd->reloc_off; cmdtp->name = (char *)addr; if (cmdtp->usage) { addr = (ulong) (cmdtp->usage) + gd->reloc_off; cmdtp->usage = (char *)addr; } #ifdef CONFIG_SYS_LONGHELP if (cmdtp->help) { addr = (ulong) (cmdtp->help) + gd->reloc_off; cmdtp->help = (char *)addr; } #endif } #if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP) puts("AMBA:\n"); do_ambapp_print(NULL, 0, 0, NULL); #endif /* initialize higher level parts of CPU like time base and timers */ cpu_init_r(); /* start timer */ timer_interrupt_init(); /* * Enable Interrupts before any calls to udelay, * the flash driver may use udelay resulting in * a hang if not timer0 IRQ is enabled. */ interrupt_init(); /* initialize malloc() area */ mem_malloc_init(); malloc_bin_reloc(); #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: %08lX", 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(); } bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */ bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */ #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */ #else bd->bi_flashoffset = 0; #endif #else /* CONFIG_SYS_NO_FLASH */ bd->bi_flashsize = 0; bd->bi_flashstart = 0; bd->bi_flashoffset = 0; #endif /* !CONFIG_SYS_NO_FLASH */ #ifdef CONFIG_SPI # if !defined(CONFIG_ENV_IS_IN_EEPROM) spi_init_f(); # endif spi_init_r(); #endif /* relocate environment function pointers etc. */ env_relocate(); #if defined(CONFIG_BOARD_LATE_INIT) board_late_init(); #endif #ifdef CONFIG_ID_EEPROM mac_read_from_eeprom(); #endif /* IP Address */ bd->bi_ip_addr = getenv_IPaddr("ipaddr"); #if defined(CONFIG_PCI) /* * Do pci configuration */ pci_init(); #endif /* Initialize devices */ devices_init(); /* Initialize the jump table for applications */ jumptable_init(); /* Initialize the console (after the relocation and devices init) */ console_init_r(); #ifdef CONFIG_SERIAL_SOFTWARE_FIFO serial_buffered_init(); #endif #ifdef CONFIG_STATUS_LED status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); #endif udelay(20); set_timer(0); /* 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 /* CONFIG_CMD_NET */ WATCHDOG_RESET(); #if defined(CONFIG_CMD_DOC) WATCHDOG_RESET(); puts("DOC: "); doc_init(); #endif #if defined(CONFIG_CMD_NET) #if defined(CONFIG_NET_MULTI) WATCHDOG_RESET(); puts("Net: "); #endif eth_initialize(bd); #endif #if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R) WATCHDOG_RESET(); debug("Reset Ethernet PHY\n"); reset_phy(); #endif #ifdef CONFIG_POST post_run(NULL, POST_RAM | post_bootmode_get(0)); #endif #if defined(CONFIG_CMD_IDE) WATCHDOG_RESET(); puts("IDE: "); ide_init(); #endif /* CONFIG_CMD_IDE */ #ifdef CONFIG_LAST_STAGE_INIT WATCHDOG_RESET(); /* * Some parts can be only initialized if all others (like * Interrupts) are up and running (i.e. the PC-style ISA * keyboard). */ last_stage_init(); #endif #ifdef CONFIG_PS2KBD puts("PS/2: "); kbd_init(); #endif prom_init(); /* main_loop */ for (;;) { WATCHDOG_RESET(); main_loop(); } } void hang(void) { puts("### ERROR ### Please RESET the board ###\n"); #ifdef CONFIG_SHOW_BOOT_PROGRESS show_boot_progress(-30); #endif for (;;) ; } /************************************************************************/