+++ /dev/null
-/*
- * (C) Copyright 2002
- * Daniel Engstr�m, Omicron Ceti AB, daniel@omicron.se
- *
- * (C) Copyright 2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * 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 <watchdog.h>
-#include <command.h>
-#include <stdio_dev.h>
-#include <timestamp.h>
-#include <version.h>
-#include <malloc.h>
-#include <net.h>
-#include <ide.h>
-#include <asm/u-boot-i386.h>
-#include <elf.h>
-
-#ifdef CONFIG_BITBANGMII
-#include <miiphy.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* Exports from the Linker Script */
-extern ulong _i386boot_text_start;
-extern ulong _i386boot_rel_dyn_start;
-extern ulong _i386boot_rel_dyn_end;
-extern ulong _i386boot_bss_start;
-extern ulong _i386boot_bss_size;
-void ram_bootstrap (void *);
-const char version_string[] =
- U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
-
-/************************************************************************
- * Init Utilities *
- ************************************************************************
- * Some of this code should be moved into the core functions,
- * or dropped completely,
- * 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, 64);
-
- 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);
-/*
- printf ("U-Boot code: %08lX -> %08lX data: %08lX -> %08lX\n"
- " BSS: %08lX -> %08lX stack: %08lX -> %08lX\n",
- i386boot_start, i386boot_romdata_start-1,
- i386boot_romdata_dest, i386boot_romdata_dest+i386boot_romdata_size-1,
- i386boot_bss_start, i386boot_bss_start+i386boot_bss_size-1,
- i386boot_bss_start+i386boot_bss_size,
- i386boot_bss_start+i386boot_bss_size+CONFIG_SYS_STACK_SIZE-1);
-
-*/
-
- 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;
-
- puts ("DRAM Configuration:\n");
-
- for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
- printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
- print_size (gd->bd->bi_dram[i].size, "\n");
- }
-
- return (0);
-}
-
-static void display_flash_config (ulong size)
-{
- puts ("Flash: ");
- print_size (size, "\n");
-}
-
-/*
- * Breath some life into the board...
- *
- * Initialize an SMC for serial comms, 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 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);
-
-init_fnc_t *init_sequence[] = {
- serial_init,
- cpu_init_r, /* basic cpu dependent setup */
- board_early_init_r, /* basic board dependent setup */
- dram_init, /* configure available RAM banks */
- interrupt_init, /* set up exceptions */
- timer_init,
- env_init, /* initialize environment */
- init_baudrate, /* initialze baudrate settings */
- serial_init, /* serial communications setup */
- display_banner,
- display_dram_config,
-
- NULL,
-};
-
-gd_t *gd;
-
-/*
- * Load U-Boot into RAM, initialize BSS, perform relocation adjustments
- */
-void board_init_f (ulong stack_limit)
-{
- void *text_start = &_i386boot_text_start;
- void *u_boot_cmd_end = &__u_boot_cmd_end;
- Elf32_Rel *rel_dyn_start = (Elf32_Rel *)&_i386boot_rel_dyn_start;
- Elf32_Rel *rel_dyn_end = (Elf32_Rel *)&_i386boot_rel_dyn_end;
- void *bss_start = &_i386boot_bss_start;
- void *bss_size = &_i386boot_bss_size;
-
- size_t uboot_size;
- void *ram_start;
- ulong rel_offset;
- Elf32_Rel *re;
-
- void (*start_func)(void *);
-
- /* compiler optimization barrier needed for GCC >= 3.4 */
- __asm__ __volatile__("": : :"memory");
-
- uboot_size = (size_t)u_boot_cmd_end - (size_t)text_start;
- ram_start = (void *)stack_limit - (uboot_size + (ulong)bss_size);
- rel_offset = text_start - ram_start;
- start_func = ram_bootstrap - rel_offset;
-
- /* First stage CPU initialization */
- if (cpu_init_f() != 0)
- hang();
-
- /* First stage Board initialization */
- if (board_early_init_f() != 0)
- hang();
-
- /* Copy U-Boot into RAM */
- memcpy(ram_start, text_start, (size_t)uboot_size);
-
- /* Clear BSS */
- memset(bss_start - rel_offset, 0, (size_t)bss_size);
-
- /* Perform relocation adjustments */
- for (re = rel_dyn_start; re < rel_dyn_end; re++)
- {
- if (re->r_offset >= TEXT_BASE)
- if (*(ulong *)re->r_offset >= TEXT_BASE)
- *(ulong *)(re->r_offset - rel_offset) -= (Elf32_Addr)rel_offset;
- }
-
- start_func(ram_start);
-
- /* NOTREACHED - relocate_code() does not return */
- while(1);
-}
-
-/*
- * All attempts to jump straight from board_init_f() to board_init_r()
- * have failed, hence this special 'bootstrap' function.
- */
-void ram_bootstrap (void *ram_start)
-{
- static gd_t gd_data;
-
- /* compiler optimization barrier needed for GCC >= 3.4 */
- __asm__ __volatile__("": : :"memory");
-
- board_init_r(&gd_data, (ulong)ram_start);
-}
-
-void board_init_r(gd_t *id, ulong ram_start)
-{
- char *s;
- int i;
- ulong size;
- static bd_t bd_data;
- init_fnc_t **init_fnc_ptr;
-
- show_boot_progress(0x21);
-
- gd = id;
- /* compiler optimization barrier needed for GCC >= 3.4 */
- __asm__ __volatile__("": : :"memory");
-
- memset (gd, 0, sizeof (gd_t));
- gd->bd = &bd_data;
- memset (gd->bd, 0, sizeof (bd_t));
- show_boot_progress(0x22);
-
- gd->baudrate = CONFIG_BAUDRATE;
-
- gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
-
- mem_malloc_init((((ulong)ram_start - CONFIG_SYS_MALLOC_LEN)+3)&~3,
- CONFIG_SYS_MALLOC_LEN);
-
- for (init_fnc_ptr = init_sequence, i=0; *init_fnc_ptr; ++init_fnc_ptr, i++) {
- show_boot_progress(0xa130|i);
-
- if ((*init_fnc_ptr)() != 0) {
- hang ();
- }
- }
- show_boot_progress(0x23);
-
- /* configure available FLASH banks */
- size = flash_init();
- display_flash_config(size);
- show_boot_progress(0x24);
-
- show_boot_progress(0x25);
-
- /* initialize environment */
- env_relocate ();
- show_boot_progress(0x26);
-
-
- /* IP Address */
- bd_data.bi_ip_addr = getenv_IPaddr ("ipaddr");
-
-#if defined(CONFIG_PCI)
- /*
- * Do pci configuration
- */
- pci_init();
-#endif
-
- show_boot_progress(0x27);
-
-
- stdio_init ();
-
- jumptable_init ();
-
- /* Initialize the console (after the relocation and devices init) */
- console_init_r();
-
-#ifdef CONFIG_MISC_INIT_R
- /* miscellaneous platform dependent initialisations */
- misc_init_r();
-#endif
-
-#if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
- WATCHDOG_RESET();
- puts ("PCMCIA:");
- pcmcia_init();
-#endif
-
-#if defined(CONFIG_CMD_KGDB)
- WATCHDOG_RESET();
- puts("KGDB: ");
- kgdb_init();
-#endif
-
- /* enable exceptions */
- enable_interrupts();
- show_boot_progress(0x28);
-
- /* Must happen after interrupts are initialized since
- * an irq handler gets installed
- */
-#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
-
- WATCHDOG_RESET();
-
-#if defined(CONFIG_CMD_IDE)
- WATCHDOG_RESET();
- puts("IDE: ");
- ide_init();
-#endif
-
-#if defined(CONFIG_CMD_SCSI)
- WATCHDOG_RESET();
- puts("SCSI: ");
- scsi_init();
-#endif
-
-#if defined(CONFIG_CMD_DOC)
- WATCHDOG_RESET();
- puts("DOC: ");
- doc_init();
-#endif
-
-#ifdef CONFIG_BITBANGMII
- bb_miiphy_init();
-#endif
-#if defined(CONFIG_CMD_NET)
-#if defined(CONFIG_NET_MULTI)
- WATCHDOG_RESET();
- puts("Net: ");
-#endif
- eth_initialize(gd->bd);
-#endif
-
-#if ( defined(CONFIG_CMD_NET)) && (0)
- WATCHDOG_RESET();
-# ifdef DEBUG
- puts ("Reset Ethernet PHY\n");
-# endif
- reset_phy();
-#endif
-
-#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_POST
- post_run (NULL, POST_RAM | post_bootmode_get(0));
-#endif
-
-
- show_boot_progress(0x29);
-
- /* 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 (;;);
-}
-
-unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
-{
- /*
- * TODO: Test this function - changed to fix compiler error.
- * Original code was:
- * return (entry >> 1) (argc, argv);
- * with a comment about Nios function pointers are address >> 1
- */
- return (entry) (argc, argv);
-}
projects / u-boot / blobdiff