1 files changed, 429 insertions, 0 deletions
diff --git a/arch/i386/lib/board.c b/arch/i386/lib/board.c
new file mode 100644
index 0000000..f3b6348
--- /dev/null
+++ b/arch/i386/lib/board.c
@@ -0,0 +1,429 @@
+/*
+ * (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);
+}