1 files changed, 436 insertions, 0 deletions
diff --git a/arch/mips/lib/board.c b/arch/mips/lib/board.c
new file mode 100644
index 0000000..b2d113e
--- /dev/null
+++ b/arch/mips/lib/board.c
@@ -0,0 +1,436 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.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 <command.h>
+#include <malloc.h>
+#include <stdio_dev.h>
+#include <timestamp.h>
+#include <version.h>
+#include <net.h>
+#include <environment.h>
+#include <nand.h>
+#include <onenand_uboot.h>
+#include <spi.h>
+
+#ifdef CONFIG_BITBANGMII
+#include <miiphy.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
+      (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
+    defined(CONFIG_ENV_IS_IN_NVRAM)
+#define	TOTAL_MALLOC_LEN	(CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
+#else
+#define	TOTAL_MALLOC_LEN	CONFIG_SYS_MALLOC_LEN
+#endif
+
+#undef DEBUG
+
+extern int timer_init(void);
+
+extern int incaip_set_cpuclk(void);
+
+extern ulong uboot_end_data;
+extern ulong uboot_end;
+
+ulong monitor_flash_len;
+
+const char version_string[] =
+	U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
+
+static char *failed = "*** failed ***\n";
+
+/*
+ * mips_io_port_base is the begin of the address space to which x86 style
+ * I/O ports are mapped.
+ */
+unsigned long mips_io_port_base = -1;
+
+int __board_early_init_f(void)
+{
+	/*
+	 * Nothing to do in this dummy implementation
+	 */
+	return 0;
+}
+int board_early_init_f(void) __attribute__((weak, alias("__board_early_init_f")));
+
+
+static int init_func_ram (void)
+{
+#ifdef	CONFIG_BOARD_TYPES
+	int board_type = gd->board_type;
+#else
+	int board_type = 0;	/* use dummy arg */
+#endif
+	puts ("DRAM:  ");
+
+	if ((gd->ram_size = initdram (board_type)) > 0) {
+		print_size (gd->ram_size, "\n");
+		return (0);
+	}
+	puts (failed);
+	return (1);
+}
+
+static int display_banner(void)
+{
+
+	printf ("\n\n%s\n\n", version_string);
+	return (0);
+}
+
+#ifndef CONFIG_SYS_NO_FLASH
+static void display_flash_config(ulong size)
+{
+	puts ("Flash: ");
+	print_size (size, "\n");
+}
+#endif
+
+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);
+}
+
+
+/*
+ * Breath some life into the board...
+ *
+ * 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[] = {
+	board_early_init_f,
+	timer_init,
+	env_init,		/* initialize environment */
+#ifdef CONFIG_INCA_IP
+	incaip_set_cpuclk,	/* set cpu clock according to environment variable */
+#endif
+	init_baudrate,		/* initialze baudrate settings */
+	serial_init,		/* serial communications setup */
+	console_init_f,
+	display_banner,		/* say that we are here */
+	checkboard,
+	init_func_ram,
+	NULL,
+};
+
+
+void board_init_f(ulong bootflag)
+{
+	gd_t gd_data, *id;
+	bd_t *bd;
+	init_fnc_t **init_fnc_ptr;
+	ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
+	ulong *s;
+#ifdef CONFIG_PURPLE
+	void copy_code (ulong);
+#endif
+
+	/* Pointer is writable since we allocated a register for it.
+	 */
+	gd = &gd_data;
+	/* compiler optimization barrier needed for GCC >= 3.4 */
+	__asm__ __volatile__("": : :"memory");
+
+	memset ((void *)gd, 0, sizeof (gd_t));
+
+	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+		if ((*init_fnc_ptr)() != 0) {
+			hang ();
+		}
+	}
+
+	/*
+	 * Now that we have DRAM mapped and working, we can
+	 * relocate the code and continue running from DRAM.
+	 */
+	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
+
+	/* We can reserve some RAM "on top" here.
+	 */
+
+	/* round down to next 4 kB limit.
+	 */
+	addr &= ~(4096 - 1);
+	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
+
+	/* Reserve memory for U-Boot code, data & bss
+	 * round down to next 16 kB limit
+	 */
+	addr -= len;
+	addr &= ~(16 * 1024 - 1);
+
+	debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
+
+	 /* 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);
+
+	/* Reserve memory for boot params.
+	 */
+	addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
+	bd->bi_boot_params = addr_sp;
+	debug ("Reserving %dk for boot params() at: %08lx\n",
+			CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
+
+	/*
+	 * Finally, we set up a new (bigger) stack.
+	 *
+	 * Leave some safety gap for SP, force alignment on 16 byte boundary
+	 * Clear initial stack frame
+	 */
+	addr_sp -= 16;
+	addr_sp &= ~0xF;
+	s = (ulong *)addr_sp;
+	*s-- = 0;
+	*s-- = 0;
+	addr_sp = (ulong)s;
+	debug ("Stack Pointer at: %08lx\n", addr_sp);
+
+	/*
+	 * Save local variables to board info struct
+	 */
+	bd->bi_memstart	= CONFIG_SYS_SDRAM_BASE;	/* start of  DRAM memory */
+	bd->bi_memsize	= gd->ram_size;		/* size  of  DRAM memory in bytes */
+	bd->bi_baudrate	= gd->baudrate;		/* Console Baudrate */
+
+	memcpy (id, (void *)gd, sizeof (gd_t));
+
+	/* On the purple board we copy the code in a special way
+	 * in order to solve flash problems
+	 */
+#ifdef CONFIG_PURPLE
+	copy_code(addr);
+#endif
+
+	relocate_code (addr_sp, id, addr);
+
+	/* NOTREACHED - relocate_code() does not return */
+}
+/************************************************************************
+ *
+ * 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)
+{
+	cmd_tbl_t *cmdtp;
+#ifndef CONFIG_SYS_NO_FLASH
+	ulong size;
+#endif
+	extern void malloc_bin_reloc (void);
+#ifndef CONFIG_ENV_IS_NOWHERE
+	extern char * env_name_spec;
+#endif
+	char *s;
+	bd_t *bd;
+
+	gd = id;
+	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
+
+	debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+
+	gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
+
+	monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
+
+	/*
+	 * 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 0
+		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
+	}
+	/* there are some other pointer constants we must deal with */
+#ifndef CONFIG_ENV_IS_NOWHERE
+	env_name_spec += gd->reloc_off;
+#endif
+
+	bd = gd->bd;
+
+	/* The Malloc area is immediately below the monitor copy in DRAM */
+	mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
+			TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
+	malloc_bin_reloc();
+
+#ifndef CONFIG_SYS_NO_FLASH
+	/* configure available FLASH banks */
+	size = flash_init();
+	display_flash_config (size);
+	bd->bi_flashsize = size;
+#endif
+
+	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
+#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
+	bd->bi_flashoffset = monitor_flash_len;	/* reserved area for U-Boot */
+#else
+	bd->bi_flashoffset = 0;
+#endif
+
+#ifdef CONFIG_CMD_NAND
+	puts ("NAND:  ");
+	nand_init ();		/* go init the NAND */
+#endif
+
+#if defined(CONFIG_CMD_ONENAND)
+	onenand_init();
+#endif
+
+	/* relocate environment function pointers etc. */
+	env_relocate();
+
+	/* IP Address */
+	bd->bi_ip_addr = getenv_IPaddr("ipaddr");
+
+#if defined(CONFIG_PCI)
+	/*
+	 * Do pci configuration
+	 */
+	pci_init();
+#endif
+
+/** leave this here (after malloc(), environment and PCI are working) **/
+	/* Initialize stdio devices */
+	stdio_init ();
+
+	jumptable_init ();
+
+	/* Initialize the console (after the relocation and devices init) */
+	console_init_r ();
+/** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
+
+	/* 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 CONFIG_CMD_SPI
+	puts ("SPI:   ");
+	spi_init ();		/* go init the SPI */
+	puts ("ready\n");
+#endif
+
+#if defined(CONFIG_MISC_INIT_R)
+	/* miscellaneous platform dependent initialisations */
+	misc_init_r ();
+#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);
+#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 (;;);
+}