1 files changed, 346 insertions, 0 deletions
diff --git a/arch/mips/lib/board.c b/arch/mips/lib/board.c
new file mode 100644
index 0000000..fac7915
--- /dev/null
+++ b/arch/mips/lib/board.c
@@ -0,0 +1,346 @@
+/*
+ * (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 <serial.h>
+#include <stdio_dev.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;
+
+ulong monitor_flash_len;
+
+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.
+ */
+const 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:  ");
+
+	gd->ram_size = initdram(board_type);
+	if (gd->ram_size > 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)
+{
+	gd->baudrate = getenv_ulong("baudrate", 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 env. variable */
+#endif
+	init_baudrate,		/* initialize 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 *s;
+
+	/* 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
+	 */
+	len = bss_end() - CONFIG_SYS_MONITOR_BASE;
+	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 */
+	bd->bi_memsize	= gd->ram_size;		/* size of DRAM in bytes */
+	bd->bi_baudrate	= gd->baudrate;		/* Console Baudrate */
+
+	memcpy(id, (void *)gd, sizeof(gd_t));
+
+	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)
+{
+#ifndef CONFIG_SYS_NO_FLASH
+	ulong size;
+#endif
+	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 = image_copy_end() - dest_addr;
+
+	serial_initialize();
+
+	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);
+
+#ifndef CONFIG_SYS_NO_FLASH
+	/* configure available FLASH banks */
+	size = flash_init();
+	display_flash_config(size);
+	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
+	bd->bi_flashsize = size;
+
+#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
+#else
+	bd->bi_flashstart = 0;
+	bd->bi_flashsize = 0;
+	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();
+
+#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 */
+	load_addr = getenv_ulong("loadaddr", 16, load_addr);
+
+#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)
+	puts("Net:   ");
+	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 */
+}