1 files changed, 282 insertions, 0 deletions
diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c
new file mode 100644
index 0000000..7bf63eb
--- /dev/null
+++ b/lib_blackfin/board.c
@@ -0,0 +1,282 @@
+/*
+ * U-boot - board.c First C file to be called contains init routines
+ *
+ * Copyright (c) 2005 blackfin.uclinux.org
+ *
+ * (C) Copyright 2000-2004
+ * 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 <devices.h>
+#include <version.h>
+#include <net.h>
+#include <environment.h>
+#include "blackfin_board.h"
+#include "../drivers/smc91111.h"
+
+extern flash_info_t flash_info[];
+
+
+static void mem_malloc_init(void)
+{
+	mem_malloc_start = CFG_MALLOC_BASE;
+	mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN);
+	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);
+}
+
+static int display_banner(void)
+{
+	sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING);
+	printf("%s\n", version_string);
+	return (0);
+}
+
+static void display_flash_config(ulong size)
+{
+	puts("FLASH:  ");
+	print_size(size, "\n");
+	return;
+}
+
+static int init_baudrate(void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	uchar tmp[64];
+	int i = getenv_r("baudrate", tmp, sizeof(tmp));
+	gd->bd->bi_baudrate = gd->baudrate = (i > 0)
+		? (int) simple_strtoul(tmp, NULL, 10)
+		: CONFIG_BAUDRATE;
+	return (0);
+}
+
+#ifdef DEBUG
+static void display_global_data(void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	bd_t *bd;
+	bd = gd->bd;
+	printf("--flags:%x\n", gd->flags);
+	printf("--board_type:%x\n", gd->board_type);
+	printf("--baudrate:%x\n", gd->baudrate);
+	printf("--have_console:%x\n", gd->have_console);
+	printf("--ram_size:%x\n", gd->ram_size);
+	printf("--reloc_off:%x\n", gd->reloc_off);
+	printf("--env_addr:%x\n", gd->env_addr);
+	printf("--env_valid:%x\n", gd->env_valid);
+	printf("--bd:%x %x\n", gd->bd, bd);
+	printf("---bi_baudrate:%x\n", bd->bi_baudrate);
+	printf("---bi_ip_addr:%x\n", bd->bi_ip_addr);
+	printf("---bi_enetaddr:%x %x %x %x %x %x\n",
+				bd->bi_enetaddr[0],
+				bd->bi_enetaddr[1],
+				bd->bi_enetaddr[2],
+				bd->bi_enetaddr[3],
+				bd->bi_enetaddr[4],
+				bd->bi_enetaddr[5]);
+	printf("---bi_arch_number:%x\n", bd->bi_arch_number);
+	printf("---bi_boot_params:%x\n", bd->bi_boot_params);
+	printf("---bi_memstart:%x\n", bd->bi_memstart);
+	printf("---bi_memsize:%x\n", bd->bi_memsize);
+	printf("---bi_flashstart:%x\n", bd->bi_flashstart);
+	printf("---bi_flashsize:%x\n", bd->bi_flashsize);
+	printf("---bi_flashoffset:%x\n", bd->bi_flashoffset);
+	printf("--jt:%x *:%x\n", gd->jt, *(gd->jt));
+}
+#endif
+
+/*
+ * 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".
+ */
+
+void board_init_f(ulong bootflag)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	ulong addr;
+	bd_t *bd;
+
+	gd = (gd_t *) (CFG_GBL_DATA_ADDR);
+	memset((void *) gd, 0, sizeof(gd_t));
+
+	/* Board data initialization */
+	addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));
+
+	/* Align to 4 byte boundary */
+        addr &= ~(4 - 1);
+	bd = (bd_t*)addr;
+	gd->bd = bd;
+	memset((void *) bd, 0, sizeof(bd_t));
+
+	/* Initialize */
+	init_IRQ();
+	env_init();		/* initialize environment */
+	init_baudrate();	/* initialze baudrate settings */
+	serial_init();		/* serial communications setup */
+	console_init_f();
+	display_banner();	/* say that we are here */
+	checkboard();
+#if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE)
+	rtc_init();
+#endif
+	timer_init();
+	printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \
+	CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000);
+	printf("SDRAM: ");
+	print_size(initdram(0), "\n");
+	board_init_r((gd_t *) gd, 0x20000010);
+}
+
+void board_init_r(gd_t * id, ulong dest_addr)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	ulong size;
+	extern void malloc_bin_reloc(void);
+	char *s, *e;
+	bd_t *bd;
+	int i;
+	gd = id;
+	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
+	bd = gd->bd;
+
+#if	CONFIG_STAMP
+	/* There are some other pointer constants we must deal with */
+	/* configure available FLASH banks */
+	size = flash_init();
+	display_flash_config(size);
+	flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + 0x1ffff, &flash_info[0]);
+	bd->bi_flashstart = CFG_FLASH_BASE;
+	bd->bi_flashsize = size;
+	bd->bi_flashoffset = 0;
+#else
+	bd->bi_flashstart = 0;
+	bd->bi_flashsize = 0;
+	bd->bi_flashoffset = 0;
+#endif
+	/* initialize malloc() area */
+	mem_malloc_init();
+	malloc_bin_reloc();
+
+	/* relocate environment function pointers etc. */
+	env_relocate();
+
+	/* board MAC address */
+	s = getenv("ethaddr");
+	for (i = 0; i < 6; ++i) {
+		bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
+		if (s)
+			s = (*e) ? e + 1 : e;
+	}
+
+	/* IP Address */
+	bd->bi_ip_addr = getenv_IPaddr("ipaddr");
+
+	/* Initialize devices */
+	devices_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 (CONFIG_COMMANDS & CFG_CMD_NET)
+	if ((s = getenv("bootfile")) != NULL) {
+		copy_filename(BootFile, s, sizeof(BootFile));
+	}
+#endif
+#if defined(CONFIG_MISC_INIT_R)
+	/* miscellaneous platform dependent initialisations */
+	misc_init_r();
+#endif
+
+#ifdef CONFIG_DRIVER_SMC91111
+#ifdef SHARED_RESOURCES
+	/* Switch to Ethernet */
+	swap_to(ETHERNET);
+#endif
+	if  ( (SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT ) {
+		printf("ERROR: Can't find SMC91111 at address %x\n", SMC_BASE_ADDRESS);
+	} else {
+		printf("Net:   SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS);
+	}
+
+#ifdef SHARED_RESOURCES
+	swap_to(FLASH);
+#endif
+#endif
+#ifdef CONFIG_SOFT_I2C
+	init_func_i2c();
+#endif
+
+#ifdef DEBUG
+	display_global_data(void);
+#endif
+
+	/* main_loop() can return to retry autoboot, if so just run it again. */
+	for (;;) {
+		main_loop();
+	}
+}
+
+#ifdef CONFIG_SOFT_I2C
+static int init_func_i2c (void)
+{
+	puts ("I2C:   ");
+	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+	puts ("ready\n");
+	return (0);
+}
+#endif
+
+void hang(void)
+{
+	puts("### ERROR ### Please RESET the board ###\n");
+	for (;;);
+}