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-rw-r--r--lib_blackfin/board.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c
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+/*
+ * 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 (;;);
+}