1 files changed, 419 insertions, 0 deletions
diff --git a/arch/blackfin/lib/board.c b/arch/blackfin/lib/board.c
new file mode 100644
index 000000000..4e9bb1922
--- /dev/null
+++ b/arch/blackfin/lib/board.c
@@ -0,0 +1,419 @@
+/*
+ * U-boot - board.c First C file to be called contains init routines
+ *
+ * Copyright (c) 2005-2008 Analog Devices Inc.
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <stdio_dev.h>
+#include <environment.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <net.h>
+#include <timestamp.h>
+#include <status_led.h>
+#include <version.h>
+
+#include <asm/cplb.h>
+#include <asm/mach-common/bits/mpu.h>
+#include <kgdb.h>
+
+#ifdef CONFIG_CMD_NAND
+#include <nand.h>	/* cannot even include nand.h if it isnt configured */
+#endif
+
+#ifdef CONFIG_BITBANGMII
+#include <miiphy.h>
+#endif
+
+#if defined(CONFIG_POST)
+#include <post.h>
+int post_flag;
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
+
+__attribute__((always_inline))
+static inline void serial_early_puts(const char *s)
+{
+#ifdef CONFIG_DEBUG_EARLY_SERIAL
+	serial_puts("Early: ");
+	serial_puts(s);
+#endif
+}
+
+static int display_banner(void)
+{
+	printf("\n\n%s\n\n", version_string);
+	printf("CPU:   ADSP " MK_STR(CONFIG_BFIN_CPU) " "
+		"(Detected Rev: 0.%d) "
+		"(%s boot)\n",
+		bfin_revid(),
+		get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE));
+	return 0;
+}
+
+static int init_baudrate(void)
+{
+	char baudrate[15];
+	int i = getenv_r("baudrate", baudrate, sizeof(baudrate));
+	gd->bd->bi_baudrate = gd->baudrate = (i > 0)
+	    ? simple_strtoul(baudrate, NULL, 10)
+	    : CONFIG_BAUDRATE;
+	return 0;
+}
+
+static void display_global_data(void)
+{
+	bd_t *bd;
+
+#ifndef CONFIG_DEBUG_EARLY_SERIAL
+	return;
+#endif
+
+	bd = gd->bd;
+	printf(" gd: %p\n", gd);
+	printf(" |-flags: %lx\n", gd->flags);
+	printf(" |-board_type: %lx\n", gd->board_type);
+	printf(" |-baudrate: %lu\n", gd->baudrate);
+	printf(" |-have_console: %lx\n", gd->have_console);
+	printf(" |-ram_size: %lx\n", gd->ram_size);
+	printf(" |-env_addr: %lx\n", gd->env_addr);
+	printf(" |-env_valid: %lx\n", gd->env_valid);
+	printf(" |-jt(%p): %p\n", gd->jt, *(gd->jt));
+	printf(" \\-bd: %p\n", gd->bd);
+	printf("   |-bi_baudrate: %x\n", bd->bi_baudrate);
+	printf("   |-bi_ip_addr: %lx\n", bd->bi_ip_addr);
+	printf("   |-bi_boot_params: %lx\n", bd->bi_boot_params);
+	printf("   |-bi_memstart: %lx\n", bd->bi_memstart);
+	printf("   |-bi_memsize: %lx\n", bd->bi_memsize);
+	printf("   |-bi_flashstart: %lx\n", bd->bi_flashstart);
+	printf("   |-bi_flashsize: %lx\n", bd->bi_flashsize);
+	printf("   \\-bi_flashoffset: %lx\n", bd->bi_flashoffset);
+}
+
+#define CPLB_PAGE_SIZE (4 * 1024 * 1024)
+#define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
+void init_cplbtables(void)
+{
+	volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
+	volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
+	uint32_t extern_memory;
+	size_t i;
+
+	void icplb_add(uint32_t addr, uint32_t data)
+	{
+		*(ICPLB_ADDR + i) = addr;
+		*(ICPLB_DATA + i) = data;
+	}
+	void dcplb_add(uint32_t addr, uint32_t data)
+	{
+		*(DCPLB_ADDR + i) = addr;
+		*(DCPLB_DATA + i) = data;
+	}
+
+	/* populate a few common entries ... we'll let
+	 * the memory map and cplb exception handler do
+	 * the rest of the work.
+	 */
+	i = 0;
+	ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
+	ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
+	DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
+	DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
+
+	icplb_add(0xFFA00000, L1_IMEMORY);
+	dcplb_add(0xFF800000, L1_DMEMORY);
+	++i;
+
+	if (CONFIG_MEM_SIZE) {
+		uint32_t mbase = CONFIG_SYS_MONITOR_BASE;
+		uint32_t mend  = mbase + CONFIG_SYS_MONITOR_LEN;
+		mbase &= CPLB_PAGE_MASK;
+		mend &= CPLB_PAGE_MASK;
+
+		icplb_add(mbase, SDRAM_IKERNEL);
+		dcplb_add(mbase, SDRAM_DKERNEL);
+		++i;
+
+		/*
+		 * If the monitor crosses a 4 meg boundary, we'll need
+		 * to lock two entries for it.  We assume it doesn't
+		 * cross two 4 meg boundaries ...
+		 */
+		if (mbase != mend) {
+			icplb_add(mend, SDRAM_IKERNEL);
+			dcplb_add(mend, SDRAM_DKERNEL);
+			++i;
+		}
+	}
+
+	icplb_add(0x20000000, SDRAM_INON_CHBL);
+	dcplb_add(0x20000000, SDRAM_EBIU);
+	++i;
+
+	/* Add entries for the rest of external RAM up to the bootrom */
+	extern_memory = 0;
+
+#ifdef CONFIG_DEBUG_NULL_PTR
+	icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
+	dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
+	++i;
+	icplb_add(extern_memory, SDRAM_IKERNEL);
+	dcplb_add(extern_memory, SDRAM_DKERNEL);
+	extern_memory += CPLB_PAGE_SIZE;
+	++i;
+#endif
+
+	while (i < 16 && extern_memory < (CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK)) {
+		icplb_add(extern_memory, SDRAM_IGENERIC);
+		dcplb_add(extern_memory, SDRAM_DGENERIC);
+		extern_memory += CPLB_PAGE_SIZE;
+		++i;
+	}
+	while (i < 16) {
+		icplb_add(0, 0);
+		dcplb_add(0, 0);
+		++i;
+	}
+}
+
+/*
+ * 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".
+ */
+
+extern int watchdog_init(void);
+extern int exception_init(void);
+extern int irq_init(void);
+extern int timer_init(void);
+
+void board_init_f(ulong bootflag)
+{
+	ulong addr;
+	bd_t *bd;
+	char buf[32];
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+	serial_early_puts("Board early init flash\n");
+	board_early_init_f();
+#endif
+
+	serial_early_puts("Init CPLB tables\n");
+	init_cplbtables();
+
+	serial_early_puts("Exceptions setup\n");
+	exception_init();
+
+#ifndef CONFIG_ICACHE_OFF
+	serial_early_puts("Turn on ICACHE\n");
+	icache_enable();
+#endif
+#ifndef CONFIG_DCACHE_OFF
+	serial_early_puts("Turn on DCACHE\n");
+	dcache_enable();
+#endif
+
+#ifdef CONFIG_WATCHDOG
+	serial_early_puts("Setting up external watchdog\n");
+	watchdog_init();
+#endif
+
+#ifdef DEBUG
+	if (CONFIG_SYS_GBL_DATA_SIZE < sizeof(*gd))
+		hang();
+#endif
+	serial_early_puts("Init global data\n");
+	gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
+	memset((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
+
+	/* Board data initialization */
+	addr = (CONFIG_SYS_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));
+
+	bd->bi_r_version = version_string;
+	bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
+	bd->bi_board_name = BFIN_BOARD_NAME;
+	bd->bi_vco = get_vco();
+	bd->bi_cclk = get_cclk();
+	bd->bi_sclk = get_sclk();
+	bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
+	bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
+
+	/* Initialize */
+	serial_early_puts("IRQ init\n");
+	irq_init();
+	serial_early_puts("Environment init\n");
+	env_init();
+	serial_early_puts("Baudrate init\n");
+	init_baudrate();
+	serial_early_puts("Serial init\n");
+	serial_init();
+	serial_early_puts("Console init flash\n");
+	console_init_f();
+	serial_early_puts("End of early debugging\n");
+	display_banner();
+
+	checkboard();
+	timer_init();
+
+	printf("Clock: VCO: %s MHz, ", strmhz(buf, get_vco()));
+	printf("Core: %s MHz, ", strmhz(buf, get_cclk()));
+	printf("System: %s MHz\n", strmhz(buf, get_sclk()));
+
+	printf("RAM:   ");
+	print_size(bd->bi_memsize, "\n");
+#if defined(CONFIG_POST)
+	post_init_f();
+	post_bootmode_init();
+	post_run(NULL, POST_ROM | post_bootmode_get(0));
+#endif
+
+	board_init_r((gd_t *) gd, 0x20000010);
+}
+
+static void board_net_init_r(bd_t *bd)
+{
+#ifdef CONFIG_BITBANGMII
+	bb_miiphy_init();
+#endif
+#ifdef CONFIG_CMD_NET
+	char *s;
+
+	if ((s = getenv("bootfile")) != NULL)
+		copy_filename(BootFile, s, sizeof(BootFile));
+
+	bd->bi_ip_addr = getenv_IPaddr("ipaddr");
+
+	printf("Net:   ");
+	eth_initialize(gd->bd);
+#endif
+}
+
+void board_init_r(gd_t * id, ulong dest_addr)
+{
+	char *s;
+	bd_t *bd;
+	gd = id;
+	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
+	bd = gd->bd;
+
+#if defined(CONFIG_POST)
+	post_output_backlog();
+	post_reloc();
+#endif
+
+	/* initialize malloc() area */
+	mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
+
+#if	!defined(CONFIG_SYS_NO_FLASH)
+	/* Initialize the flash and protect u-boot by default */
+	extern flash_info_t flash_info[];
+	puts("Flash: ");
+	ulong size = flash_init();
+	print_size(size, "\n");
+	flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE,
+		CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN - 1,
+		&flash_info[0]);
+	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
+	bd->bi_flashsize = size;
+	bd->bi_flashoffset = 0;
+#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
+
+#ifdef CONFIG_GENERIC_MMC
+	puts("MMC:  ");
+	mmc_initialize(bd);
+#endif
+
+	/* relocate environment function pointers etc. */
+	env_relocate();
+
+	/* Initialize stdio devices */
+	stdio_init();
+	jumptable_init();
+
+	/* Initialize the console (after the relocation and devices init) */
+	console_init_r();
+
+#ifdef CONFIG_CMD_KGDB
+	puts("KGDB:  ");
+	kgdb_init();
+#endif
+
+#ifdef CONFIG_STATUS_LED
+	status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
+	status_led_set(STATUS_LED_CRASH, STATUS_LED_OFF);
+#endif
+
+	/* Initialize from environment */
+	if ((s = getenv("loadaddr")) != NULL)
+		load_addr = simple_strtoul(s, NULL, 16);
+
+#if defined(CONFIG_MISC_INIT_R)
+	/* miscellaneous platform dependent initialisations */
+	misc_init_r();
+#endif
+
+	board_net_init_r(bd);
+
+	display_global_data();
+
+#if defined(CONFIG_POST)
+	if (post_flag)
+		post_run(NULL, POST_RAM | post_bootmode_get(0));
+#endif
+
+	if (bfin_os_log_check()) {
+		puts("\nLog buffer from operating system:\n");
+		bfin_os_log_dump();
+		puts("\n");
+	}
+
+	/* main_loop() can return to retry autoboot, if so just run it again. */
+	for (;;)
+		main_loop();
+}
+
+void hang(void)
+{
+#ifdef CONFIG_STATUS_LED
+	status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
+	status_led_set(STATUS_LED_CRASH, STATUS_LED_BLINKING);
+#endif
+	puts("### ERROR ### Please RESET the board ###\n");
+	while (1)
+		/* If a JTAG emulator is hooked up, we'll automatically trigger
+		 * a breakpoint in it.  If one isn't, this is just a NOP.
+		 */
+		asm("emuexcpt;");
+}