diff options
Diffstat (limited to 'arch/blackfin/lib/board.c')
| -rw-r--r-- | arch/blackfin/lib/board.c | 419 |
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 0000000..4e9bb19 --- /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;"); +} |