blob: 49465d2a058a706c543b8f7d989c8a2724e9c143 [file] [log] [blame]
/*
* 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 <devices.h>
#include <environment.h>
#include <malloc.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>
#ifdef CONFIG_CMD_NAND
#include <nand.h> /* cannot even include nand.h if it isnt configured */
#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 void *mem_malloc_start, *mem_malloc_end, *mem_malloc_brk;
static void mem_malloc_init(void)
{
mem_malloc_start = (void *)CONFIG_SYS_MALLOC_BASE;
mem_malloc_end = (void *)(CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN);
mem_malloc_brk = mem_malloc_start;
memset(mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
}
void *sbrk(ptrdiff_t increment)
{
void *old = mem_malloc_brk;
void *new = old + increment;
if (new < mem_malloc_start || new > mem_malloc_end)
return NULL;
mem_malloc_brk = new;
return old;
}
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)
{
#ifdef CONFIG_DEBUG_EARLY_SERIAL
bd_t *bd;
bd = gd->bd;
printf(" gd: %x\n", gd);
printf(" |-flags: %x\n", gd->flags);
printf(" |-board_type: %x\n", gd->board_type);
printf(" |-baudrate: %i\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(" |-jt(%x): %x\n", gd->jt, *(gd->jt));
printf(" \\-bd: %x\n", gd->bd);
printf(" |-bi_baudrate: %x\n", bd->bi_baudrate);
printf(" |-bi_ip_addr: %x\n", bd->bi_ip_addr);
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);
#endif
}
#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;
icplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_IKERNEL);
dcplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_DKERNEL);
++i;
/* If the monitor crosses a 4 meg boundary, we'll need
* to lock two entries for it.
*/
if ((CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK) != ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK)) {
icplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_IKERNEL);
dcplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, 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 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 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();
/* 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(initdram(0), "\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_CMD_NET
uchar enetaddr[6];
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);
eth_getenv_enetaddr("ethaddr", enetaddr);
printf("MAC: %pM\n", enetaddr);
#endif
}
void board_init_r(gd_t * id, ulong dest_addr)
{
extern void malloc_bin_reloc(void);
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
#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
/* initialize malloc() area */
mem_malloc_init();
malloc_bin_reloc();
#ifdef CONFIG_CMD_NAND
puts("NAND: ");
nand_init(); /* go init the NAND */
#endif
/* relocate environment function pointers etc. */
env_relocate();
/* Initialize devices */
devices_init();
jumptable_init();
/* Initialize the console (after the relocation and devices init) */
console_init_r();
#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
/* 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;");
}