u-boot/lib_blackfin/board.c

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2006-03-12 01:12:27 +00:00
/*
* U-boot - board.c First C file to be called contains init routines
*
* Copyright (c) 2005-2007 Analog Devices Inc.
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*
* (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., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
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*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <devices.h>
#include <version.h>
#include <net.h>
#include <environment.h>
#include <i2c.h>
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#include "blackfin_board.h"
#include <asm/cplb.h>
#include "../drivers/net/smc91111.h"
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#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
#include <post.h>
int post_flag;
#endif
DECLARE_GLOBAL_DATA_PTR;
#ifndef CFG_NO_FLASH
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extern flash_info_t flash_info[];
#endif
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static inline u_long get_vco(void)
{
u_long msel;
u_long vco;
msel = (*pPLL_CTL >> 9) & 0x3F;
if (0 == msel)
msel = 64;
vco = CONFIG_CLKIN_HZ;
vco >>= (1 & *pPLL_CTL); /* DF bit */
vco = msel * vco;
return vco;
}
/*Get the Core clock*/
u_long get_cclk(void)
{
u_long csel, ssel;
if (*pPLL_STAT & 0x1)
return CONFIG_CLKIN_HZ;
ssel = *pPLL_DIV;
csel = ((ssel >> 4) & 0x03);
ssel &= 0xf;
if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
return get_vco() / ssel;
return get_vco() >> csel;
}
/* Get the System clock */
u_long get_sclk(void)
{
u_long ssel;
if (*pPLL_STAT & 0x1)
return CONFIG_CLKIN_HZ;
ssel = (*pPLL_DIV & 0xf);
return get_vco() / ssel;
}
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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);
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}
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);
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}
static int display_banner(void)
{
sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING);
printf("%s\n", version_string);
printf("CPU: ADSP " MK_STR(CONFIG_BFIN_CPU) " (Detected Rev: 0.%d)\n", bfin_revid());
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return (0);
}
static void display_flash_config(ulong size)
{
puts("FLASH: ");
print_size(size, "\n");
return;
}
static int init_baudrate(void)
{
char tmp[64];
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int i = getenv_r("baudrate", tmp, sizeof(tmp));
gd->bd->bi_baudrate = gd->baudrate = (i > 0)
? (int)simple_strtoul(tmp, NULL, 10)
: CONFIG_BAUDRATE;
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return (0);
}
#ifdef DEBUG
static void display_global_data(void)
{
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]);
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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
/* we cover everything with 4 meg pages, and need an extra for L1 */
unsigned int icplb_table[page_descriptor_table_size][2];
unsigned int dcplb_table[page_descriptor_table_size][2];
void init_cplbtables(void)
{
int i, j;
j = 0;
icplb_table[j][0] = 0xFFA00000;
icplb_table[j][1] = L1_IMEMORY;
j++;
for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
icplb_table[j][0] = (i * 4 * 1024 * 1024);
if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
&& (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
icplb_table[j][1] = SDRAM_IKERNEL;
} else {
icplb_table[j][1] = SDRAM_IGENERIC;
}
j++;
}
#if defined(CONFIG_BF561)
/* MAC space */
icplb_table[j][0] = 0x2C000000;
icplb_table[j][1] = SDRAM_INON_CHBL;
j++;
/* Async Memory space */
for (i = 0; i < 3; i++) {
icplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
icplb_table[j][1] = SDRAM_INON_CHBL;
j++;
}
#else
icplb_table[j][0] = 0x20000000;
icplb_table[j][1] = SDRAM_INON_CHBL;
#endif
j = 0;
dcplb_table[j][0] = 0xFF800000;
dcplb_table[j][1] = L1_DMEMORY;
j++;
for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
dcplb_table[j][0] = (i * 4 * 1024 * 1024);
if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
&& (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
dcplb_table[j][1] = SDRAM_DKERNEL;
} else {
dcplb_table[j][1] = SDRAM_DGENERIC;
}
j++;
}
#if defined(CONFIG_BF561)
/* MAC space */
dcplb_table[j][0] = 0x2C000000;
dcplb_table[j][1] = SDRAM_EBIU;
j++;
/* Flash space */
for (i = 0; i < 3; i++) {
dcplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
dcplb_table[j][1] = SDRAM_EBIU;
j++;
}
#else
dcplb_table[j][0] = 0x20000000;
dcplb_table[j][1] = SDRAM_EBIU;
#endif
}
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/*
* 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)
{
ulong addr;
bd_t *bd;
int i;
init_cplbtables();
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gd = (gd_t *) (CFG_GBL_DATA_ADDR);
memset((void *)gd, 0, sizeof(gd_t));
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/* Board data initialization */
addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));
/* Align to 4 byte boundary */
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addr &= ~(4 - 1);
bd = (bd_t *) addr;
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gd->bd = bd;
memset((void *)bd, 0, sizeof(bd_t));
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/* Initialize */
init_IRQ();
env_init(); /* initialize environment */
init_baudrate(); /* initialze baudrate settings */
serial_init(); /* serial communications setup */
console_init_f();
#ifdef CONFIG_ICACHE_ON
icache_enable();
#endif
#ifdef CONFIG_DCACHE_ON
dcache_enable();
#endif
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display_banner(); /* say that we are here */
for (i = 0; i < page_descriptor_table_size; i++) {
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debug
("data (%02i)= 0x%08x : 0x%08x intr = 0x%08x : 0x%08x\n",
i, dcplb_table[i][0], dcplb_table[i][1], icplb_table[i][0],
icplb_table[i][1]);
}
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checkboard();
#if defined(CONFIG_RTC_BF533) && defined(CONFIG_CMD_DATE)
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rtc_init();
#endif
timer_init();
printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
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printf("SDRAM: ");
print_size(initdram(0), "\n");
#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
post_init_f();
post_bootmode_init();
post_run(NULL, POST_ROM | post_bootmode_get(0));
#endif
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board_init_r((gd_t *) gd, 0x20000010);
}
#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
static int init_func_i2c(void)
{
puts("I2C: ");
i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
puts("ready\n");
return (0);
}
#endif
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void board_init_r(gd_t * id, ulong dest_addr)
{
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 defined(CONFIG_BF537) && defined(CONFIG_POST)
post_output_backlog();
post_reloc();
#endif
#if (CONFIG_STAMP || CONFIG_BF537 || CONFIG_EZKIT561) && !defined(CFG_NO_FLASH)
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/* 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]);
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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();
#ifdef CONFIG_SPI
# if ! defined(CFG_ENV_IS_IN_EEPROM)
spi_init_f();
# endif
spi_init_r();
#endif
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/* 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 defined(CONFIG_CMD_NET)
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if ((s = getenv("bootfile")) != NULL) {
copy_filename(BootFile, s, sizeof(BootFile));
}
#endif
#if defined(CONFIG_CMD_NAND)
puts("NAND: ");
nand_init(); /* go init the NAND */
#endif
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#if defined(CONFIG_MISC_INIT_R)
/* miscellaneous platform dependent initialisations */
misc_init_r();
#endif
#ifdef CONFIG_CMD_NET
printf("Net: ");
eth_initialize(bd);
#endif
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#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);
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} else {
printf("Net: SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS);
}
#ifdef SHARED_RESOURCES
swap_to(FLASH);
#endif
#endif
#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
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init_func_i2c();
#endif
#ifdef DEBUG
display_global_data();
#endif
#if defined(CONFIG_BF537) && defined(CONFIG_POST)
if (post_flag)
post_run(NULL, POST_RAM | post_bootmode_get(0));
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#endif
/* main_loop() can return to retry autoboot, if so just run it again. */
for (;;) {
main_loop();
}
}
void hang(void)
{
puts("### ERROR ### Please RESET the board ###\n");
for (;;) ;
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}