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/*
* Copyright (C) 2004-2006 Atmel Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <stdio_dev.h>
#include <version.h>
#include <net.h>
#ifdef CONFIG_BITBANGMII
#include <miiphy.h>
#endif
#include <asm/sections.h>
#include <asm/arch/mmu.h>
#include <asm/arch/hardware.h>
#ifndef CONFIG_IDENT_STRING
#define CONFIG_IDENT_STRING ""
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
#include <mmc.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
unsigned long monitor_flash_len;
__weak void dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_dram[0].size = gd->ram_size;
}
/* Weak aliases for optional board functions */
static int __do_nothing(void)
{
return 0;
}
int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
static int init_baudrate(void)
{
gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
return 0;
}
static int display_banner (void)
{
printf ("\n\n%s\n\n", version_string);
printf ("U-Boot code: %08lx -> %08lx data: %08lx -> %08lx\n",
(unsigned long)_text, (unsigned long)_etext,
(unsigned long)_data, (unsigned long)(&__bss_end));
return 0;
}
static int display_dram_config (void)
{
int i;
puts ("DRAM Configuration:\n");
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
print_size (gd->bd->bi_dram[i].size, "\n");
}
return 0;
}
static void display_flash_config (void)
{
puts ("Flash: ");
print_size(gd->bd->bi_flashsize, " ");
printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
}
void board_init_f(ulong board_type)
{
gd_t gd_data;
gd_t *new_gd;
bd_t *bd;
unsigned long *new_sp;
unsigned long monitor_len;
unsigned long monitor_addr;
unsigned long addr;
/* Initialize the global data pointer */
memset(&gd_data, 0, sizeof(gd_data));
gd = &gd_data;
/* Perform initialization sequence */
board_early_init_f();
arch_cpu_init();
board_postclk_init();
env_init();
init_baudrate();
serial_init();
console_init_f();
display_banner();
dram_init();
/* If we have no SDRAM, we can't go on */
if (gd->ram_size <= 0)
panic("No working SDRAM available\n");
/*
* Now that we have DRAM mapped and working, we can
* relocate the code and continue running from DRAM.
*
* Reserve memory at end of RAM for (top down in that order):
* - u-boot image
* - heap for malloc()
* - board info struct
* - global data struct
* - stack
*/
addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
monitor_len = (char *)(&__bss_end) - _text;
/*
* Reserve memory for u-boot code, data and bss.
* Round down to next 4 kB limit.
*/
addr -= monitor_len;
addr &= ~(4096UL - 1);
monitor_addr = addr;
/* Reserve memory for malloc() */
addr -= CONFIG_SYS_MALLOC_LEN;
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
printf("LCD: Frame buffer allocated at preset 0x%08x\n",
CONFIG_FB_ADDR);
gd->fb_base = CONFIG_FB_ADDR;
#else
addr = lcd_setmem(addr);
printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
gd->fb_base = addr;
#endif /* CONFIG_FB_ADDR */
#endif /* CONFIG_LCD */
/* Allocate a Board Info struct on a word boundary */
addr -= sizeof(bd_t);
addr &= ~3UL;
gd->bd = bd = (bd_t *)addr;
/* Allocate a new global data copy on a 8-byte boundary. */
addr -= sizeof(gd_t);
addr &= ~7UL;
new_gd = (gd_t *)addr;
/* And finally, a new, bigger stack. */
new_sp = (unsigned long *)addr;
gd->start_addr_sp = addr;
*(--new_sp) = 0;
*(--new_sp) = 0;
dram_init_banksize();
memcpy(new_gd, gd, sizeof(gd_t));
relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
}
void board_init_r(gd_t *new_gd, ulong dest_addr)
{
#ifndef CONFIG_ENV_IS_NOWHERE
extern char * env_name_spec;
#endif
bd_t *bd;
gd = new_gd;
bd = gd->bd;
gd->flags |= GD_FLG_RELOC;
gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
/* Enable the MMU so that we can keep u-boot simple */
mmu_init_r(dest_addr);
board_early_init_r();
monitor_flash_len = _edata - _text;
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
/*
* We have to relocate the command table manually
*/
fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
ll_entry_count(cmd_tbl_t, cmd));
#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
/* there are some other pointer constants we must deal with */
#ifndef CONFIG_ENV_IS_NOWHERE
env_name_spec += gd->reloc_off;
#endif
timer_init();
/* The malloc area is right below the monitor image in RAM */
mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
enable_interrupts();
bd->bi_flashstart = 0;
bd->bi_flashsize = 0;
bd->bi_flashoffset = 0;
#ifndef CONFIG_SYS_NO_FLASH
bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
bd->bi_flashsize = flash_init();
bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
if (bd->bi_flashsize)
display_flash_config();
#endif
if (bd->bi_dram[0].size)
display_dram_config();
gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
if (!gd->bd->bi_boot_params)
puts("WARNING: Cannot allocate space for boot parameters\n");
/* initialize environment */
env_relocate();
stdio_init();
jumptable_init();
console_init_r();
/* Initialize from environment */
load_addr = getenv_ulong("loadaddr", 16, load_addr);
#ifdef CONFIG_BITBANGMII
bb_miiphy_init();
#endif
#if defined(CONFIG_CMD_NET)
puts("Net: ");
eth_initialize(gd->bd);
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
mmc_initialize(gd->bd);
#endif
for (;;) {
main_loop();
}
}
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