mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-20 03:38:43 +00:00
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
|
/*
|
||
|
|
* Copyright 2011 Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <ns16550.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <nand.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
#include <asm/fsl_law.h>
|
||
|
|
#include <fsl_ddr_sdram.h>
|
||
|
|
#include <asm/global_data.h>
|
||
|
|
|
||
|
|
DECLARE_GLOBAL_DATA_PTR;
|
||
|
|
#define SYSCLK_MASK 0x00200000
|
||
|
|
#define BOARDREV_MASK 0x10100000
|
||
|
|
|
||
|
|
#define SYSCLK_66 66666666
|
||
|
|
#define SYSCLK_100 100000000
|
||
|
|
|
||
|
|
unsigned long get_board_sys_clk(ulong dummy)
|
||
|
|
{
|
||
|
|
ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
|
||
|
|
u32 val_gpdat, sysclk_gpio;
|
||
|
|
|
||
|
|
val_gpdat = in_be32(&pgpio->gpdat);
|
||
|
|
sysclk_gpio = val_gpdat & SYSCLK_MASK;
|
||
|
|
|
||
|
|
if (sysclk_gpio == 0)
|
||
|
|
return SYSCLK_66;
|
||
|
|
else
|
||
|
|
return SYSCLK_100;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void board_init_f(ulong bootflag)
|
||
|
|
{
|
||
|
|
u32 plat_ratio;
|
||
|
|
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
|
||
|
|
|
||
|
|
#if defined(CONFIG_SYS_NAND_BR_PRELIM) && defined(CONFIG_SYS_NAND_OR_PRELIM)
|
||
|
|
set_lbc_br(0, CONFIG_SYS_NAND_BR_PRELIM);
|
||
|
|
set_lbc_or(0, CONFIG_SYS_NAND_OR_PRELIM);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* initialize selected port with appropriate baud rate */
|
||
|
|
plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
|
||
|
|
plat_ratio >>= 1;
|
||
|
|
gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
|
||
|
|
|
||
|
|
NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
|
||
|
|
gd->bus_clk / 16 / CONFIG_BAUDRATE);
|
||
|
|
|
||
|
|
puts("\nNAND boot... ");
|
||
|
|
|
||
|
|
/* copy code to RAM and jump to it - this should not return */
|
||
|
|
/* NOTE - code has to be copied out of NAND buffer before
|
||
|
|
* other blocks can be read.
|
||
|
|
*/
|
||
|
|
relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
|
||
|
|
}
|
||
|
|
|
||
|
|
void board_init_r(gd_t *gd, ulong dest_addr)
|
||
|
|
{
|
||
|
|
puts("\nSecond program loader running in sram...");
|
||
|
|
nand_boot();
|
||
|
|
}
|
||
|
|
|
||
|
|
void putc(char c)
|
||
|
|
{
|
||
|
|
if (c == '\n')
|
||
|
|
NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
|
||
|
|
|
||
|
|
NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
|
||
|
|
}
|
||
|
|
|
||
|
|
void puts(const char *str)
|
||
|
|
{
|
||
|
|
while (*str)
|
||
|
|
putc(*str++);
|
||
|
|
}
|