mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
5614e71b49
Freescale DDR driver has been used for mpc83xx, mpc85xx, mpc86xx SoCs. The similar DDR controllers will be used for ARM-based SoCs. Signed-off-by: York Sun <yorksun@freescale.com>
71 lines
1.7 KiB
C
71 lines
1.7 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 <asm/fsl_law.h>
|
|
#include <fsl_ddr_sdram.h>
|
|
|
|
|
|
const static u32 sysclk_tbl[] = {
|
|
66666000, 7499900, 83332500, 8999900,
|
|
99999000, 11111000, 12499800, 13333200
|
|
};
|
|
|
|
void board_init_f(ulong bootflag)
|
|
{
|
|
int px_spd;
|
|
u32 plat_ratio, sys_clk, bus_clk;
|
|
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
|
|
/* for FPGA */
|
|
set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
|
|
set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
|
|
|
|
/* initialize selected port with appropriate baud rate */
|
|
px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
|
|
sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
|
|
plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
|
|
bus_clk = sys_clk * plat_ratio / 2;
|
|
|
|
NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
|
|
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++);
|
|
}
|