Freescale u-boot repository
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/*
* Copyright 2013-2015 Arcturus Networks, Inc.
* http://www.arcturusnetworks.com/products/ucp1020/
* based on board/freescale/p1_p2_rdb_pc/spl.c
* original copyright follows:
* Copyright 2013 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <console.h>
#include <ns16550.h>
#include <malloc.h>
#include <mmc.h>
#include <nand.h>
#include <i2c.h>
#include <fsl_esdhc.h>
#include <spi_flash.h>
DECLARE_GLOBAL_DATA_PTR;
static const u32 sysclk_tbl[] = {
66666000, 7499900, 83332500, 8999900,
99999000, 11111000, 12499800, 13333200
};
phys_size_t get_effective_memsize(void)
{
return CONFIG_SYS_L2_SIZE;
}
void board_init_f(ulong bootflag)
{
u32 plat_ratio, bus_clk;
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
console_init_f();
/* Set pmuxcr to allow both i2c1 and i2c2 */
setbits_be32(&gur->pmuxcr, in_be32(&gur->pmuxcr) | 0x1000);
setbits_be32(&gur->pmuxcr,
in_be32(&gur->pmuxcr) | MPC85xx_PMUXCR_SD_DATA);
/* Read back the register to synchronize the write. */
in_be32(&gur->pmuxcr);
#ifdef CONFIG_SPL_SPI_BOOT
clrbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_SD_DATA);
#endif
/* initialize selected port with appropriate baud rate */
plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
plat_ratio >>= 1;
bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
gd->bus_clk = bus_clk;
NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
bus_clk / 16 / CONFIG_BAUDRATE);
#ifdef CONFIG_SPL_MMC_BOOT
puts("\nSD boot...\n");
#elif defined(CONFIG_SPL_SPI_BOOT)
puts("\nSPI Flash boot...\n");
#endif
/* 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)
{
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *)CONFIG_SPL_GD_ADDR;
bd_t *bd;
memset(gd, 0, sizeof(gd_t));
bd = (bd_t *)(CONFIG_SPL_GD_ADDR + sizeof(gd_t));
memset(bd, 0, sizeof(bd_t));
gd->bd = bd;
bd->bi_memstart = CONFIG_SYS_INIT_L2_ADDR;
bd->bi_memsize = CONFIG_SYS_L2_SIZE;
probecpu();
get_clocks();
mem_malloc_init(CONFIG_SPL_RELOC_MALLOC_ADDR,
CONFIG_SPL_RELOC_MALLOC_SIZE);
#ifndef CONFIG_SPL_NAND_BOOT
env_init();
#endif
#ifdef CONFIG_SPL_MMC_BOOT
mmc_initialize(bd);
#endif
/* relocate environment function pointers etc. */
#ifdef CONFIG_SPL_NAND_BOOT
nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
(uchar *)CONFIG_ENV_ADDR);
gd->env_addr = (ulong)(CONFIG_ENV_ADDR);
gd->env_valid = 1;
#else
env_relocate();
#endif
#ifdef CONFIG_SYS_I2C
i2c_init_all();
#else
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
gd->ram_size = initdram(0);
#ifdef CONFIG_SPL_NAND_BOOT
puts("Tertiary program loader running in sram...");
#else
puts("Second program loader running in sram...\n");
#endif
#ifdef CONFIG_SPL_MMC_BOOT
mmc_boot();
#elif defined(CONFIG_SPL_SPI_BOOT)
spi_boot();
#elif defined(CONFIG_SPL_NAND_BOOT)
nand_boot();
#endif
}