/*
|
* Copyright 2013 Freescale Semiconductor, Inc.
|
*
|
* SPDX-License-Identifier: GPL-2.0+
|
*/
|
|
#include <common.h>
|
#include <spi_flash.h>
|
#include <malloc.h>
|
|
#define ESPI_BOOT_IMAGE_SIZE 0x48
|
#define ESPI_BOOT_IMAGE_ADDR 0x50
|
#define CONFIG_CFG_DATA_SECTOR 0
|
|
void fsl_spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
|
{
|
struct spi_flash *flash;
|
|
flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
|
CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
|
if (flash == NULL) {
|
puts("\nspi_flash_probe failed");
|
hang();
|
}
|
|
spi_flash_read(flash, offs, size, vdst);
|
}
|
|
/*
|
* The main entry for SPI booting. It's necessary that SDRAM is already
|
* configured and available since this code loads the main U-Boot image
|
* from SPI into SDRAM and starts it from there.
|
*/
|
void fsl_spi_boot(void)
|
{
|
void (*uboot)(void) __noreturn;
|
u32 offset, code_len, copy_len = 0;
|
#ifndef CONFIG_FSL_CORENET
|
unsigned char *buf = NULL;
|
#endif
|
struct spi_flash *flash;
|
|
flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
|
CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
|
if (flash == NULL) {
|
puts("\nspi_flash_probe failed");
|
hang();
|
}
|
|
#ifdef CONFIG_FSL_CORENET
|
offset = CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS;
|
code_len = CONFIG_SYS_SPI_FLASH_U_BOOT_SIZE;
|
#else
|
/*
|
* Load U-Boot image from SPI flash into RAM
|
*/
|
buf = malloc(flash->page_size);
|
if (buf == NULL) {
|
puts("\nmalloc failed");
|
hang();
|
}
|
memset(buf, 0, flash->page_size);
|
|
spi_flash_read(flash, CONFIG_CFG_DATA_SECTOR,
|
flash->page_size, (void *)buf);
|
offset = *(u32 *)(buf + ESPI_BOOT_IMAGE_ADDR);
|
/* Skip spl code */
|
offset += CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS;
|
/* Get the code size from offset 0x48 */
|
code_len = *(u32 *)(buf + ESPI_BOOT_IMAGE_SIZE);
|
/* Skip spl code */
|
code_len = code_len - CONFIG_SPL_MAX_SIZE;
|
#endif
|
/* copy code to DDR */
|
printf("Loading second stage boot loader ");
|
while (copy_len <= code_len) {
|
spi_flash_read(flash, offset + copy_len, 0x2000,
|
(void *)(CONFIG_SYS_SPI_FLASH_U_BOOT_DST
|
+ copy_len));
|
copy_len = copy_len + 0x2000;
|
putc('.');
|
}
|
|
/*
|
* Jump to U-Boot image
|
*/
|
flush_cache(CONFIG_SYS_SPI_FLASH_U_BOOT_DST, code_len);
|
uboot = (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_START;
|
(*uboot)();
|
}
|
