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/*
* 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 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 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)();
}
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