upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.7 KiB
67 lines
1.7 KiB
/*
|
|
* 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
|
|
|
|
/*
|
|
* 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;
|
|
unsigned char *buf = NULL;
|
|
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 */
|
|
spi_flash_read(flash, offset, code_len,
|
|
(void *)CONFIG_SYS_SPI_FLASH_U_BOOT_DST);
|
|
/*
|
|
* 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)();
|
|
}
|
|
|