u-boot/arch/x86/lib/tpl.c
Simon Glass 7c03caf6fa x86: Add a simple TPL implementation
Add the required CPU code so that TPL builds correctly. Also update the
SPL code to deal with being booted from TPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-05-08 13:02:18 +08:00

118 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2018 Google, Inc
*/
#include <common.h>
#include <debug_uart.h>
#include <spl.h>
#include <asm/cpu.h>
#include <asm/mtrr.h>
#include <asm/processor.h>
#include <asm-generic/sections.h>
DECLARE_GLOBAL_DATA_PTR;
__weak int arch_cpu_init_dm(void)
{
return 0;
}
static int x86_tpl_init(void)
{
int ret;
debug("%s starting\n", __func__);
ret = spl_init();
if (ret) {
debug("%s: spl_init() failed\n", __func__);
return ret;
}
ret = arch_cpu_init();
if (ret) {
debug("%s: arch_cpu_init() failed\n", __func__);
return ret;
}
ret = arch_cpu_init_dm();
if (ret) {
debug("%s: arch_cpu_init_dm() failed\n", __func__);
return ret;
}
preloader_console_init();
ret = print_cpuinfo();
if (ret) {
debug("%s: print_cpuinfo() failed\n", __func__);
return ret;
}
return 0;
}
void board_init_f(ulong flags)
{
int ret;
ret = x86_tpl_init();
if (ret) {
debug("Error %d\n", ret);
hang();
}
/* Uninit CAR and jump to board_init_f_r() */
board_init_r(gd, 0);
}
void board_init_f_r(void)
{
/* Not used since we never call board_init_f_r_trampoline() */
while (1);
}
u32 spl_boot_device(void)
{
return IS_ENABLED(CONFIG_CHROMEOS) ? BOOT_DEVICE_CROS_VBOOT :
BOOT_DEVICE_BOARD;
}
int spl_start_uboot(void)
{
return 0;
}
void spl_board_announce_boot_device(void)
{
printf("SPI flash");
}
static int spl_board_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
spl_image->size = CONFIG_SYS_MONITOR_LEN; /* We don't know SPL size */
spl_image->entry_point = CONFIG_SPL_TEXT_BASE;
spl_image->load_addr = CONFIG_SPL_TEXT_BASE;
spl_image->os = IH_OS_U_BOOT;
spl_image->name = "U-Boot";
debug("Loading to %lx\n", spl_image->load_addr);
return 0;
}
SPL_LOAD_IMAGE_METHOD("SPI", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
int spl_spi_load_image(void)
{
return -EPERM;
}
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
printf("Jumping to U-Boot SPL at %lx\n", (ulong)spl_image->entry_point);
jump_to_spl(spl_image->entry_point);
while (1)
;
}
void spl_board_init(void)
{
preloader_console_init();
}