mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 12:33:41 +00:00
3ff0900aaf
At present on a cold reboot we must reset the CPU to get it to full speed. With 64-bit U-Boot this happens in SPL. At present we print the banner before doing this, the end result being that we print the banner twice. Print the banner a little later (after the CPU is ready) to avoid this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
158 lines
3.3 KiB
C
158 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 2016 Google, Inc
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <debug_uart.h>
|
|
#include <init_helpers.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_spl_init(void)
|
|
{
|
|
/*
|
|
* TODO(sjg@chromium.org): We use this area of RAM for the stack
|
|
* and global_data in SPL. Once U-Boot starts up and releocates it
|
|
* is not needed. We could make this a CONFIG option or perhaps
|
|
* place it immediately below CONFIG_SYS_TEXT_BASE.
|
|
*/
|
|
char *ptr = (char *)0x110000;
|
|
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;
|
|
}
|
|
ret = dram_init();
|
|
if (ret) {
|
|
debug("%s: dram_init() failed\n", __func__);
|
|
return ret;
|
|
}
|
|
memset(&__bss_start, 0, (ulong)&__bss_end - (ulong)&__bss_start);
|
|
|
|
/* TODO(sjg@chromium.org): Consider calling cpu_init_r() here */
|
|
ret = interrupt_init();
|
|
if (ret) {
|
|
debug("%s: interrupt_init() failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* The stack grows down from ptr. Put the global data at ptr. This
|
|
* will only be used for SPL. Once SPL loads U-Boot proper it will
|
|
* set up its own stack.
|
|
*/
|
|
gd->new_gd = (struct global_data *)ptr;
|
|
memcpy(gd->new_gd, gd, sizeof(*gd));
|
|
arch_setup_gd(gd->new_gd);
|
|
gd->start_addr_sp = (ulong)ptr;
|
|
|
|
/* Cache the SPI flash. Otherwise copying the code to RAM takes ages */
|
|
ret = mtrr_add_request(MTRR_TYPE_WRBACK,
|
|
(1ULL << 32) - CONFIG_XIP_ROM_SIZE,
|
|
CONFIG_XIP_ROM_SIZE);
|
|
if (ret) {
|
|
debug("%s: SPI cache setup failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void board_init_f(ulong flags)
|
|
{
|
|
int ret;
|
|
|
|
ret = x86_spl_init();
|
|
if (ret) {
|
|
debug("Error %d\n", ret);
|
|
hang();
|
|
}
|
|
|
|
/* Uninit CAR and jump to board_init_f_r() */
|
|
board_init_f_r_trampoline(gd->start_addr_sp);
|
|
}
|
|
|
|
void board_init_f_r(void)
|
|
{
|
|
init_cache_f_r();
|
|
gd->flags &= ~GD_FLG_SERIAL_READY;
|
|
debug("cache status %d\n", dcache_status());
|
|
board_init_r(gd, 0);
|
|
}
|
|
|
|
u32 spl_boot_device(void)
|
|
{
|
|
return 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;
|
|
spl_image->entry_point = CONFIG_SYS_TEXT_BASE;
|
|
spl_image->load_addr = CONFIG_SYS_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)
|
|
{
|
|
int ret;
|
|
|
|
printf("Jumping to 64-bit U-Boot: Note many features are missing\n");
|
|
ret = cpu_jump_to_64bit_uboot(spl_image->entry_point);
|
|
debug("ret=%d\n", ret);
|
|
while (1)
|
|
;
|
|
}
|