u-boot/arch/riscv/lib/spl.c
Lukas Auer 8c59f2023c riscv: add SPL support
U-Boot SPL on the generic RISC-V CPU supports two boot flows, directly
jumping to the image and via OpenSBI firmware. In the first case, both
U-Boot SPL and proper must be compiled to run in the same privilege
mode. Using OpenSBI firmware, U-Boot SPL must be compiled for machine
mode and U-Boot proper for supervisor mode.

To be able to use SPL, boards have to provide a supported SPL boot
device.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-08-26 16:07:42 +08:00

48 lines
1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Fraunhofer AISEC,
* Lukas Auer <lukas.auer@aisec.fraunhofer.de>
*/
#include <common.h>
#include <spl.h>
#include <asm/smp.h>
DECLARE_GLOBAL_DATA_PTR;
__weak void board_init_f(ulong dummy)
{
int ret;
ret = spl_early_init();
if (ret)
panic("spl_early_init() failed: %d\n", ret);
arch_cpu_init_dm();
preloader_console_init();
}
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
typedef void __noreturn (*image_entry_riscv_t)(ulong hart, void *dtb);
void *fdt_blob;
int ret;
#if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
fdt_blob = spl_image->fdt_addr;
#else
fdt_blob = (void *)gd->fdt_blob;
#endif
image_entry_riscv_t image_entry =
(image_entry_riscv_t)spl_image->entry_point;
invalidate_icache_all();
debug("image entry point: 0x%lX\n", spl_image->entry_point);
#ifdef CONFIG_SMP
ret = smp_call_function(spl_image->entry_point, (ulong)fdt_blob, 0);
if (ret)
hang();
#endif
image_entry(gd->arch.boot_hart, fdt_blob);
}