u-boot/arch/riscv/lib/spl.c
Bin Meng 191636e448 riscv: Introduce SPL_SMP Kconfig option for U-Boot SPL
With SBI v0.2 HSM extension, only a single hart need to boot and
enter operating system. The booting hart can bring up secondary
harts one by one afterwards.

For U-Boot running in SPL, SMP can be turned on, while in U-Boot
proper, SMP can be optionally turned off if using SBI v0.2 HSM.

Introduce a new SPL_SMP Kconfig option to support this.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-04-23 10:14:06 +08:00

50 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Fraunhofer AISEC,
* Lukas Auer <lukas.auer@aisec.fraunhofer.de>
*/
#include <common.h>
#include <cpu_func.h>
#include <hang.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_SPL_SMP
ret = smp_call_function(spl_image->entry_point, (ulong)fdt_blob, 0, 0);
if (ret)
hang();
#endif
image_entry(gd->arch.boot_hart, fdt_blob);
}