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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Fraunhofer AISEC,
* Lukas Auer <lukas.auer@aisec.fraunhofer.de>
*
* Based on common/spl/spl_atf.c
*/
#include <common.h>
#include <cpu_func.h>
#include <errno.h>
#include <spl.h>
#include <asm/smp.h>
#include <opensbi.h>
DECLARE_GLOBAL_DATA_PTR;
struct fw_dynamic_info opensbi_info;
static int spl_opensbi_find_uboot_node(void *blob, int *uboot_node)
{
int fit_images_node, node;
const char *fit_os;
fit_images_node = fdt_path_offset(blob, "/fit-images");
if (fit_images_node < 0)
return -ENODEV;
fdt_for_each_subnode(node, blob, fit_images_node) {
fit_os = fdt_getprop(blob, node, FIT_OS_PROP, NULL);
if (!fit_os)
continue;
if (genimg_get_os_id(fit_os) == IH_OS_U_BOOT) {
*uboot_node = node;
return 0;
}
}
return -ENODEV;
}
void spl_invoke_opensbi(struct spl_image_info *spl_image)
{
int ret, uboot_node;
ulong uboot_entry;
void (*opensbi_entry)(ulong hartid, ulong dtb, ulong info);
if (!spl_image->fdt_addr) {
pr_err("No device tree specified in SPL image\n");
hang();
}
/* Find U-Boot image in /fit-images */
ret = spl_opensbi_find_uboot_node(spl_image->fdt_addr, &uboot_node);
if (ret) {
pr_err("Can't find U-Boot node, %d", ret);
hang();
}
/* Get U-Boot entry point */
uboot_entry = fdt_getprop_u32(spl_image->fdt_addr, uboot_node,
"entry-point");
if (uboot_entry == FDT_ERROR)
uboot_entry = fdt_getprop_u32(spl_image->fdt_addr, uboot_node,
"load-addr");
/* Prepare obensbi_info object */
opensbi_info.magic = FW_DYNAMIC_INFO_MAGIC_VALUE;
opensbi_info.version = FW_DYNAMIC_INFO_VERSION;
opensbi_info.next_addr = uboot_entry;
opensbi_info.next_mode = FW_DYNAMIC_INFO_NEXT_MODE_S;
opensbi_info.options = SBI_SCRATCH_NO_BOOT_PRINTS;
opensbi_info.boot_hart = gd->arch.boot_hart;
opensbi_entry = (void (*)(ulong, ulong, ulong))spl_image->entry_point;
invalidate_icache_all();
#ifdef CONFIG_SMP
ret = smp_call_function((ulong)spl_image->entry_point,
(ulong)spl_image->fdt_addr,
(ulong)&opensbi_info, 0);
if (ret)
hang();
#endif
opensbi_entry(gd->arch.boot_hart, (ulong)spl_image->fdt_addr,
(ulong)&opensbi_info);
}
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