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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Renesas Electronics Corporation
*
*/
#include <common.h>
#include <linux/libfdt.h>
/* If the firmware passed a device tree, use it for soc identification. */
extern u64 rcar_atf_boot_args[];
/* CPU information table */
static const struct {
char *soc_name;
u8 cpu_name[10];
} tfa_info[] = {
{ "renesas,r8a774a1", "R8A774A1" },
{ "renesas,r8a774b1", "R8A774B1" },
{ "renesas,r8a774c0", "R8A774C0" },
{ "renesas,r8a774e1", "R8A774E1" }
};
const u8 *rzg_get_cpu_name(void)
{
void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
bool ret = false;
int i;
if (fdt_magic(atf_fdt_blob) != FDT_MAGIC)
return NULL;
for (i = 0; i < ARRAY_SIZE(tfa_info); i++) {
if (fdt_node_check_compatible(atf_fdt_blob, 0,
tfa_info[i].soc_name) == 0) {
ret = true;
break;
}
}
return ret ? tfa_info[i].cpu_name : NULL;
}
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