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