| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2021,2023 Renesas Electronics Corporation |
| * |
| */ |
| |
| #include <mach/rmobile.h> |
| #include <asm/io.h> |
| #include <linux/libfdt.h> |
| |
| #define SYSC_LSI_DEVID 0x11020A04 |
| |
| /* If the firmware passed a device tree, use it for soc identification. */ |
| extern u64 rcar_atf_boot_args[]; |
| |
| /* CPU information table */ |
| struct tfa_info { |
| const char *soc_name; |
| const char *cpu_name; |
| u32 cpu_type; |
| }; |
| |
| static const struct tfa_info tfa_info[] = { |
| { "renesas,r9a07g044l2", "R9A07G044L", RENESAS_CPU_TYPE_R9A07G044L }, |
| }; |
| |
| static const struct tfa_info invalid_tfa_info = { NULL, "(invalid)", 0 }; |
| |
| static const struct tfa_info *get_tfa_info(void) |
| { |
| void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); |
| |
| if (fdt_magic(atf_fdt_blob) == FDT_MAGIC) { |
| unsigned int i; |
| for (i = 0; i < ARRAY_SIZE(tfa_info); i++) { |
| if (!fdt_node_check_compatible(atf_fdt_blob, 0, |
| tfa_info[i].soc_name)) |
| return &tfa_info[i]; |
| } |
| } |
| |
| return &invalid_tfa_info; |
| } |
| |
| const u8 *rzg_get_cpu_name(void) |
| { |
| return get_tfa_info()->cpu_name; |
| } |
| |
| u32 renesas_get_cpu_type(void) |
| { |
| return get_tfa_info()->cpu_type; |
| } |
| |
| u32 renesas_get_cpu_rev_integer(void) |
| { |
| return (readl(SYSC_LSI_DEVID) >> 28) + 1; |
| } |
| |
| u32 renesas_get_cpu_rev_fraction(void) |
| { |
| return 0; |
| } |