Add a couple of functions to look up the segment and part name using SIP calls. These will be used to print more accurate CPU information in print_cpuinfo().
Signed-off-by: David Lechner <[email protected]> --- arch/arm/mach-mediatek/cpu.c | 55 ++++++++++++++++++++++++++++++++++++++++++++ arch/arm/mach-mediatek/cpu.h | 14 +++++++++++ 2 files changed, 69 insertions(+) diff --git a/arch/arm/mach-mediatek/cpu.c b/arch/arm/mach-mediatek/cpu.c index 8e8bc4f9cea..56a41e42df6 100644 --- a/arch/arm/mach-mediatek/cpu.c +++ b/arch/arm/mach-mediatek/cpu.c @@ -8,6 +8,11 @@ #include <init.h> #include <wdt.h> #include <dm/uclass-internal.h> +#include <linux/arm-smccc.h> +#include <linux/types.h> + +#define MTK_SIP_PLAT_BINFO ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_SIP, 0x529) int arch_cpu_init(void) { @@ -21,3 +26,53 @@ void enable_caches(void) /* Enable D-cache. I-cache is already enabled in start.S */ dcache_enable(); } + +/** + * mediatek_sip_part_name - get the part name + * + * Retrieve the part name of platform description. + * + * This only applicable to SoCs that support SIP plat binfo SMC call. + * + * Returns: the part name or 0 if error or no part name + */ +u32 mediatek_sip_part_name(void) +{ + if (CONFIG_IS_ENABLED(TARGET_MT8188) || CONFIG_IS_ENABLED(TARGET_MT8189) || + CONFIG_IS_ENABLED(TARGET_MT8195) || CONFIG_IS_ENABLED(TARGET_MT8365)) { + struct arm_smccc_res res __maybe_unused; + + arm_smccc_smc(MTK_SIP_PLAT_BINFO, 0, 0, 0, 0, 0, 0, 0, &res); + if (res.a0) + return 0; + + return res.a1; + } + + return 0; +} + +/** + * mediatek_sip_segment_name - get the segment name + * + * Retrieve the segment name of platform description. + * + * This only applicable to SoCs that support SIP plat binfo SMC call. + * + * Returns: the segment name or 0 if error or no segment name + */ +u32 mediatek_sip_segment_name(void) +{ + if (CONFIG_IS_ENABLED(TARGET_MT8188) || CONFIG_IS_ENABLED(TARGET_MT8189) || + CONFIG_IS_ENABLED(TARGET_MT8195) || CONFIG_IS_ENABLED(TARGET_MT8365)) { + struct arm_smccc_res res __maybe_unused; + + arm_smccc_smc(MTK_SIP_PLAT_BINFO, 1, 0, 0, 0, 0, 0, 0, &res); + if (res.a0) + return 0; + + return res.a1; + } + + return 0; +} diff --git a/arch/arm/mach-mediatek/cpu.h b/arch/arm/mach-mediatek/cpu.h new file mode 100644 index 00000000000..768284e487f --- /dev/null +++ b/arch/arm/mach-mediatek/cpu.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2026 MediaTek Inc. + */ + +#ifndef _MACH_MEDIATEK_CPU_H_ +#define _MACH_MEDIATEK_CPU_H_ + +#include <linux/types.h> + +u32 mediatek_sip_segment_name(void); +u32 mediatek_sip_part_name(void); + +#endif /* _MACH_MEDIATEK_CPU_H_ */ -- 2.43.0
