8f34c2760d
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp: Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem. sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately. sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades. sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for fastboot. Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Interface for managing mitigations for Spectre vulnerabilities.
|
|
*
|
|
* Copyright (C) 2020 Google LLC
|
|
* Author: Will Deacon <will@kernel.org>
|
|
*/
|
|
|
|
#ifndef __ASM_SPECTRE_H
|
|
#define __ASM_SPECTRE_H
|
|
|
|
#define BP_HARDEN_EL2_SLOTS 4
|
|
#define __BP_HARDEN_HYP_VECS_SZ ((BP_HARDEN_EL2_SLOTS - 1) * SZ_2K)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/percpu.h>
|
|
|
|
#include <asm/cpufeature.h>
|
|
#include <asm/virt.h>
|
|
|
|
/* Watch out, ordering is important here. */
|
|
enum mitigation_state {
|
|
SPECTRE_UNAFFECTED,
|
|
SPECTRE_MITIGATED,
|
|
SPECTRE_VULNERABLE,
|
|
};
|
|
|
|
struct task_struct;
|
|
|
|
/*
|
|
* Note: the order of this enum corresponds to __bp_harden_hyp_vecs and
|
|
* we rely on having the direct vectors first.
|
|
*/
|
|
enum arm64_hyp_spectre_vector {
|
|
/*
|
|
* Take exceptions directly to __kvm_hyp_vector. This must be
|
|
* 0 so that it used by default when mitigations are not needed.
|
|
*/
|
|
HYP_VECTOR_DIRECT,
|
|
|
|
/*
|
|
* Bounce via a slot in the hypervisor text mapping of
|
|
* __bp_harden_hyp_vecs, which contains an SMC call.
|
|
*/
|
|
HYP_VECTOR_SPECTRE_DIRECT,
|
|
|
|
/*
|
|
* Bounce via a slot in a special mapping of __bp_harden_hyp_vecs
|
|
* next to the idmap page.
|
|
*/
|
|
HYP_VECTOR_INDIRECT,
|
|
|
|
/*
|
|
* Bounce via a slot in a special mapping of __bp_harden_hyp_vecs
|
|
* next to the idmap page, which contains an SMC call.
|
|
*/
|
|
HYP_VECTOR_SPECTRE_INDIRECT,
|
|
};
|
|
|
|
typedef void (*bp_hardening_cb_t)(void);
|
|
|
|
struct bp_hardening_data {
|
|
enum arm64_hyp_spectre_vector slot;
|
|
bp_hardening_cb_t fn;
|
|
};
|
|
|
|
DECLARE_PER_CPU_READ_MOSTLY(struct bp_hardening_data, bp_hardening_data);
|
|
|
|
/* Called during entry so must be __always_inline */
|
|
static __always_inline void arm64_apply_bp_hardening(void)
|
|
{
|
|
struct bp_hardening_data *d;
|
|
|
|
if (!cpus_have_const_cap(ARM64_SPECTRE_V2))
|
|
return;
|
|
|
|
d = this_cpu_ptr(&bp_hardening_data);
|
|
if (d->fn)
|
|
d->fn();
|
|
}
|
|
|
|
enum mitigation_state arm64_get_spectre_v2_state(void);
|
|
bool has_spectre_v2(const struct arm64_cpu_capabilities *cap, int scope);
|
|
void spectre_v2_enable_mitigation(const struct arm64_cpu_capabilities *__unused);
|
|
|
|
bool has_spectre_v3a(const struct arm64_cpu_capabilities *cap, int scope);
|
|
void spectre_v3a_enable_mitigation(const struct arm64_cpu_capabilities *__unused);
|
|
|
|
enum mitigation_state arm64_get_spectre_v4_state(void);
|
|
bool has_spectre_v4(const struct arm64_cpu_capabilities *cap, int scope);
|
|
void spectre_v4_enable_mitigation(const struct arm64_cpu_capabilities *__unused);
|
|
void spectre_v4_enable_task_mitigation(struct task_struct *tsk);
|
|
|
|
enum mitigation_state arm64_get_meltdown_state(void);
|
|
enum mitigation_state arm64_get_spectre_bhb_state(void);
|
|
bool is_spectre_bhb_affected(const struct arm64_cpu_capabilities *entry, int scope);
|
|
u8 spectre_bhb_loop_affected(int scope);
|
|
void spectre_bhb_enable_mitigation(const struct arm64_cpu_capabilities *__unused);
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* __ASM_SPECTRE_H */
|