blob: 7a5df5252dd736e4038e04e40510351820056183 [file] [log] [blame]
* Copyright (C) 2012 ARM Ltd.
* Author: Marc Zyngier <>
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <>.
#ifndef __ASM__VIRT_H
#define __ASM__VIRT_H
#define BOOT_CPU_MODE_EL1 (0xe11)
#define BOOT_CPU_MODE_EL2 (0xe12)
#ifndef __ASSEMBLY__
* __boot_cpu_mode records what mode CPUs were booted in.
* A correctly-implemented bootloader must start all CPUs in the same mode:
* In this case, both 32bit halves of __boot_cpu_mode will contain the
* same value (either 0 if booted in EL1, BOOT_CPU_MODE_EL2 if booted in EL2).
* Should the bootloader fail to do this, the two values will be different.
* This allows the kernel to flag an error when the secondaries have come up.
extern u32 __boot_cpu_mode[2];
void __hyp_set_vectors(phys_addr_t phys_vector_base);
phys_addr_t __hyp_get_vectors(void);
/* Reports the availability of HYP mode */
static inline bool is_hyp_mode_available(void)
return (__boot_cpu_mode[0] == BOOT_CPU_MODE_EL2 &&
__boot_cpu_mode[1] == BOOT_CPU_MODE_EL2);
/* Check if the bootloader has booted CPUs in different modes */
static inline bool is_hyp_mode_mismatched(void)
return __boot_cpu_mode[0] != __boot_cpu_mode[1];
/* The section containing the hypervisor text */
extern char __hyp_text_start[];
extern char __hyp_text_end[];
#endif /* __ASSEMBLY__ */
#endif /* ! __ASM__VIRT_H */