diff options
Diffstat (limited to 'arch/arm64/include/asm/virt.h')
| -rw-r--r-- | arch/arm64/include/asm/virt.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/virt.h b/arch/arm64/include/asm/virt.h index 9f22dd607958..06e6a5238c4c 100644 --- a/arch/arm64/include/asm/virt.h +++ b/arch/arm64/include/asm/virt.h @@ -18,6 +18,22 @@ #ifndef __ASM__VIRT_H #define __ASM__VIRT_H +/* + * The arm64 hcall implementation uses x0 to specify the hcall type. A value + * less than 0xfff indicates a special hcall, such as get/set vector. + * Any other value is used as a pointer to the function to call. + */ + +/* HVC_GET_VECTORS - Return the value of the vbar_el2 register. */ +#define HVC_GET_VECTORS 0 + +/* + * HVC_SET_VECTORS - Set the value of the vbar_el2 register. + * + * @x1: Physical address of the new vector table. + */ +#define HVC_SET_VECTORS 1 + #define BOOT_CPU_MODE_EL1 (0xe11) #define BOOT_CPU_MODE_EL2 (0xe12) |