/* * Copyright (C) 2012 ARM Ltd. * Author: Marc Zyngier <marc.zyngier@arm.com> * * 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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 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 <http://www.gnu.org/licenses/>. */ #ifndef __ASM__VIRT_H #define __ASM__VIRT_H /* * The arm64 hcall implementation uses x0 to specify the hcall * number. A value less than HVC_STUB_HCALL_NR indicates a special * hcall, such as set vector. Any other value is handled in a * hypervisor specific way. * * The hypercall is allowed to clobber any of the caller-saved * registers (x0-x18), so it is advisable to use it through the * indirection of a function call (as implemented in hyp-stub.S). */ /* * HVC_SET_VECTORS - Set the value of the vbar_el2 register. * * @x1: Physical address of the new vector table. */ #define HVC_SET_VECTORS 0 /* * HVC_SOFT_RESTART - CPU soft reset, used by the cpu_soft_restart routine. */ #define HVC_SOFT_RESTART 1 /* * HVC_RESET_VECTORS - Restore the vectors to the original HYP stubs */ #define HVC_RESET_VECTORS 2 /* Max number of HYP stub hypercalls */ #define HVC_STUB_HCALL_NR 3 /* Error returned when an invalid stub number is passed into x0 */ #define HVC_STUB_ERR 0xbadca11 #define BOOT_CPU_MODE_EL1 (0xe11) #define BOOT_CPU_MODE_EL2 (0xe12) #ifndef __ASSEMBLY__ #include <asm/ptrace.h> #include <asm/sections.h> #include <asm/sysreg.h> #include <asm/cpufeature.h> /* * __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); void __hyp_reset_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); }Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 13 | 76.47% | 1 | 50.00% |
| Mark Rutland | 4 | 23.53% | 1 | 50.00% |
| Total | 17 | 100.00% | 2 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Jintack Lim | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Suzuki K. Poulose | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 122 | 63.54% | 7 | 50.00% |
| Jintack Lim | 25 | 13.02% | 1 | 7.14% |
| Suzuki K. Poulose | 22 | 11.46% | 1 | 7.14% |
| Geoff Levand | 8 | 4.17% | 2 | 14.29% |
| Mark Rutland | 7 | 3.65% | 1 | 7.14% |
| Matthew Leach | 5 | 2.60% | 1 | 7.14% |
| James Morse | 3 | 1.56% | 1 | 7.14% |
| Total | 192 | 100.00% | 14 | 100.00% |