4 * Copyright (C) 2012 ARM Ltd.
5 * Author: Marc Zyngier <marc.zyngier@arm.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include <linux/init.h>
21 #include <linux/linkage.h>
23 #include <asm/assembler.h>
24 #include <asm/ptrace.h>
30 ENTRY(__hyp_stub_vectors)
31 ventry el2_sync_invalid // Synchronous EL2t
32 ventry el2_irq_invalid // IRQ EL2t
33 ventry el2_fiq_invalid // FIQ EL2t
34 ventry el2_error_invalid // Error EL2t
36 ventry el2_sync_invalid // Synchronous EL2h
37 ventry el2_irq_invalid // IRQ EL2h
38 ventry el2_fiq_invalid // FIQ EL2h
39 ventry el2_error_invalid // Error EL2h
41 ventry el1_sync // Synchronous 64-bit EL1
42 ventry el1_irq_invalid // IRQ 64-bit EL1
43 ventry el1_fiq_invalid // FIQ 64-bit EL1
44 ventry el1_error_invalid // Error 64-bit EL1
46 ventry el1_sync_invalid // Synchronous 32-bit EL1
47 ventry el1_irq_invalid // IRQ 32-bit EL1
48 ventry el1_fiq_invalid // FIQ 32-bit EL1
49 ventry el1_error_invalid // Error 32-bit EL1
50 ENDPROC(__hyp_stub_vectors)
58 b.ne 2f // Not an HVC trap
60 msr vbar_el2, x0 // Set vbar_el2
62 1: mrs x0, vbar_el2 // Return vbar_el2
66 .macro invalid_vector label
72 invalid_vector el2_sync_invalid
73 invalid_vector el2_irq_invalid
74 invalid_vector el2_fiq_invalid
75 invalid_vector el2_error_invalid
76 invalid_vector el1_sync_invalid
77 invalid_vector el1_irq_invalid
78 invalid_vector el1_fiq_invalid
79 invalid_vector el1_error_invalid
82 * __hyp_set_vectors: Call this after boot to set the initial hypervisor
83 * vectors as part of hypervisor installation. On an SMP system, this should
84 * be called on each CPU.
86 * x0 must be the physical address of the new vector table, and must be
89 * Before calling this, you must check that the stub hypervisor is installed
90 * everywhere, by waiting for any secondary CPUs to be brought up and then
91 * checking that is_hyp_mode_available() is true.
93 * If not, there is a pre-existing hypervisor, some CPUs failed to boot, or
94 * something else went wrong... in such cases, trying to install a new
95 * hypervisor is unlikely to work as desired.
97 * When you call into your shiny new hypervisor, sp_el2 will contain junk,
98 * so you will need to set that to something sensible at the new hypervisor's
99 * initialisation entry point.
102 ENTRY(__hyp_get_vectors)
105 ENTRY(__hyp_set_vectors)
108 ENDPROC(__hyp_get_vectors)
109 ENDPROC(__hyp_set_vectors)