| .. | .. |
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| 1 | +/* SPDX-License-Identifier: GPL-2.0-only */ |
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| 1 | 2 | /* |
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| 2 | 3 | * Hibernate low-level support |
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| 3 | 4 | * |
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| 4 | 5 | * Copyright (C) 2016 ARM Ltd. |
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| 5 | 6 | * Author: James Morse <james.morse@arm.com> |
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| 6 | | - * |
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| 7 | | - * This program is free software; you can redistribute it and/or modify |
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| 8 | | - * it under the terms of the GNU General Public License version 2 as |
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| 9 | | - * published by the Free Software Foundation. |
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| 10 | | - * |
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| 11 | | - * This program is distributed in the hope that it will be useful, |
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| 12 | | - * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | | - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | | - * GNU General Public License for more details. |
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| 15 | | - * |
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| 16 | | - * You should have received a copy of the GNU General Public License |
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| 17 | | - * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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| 18 | 7 | */ |
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| 19 | 8 | #include <linux/linkage.h> |
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| 20 | 9 | #include <linux/errno.h> |
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| .. | .. |
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| 33 | 22 | * Even switching to our copied tables will cause a changed output address at |
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| 34 | 23 | * each stage of the walk. |
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| 35 | 24 | */ |
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| 36 | | -.macro break_before_make_ttbr_switch zero_page, page_table, tmp |
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| 25 | +.macro break_before_make_ttbr_switch zero_page, page_table, tmp, tmp2 |
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| 37 | 26 | phys_to_ttbr \tmp, \zero_page |
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| 38 | 27 | msr ttbr1_el1, \tmp |
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| 39 | 28 | isb |
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| 40 | 29 | tlbi vmalle1 |
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| 41 | 30 | dsb nsh |
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| 42 | 31 | phys_to_ttbr \tmp, \page_table |
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| 32 | + offset_ttbr1 \tmp, \tmp2 |
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| 43 | 33 | msr ttbr1_el1, \tmp |
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| 44 | 34 | isb |
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| 45 | 35 | .endm |
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| .. | .. |
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| 75 | 65 | * x5: physical address of a zero page that remains zero after resume |
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| 76 | 66 | */ |
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| 77 | 67 | .pushsection ".hibernate_exit.text", "ax" |
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| 78 | | -ENTRY(swsusp_arch_suspend_exit) |
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| 68 | +SYM_CODE_START(swsusp_arch_suspend_exit) |
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| 79 | 69 | /* |
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| 80 | 70 | * We execute from ttbr0, change ttbr1 to our copied linear map tables |
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| 81 | 71 | * with a break-before-make via the zero page |
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| 82 | 72 | */ |
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| 83 | | - break_before_make_ttbr_switch x5, x0, x6 |
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| 73 | + break_before_make_ttbr_switch x5, x0, x6, x8 |
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| 84 | 74 | |
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| 85 | 75 | mov x21, x1 |
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| 86 | 76 | mov x30, x2 |
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| .. | .. |
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| 111 | 101 | dsb ish /* wait for PoU cleaning to finish */ |
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| 112 | 102 | |
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| 113 | 103 | /* switch to the restored kernels page tables */ |
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| 114 | | - break_before_make_ttbr_switch x25, x21, x6 |
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| 104 | + break_before_make_ttbr_switch x25, x21, x6, x8 |
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| 115 | 105 | |
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| 116 | 106 | ic ialluis |
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| 117 | 107 | dsb ish |
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| .. | .. |
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| 120 | 110 | cbz x24, 3f /* Do we need to re-initialise EL2? */ |
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| 121 | 111 | hvc #0 |
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| 122 | 112 | 3: ret |
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| 123 | | - |
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| 124 | | - .ltorg |
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| 125 | | -ENDPROC(swsusp_arch_suspend_exit) |
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| 113 | +SYM_CODE_END(swsusp_arch_suspend_exit) |
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| 126 | 114 | |
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| 127 | 115 | /* |
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| 128 | 116 | * Restore the hyp stub. |
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| .. | .. |
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| 131 | 119 | * |
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| 132 | 120 | * x24: The physical address of __hyp_stub_vectors |
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| 133 | 121 | */ |
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| 134 | | -el1_sync: |
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| 122 | +SYM_CODE_START_LOCAL(el1_sync) |
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| 135 | 123 | msr vbar_el2, x24 |
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| 136 | 124 | eret |
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| 137 | | -ENDPROC(el1_sync) |
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| 125 | +SYM_CODE_END(el1_sync) |
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| 138 | 126 | |
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| 139 | 127 | .macro invalid_vector label |
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| 140 | | -\label: |
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| 128 | +SYM_CODE_START_LOCAL(\label) |
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| 141 | 129 | b \label |
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| 142 | | -ENDPROC(\label) |
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| 130 | +SYM_CODE_END(\label) |
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| 143 | 131 | .endm |
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| 144 | 132 | |
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| 145 | 133 | invalid_vector el2_sync_invalid |
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| .. | .. |
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| 153 | 141 | |
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| 154 | 142 | /* el2 vectors - switch el2 here while we restore the memory image. */ |
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| 155 | 143 | .align 11 |
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| 156 | | -ENTRY(hibernate_el2_vectors) |
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| 144 | +SYM_CODE_START(hibernate_el2_vectors) |
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| 157 | 145 | ventry el2_sync_invalid // Synchronous EL2t |
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| 158 | 146 | ventry el2_irq_invalid // IRQ EL2t |
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| 159 | 147 | ventry el2_fiq_invalid // FIQ EL2t |
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| .. | .. |
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| 173 | 161 | ventry el1_irq_invalid // IRQ 32-bit EL1 |
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| 174 | 162 | ventry el1_fiq_invalid // FIQ 32-bit EL1 |
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| 175 | 163 | ventry el1_error_invalid // Error 32-bit EL1 |
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| 176 | | -END(hibernate_el2_vectors) |
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| 164 | +SYM_CODE_END(hibernate_el2_vectors) |
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| 177 | 165 | |
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| 178 | 166 | .popsection |
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