1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Linker script variables to be set after section resolution, as 4 * ld.lld does not like variables assigned before SECTIONS is processed. 5 */ 6 #ifndef __ARM64_KERNEL_IMAGE_VARS_H 7 #define __ARM64_KERNEL_IMAGE_VARS_H 8 9 #ifndef LINKER_SCRIPT 10 #error This file should only be included in vmlinux.lds.S 11 #endif 12 13 #ifdef CONFIG_EFI 14 15 __efistub_kernel_size = _edata - _text; 16 __efistub_primary_entry_offset = primary_entry - _text; 17 18 19 /* 20 * The EFI stub has its own symbol namespace prefixed by __efistub_, to 21 * isolate it from the kernel proper. The following symbols are legally 22 * accessed by the stub, so provide some aliases to make them accessible. 23 * Only include data symbols here, or text symbols of functions that are 24 * guaranteed to be safe when executed at another offset than they were 25 * linked at. The routines below are all implemented in assembler in a 26 * position independent manner 27 */ 28 __efistub_memcmp = __pi_memcmp; 29 __efistub_memchr = __pi_memchr; 30 __efistub_memcpy = __pi_memcpy; 31 __efistub_memmove = __pi_memmove; 32 __efistub_memset = __pi_memset; 33 __efistub_strlen = __pi_strlen; 34 __efistub_strnlen = __pi_strnlen; 35 __efistub_strcmp = __pi_strcmp; 36 __efistub_strncmp = __pi_strncmp; 37 __efistub_strrchr = __pi_strrchr; 38 __efistub___clean_dcache_area_poc = __pi___clean_dcache_area_poc; 39 40 #ifdef CONFIG_KASAN 41 __efistub___memcpy = __pi_memcpy; 42 __efistub___memmove = __pi_memmove; 43 __efistub___memset = __pi_memset; 44 #endif 45 46 __efistub__text = _text; 47 __efistub__end = _end; 48 __efistub__edata = _edata; 49 __efistub_screen_info = screen_info; 50 __efistub__ctype = _ctype; 51 52 #endif 53 54 #ifdef CONFIG_KVM 55 56 /* 57 * KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_, to 58 * separate it from the kernel proper. The following symbols are legally 59 * accessed by it, therefore provide aliases to make them linkable. 60 * Do not include symbols which may not be safely accessed under hypervisor 61 * memory mappings. 62 */ 63 64 #define KVM_NVHE_ALIAS(sym) __kvm_nvhe_##sym = sym; 65 66 /* Symbols defined in aarch32.c (not yet compiled with nVHE build rules). */ 67 KVM_NVHE_ALIAS(kvm_skip_instr32); 68 69 /* Symbols defined in entry.S (not yet compiled with nVHE build rules). */ 70 KVM_NVHE_ALIAS(__guest_enter); 71 KVM_NVHE_ALIAS(__guest_exit); 72 KVM_NVHE_ALIAS(abort_guest_exit_end); 73 KVM_NVHE_ALIAS(abort_guest_exit_start); 74 75 /* Symbols defined in fpsimd.S (not yet compiled with nVHE build rules). */ 76 KVM_NVHE_ALIAS(__fpsimd_restore_state); 77 KVM_NVHE_ALIAS(__fpsimd_save_state); 78 79 /* Symbols defined in vgic-v2-cpuif-proxy.c (not yet compiled with nVHE build rules). */ 80 KVM_NVHE_ALIAS(__vgic_v2_perform_cpuif_access); 81 82 /* Symbols defined in vgic-v3-sr.c (not yet compiled with nVHE build rules). */ 83 KVM_NVHE_ALIAS(__vgic_v3_activate_traps); 84 KVM_NVHE_ALIAS(__vgic_v3_deactivate_traps); 85 KVM_NVHE_ALIAS(__vgic_v3_get_ich_vtr_el2); 86 KVM_NVHE_ALIAS(__vgic_v3_init_lrs); 87 KVM_NVHE_ALIAS(__vgic_v3_perform_cpuif_access); 88 KVM_NVHE_ALIAS(__vgic_v3_read_vmcr); 89 KVM_NVHE_ALIAS(__vgic_v3_restore_aprs); 90 KVM_NVHE_ALIAS(__vgic_v3_restore_state); 91 KVM_NVHE_ALIAS(__vgic_v3_save_aprs); 92 KVM_NVHE_ALIAS(__vgic_v3_save_state); 93 KVM_NVHE_ALIAS(__vgic_v3_write_vmcr); 94 95 /* Alternative callbacks for init-time patching of nVHE hyp code. */ 96 KVM_NVHE_ALIAS(arm64_enable_wa2_handling); 97 KVM_NVHE_ALIAS(kvm_patch_vector_branch); 98 KVM_NVHE_ALIAS(kvm_update_va_mask); 99 100 /* Global kernel state accessed by nVHE hyp code. */ 101 KVM_NVHE_ALIAS(arm64_ssbd_callback_required); 102 KVM_NVHE_ALIAS(kvm_host_data); 103 KVM_NVHE_ALIAS(kvm_vgic_global_state); 104 105 /* Kernel constant needed to compute idmap addresses. */ 106 KVM_NVHE_ALIAS(kimage_voffset); 107 108 /* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */ 109 KVM_NVHE_ALIAS(__hyp_panic_string); 110 KVM_NVHE_ALIAS(panic); 111 112 /* Vectors installed by hyp-init on reset HVC. */ 113 KVM_NVHE_ALIAS(__hyp_stub_vectors); 114 115 /* IDMAP TCR_EL1.T0SZ as computed by the EL1 init code */ 116 KVM_NVHE_ALIAS(idmap_t0sz); 117 118 /* Kernel symbol used by icache_is_vpipt(). */ 119 KVM_NVHE_ALIAS(__icache_flags); 120 121 /* Kernel symbols needed for cpus_have_final/const_caps checks. */ 122 KVM_NVHE_ALIAS(arm64_const_caps_ready); 123 KVM_NVHE_ALIAS(cpu_hwcap_keys); 124 KVM_NVHE_ALIAS(cpu_hwcaps); 125 126 /* Static keys which are set if a vGIC trap should be handled in hyp. */ 127 KVM_NVHE_ALIAS(vgic_v2_cpuif_trap); 128 KVM_NVHE_ALIAS(vgic_v3_cpuif_trap); 129 130 /* Static key checked in pmr_sync(). */ 131 #ifdef CONFIG_ARM64_PSEUDO_NMI 132 KVM_NVHE_ALIAS(gic_pmr_sync); 133 #endif 134 135 #endif /* CONFIG_KVM */ 136 137 #endif /* __ARM64_KERNEL_IMAGE_VARS_H */ 138