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 debug-sr.c (not yet compiled with nVHE build rules). */ 67 KVM_NVHE_ALIAS(__kvm_get_mdcr_el2); 68 69 /* Symbols defined in entry.S (not yet compiled with nVHE build rules). */ 70 KVM_NVHE_ALIAS(__guest_exit); 71 KVM_NVHE_ALIAS(abort_guest_exit_end); 72 KVM_NVHE_ALIAS(abort_guest_exit_start); 73 74 /* Symbols defined in switch.c (not yet compiled with nVHE build rules). */ 75 KVM_NVHE_ALIAS(__kvm_vcpu_run_nvhe); 76 KVM_NVHE_ALIAS(hyp_panic); 77 78 /* Symbols defined in sysreg-sr.c (not yet compiled with nVHE build rules). */ 79 KVM_NVHE_ALIAS(__kvm_enable_ssbs); 80 81 /* Symbols defined in timer-sr.c (not yet compiled with nVHE build rules). */ 82 KVM_NVHE_ALIAS(__kvm_timer_set_cntvoff); 83 84 /* Symbols defined in vgic-v3-sr.c (not yet compiled with nVHE build rules). */ 85 KVM_NVHE_ALIAS(__vgic_v3_get_ich_vtr_el2); 86 KVM_NVHE_ALIAS(__vgic_v3_init_lrs); 87 KVM_NVHE_ALIAS(__vgic_v3_read_vmcr); 88 KVM_NVHE_ALIAS(__vgic_v3_restore_aprs); 89 KVM_NVHE_ALIAS(__vgic_v3_save_aprs); 90 KVM_NVHE_ALIAS(__vgic_v3_write_vmcr); 91 92 /* Alternative callbacks for init-time patching of nVHE hyp code. */ 93 KVM_NVHE_ALIAS(arm64_enable_wa2_handling); 94 KVM_NVHE_ALIAS(kvm_patch_vector_branch); 95 KVM_NVHE_ALIAS(kvm_update_va_mask); 96 97 /* Global kernel state accessed by nVHE hyp code. */ 98 KVM_NVHE_ALIAS(arm64_ssbd_callback_required); 99 KVM_NVHE_ALIAS(kvm_host_data); 100 101 /* Kernel constant needed to compute idmap addresses. */ 102 KVM_NVHE_ALIAS(kimage_voffset); 103 104 /* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */ 105 KVM_NVHE_ALIAS(panic); 106 107 /* Vectors installed by hyp-init on reset HVC. */ 108 KVM_NVHE_ALIAS(__hyp_stub_vectors); 109 110 /* IDMAP TCR_EL1.T0SZ as computed by the EL1 init code */ 111 KVM_NVHE_ALIAS(idmap_t0sz); 112 113 /* Kernel symbol used by icache_is_vpipt(). */ 114 KVM_NVHE_ALIAS(__icache_flags); 115 116 /* Kernel symbols needed for cpus_have_final/const_caps checks. */ 117 KVM_NVHE_ALIAS(arm64_const_caps_ready); 118 KVM_NVHE_ALIAS(cpu_hwcap_keys); 119 KVM_NVHE_ALIAS(cpu_hwcaps); 120 121 #endif /* CONFIG_KVM */ 122 123 #endif /* __ARM64_KERNEL_IMAGE_VARS_H */ 124