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 PROVIDE(__efistub_kernel_size = _edata - _text); 14 PROVIDE(__efistub_primary_entry_offset = primary_entry - _text); 15 16 /* 17 * The EFI stub has its own symbol namespace prefixed by __efistub_, to 18 * isolate it from the kernel proper. The following symbols are legally 19 * accessed by the stub, so provide some aliases to make them accessible. 20 * Only include data symbols here, or text symbols of functions that are 21 * guaranteed to be safe when executed at another offset than they were 22 * linked at. The routines below are all implemented in assembler in a 23 * position independent manner 24 */ 25 PROVIDE(__efistub_memcmp = __pi_memcmp); 26 PROVIDE(__efistub_memchr = __pi_memchr); 27 PROVIDE(__efistub_strlen = __pi_strlen); 28 PROVIDE(__efistub_strnlen = __pi_strnlen); 29 PROVIDE(__efistub_strcmp = __pi_strcmp); 30 PROVIDE(__efistub_strncmp = __pi_strncmp); 31 PROVIDE(__efistub_strrchr = __pi_strrchr); 32 PROVIDE(__efistub_dcache_clean_poc = __pi_dcache_clean_poc); 33 34 PROVIDE(__efistub__text = _text); 35 PROVIDE(__efistub__end = _end); 36 PROVIDE(__efistub__edata = _edata); 37 PROVIDE(__efistub_screen_info = screen_info); 38 PROVIDE(__efistub__ctype = _ctype); 39 40 PROVIDE(__pi___memcpy = __pi_memcpy); 41 PROVIDE(__pi___memmove = __pi_memmove); 42 PROVIDE(__pi___memset = __pi_memset); 43 44 #ifdef CONFIG_KVM 45 46 /* 47 * KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_, to 48 * separate it from the kernel proper. The following symbols are legally 49 * accessed by it, therefore provide aliases to make them linkable. 50 * Do not include symbols which may not be safely accessed under hypervisor 51 * memory mappings. 52 */ 53 54 /* Alternative callbacks for init-time patching of nVHE hyp code. */ 55 KVM_NVHE_ALIAS(kvm_patch_vector_branch); 56 KVM_NVHE_ALIAS(kvm_update_va_mask); 57 KVM_NVHE_ALIAS(kvm_get_kimage_voffset); 58 KVM_NVHE_ALIAS(kvm_compute_final_ctr_el0); 59 KVM_NVHE_ALIAS(spectre_bhb_patch_loop_iter); 60 KVM_NVHE_ALIAS(spectre_bhb_patch_loop_mitigation_enable); 61 KVM_NVHE_ALIAS(spectre_bhb_patch_wa3); 62 KVM_NVHE_ALIAS(spectre_bhb_patch_clearbhb); 63 KVM_NVHE_ALIAS(alt_cb_patch_nops); 64 65 /* Global kernel state accessed by nVHE hyp code. */ 66 KVM_NVHE_ALIAS(kvm_vgic_global_state); 67 68 /* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */ 69 KVM_NVHE_ALIAS(nvhe_hyp_panic_handler); 70 71 /* Vectors installed by hyp-init on reset HVC. */ 72 KVM_NVHE_ALIAS(__hyp_stub_vectors); 73 74 /* Kernel symbol used by icache_is_vpipt(). */ 75 KVM_NVHE_ALIAS(__icache_flags); 76 77 /* VMID bits set by the KVM VMID allocator */ 78 KVM_NVHE_ALIAS(kvm_arm_vmid_bits); 79 80 /* Static keys which are set if a vGIC trap should be handled in hyp. */ 81 KVM_NVHE_ALIAS(vgic_v2_cpuif_trap); 82 KVM_NVHE_ALIAS(vgic_v3_cpuif_trap); 83 84 /* Static key checked in pmr_sync(). */ 85 #ifdef CONFIG_ARM64_PSEUDO_NMI 86 KVM_NVHE_ALIAS(gic_pmr_sync); 87 /* Static key checked in GIC_PRIO_IRQOFF. */ 88 KVM_NVHE_ALIAS(gic_nonsecure_priorities); 89 #endif 90 91 /* EL2 exception handling */ 92 KVM_NVHE_ALIAS(__start___kvm_ex_table); 93 KVM_NVHE_ALIAS(__stop___kvm_ex_table); 94 95 /* Array containing bases of nVHE per-CPU memory regions. */ 96 KVM_NVHE_ALIAS(kvm_arm_hyp_percpu_base); 97 98 /* PMU available static key */ 99 #ifdef CONFIG_HW_PERF_EVENTS 100 KVM_NVHE_ALIAS(kvm_arm_pmu_available); 101 #endif 102 103 /* Position-independent library routines */ 104 KVM_NVHE_ALIAS_HYP(clear_page, __pi_clear_page); 105 KVM_NVHE_ALIAS_HYP(copy_page, __pi_copy_page); 106 KVM_NVHE_ALIAS_HYP(memcpy, __pi_memcpy); 107 KVM_NVHE_ALIAS_HYP(memset, __pi_memset); 108 109 #ifdef CONFIG_KASAN 110 KVM_NVHE_ALIAS_HYP(__memcpy, __pi_memcpy); 111 KVM_NVHE_ALIAS_HYP(__memset, __pi_memset); 112 #endif 113 114 /* Kernel memory sections */ 115 KVM_NVHE_ALIAS(__start_rodata); 116 KVM_NVHE_ALIAS(__end_rodata); 117 KVM_NVHE_ALIAS(__bss_start); 118 KVM_NVHE_ALIAS(__bss_stop); 119 120 /* Hyp memory sections */ 121 KVM_NVHE_ALIAS(__hyp_idmap_text_start); 122 KVM_NVHE_ALIAS(__hyp_idmap_text_end); 123 KVM_NVHE_ALIAS(__hyp_text_start); 124 KVM_NVHE_ALIAS(__hyp_text_end); 125 KVM_NVHE_ALIAS(__hyp_bss_start); 126 KVM_NVHE_ALIAS(__hyp_bss_end); 127 KVM_NVHE_ALIAS(__hyp_rodata_start); 128 KVM_NVHE_ALIAS(__hyp_rodata_end); 129 130 /* pKVM static key */ 131 KVM_NVHE_ALIAS(kvm_protected_mode_initialized); 132 133 #endif /* CONFIG_KVM */ 134 135 #endif /* __ARM64_KERNEL_IMAGE_VARS_H */ 136