LXR linux/arch/arm64/kernel/image-vars.h

   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_dcache_clean_poc = __pi_dcache_clean_poc;
  39
  40#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
  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/* Alternative callbacks for init-time patching of nVHE hyp code. */
  65KVM_NVHE_ALIAS(kvm_patch_vector_branch);
  66KVM_NVHE_ALIAS(kvm_update_va_mask);
  67KVM_NVHE_ALIAS(kvm_get_kimage_voffset);
  68KVM_NVHE_ALIAS(kvm_compute_final_ctr_el0);
  69
  70/* Global kernel state accessed by nVHE hyp code. */
  71KVM_NVHE_ALIAS(kvm_vgic_global_state);
  72
  73/* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */
  74KVM_NVHE_ALIAS(nvhe_hyp_panic_handler);
  75
  76/* Vectors installed by hyp-init on reset HVC. */
  77KVM_NVHE_ALIAS(__hyp_stub_vectors);
  78
  79/* Kernel symbol used by icache_is_vpipt(). */
  80KVM_NVHE_ALIAS(__icache_flags);
  81
  82/* Kernel symbols needed for cpus_have_final/const_caps checks. */
  83KVM_NVHE_ALIAS(arm64_const_caps_ready);
  84KVM_NVHE_ALIAS(cpu_hwcap_keys);
  85
  86/* Static keys which are set if a vGIC trap should be handled in hyp. */
  87KVM_NVHE_ALIAS(vgic_v2_cpuif_trap);
  88KVM_NVHE_ALIAS(vgic_v3_cpuif_trap);
  89
  90/* Static key checked in pmr_sync(). */
  91#ifdef CONFIG_ARM64_PSEUDO_NMI
  92KVM_NVHE_ALIAS(gic_pmr_sync);
  93/* Static key checked in GIC_PRIO_IRQOFF. */
  94KVM_NVHE_ALIAS(gic_nonsecure_priorities);
  95#endif
  96
  97/* EL2 exception handling */
  98KVM_NVHE_ALIAS(__start___kvm_ex_table);
  99KVM_NVHE_ALIAS(__stop___kvm_ex_table);
 100
 101/* Array containing bases of nVHE per-CPU memory regions. */
 102KVM_NVHE_ALIAS(kvm_arm_hyp_percpu_base);
 103
 104/* PMU available static key */
 105KVM_NVHE_ALIAS(kvm_arm_pmu_available);
 106
 107/* Position-independent library routines */
 108KVM_NVHE_ALIAS_HYP(clear_page, __pi_clear_page);
 109KVM_NVHE_ALIAS_HYP(copy_page, __pi_copy_page);
 110KVM_NVHE_ALIAS_HYP(memcpy, __pi_memcpy);
 111KVM_NVHE_ALIAS_HYP(memset, __pi_memset);
 112
 113#ifdef CONFIG_KASAN
 114KVM_NVHE_ALIAS_HYP(__memcpy, __pi_memcpy);
 115KVM_NVHE_ALIAS_HYP(__memset, __pi_memset);
 116#endif
 117
 118/* Kernel memory sections */
 119KVM_NVHE_ALIAS(__start_rodata);
 120KVM_NVHE_ALIAS(__end_rodata);
 121KVM_NVHE_ALIAS(__bss_start);
 122KVM_NVHE_ALIAS(__bss_stop);
 123
 124/* Hyp memory sections */
 125KVM_NVHE_ALIAS(__hyp_idmap_text_start);
 126KVM_NVHE_ALIAS(__hyp_idmap_text_end);
 127KVM_NVHE_ALIAS(__hyp_text_start);
 128KVM_NVHE_ALIAS(__hyp_text_end);
 129KVM_NVHE_ALIAS(__hyp_bss_start);
 130KVM_NVHE_ALIAS(__hyp_bss_end);
 131KVM_NVHE_ALIAS(__hyp_rodata_start);
 132KVM_NVHE_ALIAS(__hyp_rodata_end);
 133
 134/* pKVM static key */
 135KVM_NVHE_ALIAS(kvm_protected_mode_initialized);
 136
 137#endif /* CONFIG_KVM */
 138
 139#endif /* __ARM64_KERNEL_IMAGE_VARS_H */
 140