LXR linux/arch/arm64/kernel/crash

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (C) Linaro.
   4 * Copyright (C) Huawei Futurewei Technologies.
   5 */
   6
   7#include <linux/crash_core.h>
   8#include <asm/cpufeature.h>
   9#include <asm/memory.h>
  10#include <asm/pgtable-hwdef.h>
  11
  12static inline u64 get_tcr_el1_t1sz(void);
  13
  14static inline u64 get_tcr_el1_t1sz(void)
  15{
  16        return (read_sysreg(tcr_el1) & TCR_T1SZ_MASK) >> TCR_T1SZ_OFFSET;
  17}
  18
  19void arch_crash_save_vmcoreinfo(void)
  20{
  21        VMCOREINFO_NUMBER(VA_BITS);
  22        /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
  23        vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
  24                                                kimage_voffset);
  25        vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
  26                                                PHYS_OFFSET);
  27        vmcoreinfo_append_str("NUMBER(TCR_EL1_T1SZ)=0x%llx\n",
  28                                                get_tcr_el1_t1sz());
  29        vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
  30        vmcoreinfo_append_str("NUMBER(KERNELPACMASK)=0x%llx\n",
  31                                                system_supports_address_auth() ?
  32                                                ptrauth_kernel_pac_mask() : 0);
  33}
  34