arm64/kernel/crash_core.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Copyright (C) Linaro.
0004  * Copyright (C) Huawei Futurewei Technologies.
0005  */
0006
0007 #include <linux/crash_core.h>
0008 #include <asm/cpufeature.h>
0009 #include <asm/memory.h>
0010 #include <asm/pgtable-hwdef.h>
0011
0012 static inline u64 get_tcr_el1_t1sz(void);
0013
0014 static inline u64 get_tcr_el1_t1sz(void)
0015 {
0016     return (read_sysreg(tcr_el1) & TCR_T1SZ_MASK) >> TCR_T1SZ_OFFSET;
0017 }
0018
0019 void arch_crash_save_vmcoreinfo(void)
0020 {
0021     VMCOREINFO_NUMBER(VA_BITS);
0022     /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
0023     vmcoreinfo_append_str("NUMBER(MODULES_VADDR)=0x%lx\n", MODULES_VADDR);
0024     vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END);
0025     vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START);
0026     vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END);
0027     vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START);
0028     vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END);
0029     vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
0030                         kimage_voffset);
0031     vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
0032                         PHYS_OFFSET);
0033     vmcoreinfo_append_str("NUMBER(TCR_EL1_T1SZ)=0x%llx\n",
0034                         get_tcr_el1_t1sz());
0035     vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
0036     vmcoreinfo_append_str("NUMBER(KERNELPACMASK)=0x%llx\n",
0037                         system_supports_address_auth() ?
0038                         ptrauth_kernel_pac_mask() : 0);
0039 }