vmcore_info.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2
 3#include <linux/vmcore_info.h>
 4#include <linux/pagemap.h>
 5
 6void arch_crash_save_vmcoreinfo(void)
 7{
 8	VMCOREINFO_NUMBER(phys_ram_base);
 9
10	vmcoreinfo_append_str("NUMBER(PAGE_OFFSET)=0x%lx\n", PAGE_OFFSET);
11	vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END);
12#ifdef CONFIG_MMU
13	VMCOREINFO_NUMBER(VA_BITS);
14	vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START);
15	vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END);
16#ifdef CONFIG_64BIT
17	vmcoreinfo_append_str("NUMBER(MODULES_VADDR)=0x%lx\n", MODULES_VADDR);
18	vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END);
19#endif
20#endif
21	vmcoreinfo_append_str("NUMBER(KERNEL_LINK_ADDR)=0x%lx\n", KERNEL_LINK_ADDR);
22#ifdef CONFIG_XIP_KERNEL
23	/* TODO: Communicate with crash-utility developers on the information to
24	 * export. The XIP case is more complicated, because the virtual-physical
25	 * address offset depends on whether the address is in ROM or in RAM.
26	 */
27#else
28	vmcoreinfo_append_str("NUMBER(va_kernel_pa_offset)=0x%lx\n",
29						kernel_map.va_kernel_pa_offset);
30#endif
31}