Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux...

[linux-2.6-microblaze.git] / include / linux / crash_core.h

diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index 08704c2..5126a4f 100644 (file)
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h
@@ -5,6 +5,14 @@
 #include <linux/linkage.h>
 #include <linux/elfcore.h>
 #include <linux/elf.h>
+#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
+#include <asm/crash_core.h>
+#endif
+
+/* Location of a reserved region to hold the crash kernel.
+ */
+extern struct resource crashk_res;
+extern struct resource crashk_low_res;
 
 #define CRASH_CORE_NOTE_NAME      "CORE"
 #define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
@@ -79,12 +87,43 @@ Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type,
                          void *data, size_t data_len);
 void final_note(Elf_Word *buf);
 
+#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
+#ifndef DEFAULT_CRASH_KERNEL_LOW_SIZE
+#define DEFAULT_CRASH_KERNEL_LOW_SIZE  (128UL << 20)
+#endif
+#endif
+
 int __init parse_crashkernel(char *cmdline, unsigned long long system_ram,
-               unsigned long long *crash_size, unsigned long long *crash_base);
-int parse_crashkernel_high(char *cmdline, unsigned long long system_ram,
-               unsigned long long *crash_size, unsigned long long *crash_base);
-int parse_crashkernel_low(char *cmdline, unsigned long long system_ram,
-               unsigned long long *crash_size, unsigned long long *crash_base);
+               unsigned long long *crash_size, unsigned long long *crash_base,
+               unsigned long long *low_size, bool *high);
+
+#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
+#ifndef DEFAULT_CRASH_KERNEL_LOW_SIZE
+#define DEFAULT_CRASH_KERNEL_LOW_SIZE  (128UL << 20)
+#endif
+#ifndef CRASH_ALIGN
+#define CRASH_ALIGN                    SZ_2M
+#endif
+#ifndef CRASH_ADDR_LOW_MAX
+#define CRASH_ADDR_LOW_MAX             SZ_4G
+#endif
+#ifndef CRASH_ADDR_HIGH_MAX
+#define CRASH_ADDR_HIGH_MAX            memblock_end_of_DRAM()
+#endif
+
+void __init reserve_crashkernel_generic(char *cmdline,
+               unsigned long long crash_size,
+               unsigned long long crash_base,
+               unsigned long long crash_low_size,
+               bool high);
+#else
+static inline void __init reserve_crashkernel_generic(char *cmdline,
+               unsigned long long crash_size,
+               unsigned long long crash_base,
+               unsigned long long crash_low_size,
+               bool high)
+{}
+#endif
 
 /* Alignment required for elf header segment */
 #define ELF_CORE_HEADER_ALIGN   4096