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Diffstat (limited to 'include/linux/kexec.h')
-rw-r--r--include/linux/kexec.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 8e80901e466f..84f09e9eca26 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -10,6 +10,7 @@
#include <linux/ioport.h>
#include <linux/elfcore.h>
#include <linux/elf.h>
+#include <linux/module.h>
#include <asm/kexec.h>
/* Verify architecture specific macros are defined */
@@ -95,6 +96,27 @@ struct compat_kexec_segment {
};
#endif
+struct kexec_sha_region {
+ unsigned long start;
+ unsigned long len;
+};
+
+struct purgatory_info {
+ /* Pointer to elf header of read only purgatory */
+ Elf_Ehdr *ehdr;
+
+ /* Pointer to purgatory sechdrs which are modifiable */
+ Elf_Shdr *sechdrs;
+ /*
+ * Temporary buffer location where purgatory is loaded and relocated
+ * This memory can be freed post image load
+ */
+ void *purgatory_buf;
+
+ /* Address where purgatory is finally loaded and is executed from */
+ unsigned long purgatory_load_addr;
+};
+
struct kimage {
kimage_entry_t head;
kimage_entry_t *entry;
@@ -143,6 +165,9 @@ struct kimage {
/* Image loader handling the kernel can store a pointer here */
void *image_loader_data;
+
+ /* Information for loading purgatory */
+ struct purgatory_info purgatory_info;
};
/*
@@ -189,6 +214,14 @@ extern int kexec_add_buffer(struct kimage *image, char *buffer,
unsigned long *load_addr);
extern struct page *kimage_alloc_control_pages(struct kimage *image,
unsigned int order);
+extern int kexec_load_purgatory(struct kimage *image, unsigned long min,
+ unsigned long max, int top_down,
+ unsigned long *load_addr);
+extern int kexec_purgatory_get_set_symbol(struct kimage *image,
+ const char *name, void *buf,
+ unsigned int size, bool get_value);
+extern void *kexec_purgatory_get_symbol_addr(struct kimage *image,
+ const char *name);
extern void crash_kexec(struct pt_regs *);
int kexec_should_crash(struct task_struct *);
void crash_save_cpu(struct pt_regs *regs, int cpu);