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Diffstat (limited to 'arch/powerpc/include/asm/phyp_dump.h')
-rw-r--r--arch/powerpc/include/asm/phyp_dump.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/phyp_dump.h b/arch/powerpc/include/asm/phyp_dump.h
new file mode 100644
index 000000000000..fa74c6c3e106
--- /dev/null
+++ b/arch/powerpc/include/asm/phyp_dump.h
@@ -0,0 +1,47 @@
+/*
+ * Hypervisor-assisted dump
+ *
+ * Linas Vepstas, Manish Ahuja 2008
+ * Copyright 2008 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _PPC64_PHYP_DUMP_H
+#define _PPC64_PHYP_DUMP_H
+
+#ifdef CONFIG_PHYP_DUMP
+
+/* The RMR region will be saved for later dumping
+ * whenever the kernel crashes. Set this to 256MB. */
+#define PHYP_DUMP_RMR_START 0x0
+#define PHYP_DUMP_RMR_END (1UL<<28)
+
+struct phyp_dump {
+ /* Memory that is reserved during very early boot. */
+ unsigned long init_reserve_start;
+ unsigned long init_reserve_size;
+ /* cmd line options during boot */
+ unsigned long reserve_bootvar;
+ unsigned long phyp_dump_at_boot;
+ /* Check status during boot if dump supported, active & present*/
+ unsigned long phyp_dump_configured;
+ unsigned long phyp_dump_is_active;
+ /* store cpu & hpte size */
+ unsigned long cpu_state_size;
+ unsigned long hpte_region_size;
+ /* previous scratch area values */
+ unsigned long reserved_scratch_addr;
+ unsigned long reserved_scratch_size;
+};
+
+extern struct phyp_dump *phyp_dump_info;
+
+int early_init_dt_scan_phyp_dump(unsigned long node,
+ const char *uname, int depth, void *data);
+
+#endif /* CONFIG_PHYP_DUMP */
+#endif /* _PPC64_PHYP_DUMP_H */