1 /* 2 * Hypervisor-assisted dump 3 * 4 * Linas Vepstas, Manish Ahuja 2008 5 * Copyright 2008 IBM Corp. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 13 #ifndef _PPC64_PHYP_DUMP_H 14 #define _PPC64_PHYP_DUMP_H 15 16 #ifdef CONFIG_PHYP_DUMP 17 18 /* The RMR region will be saved for later dumping 19 * whenever the kernel crashes. Set this to 256MB. */ 20 #define PHYP_DUMP_RMR_START 0x0 21 #define PHYP_DUMP_RMR_END (1UL<<28) 22 23 struct phyp_dump { 24 /* Memory that is reserved during very early boot. */ 25 unsigned long init_reserve_start; 26 unsigned long init_reserve_size; 27 /* cmd line options during boot */ 28 unsigned long reserve_bootvar; 29 unsigned long phyp_dump_at_boot; 30 /* Check status during boot if dump supported, active & present*/ 31 unsigned long phyp_dump_configured; 32 unsigned long phyp_dump_is_active; 33 /* store cpu & hpte size */ 34 unsigned long cpu_state_size; 35 unsigned long hpte_region_size; 36 /* previous scratch area values */ 37 unsigned long reserved_scratch_addr; 38 unsigned long reserved_scratch_size; 39 }; 40 41 extern struct phyp_dump *phyp_dump_info; 42 43 int early_init_dt_scan_phyp_dump(unsigned long node, 44 const char *uname, int depth, void *data); 45 46 #endif /* CONFIG_PHYP_DUMP */ 47 #endif /* _PPC64_PHYP_DUMP_H */ 48