| Manish Ahuja | 6ac26c8 | 2008-03-22 10:37:08 +1100 | [diff] [blame] | 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; |
| Manish Ahuja | 37ddd5d | 2008-04-12 09:31:52 +1000 | [diff] [blame] | 27 | /* cmd line options during boot */ |
| 28 | unsigned long reserve_bootvar; |
| Manish Ahuja | 654f596 | 2008-03-22 11:38:59 +1100 | [diff] [blame] | 29 | unsigned long phyp_dump_at_boot; |
| Manish Ahuja | 37ddd5d | 2008-04-12 09:31:52 +1000 | [diff] [blame] | 30 | /* Check status during boot if dump supported, active & present*/ |
| Manish Ahuja | 6ac26c8 | 2008-03-22 10:37:08 +1100 | [diff] [blame] | 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; |
| Manish Ahuja | a9c508d | 2008-03-22 10:45:22 +1100 | [diff] [blame] | 36 | /* previous scratch area values */ |
| 37 | unsigned long reserved_scratch_addr; |
| 38 | unsigned long reserved_scratch_size; |
| Manish Ahuja | 6ac26c8 | 2008-03-22 10:37:08 +1100 | [diff] [blame] | 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 */ |