| Nicolas Pitre | e8db288 | 2012-04-12 02:45:22 -0400 | [diff] [blame^] | 1 | /* |
| 2 | * arch/arm/include/asm/mcpm.h |
| 3 | * |
| 4 | * Created by: Nicolas Pitre, April 2012 |
| 5 | * Copyright: (C) 2012-2013 Linaro Limited |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #ifndef MCPM_H |
| 13 | #define MCPM_H |
| 14 | |
| 15 | /* |
| 16 | * Maximum number of possible clusters / CPUs per cluster. |
| 17 | * |
| 18 | * This should be sufficient for quite a while, while keeping the |
| 19 | * (assembly) code simpler. When this starts to grow then we'll have |
| 20 | * to consider dynamic allocation. |
| 21 | */ |
| 22 | #define MAX_CPUS_PER_CLUSTER 4 |
| 23 | #define MAX_NR_CLUSTERS 2 |
| 24 | |
| 25 | #ifndef __ASSEMBLY__ |
| 26 | |
| 27 | /* |
| 28 | * Platform specific code should use this symbol to set up secondary |
| 29 | * entry location for processors to use when released from reset. |
| 30 | */ |
| 31 | extern void mcpm_entry_point(void); |
| 32 | |
| 33 | /* |
| 34 | * This is used to indicate where the given CPU from given cluster should |
| 35 | * branch once it is ready to re-enter the kernel using ptr, or NULL if it |
| 36 | * should be gated. A gated CPU is held in a WFE loop until its vector |
| 37 | * becomes non NULL. |
| 38 | */ |
| 39 | void mcpm_set_entry_vector(unsigned cpu, unsigned cluster, void *ptr); |
| 40 | |
| 41 | #endif /* ! __ASSEMBLY__ */ |
| 42 | #endif |