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| 1 | /* |
|---|---|
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 2003-2017 Cavium, Inc. |
| 7 | */ |
| 8 | |
| 9 | #ifndef __CVMX_BOOT_VECTOR_H__ |
| 10 | #define __CVMX_BOOT_VECTOR_H__ |
| 11 | |
| 12 | #include <asm/octeon/octeon.h> |
| 13 | |
| 14 | /* |
| 15 | * The boot vector table is made up of an array of 1024 elements of |
| 16 | * struct cvmx_boot_vector_element. There is one entry for each |
| 17 | * possible MIPS CPUNum, indexed by the CPUNum. |
| 18 | * |
| 19 | * Once cvmx_boot_vector_get() returns a non-NULL value (indicating |
| 20 | * success), NMI to a core will cause execution to transfer to the |
| 21 | * target_ptr location for that core's entry in the vector table. |
| 22 | * |
| 23 | * The struct cvmx_boot_vector_element fields app0, app1, and app2 can |
| 24 | * be used by the application that has set the target_ptr in any |
| 25 | * application specific manner, they are not touched by the vectoring |
| 26 | * code. |
| 27 | * |
| 28 | * The boot vector code clobbers the CP0_DESAVE register, and on |
| 29 | * OCTEON II and later CPUs also clobbers CP0_KScratch2. All GP |
| 30 | * registers are preserved, except on pre-OCTEON II CPUs, where k1 is |
| 31 | * clobbered. |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | |
| 36 | /* |
| 37 | * Applications install the boot bus code in cvmx-boot-vector.c, which |
| 38 | * uses this magic: |
| 39 | */ |
| 40 | #define OCTEON_BOOT_MOVEABLE_MAGIC1 0xdb00110ad358eacdull |
| 41 | |
| 42 | struct cvmx_boot_vector_element { |
| 43 | /* kseg0 or xkphys address of target code. */ |
| 44 | uint64_t target_ptr; |
| 45 | /* Three application specific arguments. */ |
| 46 | uint64_t app0; |
| 47 | uint64_t app1; |
| 48 | uint64_t app2; |
| 49 | }; |
| 50 | |
| 51 | struct cvmx_boot_vector_element *cvmx_boot_vector_get(void); |
| 52 | |
| 53 | #endif /* __CVMX_BOOT_VECTOR_H__ */ |
| 54 |
Warning: This file is not a C or C++ file. It does not have highlighting.