name : cvmx-boot-vector.h /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2003-2017 Cavium, Inc. */ #ifndef __CVMX_BOOT_VECTOR_H__ #define __CVMX_BOOT_VECTOR_H__ #include <asm/octeon/octeon.h> /* * The boot vector table is made up of an array of 1024 elements of * struct cvmx_boot_vector_element. There is one entry for each * possible MIPS CPUNum, indexed by the CPUNum. * * Once cvmx_boot_vector_get() returns a non-NULL value (indicating * success), NMI to a core will cause execution to transfer to the * target_ptr location for that core's entry in the vector table. * * The struct cvmx_boot_vector_element fields app0, app1, and app2 can * be used by the application that has set the target_ptr in any * application specific manner, they are not touched by the vectoring * code. * * The boot vector code clobbers the CP0_DESAVE register, and on * OCTEON II and later CPUs also clobbers CP0_KScratch2. All GP * registers are preserved, except on pre-OCTEON II CPUs, where k1 is * clobbered. * */ /* * Applications install the boot bus code in cvmx-boot-vector.c, which * uses this magic: */ #define OCTEON_BOOT_MOVEABLE_MAGIC1 0xdb00110ad358eacdull struct cvmx_boot_vector_element { /* kseg0 or xkphys address of target code. */ uint64_t target_ptr; /* Three application specific arguments. */ uint64_t app0; uint64_t app1; uint64_t app2; }; struct cvmx_boot_vector_element *cvmx_boot_vector_get(void); #endif /* __CVMX_BOOT_VECTOR_H__ */