/*
* 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 0 xdb00110ad358eacdull
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__ */
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