54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
|
|
* 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__ */
|