Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * License.  See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 1995 - 1999 Ralf Baechle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (C) 1999 Silicon Graphics, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * Cache error handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/asm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/regdef.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/stackframe.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * Game over.  Go to the button.  Press gently.	 Swear where allowed by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * legislation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	LEAF(except_vec2_generic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	.set	noreorder
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	.set	noat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	.set	mips0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	 * This is a very bad place to be.  Our cache error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	 * detection has triggered.  If we have write-back data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	 * in the cache, we may not be able to recover.	 As a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	 * first-order desperate measure, turn off KSEG0 cacheing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	mfc0	k0,CP0_CONFIG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	li	k1,~CONF_CM_CMASK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	and	k0,k0,k1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	ori	k0,k0,CONF_CM_UNCACHED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	mtc0	k0,CP0_CONFIG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	/* Give it a few cycles to sink in... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	j	cache_parity_error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	END(except_vec2_generic)