Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * Xtensa Secondary Processors startup code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * License.  See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Copyright (C) 2001 - 2013 Tensilica Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * Joe Taylor <joe@tensilica.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * Chris Zankel <chris@zankel.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * Pete Delaney <piet@tensilica.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/cacheasm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/initialize_mmu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/mxregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/regs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	.section .SecondaryResetVector.text, "ax"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) ENTRY(_SecondaryResetVector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	_j _SetupOCD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	.begin  no-absolute-literals
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	.literal_position
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) _SetupOCD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	 * Initialize WB, WS, and clear PS.EXCM (to allow loop instructions).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	 * Set Interrupt Level just below XCHAL_DEBUGLEVEL to allow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	 * xt-gdb to single step via DEBUG exceptions received directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 * by ocd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	movi	a1, 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	movi	a0, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	wsr	a1, windowstart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	wsr	a0, windowbase
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	rsync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	movi	a1, LOCKLEVEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	wsr	a1, ps
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	rsync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) _SetupMMU:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	initialize_mmu
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	 * Start Secondary Processors with NULL pointer to boot params.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	movi	a2, 0				#  a2 == NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	movi	a3, _startup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	jx	a3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	.end    no-absolute-literals