Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /***************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *	cache.c -- general ColdFire Cache maintenance code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *	Copyright (C) 2010, Greg Ungerer (gerg@snapgear.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /***************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/coldfire.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/mcfsim.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) #ifdef CACHE_PUSH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /***************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  *	Use cpushl to push all dirty cache lines back to memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  *	Older versions of GAS don't seem to know how to generate the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  *	ColdFire cpushl instruction... Oh well, bit stuff it for now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) void mcf_cache_push(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	__asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		"clrl	%%d0\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		"1:\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		"movel	%%d0,%%a0\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		"2:\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		".word	0xf468\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		"addl	%0,%%a0\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		"cmpl	%1,%%a0\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		"blt	2b\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		"addql	#1,%%d0\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		"cmpil	%2,%%d0\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		"bne	1b\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		: /* No output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		: "i" (CACHE_LINE_SIZE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		  "i" (DCACHE_SIZE / CACHE_WAYS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		  "i" (CACHE_WAYS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		: "d0", "a0" );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /***************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #endif /* CACHE_PUSH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /***************************************************************************/