freebsd-skq/sys/boot/ia64/common/icache.c
marcel a37f8a9db4 Add ia64_sync_icache() and use it to make the I-cache coherent
after loading the kernel's text segment. The kernel will do the
same for loaded modules, so don't worry about that.
2011-06-07 00:39:15 +00:00

52 lines
1.7 KiB
C

/*-
* Copyright (c) 2011 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stand.h>
#include <machine/ia64_cpu.h>
#include "libia64.h"
void
ia64_sync_icache(vm_offset_t va, size_t sz)
{
uintptr_t pa;
size_t cnt, max;
while (sz > 0) {
max = sz;
pa = (uintptr_t)ia64_va2pa(va, &max);
for (cnt = 0; cnt < max; cnt += 32)
ia64_fc_i(pa + cnt);
ia64_sync_i();
va += max;
sz -= max;
}
ia64_srlz_i();
}