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Add ia64_sync_icache() and use it to make the I-cache coherent

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after loading the kernel's text segment. The kernel will do the
same for loaded modules, so don't worry about that.
This commit is contained in:
Marcel Moolenaar 2011-06-07 00:39:15 +00:00
parent 9821807db1
commit 6d48fab9c5
4 changed files with 55 additions and 1 deletions
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2
sys/boot/ia64/common/Makefile
View file

@ -6,7 +6,7 @@ MK_SSP= no
LIB= ia64
INTERNALLIB=
SRCS= autoload.c bootinfo.c copy.c devicename.c exec.c
SRCS= autoload.c bootinfo.c copy.c devicename.c exec.c icache.c
CFLAGS+= -I${.CURDIR}/../../efi/include
CFLAGS+= -I${.CURDIR}/../../efi/include/${MACHINE_CPUARCH}

2
sys/boot/ia64/common/exec.c
View file

@ -258,6 +258,8 @@ ia64_loadseg(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta)
if (ph->p_flags & PF_X) {
ia64_text_start = ph->p_vaddr + delta;
ia64_text_size = ph->p_memsz;
ia64_sync_icache(ia64_text_start, ia64_text_size);
} else {
ia64_data_start = ph->p_vaddr + delta;
ia64_data_size = ph->p_memsz;

51
sys/boot/ia64/common/icache.c Normal file
View file

@ -0,0 +1,51 @@
/*-
* 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();
}

1
sys/boot/ia64/common/libia64.h
View file

@ -64,6 +64,7 @@ void ia64_loadseg(void *, void *, uint64_t);
ssize_t ia64_copyin(const void *, vm_offset_t, size_t);
ssize_t ia64_copyout(vm_offset_t, void *, size_t);
void ia64_sync_icache(vm_offset_t, size_t);
ssize_t ia64_readin(int, vm_offset_t, size_t);
void *ia64_va2pa(vm_offset_t, size_t *);