be973c1ba6
* configure.ac: Accept `powerpc64' as host_cpu. (amd64): Rename to `biarch32'. * kern/powerpc/cache.S (grub_arch_sync_caches): Handle non-cacheline-aligned addresses. * kern/dl.c (grub_dl_load_core): Add grub_dprintf messages. (grub_dl_flush_cache): Likewise. Only call `grub_arch_sync_caches' if `size' is non-zero.
49 lines
1.6 KiB
ArmAsm
49 lines
1.6 KiB
ArmAsm
/* cache.S - Flush the processor cache for a specific region. */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2004 Free Software Foundation, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#define CACHE_LINE_BYTES 32
|
|
|
|
.text
|
|
|
|
.align 2
|
|
.globl grub_arch_sync_caches
|
|
grub_arch_sync_caches:
|
|
/* `address' may not be CACHE_LINE_BYTES-aligned. */
|
|
andi. 6, 3, CACHE_LINE_BYTES - 1 /* Find the misalignment. */
|
|
add 4, 4, 6 /* Adjust `size' to compensate. */
|
|
|
|
/* Force the dcache lines to memory. */
|
|
li 5, 0
|
|
1: dcbst 5, 3
|
|
addi 5, 5, CACHE_LINE_BYTES
|
|
cmpw 5, 4
|
|
blt 1b
|
|
sync /* Force all dcbsts to complete. */
|
|
|
|
/* Invalidate the icache lines. */
|
|
li 5, 0
|
|
1: icbi 5, 3
|
|
addi 5, 5, CACHE_LINE_BYTES
|
|
cmpw 5, 4
|
|
blt 1b
|
|
sync /* Force all icbis to complete. */
|
|
isync /* Discard partially executed instructions that were
|
|
loaded from the invalid icache. */
|
|
blr
|