a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright (C) 2004 Eric W. Biederman
|
|
*
|
|
* 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; version 2 of the License.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef CPU_X86_CACHE
|
|
#define CPU_X86_CACHE
|
|
|
|
#include <cpu/x86/cr.h>
|
|
|
|
#define CR0_CacheDisable (CR0_CD)
|
|
#define CR0_NoWriteThrough (CR0_NW)
|
|
|
|
#if !defined(__ASSEMBLER__)
|
|
|
|
/*
|
|
* Need two versions because ROMCC chokes on certain clobbers:
|
|
* cache.h:29.71: cache.h:60.24: earlymtrr.c:117.23: romstage.c:144.33:
|
|
* 0x1559920 asm Internal compiler error: lhs 1 regcm == 0
|
|
*/
|
|
|
|
#if defined(__GNUC__)
|
|
|
|
static inline void wbinvd(void)
|
|
{
|
|
asm volatile ("wbinvd" ::: "memory");
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void wbinvd(void)
|
|
{
|
|
asm volatile ("wbinvd");
|
|
}
|
|
|
|
#endif
|
|
|
|
static inline void invd(void)
|
|
{
|
|
asm volatile("invd" ::: "memory");
|
|
}
|
|
|
|
/* The following functions require the always_inline due to AMD
|
|
* function STOP_CAR_AND_CPU that disables cache as
|
|
* ram, the cache as ram stack can no longer be used. Called
|
|
* functions must be inlined to avoid stack usage. Also, the
|
|
* compiler must keep local variables register based and not
|
|
* allocated them from the stack. With gcc 4.5.0, some functions
|
|
* declared as inline are not being inlined. This patch forces
|
|
* these functions to always be inlined by adding the qualifier
|
|
* __attribute__((always_inline)) to their declaration.
|
|
*/
|
|
static inline __attribute__((always_inline)) void enable_cache(void)
|
|
{
|
|
unsigned long cr0;
|
|
cr0 = read_cr0();
|
|
cr0 &= ~(CR0_CD | CR0_NW);
|
|
write_cr0(cr0);
|
|
}
|
|
|
|
static inline __attribute__((always_inline)) void disable_cache(void)
|
|
{
|
|
/* Disable and write back the cache */
|
|
unsigned long cr0;
|
|
cr0 = read_cr0();
|
|
cr0 |= CR0_CD;
|
|
wbinvd();
|
|
write_cr0(cr0);
|
|
wbinvd();
|
|
}
|
|
|
|
#if !defined(__PRE_RAM__)
|
|
void x86_enable_cache(void);
|
|
#endif
|
|
|
|
#endif /* !__ASSEMBLER__ */
|
|
#endif /* CPU_X86_CACHE */
|