cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

bios_parser_helper.c (2328B)

      1/*
      2 * Copyright 2012-15 Advanced Micro Devices, Inc.
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a
      5 * copy of this software and associated documentation files (the "Software"),
      6 * to deal in the Software without restriction, including without limitation
      7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8 * and/or sell copies of the Software, and to permit persons to whom the
      9 * Software is furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice shall be included in
     12 * all copies or substantial portions of the Software.
     13 *
     14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     20 * OTHER DEALINGS IN THE SOFTWARE.
     21 *
     22 * Authors: AMD
     23 *
     24 */
     25
     26#include "dm_services.h"
     27
     28#include "atom.h"
     29
     30#include "include/bios_parser_types.h"
     31#include "bios_parser_helper.h"
     32#include "command_table_helper.h"
     33#include "command_table.h"
     34#include "bios_parser_types_internal.h"
     35
     36uint8_t *bios_get_image(struct dc_bios *bp,
     37	uint32_t offset,
     38	uint32_t size)
     39{
     40	if (bp->bios && offset + size < bp->bios_size)
     41		return bp->bios + offset;
     42	else
     43		return NULL;
     44}
     45
     46#include "reg_helper.h"
     47
     48#define CTX \
     49	bios->ctx
     50#define REG(reg)\
     51	(bios->regs->reg)
     52
     53#undef FN
     54#define FN(reg_name, field_name) \
     55		ATOM_ ## field_name ## _SHIFT, ATOM_ ## field_name
     56
     57bool bios_is_accelerated_mode(
     58	struct dc_bios *bios)
     59{
     60	uint32_t acc_mode;
     61	REG_GET(BIOS_SCRATCH_6, S6_ACC_MODE, &acc_mode);
     62	return (acc_mode == 1);
     63}
     64
     65
     66void bios_set_scratch_acc_mode_change(
     67	struct dc_bios *bios,
     68	uint32_t state)
     69{
     70	REG_UPDATE(BIOS_SCRATCH_6, S6_ACC_MODE, state);
     71}
     72
     73
     74void bios_set_scratch_critical_state(
     75	struct dc_bios *bios,
     76	bool state)
     77{
     78	uint32_t critial_state = state ? 1 : 0;
     79	REG_UPDATE(BIOS_SCRATCH_6, S6_CRITICAL_STATE, critial_state);
     80}
     81
     82uint32_t bios_get_vga_enabled_displays(
     83	struct dc_bios *bios)
     84{
     85	return REG_READ(BIOS_SCRATCH_3) & 0XFFFF;
     86}
     87