blob: d306fff6fdb8fec75faf8221a6c78bd93bfb1fd8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Advanced Micro Devices, 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; 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.
*/
#include <stdint.h>
#include <arch/io.h>
#include <arch/acpi.h>
#include <cbmem.h>
#include "sb700.h"
int acpi_get_sleep_type(void)
{
u16 tmp;
tmp = inw(ACPI_PM1_CNT_BLK);
return ((tmp & (7 << 10)) >> 10);
}
void backup_top_of_low_cacheable(uintptr_t ramtop)
{
u32 dword = (u32) ramtop;
int nvram_pos = 0xfc, i;
for (i = 0; i < 4; i++) {
outb(nvram_pos, BIOSRAM_INDEX);
outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA);
nvram_pos++;
}
}
uintptr_t restore_top_of_low_cacheable(void)
{
uint32_t xdata = 0;
int xnvram_pos = 0xfc, xi;
for (xi = 0; xi < 4; xi++) {
outb(xnvram_pos, BIOSRAM_INDEX);
xdata &= ~(0xff << (xi * 8));
xdata |= inb(BIOSRAM_DATA) << (xi *8);
xnvram_pos++;
}
return xdata;
}
|
