blob: 038ee8d532040edfda6c12ccf9e09341cfcd9279 (
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
|
/*
*
* Copyright (C) 2007 Advanced Micro Devices
*
*/
#include <arch/io.h>
#include <stdint.h>
#include <cpu/amd/vr.h>
#include <console/console.h>
/*
* This function mirrors the Graphics_Init routine in GeodeROM.
*/
void graphics_init(void)
{
uint16_t wClassIndex, wData, res;
/* SoftVG initialization */
printk_debug("Graphics init...\n");
/* Call SoftVG with the main configuration parameters. */
/* NOTE: SoftVG expects the memory size to be given in 2MB blocks */
wClassIndex = (VRC_VG << 8) + VG_CONFIG;
/*
* Graphics Driver Enabled (13) 0, NO (lets BIOS controls the GP)
* External Monochrome Card Support(12) 0, NO
* Controller Priority Select(11) 1, Primary
* Display Select(10:8) 0x0, CRT
* Graphics Memory Size(7:1) CONFIG_VIDEO_MB >> 1,
* defined in mainboard/../Options.lb
* PLL Reference Clock Bypass(0) 0, Default
*/
/* Video RAM has to be given in 2MB chunks
* the value is read @ 7:1 (value in 7:0 looks like /2)
* so we can add the real value in megabytes
*/
wData = VG_CFG_DRIVER | VG_CFG_PRIORITY | VG_CFG_DSCRT | (CONFIG_VIDEO_MB & VG_MEM_MASK);
vrWrite(wClassIndex, wData);
res = vrRead(wClassIndex);
printk_debug("VRC_VG value: 0x%04x\n", res);
}
|