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video: coreboot: Save VESA mode for future use

Browse source 
When booting as a coreboot payload, the framebuffer details are
passed from coreboot via configuration tables. We save these
information into vesa_mode_info structure for future use.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Bin Meng 2015-08-13 00:29:16 -07:00 • committed by Simon Glass
parent 3ff2f001c2
commit 153e1dda2f
3 changed files with 27 additions and 1 deletions
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2
drivers/pci/pci_rom.c
View file

@ -187,7 +187,7 @@ int pci_rom_load(struct pci_rom_header *rom_header,
return 0;
}
static struct vbe_mode_info mode_info;
struct vbe_mode_info mode_info;
int vbe_get_video_info(struct graphic_device *gdev)
{

24
drivers/video/coreboot_fb.c
View file

@ -9,6 +9,7 @@
#include <common.h>
#include <asm/arch/tables.h>
#include <asm/arch/sysinfo.h>
#include <vbe.h>
#include <video_fb.h>
#include "videomodes.h"
@ -17,6 +18,26 @@
*/
GraphicDevice ctfb;
static void save_vesa_mode(void)
{
struct vesa_mode_info *vesa = &mode_info.vesa;
struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
vesa->x_resolution = fb->x_resolution;
vesa->y_resolution = fb->y_resolution;
vesa->bits_per_pixel = fb->bits_per_pixel;
vesa->bytes_per_scanline = fb->bytes_per_line;
vesa->phys_base_ptr = fb->physical_address;
vesa->red_mask_size = fb->red_mask_size;
vesa->red_mask_pos = fb->red_mask_pos;
vesa->green_mask_size = fb->green_mask_size;
vesa->green_mask_pos = fb->green_mask_pos;
vesa->blue_mask_size = fb->blue_mask_size;
vesa->blue_mask_pos = fb->blue_mask_pos;
vesa->reserved_mask_size = fb->reserved_mask_size;
vesa->reserved_mask_pos = fb->reserved_mask_pos;
}
static int parse_coreboot_table_fb(GraphicDevice *gdev)
{
struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
@ -81,5 +102,8 @@ void *video_hw_init(void)
memset((void *)gdev->pciBase, 0,
gdev->winSizeX * gdev->winSizeY * gdev->gdfBytesPP);
/* Initialize vesa_mode_info structure */
save_vesa_mode();
return (void *)gdev;
}

2
include/vbe.h
View file

@ -102,6 +102,8 @@ struct vbe_ddc_info {
#define VESA_SET_MODE 0x4f02
#define VESA_GET_CUR_MODE 0x4f03
extern struct vbe_mode_info mode_info;
struct graphic_device;
int vbe_get_video_info(struct graphic_device *gdev);