video: coreboot: Save VESA mode for future use

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>

drivers/pci/pci_rom.c

@@ -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)
 {

drivers/video/coreboot_fb.c

@@ -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;
 }

include/vbe.h

@@ -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);