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x86: Configure VESA parameters before loading Linux kernel

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Store VESA parameters to Linux setup header so that vesafb driver
in the kernel could work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Jian Luo <jian.luo4@boschrexroth.de>
This commit is contained in:
Bin Meng 2015-07-06 16:31:36 +08:00 committed by Simon Glass
parent 7aaff9bf81
commit a452002259
4 changed files with 33 additions and 2 deletions
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1
arch/x86/include/asm/zimage.h
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@ -38,5 +38,6 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size,
ulong *load_addressp);
int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
unsigned long initrd_addr, unsigned long initrd_size);
void setup_video(struct screen_info *screen_info);
#endif

2
arch/x86/lib/zimage.c
View File

@ -273,6 +273,8 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
build_command_line(cmd_line, auto_boot);
}
setup_video(&setup_base->screen_info);
return 0;
}

28
drivers/pci/pci_rom.c
View File

@ -31,6 +31,7 @@
#include <pci_rom.h>
#include <vbe.h>
#include <video_fb.h>
#include <linux/screen_info.h>
#ifdef CONFIG_HAVE_ACPI_RESUME
#include <asm/acpi.h>
@ -230,6 +231,33 @@ int vbe_get_video_info(struct graphic_device *gdev)
#endif
}
void setup_video(struct screen_info *screen_info)
{
#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
struct vesa_mode_info *vesa = &mode_info.vesa;
screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
screen_info->lfb_width = vesa->x_resolution;
screen_info->lfb_height = vesa->y_resolution;
screen_info->lfb_depth = vesa->bits_per_pixel;
screen_info->lfb_linelength = vesa->bytes_per_scanline;
screen_info->lfb_base = vesa->phys_base_ptr;
screen_info->lfb_size =
ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
65536);
screen_info->lfb_size >>= 16;
screen_info->red_size = vesa->red_mask_size;
screen_info->red_pos = vesa->red_mask_pos;
screen_info->green_size = vesa->green_mask_size;
screen_info->green_pos = vesa->green_mask_pos;
screen_info->blue_size = vesa->blue_mask_size;
screen_info->blue_pos = vesa->blue_mask_pos;
screen_info->rsvd_size = vesa->reserved_mask_size;
screen_info->rsvd_pos = vesa->reserved_mask_pos;
#endif
}
int pci_run_vga_bios(pci_dev_t dev, int (*int15_handler)(void), int exec_method)
{
struct pci_rom_header *rom, *ram;

4
include/vbe.h
View File

@ -12,7 +12,7 @@
#define _VBE_H
/* these structs are for input from and output to OF */
struct __packed screen_info {
struct __packed vbe_screen_info {
u8 display_type; /* 0=NONE, 1= analog, 2=digital */
u16 screen_width;
u16 screen_height;
@ -23,7 +23,7 @@ struct __packed screen_info {
u8 edid_block_zero[128];
};
struct __packed screen_info_input {
struct __packed vbe_screen_info_input {
u8 signature[4];
u16 size_reserved;
u8 monitor_number;