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Merge bootsplash and VGA ROM vbe structure definitions 

Signed-off-by: Julian Pidancet <julian.pidancet@gmail.com>
This commit is contained in:
Julian Pidancet 2011-12-19 05:07:59 +00:00 committed by Kevin O'Connor
parent a6ad7df53c
commit 69e941c159
2 changed files with 171 additions and 72 deletions
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86
src/bootsplash.c
View File

@ -12,67 +12,9 @@
#include "jpeg.h" // splash
#include "biosvar.h" // SET_EBDA
#include "paravirt.h" // romfile_find
#include "vbe.h" // struct vbe_info
#include "bmp.h"
/****************************************************************
* VESA structures
****************************************************************/
struct vesa_info {
u32 vesa_signature;
u16 vesa_version;
struct segoff_s oem_string_ptr;
u8 capabilities[4];
struct segoff_s video_mode_ptr;
u16 total_memory;
u16 oem_software_rev;
struct segoff_s oem_vendor_name_ptr;
struct segoff_s oem_product_name_ptr;
struct segoff_s oem_product_rev_ptr;
u8 reserved[222];
u8 oem_data[256];
} PACKED;
#define VESA_SIGNATURE 0x41534556 // VESA
#define VBE2_SIGNATURE 0x32454256 // VBE2
struct vesa_mode_info {
u16 mode_attributes;
u8 win_a_attributes;
u8 win_b_attributes;
u16 win_granularity;
u16 win_size;
u16 win_a_segment;
u16 win_b_segment;
u32 win_func_ptr;
u16 bytes_per_scanline;
u16 x_resolution;
u16 y_resolution;
u8 x_charsize;
u8 y_charsize;
u8 number_of_planes;
u8 bits_per_pixel;
u8 number_of_banks;
u8 memory_model;
u8 bank_size;
u8 number_of_image_pages;
u8 reserved_page;
u8 red_mask_size;
u8 red_mask_pos;
u8 green_mask_size;
u8 green_mask_pos;
u8 blue_mask_size;
u8 blue_mask_pos;
u8 reserved_mask_size;
u8 reserved_mask_pos;
u8 direct_color_mode_info;
void *phys_base_ptr;
u32 offscreen_mem_offset;
u16 offscreen_mem_size;
u8 reserved[206];
} PACKED;
/****************************************************************
* Helper functions
****************************************************************/
@ -108,11 +50,11 @@ enable_vga_console(void)
}
static int
find_videomode(struct vesa_info *vesa_info, struct vesa_mode_info *mode_info
find_videomode(struct vbe_info *vesa_info, struct vbe_mode_info *mode_info
, int width, int height, int bpp_req)
{
dprintf(3, "Finding vesa mode with dimensions %d/%d\n", width, height);
u16 *videomodes = SEGOFF_TO_FLATPTR(vesa_info->video_mode_ptr);
u16 *videomodes = SEGOFF_TO_FLATPTR(vesa_info->video_mode);
for (;; videomodes++) {
u16 videomode = *videomodes;
if (videomode == 0xffff) {
@ -131,8 +73,8 @@ find_videomode(struct vesa_info *vesa_info, struct vesa_mode_info *mode_info
dprintf(1, "get_mode failed.\n");
continue;
}
if (mode_info->x_resolution != width
|| mode_info->y_resolution != height)
if (mode_info->xres != width
|| mode_info->yres != height)
continue;
u8 depth = mode_info->bits_per_pixel;
if (bpp_req == 0) {
@ -169,32 +111,32 @@ enable_bootsplash(void)
u8 *picture = NULL; /* data buff used to be flushed to the video buf */
struct jpeg_decdata *jpeg = NULL;
struct bmp_decdata *bmp = NULL;
struct vesa_info *vesa_info = malloc_tmplow(sizeof(*vesa_info));
struct vesa_mode_info *mode_info = malloc_tmplow(sizeof(*mode_info));
struct vbe_info *vesa_info = malloc_tmplow(sizeof(*vesa_info));
struct vbe_mode_info *mode_info = malloc_tmplow(sizeof(*mode_info));
if (!vesa_info || !mode_info) {
warn_noalloc();
goto done;
}
/* Check whether we have a VESA 2.0 compliant BIOS */
memset(vesa_info, 0, sizeof(struct vesa_info));
vesa_info->vesa_signature = VBE2_SIGNATURE;
memset(vesa_info, 0, sizeof(struct vbe_info));
vesa_info->signature = VBE2_SIGNATURE;
struct bregs br;
memset(&br, 0, sizeof(br));
br.ax = 0x4f00;
br.di = FLATPTR_TO_OFFSET(vesa_info);
br.es = FLATPTR_TO_SEG(vesa_info);
call16_int10(&br);
if (vesa_info->vesa_signature != VESA_SIGNATURE) {
if (vesa_info->signature != VESA_SIGNATURE) {
dprintf(1,"No VBE2 found.\n");
goto done;
}
/* Print some debugging information about our card. */
char *vendor = SEGOFF_TO_FLATPTR(vesa_info->oem_vendor_name_ptr);
char *product = SEGOFF_TO_FLATPTR(vesa_info->oem_product_name_ptr);
char *vendor = SEGOFF_TO_FLATPTR(vesa_info->oem_vendor_string);
char *product = SEGOFF_TO_FLATPTR(vesa_info->oem_product_string);
dprintf(3, "VESA %d.%d\nVENDOR: %s\nPRODUCT: %s\n",
vesa_info->vesa_version>>8, vesa_info->vesa_version&0xff,
vesa_info->version>>8, vesa_info->version&0xff,
vendor, product);
int ret, width, height;
@ -239,7 +181,7 @@ enable_bootsplash(void)
width, height, bpp_require);
goto done;
}
void *framebuffer = mode_info->phys_base_ptr;
void *framebuffer = (void *)mode_info->phys_base;
int depth = mode_info->bits_per_pixel;
dprintf(3, "mode: %04x\n", videomode);
dprintf(3, "framebuffer: %p\n", framebuffer);

157
src/vbe.h Normal file
View File

@ -0,0 +1,157 @@
#ifndef __VBE_H
#define __VBE_H
#include "types.h" // u8
#include "farptr.h" // struct segoff_s
#define VESA_SIGNATURE 0x41534556 // VESA
#define VBE2_SIGNATURE 0x32454256 // VBE2
struct vbe_info {
u32 signature;
u16 version;
struct segoff_s oem_string;
u8 capabilities[4];
struct segoff_s video_mode;
u16 total_memory;
u16 oem_revision;
struct segoff_s oem_vendor_string;
struct segoff_s oem_product_string;
struct segoff_s oem_revision_string;
u8 reserved[222];
} PACKED;
struct vbe_mode_info {
/* VBE */
u16 mode_attributes;
u8 winA_attributes;
u8 winB_attributes;
u16 win_granularity;
u16 win_size;
u16 winA_seg;
u16 winB_seg;
u32 win_func_ptr;
u16 bytes_per_scanline;
/* VBE 1.2 */
u16 xres;
u16 yres;
u8 xcharsize;
u8 ycharsize;
u8 planes;
u8 bits_per_pixel;
u8 banks;
u8 mem_model;
u8 bank_size;
u8 pages;
u8 reserved0;
/* Direct Color */
u8 red_size;
u8 red_pos;
u8 green_size;
u8 green_pos;
u8 blue_size;
u8 blue_pos;
u8 alpha_size;
u8 alpha_pos;
u8 directcolor_info;
/* VBE 2.0 */
u32 phys_base;
u32 reserved1;
u16 reserved2;
/* VBE 3.0 */
u16 linear_bytes_per_scanline;
u8 bank_pages;
u8 linear_pages;
u8 linear_red_size;
u8 linear_red_pos;
u8 linear_green_size;
u8 linear_green_pos;
u8 linear_blue_size;
u8 linear_blue_pos;
u8 linear_alpha_size;
u8 linear_alpha_pos;
u32 pixclock_max;
u8 reserved[189];
} PACKED;
struct vbe_crtc_info {
u16 horiz_total;
u16 horiz_sync_start;
u16 horiz_sync_end;
u16 vert_total;
u16 vert_sync_start;
u16 vert_sync_end;
u8 flags;
u32 pixclock;
u16 refresh_rate;
u8 reserved[40];
} PACKED;
/* VBE Return Status Info */
/* AL */
#define VBE_RETURN_STATUS_SUPPORTED 0x4F
#define VBE_RETURN_STATUS_UNSUPPORTED 0x00
/* AH */
#define VBE_RETURN_STATUS_SUCCESSFULL 0x00
#define VBE_RETURN_STATUS_FAILED 0x01
#define VBE_RETURN_STATUS_NOT_SUPPORTED 0x02
#define VBE_RETURN_STATUS_INVALID 0x03
/* VBE Mode Numbers */
#define VBE_MODE_VESA_DEFINED 0x0100
#define VBE_MODE_REFRESH_RATE_USE_CRTC 0x0800
#define VBE_MODE_LINEAR_FRAME_BUFFER 0x4000
#define VBE_MODE_PRESERVE_DISPLAY_MEMORY 0x8000
#define VBE_VESA_MODE_END_OF_LIST 0xFFFF
/* Capabilities */
#define VBE_CAPABILITY_8BIT_DAC 0x0001
#define VBE_CAPABILITY_NOT_VGA_COMPATIBLE 0x0002
#define VBE_CAPABILITY_RAMDAC_USE_BLANK_BIT 0x0004
#define VBE_CAPABILITY_STEREOSCOPIC_SUPPORT 0x0008
#define VBE_CAPABILITY_STEREO_VIA_VESA_EVC 0x0010
/* Mode Attributes */
#define VBE_MODE_ATTRIBUTE_SUPPORTED 0x0001
#define VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE 0x0002
#define VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT 0x0004
#define VBE_MODE_ATTRIBUTE_COLOR_MODE 0x0008
#define VBE_MODE_ATTRIBUTE_GRAPHICS_MODE 0x0010
#define VBE_MODE_ATTRIBUTE_NOT_VGA_COMPATIBLE 0x0020
#define VBE_MODE_ATTRIBUTE_NO_VGA_COMPATIBLE_WINDOW 0x0040
#define VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE 0x0080
#define VBE_MODE_ATTRIBUTE_DOUBLE_SCAN_MODE 0x0100
#define VBE_MODE_ATTRIBUTE_INTERLACE_MODE 0x0200
#define VBE_MODE_ATTRIBUTE_HARDWARE_TRIPLE_BUFFER 0x0400
#define VBE_MODE_ATTRIBUTE_HARDWARE_STEREOSCOPIC_DISPLAY 0x0800
#define VBE_MODE_ATTRIBUTE_DUAL_DISPLAY_START_ADDRESS 0x1000
#define VBE_MODE_ATTTRIBUTE_LFB_ONLY ( VBE_MODE_ATTRIBUTE_NO_VGA_COMPATIBLE_WINDOW | VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE )
/* Window attributes */
#define VBE_WINDOW_ATTRIBUTE_RELOCATABLE 0x01
#define VBE_WINDOW_ATTRIBUTE_READABLE 0x02
#define VBE_WINDOW_ATTRIBUTE_WRITEABLE 0x04
/* Memory model */
#define VBE_MEMORYMODEL_TEXT_MODE 0x00
#define VBE_MEMORYMODEL_CGA_GRAPHICS 0x01
#define VBE_MEMORYMODEL_HERCULES_GRAPHICS 0x02
#define VBE_MEMORYMODEL_PLANAR 0x03
#define VBE_MEMORYMODEL_PACKED_PIXEL 0x04
#define VBE_MEMORYMODEL_NON_CHAIN_4_256 0x05
#define VBE_MEMORYMODEL_DIRECT_COLOR 0x06
#define VBE_MEMORYMODEL_YUV 0x07
/* DirectColorModeInfo */
#define VBE_DIRECTCOLOR_COLOR_RAMP_PROGRAMMABLE 0x01
#define VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE 0x02
#endif