// Option rom scanning code.
//
// Copyright (C) 2009-2010 coresystems GmbH
+// Copyright (C) 2010 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "config.h" // CONFIG_*
#include "util.h" // dprintf
#include "jpeg.h" // splash
+#include "biosvar.h" // SET_EBDA
-/****************************************************************
- * Definitions
- ****************************************************************/
/****************************************************************
* VESA structures
struct vesa_info
{
- u8 vesa_signature[4];
+ u32 vesa_signature;
u16 vesa_version;
struct segoff_s oem_string_ptr;
u8 capabilities[4];
u8 oem_data[256];
} PACKED;
+#define VESA_SIGNATURE 0x41534556 // VESA
+#define VBE2_SIGNATURE 0x32454256 // VBE2
+
struct vesa_mode_info
{
u16 mode_attributes;
* Helper functions
****************************************************************/
+// Call int10 vga handler.
+static void
+call16_int10(struct bregs *br)
+{
+ br->flags = F_IF;
+ start_preempt();
+ call16_int(0x10, br);
+ finish_preempt();
+}
+
+
/****************************************************************
* VGA text / graphics console
****************************************************************/
+
static void enable_vga_text_console(void)
{
dprintf(1, "Turning on vga text mode console\n");
/* Enable VGA text mode */
memset(&br, 0, sizeof(br));
- br.flags = F_IF;
br.ax = 0x0003;
- start_preempt();
- call16_int(0x10, &br);
- finish_preempt();
-
- if (CONFIG_BOOTSPLASH) {
- /* Switch back to start of the framebuffer
- * (disable "double buffering")
- */
- memset(&br, 0, sizeof(br));
- br.flags = F_IF;
- br.ax = 0x4f07;
- br.bl = 0x02;
- br.ecx = 0;
-
- start_preempt();
- call16_int(0x10, &br);
- finish_preempt();
- }
+ call16_int10(&br);
// Write to screen.
- printf("Starting SeaBIOS (version %s)\n\n", VERSION);
+ printf("SeaBIOS (version %s)\n\n", VERSION);
}
void enable_vga_console(void)
{
- /* Needs coreboot support for CBFS */
- if (!CONFIG_BOOTSPLASH || !CONFIG_COREBOOT) {
- enable_vga_text_console();
- return;
- }
-
- struct bregs br;
- struct vesa_info *vesa_info;
- struct vesa_mode_info *mode_info;
- struct jpeg_decdata *decdata;
+ struct vesa_info *vesa_info = NULL;
+ struct vesa_mode_info *mode_info = NULL;
+ struct jpeg_decdata *decdata = NULL;
+ u8 *jpeg = NULL, *picture = NULL;
+ /* Needs coreboot support for CBFS */
+ if (!CONFIG_BOOTSPLASH || !CONFIG_COREBOOT)
+ goto gotext;
+ struct cbfs_file *file = cbfs_finddatafile("bootsplash.jpg");
+ if (!file)
+ goto gotext;
+ int filesize = cbfs_datasize(file);
+
+ int imagesize = (CONFIG_BOOTSPLASH_X * CONFIG_BOOTSPLASH_Y *
+ (CONFIG_BOOTSPLASH_DEPTH / 8));
+ jpeg = malloc_tmphigh(filesize);
+ picture = malloc_tmphigh(imagesize);
vesa_info = malloc_tmplow(sizeof(*vesa_info));
mode_info = malloc_tmplow(sizeof(*mode_info));
decdata = malloc_tmphigh(sizeof(*decdata));
+ if (!jpeg || !picture || !vesa_info || !mode_info || !decdata) {
+ warn_noalloc();
+ goto gotext;
+ }
/* Check whether we have a VESA 2.0 compliant BIOS */
memset(vesa_info, 0, sizeof(struct vesa_info));
- memcpy(vesa_info, "VBE2", 4);
-
+ vesa_info->vesa_signature = VBE2_SIGNATURE;
+ struct bregs br;
memset(&br, 0, sizeof(br));
- br.flags = F_IF;
br.ax = 0x4f00;
br.di = FLATPTR_TO_OFFSET(vesa_info);
br.es = FLATPTR_TO_SEG(vesa_info);
- start_preempt();
- call16_int(0x10, &br);
- finish_preempt();
-
- if(strcmp("VESA", (char *)vesa_info) != 0) {
+ call16_int10(&br);
+ if (vesa_info->vesa_signature != VESA_SIGNATURE) {
dprintf(1,"No VBE2 found.\n");
- goto cleanup;
+ goto gotext;
}
/* 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);
-
dprintf(8, "VESA %d.%d\nVENDOR: %s\nPRODUCT: %s\n",
vesa_info->vesa_version>>8, vesa_info->vesa_version&0xff,
vendor, product);
* framebuffer start address
*/
memset(&br, 0, sizeof(br));
- br.flags = F_IF;
br.ax = 0x4f01;
br.cx = (1 << 14) | CONFIG_BOOTSPLASH_VESA_MODE;
br.di = FLATPTR_TO_OFFSET(mode_info);
br.es = FLATPTR_TO_SEG(mode_info);
- start_preempt();
- call16_int(0x10, &br);
- finish_preempt();
+ call16_int10(&br);
if (br.ax != 0x4f) {
dprintf(1, "get_mode failed.\n");
- enable_vga_text_console();
- goto cleanup;
+ goto gotext;
}
unsigned char *framebuffer = (unsigned char *) (mode_info->phys_base_ptr);
/* Switch to graphics mode */
memset(&br, 0, sizeof(br));
- br.flags = F_IF;
br.ax = 0x4f02;
br.bx = (1 << 14) | CONFIG_BOOTSPLASH_VESA_MODE;
- start_preempt();
- call16_int(0x10, &br);
- finish_preempt();
+ call16_int10(&br);
if (br.ax != 0x4f) {
dprintf(1, "set_mode failed.\n");
- enable_vga_text_console();
- goto cleanup;
+ goto gotext;
}
- /* Switching Intel IGD to 1MB video memory will break this. Who cares. */
- int imagesize = CONFIG_BOOTSPLASH_X * CONFIG_BOOTSPLASH_Y *
- (CONFIG_BOOTSPLASH_DEPTH / 8);
-
- /* We use "double buffering" to make things look nicer */
- framebuffer += imagesize;
-
dprintf(8, "framebuffer: %x\n", (u32)framebuffer);
dprintf(8, "bytes per scanline: %d\n", mode_info->bytes_per_scanline);
dprintf(8, "bits per pixel: %d\n", mode_info->bits_per_pixel);
- /* Look for bootsplash.jpg in CBFS and decompress it... */
- int ret = 0;
- unsigned char *jpeg = NULL;
-
- struct cbfs_file *file = cbfs_finddatafile("bootsplash.jpg");
- int filesize = 0;
-
- if (file) {
- filesize = cbfs_datasize(file);
- jpeg = malloc_tmphigh(filesize);
- } else {
- dprintf(1, "Could not find boot splash screen \"bootsplash.jpg\"\n");
- }
- if(jpeg) {
- dprintf(8, "Copying boot splash screen...\n");
- cbfs_copyfile(file, jpeg, filesize);
- dprintf(8, "Decompressing boot splash screen...\n");
- ret = jpeg_decode(jpeg, framebuffer, CONFIG_BOOTSPLASH_X,
+ /* Decompress jpeg */
+ dprintf(8, "Copying boot splash screen...\n");
+ cbfs_copyfile(file, jpeg, filesize);
+ dprintf(8, "Decompressing boot splash screen...\n");
+ int ret = jpeg_decode(jpeg, picture, CONFIG_BOOTSPLASH_X,
CONFIG_BOOTSPLASH_Y, CONFIG_BOOTSPLASH_DEPTH, decdata);
- if (ret)
- dprintf(1, "Failed with return code %d...\n", ret);
- } else {
- ret = -1;
- }
- free(jpeg);
if (ret) {
- enable_vga_text_console();
- goto cleanup;
+ dprintf(1, "jpeg_decode failed with return code %d...\n", ret);
+ goto gotext;
}
/* Show the picture */
- memset(&br, 0, sizeof(br));
- br.flags = F_IF;
- br.ax = 0x4f07;
- br.bl = 0x02;
- br.ecx = imagesize;
- start_preempt();
- call16_int(0x10, &br);
- finish_preempt();
- if (br.ax != 0x4f) {
- dprintf(1, "display_start failed (ax=%04x).\n", br.ax);
- enable_vga_text_console();
- }
+ iomemcpy(framebuffer, picture, imagesize);
+ SET_EBDA(bootsplash_active, 1);
cleanup:
- free (vesa_info);
- free (mode_info);
- free (decdata);
+ free(jpeg);
+ free(picture);
+ free(vesa_info);
+ free(mode_info);
+ free(decdata);
+ return;
+gotext:
+ enable_vga_text_console();
+ goto cleanup;
}
void
disable_bootsplash(void)
{
- if (! CONFIG_BOOTSPLASH)
+ if (! CONFIG_BOOTSPLASH || !GET_EBDA(bootsplash_active))
return;
+ SET_EBDA(bootsplash_active, 0);
enable_vga_text_console();
}
projects / seabios.git / blobdiff