diff options
| -rw-r--r-- | configure.ac | 1 | ||||
| -rw-r--r-- | src/Makefile.am | 2 | ||||
| -rw-r--r-- | src/bios_reader/.gitignore | 1 | ||||
| -rw-r--r-- | src/bios_reader/Makefile.am | 4 | ||||
| -rw-r--r-- | src/bios_reader/bios_reader.c | 163 |
5 files changed, 170 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 78824330..34672969 100644 --- a/configure.ac +++ b/configure.ac @@ -116,5 +116,6 @@ AC_OUTPUT([ Makefile src/Makefile src/xvmc/Makefile + src/bios_reader/Makefile man/Makefile ]) diff --git a/src/Makefile.am b/src/Makefile.am index 1b30c656..1789af23 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -18,7 +18,7 @@ # IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -SUBDIRS = xvmc +SUBDIRS = xvmc bios_reader # this is obnoxious: # -module lets us name the module exactly how we want # -avoid-version prevents gratuitous .0.0.0 version numbers on the end diff --git a/src/bios_reader/.gitignore b/src/bios_reader/.gitignore new file mode 100644 index 00000000..3e325072 --- /dev/null +++ b/src/bios_reader/.gitignore @@ -0,0 +1 @@ +bios_reader diff --git a/src/bios_reader/Makefile.am b/src/bios_reader/Makefile.am new file mode 100644 index 00000000..f18a00c3 --- /dev/null +++ b/src/bios_reader/Makefile.am @@ -0,0 +1,4 @@ +AM_CFLAGS = @XORG_CFLAGS@ + +noinst_PROGRAMS = bios_reader + diff --git a/src/bios_reader/bios_reader.c b/src/bios_reader/bios_reader.c new file mode 100644 index 00000000..a52bcc72 --- /dev/null +++ b/src/bios_reader/bios_reader.c @@ -0,0 +1,163 @@ +/* + * Copyright © 2006 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> + +#define _PARSE_EDID_ +#include "edid.h" + +/* Define some types so we can reuse i830_bios.h */ +typedef void *ScrnInfoPtr; +typedef int Bool; +#define TRUE 1 +#define FALSE 0 +#include "../i830_bios.h" + + +/* Make a fake pI830 so we can easily pull i830_bios.c code in here. */ +struct _fake_i830 { + CARD8 *VBIOS; +}; +struct _fake_i830 I830; +struct _fake_i830 *pI830 = &I830; + +#define INTEL_BIOS_8(_addr) (pI830->VBIOS[_addr]) +#define INTEL_BIOS_16(_addr) (pI830->VBIOS[_addr] | \ + (pI830->VBIOS[_addr + 1] << 8)) +#define INTEL_BIOS_32(_addr) (pI830->VBIOS[_addr] | \ + (pI830->VBIOS[_addr + 1] << 8) \ + (pI830->VBIOS[_addr + 2] << 16) \ + (pI830->VBIOS[_addr + 3] << 24)) + +int main(int argc, char **argv) +{ + FILE *f; + int bios_size = 65536; + struct vbt_header *vbt; + struct bdb_header *bdb; + int vbt_off, bdb_off, bdb_block_off, block_size; + int panel_type = -1, i; + char *filename = "bios"; + + if (argc == 2) + filename = argv[1]; + + f = fopen(filename, "r"); + if (!f) { + printf("Couldn't open %s\n", filename); + return 1; + } + + pI830->VBIOS = calloc(1, bios_size); + if (fread(pI830->VBIOS, 1, bios_size, f) != bios_size) + return 1; + + vbt_off = INTEL_BIOS_16(0x1a); + printf("VBT offset: %08x\n", vbt_off); + vbt = (struct vbt_header *)(pI830->VBIOS + vbt_off); + printf("VBT sig: %20s\n", vbt->signature); + printf("VBT vers: %d.%d\n", vbt->version / 100, vbt->version % 100); + + bdb_off = vbt_off + vbt->bdb_offset; + bdb = (struct bdb_header *)(pI830->VBIOS + bdb_off); + printf("BDB sig: %16s\n", bdb->signature); + printf("BDB vers: %d.%d\n", bdb->version / 100, bdb->version % 100); + for (bdb_block_off = bdb->header_size; bdb_block_off < bdb->bdb_size; + bdb_block_off += block_size) + { + int start = bdb_off + bdb_block_off; + int id; + struct lvds_bdb_1 *lvds1; + struct lvds_bdb_2 *lvds2; + struct lvds_bdb_2_fp_params *fpparam; + struct lvds_bdb_2_fp_edid_dtd *fptiming; + CARD8 *timing_ptr; + + id = INTEL_BIOS_8(start); + block_size = INTEL_BIOS_16(start + 1) + 3; + printf("BDB block type %03d size %d\n", id, block_size); + switch (id) { + case 40: + lvds1 = (struct lvds_bdb_1 *)(pI830->VBIOS + start); + panel_type = lvds1->panel_type; + printf("Panel type: %d, caps %04x\n", panel_type, lvds1->caps); + break; + case 41: + if (panel_type == -1) { + printf("Found panel block with no panel type\n"); + break; + } + + lvds2 = (struct lvds_bdb_2 *)(pI830->VBIOS + start); + + printf("Entries per table: %d\n", lvds2->table_size); + for (i = 0; i < 16; i++) { + char marker; + fpparam = (struct lvds_bdb_2_fp_params *)(pI830->VBIOS + + bdb_off + lvds2->panels[i].fp_params_offset); + fptiming = (struct lvds_bdb_2_fp_edid_dtd *)(pI830->VBIOS + + bdb_off + lvds2->panels[i].fp_edid_dtd_offset); + timing_ptr = pI830->VBIOS + bdb_off + + lvds2->panels[i].fp_edid_dtd_offset; + if (fpparam->terminator != 0xffff) { + /* Apparently the offsets are wrong for some BIOSes, so we + * try the other offsets if we find a bad terminator. + */ + fpparam = (struct lvds_bdb_2_fp_params *)(pI830->VBIOS + + bdb_off + lvds2->panels[i].fp_params_offset + 8); + fptiming = (struct lvds_bdb_2_fp_edid_dtd *)(pI830->VBIOS + + bdb_off + lvds2->panels[i].fp_edid_dtd_offset + 8); + timing_ptr = pI830->VBIOS + bdb_off + + lvds2->panels[i].fp_edid_dtd_offset + 8; + + if (fpparam->terminator != 0xffff) + continue; + } + if (i == panel_type) + marker = '*'; + else + marker = ' '; + printf("%c Panel index %02i xres %d yres %d clock %d\n", marker, + i, fpparam->x_res, fpparam->y_res, + _PIXEL_CLOCK(timing_ptr)); + printf(" %d %d %d %d %d %d %d %d\n", + _H_ACTIVE(timing_ptr), _H_BLANK(timing_ptr), + _H_SYNC_OFF(timing_ptr), _H_SYNC_WIDTH(timing_ptr), + _V_ACTIVE(timing_ptr), _V_BLANK(timing_ptr), + _V_SYNC_OFF(timing_ptr), _V_SYNC_WIDTH(timing_ptr)); + } + + printf("Panel of size %dx%d\n", fpparam->x_res, fpparam->y_res); + break; + } + } + + return 0; +} |