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authorVladimir Serbinenko <phcoder@gmail.com>2014-05-24 16:34:29 +0200
committerVladimir Serbinenko <phcoder@gmail.com>2015-05-25 18:19:51 +0200
commit5a6b8d157bc88e243cde54d347c715243a6f1c1e (patch)
tree1c96e6ff7d10f99aee5ff42835c67c0499647a2c /util
parentf48179f171258486d4b0338d2055810b88802d7e (diff)
downloadcoreboot-5a6b8d157bc88e243cde54d347c715243a6f1c1e.tar.gz
coreboot-5a6b8d157bc88e243cde54d347c715243a6f1c1e.tar.xz
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VBT parser.
Change-Id: I32f6505dbf683478bf5a25b73db7ab0c60eff29c Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/5842 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'util')
-rw-r--r--util/intelvbttool/intelvbttool.c536
1 files changed, 536 insertions, 0 deletions
diff --git a/util/intelvbttool/intelvbttool.c b/util/intelvbttool/intelvbttool.c
new file mode 100644
index 000000000..3dd2a1e2f
--- /dev/null
+++ b/util/intelvbttool/intelvbttool.c
@@ -0,0 +1,536 @@
+/*
+ * Copyright (C) 2014 Vladimir Serbinenko
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <stdio.h>
+#include <sys/mman.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+
+
+typedef struct {
+ u16 signature;
+ u8 size;
+ u8 reserved[21];
+ u16 pcir_offset;
+ u16 vbt_offset;
+} __attribute__ ((packed)) optionrom_header_t;
+
+struct vbt_header {
+ u8 signature[20];
+ u16 version;
+ u16 header_size;
+ u16 vbt_size;
+ u8 vbt_checksum;
+ u8 reserved0;
+ u32 bdb_offset;
+ u32 aim_offset[4];
+} __attribute__ ((packed));
+
+struct bdb_header {
+ u8 signature[16];
+ u16 version;
+ u16 header_size;
+ u16 bdb_size;
+};
+
+struct vbios_data {
+ u8 type; /* 0 == desktop, 1 == mobile */
+ u8 relstage;
+ u8 chipset;
+ u8 lvds_present:1;
+ u8 tv_present:1;
+ u8 rsvd2:6; /* finish byte */
+ u8 rsvd3[4];
+ u8 signon[155];
+ u8 copyright[61];
+ u16 code_segment;
+ u8 dos_boot_mode;
+ u8 bandwidth_percent;
+ u8 rsvd4; /* popup memory size */
+ u8 resize_pci_bios;
+ u8 rsvd5; /* is crt already on ddc2 */
+} __attribute__ ((packed));
+
+struct bdb_general_features {
+ /* bits 1 */
+ u8 panel_fitting:2;
+ u8 flexaim:1;
+ u8 msg_enable:1;
+ u8 clear_screen:3;
+ u8 color_flip:1;
+
+ /* bits 2 */
+ u8 download_ext_vbt:1;
+ u8 enable_ssc:1;
+ u8 ssc_freq:1;
+ u8 enable_lfp_on_override:1;
+ u8 disable_ssc_ddt:1;
+ u8 rsvd7:1;
+ u8 display_clock_mode:1;
+ u8 rsvd8:1; /* finish byte */
+
+ /* bits 3 */
+ u8 disable_smooth_vision:1;
+ u8 single_dvi:1;
+ u8 rsvd9:1;
+ u8 fdi_rx_polarity_inverted:1;
+ u8 rsvd10:4; /* finish byte */
+
+ /* bits 4 */
+ u8 legacy_monitor_detect;
+
+ /* bits 5 */
+ u8 int_crt_support:1;
+ u8 int_tv_support:1;
+ u8 int_efp_support:1;
+ u8 dp_ssc_enb:1; /* PCH attached eDP supports SSC */
+ u8 dp_ssc_freq:1; /* SSC freq for PCH attached eDP */
+ u8 rsvd11:3; /* finish byte */
+} __attribute__ ((packed));
+
+struct common_child_dev_config {
+ u16 handle;
+ u16 device_type;
+ u8 not_common1[12];
+ u8 dvo_port;
+ u8 i2c_pin;
+ u8 slave_addr;
+ u8 ddc_pin;
+ u16 edid_ptr;
+ u8 not_common3[6];
+ u8 dvo_wiring;
+ u8 not_common4[4];
+} __attribute__ ((packed));
+
+struct bdb_general_definitions {
+ /* DDC GPIO */
+ u8 crt_ddc_gmbus_pin;
+
+ /* DPMS bits */
+ u8 dpms_acpi:1;
+ u8 skip_boot_crt_detect:1;
+ u8 dpms_aim:1;
+ u8 rsvd1:5; /* finish byte */
+
+ /* boot device bits */
+ u8 boot_display[2];
+ u8 child_dev_size;
+
+ /*
+ * Device info:
+ * If TV is present, it'll be at devices[0].
+ * LVDS will be next, either devices[0] or [1], if present.
+ * On some platforms the number of device is 6. But could be as few as
+ * 4 if both TV and LVDS are missing.
+ * And the device num is related with the size of general definition
+ * block. It is obtained by using the following formula:
+ * number = (block_size - sizeof(bdb_general_definitions))/
+ * sizeof(child_device_config);
+ */
+ struct common_child_dev_config devices[0];
+} __attribute__ ((packed));
+
+struct bdb_driver_features {
+ u8 boot_dev_algorithm:1;
+ u8 block_display_switch:1;
+ u8 allow_display_switch:1;
+ u8 hotplug_dvo:1;
+ u8 dual_view_zoom:1;
+ u8 int15h_hook:1;
+ u8 sprite_in_clone:1;
+ u8 primary_lfp_id:1;
+
+ u16 boot_mode_x;
+ u16 boot_mode_y;
+ u8 boot_mode_bpp;
+ u8 boot_mode_refresh;
+
+ u16 enable_lfp_primary:1;
+ u16 selective_mode_pruning:1;
+ u16 dual_frequency:1;
+ u16 render_clock_freq:1; /* 0: high freq; 1: low freq */
+ u16 nt_clone_support:1;
+ u16 power_scheme_ui:1; /* 0: CUI; 1: 3rd party */
+ u16 sprite_display_assign:1; /* 0: secondary; 1: primary */
+ u16 cui_aspect_scaling:1;
+ u16 preserve_aspect_ratio:1;
+ u16 sdvo_device_power_down:1;
+ u16 crt_hotplug:1;
+ u16 lvds_config:2;
+ u16 tv_hotplug:1;
+ u16 hdmi_config:2;
+
+ u8 static_display:1;
+ u8 reserved2:7;
+ u16 legacy_crt_max_x;
+ u16 legacy_crt_max_y;
+ u8 legacy_crt_max_refresh;
+
+ u8 hdmi_termination;
+ u8 custom_vbt_version;
+} __attribute__ ((packed));
+
+struct bdb_lvds_options {
+ u8 panel_type;
+ u8 rsvd1;
+ /* LVDS capabilities, stored in a dword */
+ u8 pfit_mode:2;
+ u8 pfit_text_mode_enhanced:1;
+ u8 pfit_gfx_mode_enhanced:1;
+ u8 pfit_ratio_auto:1;
+ u8 pixel_dither:1;
+ u8 lvds_edid:1;
+ u8 rsvd2:1;
+ u8 rsvd4;
+} __attribute__ ((packed));
+
+struct bdb_sdvo_lvds_options {
+ u8 panel_backlight;
+ u8 h40_set_panel_type;
+ u8 panel_type;
+ u8 ssc_clk_freq;
+ u16 als_low_trip;
+ u16 als_high_trip;
+ u8 sclalarcoeff_tab_row_num;
+ u8 sclalarcoeff_tab_row_size;
+ u8 coefficient[8];
+ u8 panel_misc_bits_1;
+ u8 panel_misc_bits_2;
+ u8 panel_misc_bits_3;
+ u8 panel_misc_bits_4;
+} __attribute__ ((packed));
+
+
+#define BDB_GENERAL_FEATURES 1
+#define BDB_GENERAL_DEFINITIONS 2
+
+#define BDB_DRIVER_FEATURES 12
+#define BDB_SDVO_LVDS_OPTIONS 22
+#define BDB_SDVO_PANEL_DTDS 23
+#define BDB_LVDS_OPTIONS 40
+#define BDB_LVDS_LFP_DATA_PTRS 41
+#define BDB_LVDS_LFP_DATA 42
+
+#define BDB_SKIP 254
+
+static void parse_vbt(const void *vbt)
+{
+ const struct vbt_header *head = vbt;
+ const struct bdb_header *bdb;
+ int i;
+ const u8 *ptr;
+ int is_first_skip = 1;
+
+ if (memcmp(head->signature, "$VBT", 4) != 0) {
+ fprintf(stderr, "invalid VBT signature\n");
+ exit(1);
+ }
+ printf("signature: <%20.20s>\n", head->signature);
+ printf("version: %d.%02d\n", head->version / 100,
+ head->version % 100);
+ if (head->header_size != sizeof(struct vbt_header))
+ printf("header size: 0x%x\n", head->header_size);
+ printf("VBT size: 0x%x\n", head->vbt_size);
+ printf("VBT checksum: 0x%x\n", head->vbt_checksum);
+ if (head->reserved0)
+ printf("header reserved0: 0x%x\n", head->reserved0);
+ if (head->bdb_offset != sizeof(struct vbt_header))
+ printf("BDB offset: 0x%x\n", head->bdb_offset);
+
+ for (i = 0; i < 4; i++)
+ if (head->aim_offset[i])
+ printf("AIM[%d] offset: 0x%x\n", i,
+ head->aim_offset[i]);
+ bdb = (const void *) ((const char *) vbt + head->bdb_offset);
+
+ if (memcmp("BIOS_DATA_BLOCK ", bdb->signature, 16) != 0) {
+ fprintf(stderr, "invalid BDB signature:%s\n",
+ bdb->signature);
+ exit(1);
+ }
+ printf("BDB version: %d.%02d\n", bdb->version / 100,
+ bdb->version % 100);
+ if (bdb->header_size != sizeof(struct bdb_header))
+ printf("BDB header size: 0x%x\n", bdb->header_size);
+ if (bdb->bdb_size != head->vbt_size - head->bdb_offset)
+ printf("BDB size: 0x%x\n", bdb->bdb_size);
+ for (ptr = (const u8 *) bdb + bdb->header_size;
+ ptr < (const u8 *) bdb + bdb->bdb_size;) {
+ u16 secsz = (ptr[1] | (ptr[2] << 8));
+ u8 sectype = ptr[0];
+ const u8 *section = ptr + 3;
+
+ printf("section type %d, size 0x%x\n", sectype, secsz);
+ ptr += secsz + 3;
+ switch (sectype) {
+ case BDB_GENERAL_FEATURES:{
+ const struct bdb_general_features *sec =
+ (const void *) section;
+ printf("General features:\n");
+
+ if (sec->panel_fitting)
+ printf("\tpanel_fitting = 0x%x\n",
+ sec->panel_fitting);
+ if (sec->flexaim)
+ printf("\tflexaim = 0x%x\n",
+ sec->flexaim);
+ if (sec->msg_enable)
+ printf("\tmsg_enable = 0x%x\n",
+ sec->msg_enable);
+ if (sec->clear_screen)
+ printf("\tclear_screen = 0x%x\n",
+ sec->clear_screen);
+ if (sec->color_flip)
+ printf("\tcolor_flip = 0x%x\n",
+ sec->color_flip);
+ if (sec->download_ext_vbt)
+ printf
+ ("\tdownload_ext_vbt = 0x%x\n",
+ sec->download_ext_vbt);
+ printf("\t*enable_ssc = 0x%x\n",
+ sec->enable_ssc);
+ printf("\t*ssc_freq = 0x%x\n",
+ sec->ssc_freq);
+ if (sec->enable_lfp_on_override)
+ printf
+ ("\tenable_lfp_on_override = 0x%x\n",
+ sec->enable_lfp_on_override);
+ if (sec->disable_ssc_ddt)
+ printf
+ ("\tdisable_ssc_ddt = 0x%x\n",
+ sec->disable_ssc_ddt);
+ if (sec->rsvd7)
+ printf("\trsvd7 = 0x%x\n",
+ sec->rsvd7);
+ printf("\t*display_clock_mode = 0x%x\n",
+ sec->display_clock_mode);
+ if (sec->rsvd8)
+ printf("\trsvd8 = 0x%x\n",
+ sec->rsvd8);
+ printf("\tdisable_smooth_vision = 0x%x\n",
+ sec->disable_smooth_vision);
+ if (sec->single_dvi)
+ printf("\tsingle_dvi = 0x%x\n",
+ sec->single_dvi);
+ if (sec->rsvd9)
+ printf("\trsvd9 = 0x%x\n",
+ sec->rsvd9);
+ printf
+ ("\t*fdi_rx_polarity_inverted = 0x%x\n",
+ sec->fdi_rx_polarity_inverted);
+ if (sec->rsvd10)
+ printf("\trsvd10 = 0x%x\n",
+ sec->rsvd10);
+ if (sec->legacy_monitor_detect)
+ printf
+ ("\tlegacy_monitor_detect = 0x%x\n",
+ sec->legacy_monitor_detect);
+ printf("\t*int_crt_support = 0x%x\n",
+ sec->int_crt_support);
+ printf("\t*int_tv_support = 0x%x\n",
+ sec->int_tv_support);
+ if (sec->int_efp_support)
+ printf
+ ("\tint_efp_support = 0x%x\n",
+ sec->int_efp_support);
+ if (sec->dp_ssc_enb)
+ printf("\tdp_ssc_enb = 0x%x\n",
+ sec->dp_ssc_enb);
+ if (sec->dp_ssc_freq)
+ printf("\tdp_ssc_freq = 0x%x\n",
+ sec->dp_ssc_freq);
+ if (sec->rsvd11)
+ printf("\trsvd11 = 0x%x\n",
+ sec->rsvd11);
+ break;
+ }
+ case BDB_DRIVER_FEATURES:{
+ const struct bdb_driver_features *sec =
+ (const void *) section;
+ printf("\t*LVDS config: %d\n",
+ sec->lvds_config);
+ printf("\t*Dual frequency: %d\n",
+ sec->dual_frequency);
+
+ break;
+ }
+ case BDB_SDVO_LVDS_OPTIONS:{
+ const struct bdb_sdvo_lvds_options *sec =
+ (const void *) section;
+ printf("\t*Panel type: %d\n",
+ sec->panel_type);
+
+ break;
+ }
+ case BDB_GENERAL_DEFINITIONS:{
+ const struct bdb_general_definitions *sec =
+ (const void *) section;
+ int ndev;
+ printf("\t*CRT DDC GMBUS pin: %d\n",
+ sec->crt_ddc_gmbus_pin);
+
+ printf("\tDPMS ACPI: %d\n",
+ sec->dpms_acpi);
+ printf("\tSkip boot CRT detect: %d\n",
+ sec->skip_boot_crt_detect);
+ printf("\tDPMS aim: %d\n", sec->dpms_aim);
+ if (sec->rsvd1)
+ printf("\trsvd1: 0x%x\n",
+ sec->rsvd1);
+ printf("\tboot_display: { %x, %x }\n",
+ sec->boot_display[0],
+ sec->boot_display[1]);
+ if (sec->child_dev_size !=
+ sizeof(struct common_child_dev_config))
+ printf("\tchild_dev_size: %d\n",
+ sec->child_dev_size);
+ ndev = (secsz - sizeof(*sec)) /
+ sizeof(struct common_child_dev_config);
+ printf("\t%d devices\n", ndev);
+ for (i = 0; i < ndev; i++) {
+ printf("\t*device type: %x ",
+ sec->devices[i].
+ device_type);
+#define DEVICE_TYPE_INT_LFP 0x1022
+#define DEVICE_TYPE_INT_TV 0x1009
+#define DEVICE_TYPE_EFP_DVI_HOTPLUG_PWR 0x6052
+ switch (sec->devices[i].device_type) {
+ case DEVICE_TYPE_INT_LFP:
+ printf("(flat panel)\n");
+ break;
+ case DEVICE_TYPE_INT_TV:
+ printf("(TV)\n");
+ break;
+ case DEVICE_TYPE_EFP_DVI_HOTPLUG_PWR:
+ printf
+ ("(DVI)\n");
+ break;
+ case 0:
+ printf("(Empty)\n");
+ break;
+ default:
+ printf("(Unknown)\n");
+ break;
+ }
+ if (!sec->devices[i].device_type)
+ continue;
+ printf("\t *dvo_port: %x\n",
+ sec->devices[i].dvo_port);
+ printf("\t *i2c_pin: %x\n",
+ sec->devices[i].i2c_pin);
+ printf("\t *slave_addr: %x\n",
+ sec->devices[i].slave_addr);
+ printf("\t *ddc_pin: %x\n",
+ sec->devices[i].ddc_pin);
+ printf("\t *dvo_wiring: %x\n",
+ sec->devices[i].dvo_wiring);
+ printf("\t edid_ptr: %x\n",
+ sec->devices[i].edid_ptr);
+ }
+
+ break;
+ }
+ case BDB_SKIP:{
+ const struct vbios_data *sec =
+ (const void *) section;
+ if (!is_first_skip)
+ break;
+ is_first_skip = 0;
+ printf("\ttype: %x\n", sec->type);
+ printf("\trelstage: %x\n", sec->relstage);
+ printf("\tchipset: %x\n", sec->chipset);
+ printf(sec->lvds_present ? "\tLVDS\n"
+ : "\tNo LVDS\n");
+ printf(sec->tv_present ? "\tTV\n"
+ : "\tNo TV\n");
+ if (sec->rsvd2)
+ printf("\trsvd2: 0x%x\n",
+ sec->rsvd2);
+ for (i = 0; i < 4; i++)
+ if (sec->rsvd3[i])
+ printf
+ ("\trsvd3[%d]: 0x%x\n",
+ i, sec->rsvd3[i]);
+ printf("\tSignon: %.155s\n", sec->signon);
+ printf("\tCopyright: %.155s\n",
+ sec->copyright);
+ printf("\tCode segment: %x\n",
+ sec->code_segment);
+ printf("\tDOS Boot mode: %x\n",
+ sec->dos_boot_mode);
+ printf("\tBandwidth percent: %x\n",
+ sec->bandwidth_percent);
+ if (sec->rsvd4)
+ printf("\trsvd4: 0x%x\n",
+ sec->rsvd4);
+ printf("\tBandwidth percent: %x\n",
+ sec->resize_pci_bios);
+ if (sec->rsvd5)
+ printf("\trsvd5: 0x%x\n",
+ sec->rsvd5);
+ break;
+ }
+ }
+ }
+
+}
+
+static void parse_vbios(const void *ptr)
+{
+ const optionrom_header_t *oh;
+ oh = ptr;
+ if (oh->signature != 0xaa55) {
+ fprintf(stderr, "bad oprom signature: %x\n",
+ oh->signature);
+ return;
+ }
+ if (!oh->vbt_offset) {
+ fprintf(stderr, "no VBT found\n");
+ return;
+ }
+ parse_vbt((const char *) ptr + oh->vbt_offset);
+}
+
+int main(int argc, char **argv)
+{
+ const void *ptr;
+ int fd;
+ if (argc == 2) {
+ fd = open(argv[1], O_RDONLY);
+ ptr = mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);
+ } else {
+ fd = open("/dev/mem", O_RDONLY);
+ ptr = mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0xc0000);
+ }
+ if (ptr == MAP_FAILED) {
+ fprintf(stderr, "mmap failed: %s\n", strerror(errno));
+ return 1;
+ }
+ parse_vbios(ptr);
+ close(fd);
+ return 0;
+}