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hpcorebootfe80/util/intelvbttool/intelvbttool.c

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/*
* 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.
*/
#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;
off_t offset;
if (argc == 2) {
fd = open(argv[1], O_RDONLY);
offset = 0;
} else {
fd = open("/dev/mem", O_RDONLY);
offset = 0xc0000;
}
if (fd < 0) {
fprintf(stderr, "open failed: %s\n", strerror(errno));
return 1;
}
ptr = mmap(0, 65536, PROT_READ, MAP_SHARED, fd, offset);
if (ptr == MAP_FAILED) {
fprintf(stderr, "mmap failed: %s\n", strerror(errno));
return 1;
}
parse_vbios(ptr);
close(fd);
return 0;
}
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