96ae7a3a2d
It is similar to X200s, with U-series CPU, slightly different gpio
setup, no docking support, and no superio chip.
Tested:
- CPU Core 2 Duo U9400
- Slotted DIMM 4GiB*2 from samsung
- Camera
- pci-e slots
- sata and usb2
- libgfxinit-based graphic init
- NVRAM options for North and South bridges
- Sound
- Thinkpad EC
- S3
- Linux 4.19.67-2 within Debian GNU/Linux stable, loaded from
Linux payload (Heads) and Seabios.
TODO: repurpose and/or rename flag H8_DOCK_EARLY_INIT (introduced in
CB:4294 ) for h8-using devices without a dock.
Change-Id: Ic6a6059ccf15dd2e43ed4fc490c1d3c36aa1e817
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36093
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2017 arthur@aheymans.xyz
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdint.h>
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#include <commonlib/helpers.h>
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#include <console/console.h>
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#include <northbridge/intel/gm45/gm45.h>
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#include <drivers/intel/gma/opregion.h>
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static const struct blc_pwm_t blc_entries[] = {
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/* corrected to 320MHz CDClk, vendor set 753; works fine at both: */
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{"LTD121EQ3B", 447},
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{"LTD121EWVB", 165},
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{"LTD133EQ1B", 264}, /* Found on an X301 */
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{"B121EW03 V6 ", 165},
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/* datasheets: between 100 and 20k, typical 200 */
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/* TESTED: works best at 400 */
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{"B121EW09 V3 ", 400},
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{"HV121WX4-120", 110}, /* Aftermarket AFFS lcd, works well at low pwm */
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{"LTN121AT03001", 110},
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{"LTN121AP03001", 750},
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/* TODO: untested panels found on thinkwiki */
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/* Generally CCFL runs best at lower PWM */
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/* {"B121EW09 V2 ", 450}, */
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/* {"N121IB-L05", 450}, */
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{"LP121WX3-TLC1", 400}, /* TESTED to work best at this value */
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/* {"LP121WX3-TLA1" 450}, */
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/* {"B121EW03 V3 " 110}, */
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/* {"LTN121AP02001" 110}, */
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};
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int get_blc_values(const struct blc_pwm_t **entries)
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{
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*entries = blc_entries;
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return ARRAY_SIZE(blc_entries);
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}
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const char *mainboard_vbt_filename(void)
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{
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u16 pwm_freq;
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pwm_freq = get_blc_pwm_freq_value(NULL);
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if (pwm_freq == 0) {
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printk(BIOS_DEBUG,
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"GMA: Display backlight type not found, assuming LED\n");
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return "data_led.vbt";
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} else if (pwm_freq > 200) {
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printk(BIOS_DEBUG, "GMA: Using LED backlight VBT\n");
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return "data_led.vbt";
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} else {
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printk(BIOS_DEBUG, "GMA: Using CCFL backlight VBT\n");
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return "data_ccfl.vbt";
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}
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}
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