mb/acer: Add Acer Aspire VN7-572G

Add initial support for Acer Aspire VN7-572G (Skylake-U).

Also note that there are two similar boards, Aspire VN7-792G and
Aspire VN7-592G; both are Skylake-H. These are not supported (yet).
Do not flash images intended for Aspire VN7-572G on those boards: the
GPIOs and HSIO routing will be different and may risk damage
to the hardware.

Working:
- Payload
  - TianoCore (custom fork of MrChromebox's UefiPayloadPkg; edk2-202102)
- OS
  - Fedora 35 (kernel 5.14.15)
  - Windows 10 20H1 (bugs present: battery paging fixed; abandoning testing)
- Both DIMM slots
- eDP and HDMI display (VBT partially matches vendor's configuration)
  - with FSP GOP
  - with IntelGopDriver (in payload: TianoCore)
  - with libgfxinit
- Audio
  - Speakers and headphone jack
  - Internal microphone
  - HDMI audio
- Devices
  - PCIe and SATA (unable to test M.2 SATA)
    - Discrete graphics, Ethernet and WiFi
  - USB ports (unable to test type-C, touchscreen and fingerprint reader)
    - Includes internal devices (Bluetooth, SD card reader and webcam)
  - TPM
  - Keyboard and touchpad
- Optimus (see CB:28380, CB:40625 and CB:40628)
- ACPI functionality
  - S3 suspend and resume
  - EC support
- Internal flashing with flashrom
- CMOS settings

In progress:
- EC SMM functionality

Not working:
- vboot (breaks boot): See CB:58249

Notes:
- `tpm2_pcrallocate` to enable SHA256 PCR bank

Not implemented:
- WMI

Change-Id: I6340116abfeb2fbd280d143b74d323e4da3566f6
Signed-off-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35523
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

2 files changed, 22 insertions, 0 deletions

diff --git a/src/mainboard/acer/aspire_vn7_572g/include/ec.h b/src/mainboard/acer/aspire_vn7_572g/include/ec.h
new file mode 100644
index 0000000000..49651decfb
--- /dev/null
+++ b/src/mainboard/acer/aspire_vn7_572g/include/ec.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef MAINBOARD_EC_H
+#define MAINBOARD_EC_H
+
+uint8_t ec_cmd_90_read(uint8_t addr);
+void ec_cmd_91_write(uint8_t addr, uint8_t data);
+uint8_t ec_cmd_94_query(void);
+uint8_t ec_idx_read(uint16_t addr);
+void ec_idx_write(uint16_t addr, uint8_t data);
+/* TODO: Check if ADC is valid. */
+uint16_t read_ec_adc_converter(uint8_t adc);
+
+#endif
diff --git a/src/mainboard/acer/aspire_vn7_572g/include/gpio.h b/src/mainboard/acer/aspire_vn7_572g/include/gpio.h
new file mode 100644
index 0000000000..ed8518ed64
--- /dev/null
+++ b/src/mainboard/acer/aspire_vn7_572g/include/gpio.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef MAINBOARD_GPIO_H
+#define MAINBOARD_GPIO_H
+
+void mainboard_config_stage_gpios(void);
+
+#endif