100 lines
2.6 KiB
Markdown
100 lines
2.6 KiB
Markdown
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# Squared
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## Overview
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### Top
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![][overview_top]
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### Bottom
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![][overview_bottom]
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## Mainboard components
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### Platform
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```eval_rst
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+------------------+----------------------------------+
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| CPU | Intel Atom, Celeron, Pentium |
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+------------------+----------------------------------+
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| PCH | Intel Apollo Lake |
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+------------------+----------------------------------+
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| EC / Super IO | N/A |
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+------------------+----------------------------------+
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| Coprocessor | Intel TXE 3.0 |
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+------------------+----------------------------------+
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```
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### Flash chip
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```eval_rst
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+---------------------+------------+
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| Type | Value |
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+=====================+============+
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| Socketed flash | no |
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+---------------------+------------+
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| Vendor | Winbond |
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+---------------------+------------+
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| Model | W25Q128FW |
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+---------------------+------------+
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| Voltage | 1.8V |
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+---------------------+------------+
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| Size | 16 MiB |
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+---------------------+------------+
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| Package | SOIC-8 |
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+---------------------+------------+
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| Write protection | No |
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+---------------------+------------+
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| Internal flashing | No |
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+---------------------+------------+
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| In curcuit flashing | Yes |
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+---------------------+------------+
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```
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## Board status
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### Working
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- bootblock, romstage, ramstage
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- Serial console UART0, UART1
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- SPI flash console
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- iGPU init with libgfxinit
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- LAN1, LAN2
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- USB2, USB3
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- HDMI, DisplayPort
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- eMMC
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- flashing with flashrom externally
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### Work in progress
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- Documentation
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- ACPI
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### Not working / Known issues
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- Generally SeaBIOS works, but it can't find the CBFS region and therefore it can't load seavgabios. This is because of changes at the Apollolake platform.
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### Untested
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- GPIO pin header
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- 60 pin EXHAT
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- Camera interface
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- MIPI-CSI2 2-lane (2MP)
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- MIPI-CSI2 4-lane (8MP)
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- SATA3
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- USB3 OTG
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- embedded DisplayPort
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- M.2 slot
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- mini PCIe
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- flashing with flashrom internally using Linux
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## Building and flashing coreboot
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### Building
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```bash
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make distclean
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touch .config
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./util/scripts/config --enable VENDOR_UP
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./util/scripts/config --enable BOARD_UP_SQUARED
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./util/scripts/config --enable NEED_IFWI
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./util/scripts/config --enable HAVE_IFD_BIN
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./util/scripts/config --set-str IFWI_FILE_NAME "<path_to_your_bios_region>"
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./util/scripts/config --set-str IFD_BIN_PATH "<path_to_your_ifd_region>"
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make olddefconfig
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```
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### Flashing
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[overview_top]: top.jpg
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[overview_bottom]: bottom.jpg
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