| Lee Leahy | c1e4f89 | 2016-01-07 11:24:24 -0800 | [diff] [blame^] | 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | <head> |
| 4 | <title>Board</title> |
| 5 | </head> |
| 6 | <body> |
| 7 | |
| 8 | <h1>x86 Board Development</h1> |
| 9 | <p> |
| 10 | Board development requires System-on-a-Chip (SoC) support. |
| 11 | The combined steps are listed |
| 12 | <a target="_blank" href="../x86Development.html">here</a>. |
| 13 | The development steps for the board are listed below: |
| 14 | </p> |
| 15 | <ol> |
| 16 | <li><a href="#RequiredFiles">Required Files</a></li> |
| 17 | </ol> |
| 18 | |
| 19 | |
| 20 | <hr> |
| 21 | <h1><a name="RequiredFiles">Required Files</a></h1> |
| 22 | <p> |
| 23 | Create the board directory as src/mainboard/<Vendor>/<Board>. |
| 24 | </p> |
| 25 | |
| 26 | <p> |
| 27 | The following files are required to build a new board: |
| 28 | </p> |
| 29 | <ol> |
| 30 | <li>Kconfig.name - Defines the Kconfig value for the board</li> |
| 31 | <li>Kconfig |
| 32 | <ol type="A"> |
| 33 | <li>Selects the SoC for the board and specifies the SPI flash size |
| 34 | <ol type="I"> |
| 35 | <li>BOARD_ROMSIZE_KB_<Size></li> |
| 36 | <li>SOC_<Vendor>_<Chip Family></li> |
| 37 | </ol> |
| 38 | </li> |
| 39 | <li>Declare the Kconfig values for: |
| 40 | <ol type="I"> |
| 41 | <li>MAINBOARD_DIR</li> |
| 42 | <li>MAINBOARD_PART_NUMBER</li> |
| 43 | <li>MAINBOARD_VENDOR</li> |
| 44 | </ol> |
| 45 | </li> |
| 46 | </ol> |
| 47 | </li> |
| 48 | <li>devicetree.cb - Enable root bridge and serial port |
| 49 | <ol type="A"> |
| 50 | <li>The first line must be "chip soc/Intel/<soc family>"; |
| 51 | this path is used by the generated static.c to include the chip.h |
| 52 | header file |
| 53 | </li> |
| 54 | </ol> |
| 55 | </li> |
| 56 | <li>romstage.c |
| 57 | <ol type="A"> |
| 58 | <li>Add routine mainboard_romstage_entry which calls romstage_common</li> |
| 59 | </ol> |
| 60 | </li> |
| 61 | <li>Configure coreboot build: |
| 62 | <ol type="A"> |
| 63 | <li>Set LOCALVERSION</li> |
| 64 | <li>FLASHMAP_OFFSET = 0x00700000</li> |
| 65 | <li>Select vendor for the board</li> |
| 66 | <li>Select the board</li> |
| 67 | <li>CBFS_SIZE = 0x00100000</li> |
| 68 | <li>Set the CPU_MICROCODE_CBFS_LEN</li> |
| 69 | <li>Set the CPU_MICROCODE_CBFS_LOC</li> |
| 70 | <li>Set the FSP_IMAGE_ID_STRING</li> |
| 71 | <li>Set the FSP_LOC</li> |
| 72 | <li>Disable GOP_SUPPORT</li> |
| 73 | <li>No payload</li> |
| 74 | <li>Choose the default value for all other options</li> |
| 75 | </ol> |
| 76 | </li> |
| 77 | </ol> |
| 78 | |
| 79 | |
| 80 | <hr> |
| 81 | <p>Modified: 31 January 2016</p> |
| 82 | </body> |
| 83 | </html> |