The wiki is being retired!
Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!
Tested on MacBook2,1 (Mid 2007) 2.0GHz. Might work as well, but not tested on MacBook2,1 (Late 2006) and MacBook1,1 possibly with small code modifications. Issues:
- OS X and Windows dont work yet.
- Works with GNU/Linux and GNU/Linux-libre
Is easy with the vendor BIOS version MB21.00A5.B07 (EFI 1.1) installed.
Identify Flash The Chip
Make sure flashrom can identify the flash chip:
# flashrom --verbose --programmer internal:laptop=force_I_want_a_brick >flashrom_info.log
The output should involve:
... DMI string system-manufacturer: "Apple Inc." DMI string system-product-name: "MacBook2,1" DMI string system-version: "1.0" DMI string baseboard-manufacturer: "Apple Inc." DMI string baseboard-product-name: "Mac-F4208CAA" DMI string baseboard-version: "PVT" DMI string chassis-type: "Notebook" Laptop detected via DMI. Found chipset "Intel ICH7M" with PCI ID 8086:27b9. Enabling flash write... ... Probing for SST SST25VF016B, 2048 kB: probe_spi_rdid_generic: id1 0xbf, id2 0x2541 Found SST flash chip "SST25VF016B" (2048 kB, SPI) at physical address 0xffe00000. Chip status register is 0x1c. Chip status register: Block Protect Write Disable (BPL) is not set Chip status register: Auto Address Increment Programming (AAI) is not set Chip status register: Block Protect 3 (BP3) is not set Chip status register: Block Protect 2 (BP2) is set Chip status register: Block Protect 1 (BP1) is set Chip status register: Block Protect 0 (BP0) is set Chip status register: Write Enable Latch (WEL) is not set Chip status register: Write In Progress (WIP/BUSY) is not set Resulting block protection : all ... Found SST flash chip "SST25VF016B" (2048 kB, SPI). No operations were specified. ...