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!

Hardware

Status

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.

Tested:

Works with GNU/Linux and GNU/Linux-libre

Not tested:

Proprietary Components

Code

Flashing

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.
...

Board:apple/macbook21