Denis 'GNUtoo' Carikli
585f4d359a
It is possible to install GNU Boot on I945 Thinkpads without opening the computer even if the nonfree bios sets the bootblock region (the last 64K of the flash chip) read-only. The flash chip looks like that: +----- -----+---------------------------+-------------------------+ | ... | Secondary bootblock (64k) | Primary bootblock (64k) | +----- -----+---------------------------+-------------------------+ 0 0x1e0000 2MiB To bypass the read-only restriction we use an utility (bucts) that tells the hardware to swap the primary bootblock with the secondary one for the next boot. We then have to disable that swap and reflash again. CONFIG_INTEL_ADD_TOP_SWAP_BOOTBLOCK generates the two bootblocks directly in coreboot so we don't need to use special commands to do that anymore. In addition the MacBook 1.1 and 2.1 are known not to have such read-only restrictions so they don't need to have CONFIG_INTEL_ADD_TOP_SWAP_BOOTBLOCK enabled. Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org> Acked-by: Adrien 'neox' Bourmault <neox@gnu.org> |
||
|---|---|---|
| .. | ||
| coreboot | ||
| dependencies | ||
| grub | ||
| memtest86plus/patch | ||
| packages | ||
| scripts | ||
| seabios | ||
| u-boot/default | ||