search for: read_sector_phdr

This patches add support for dynamic sectors to GPT MBR code. First 3 patches are trick and optimizations to gain some space for the forth patch. I have a modified version of SeaBIOS, some code and some script o test it I'll send on a different mail.

...per cylinder */ /* Save sectors/cylinder on the stack */ - pushw %dx /* -4(%bp) High word */ - pushw %ax /* -6(%bp) Low word */ + pushw %dx /* -34(%bp) High word */ + pushw %ax /* -36(%bp) Low word */ /* Load partition table header */ xorl %eax,%eax @@ -121,15 +138,14 @@ next: call read_sector_phdr /* Number of partition sectors */ - /* We assume the partition table is 32K or less, and that - the sector size is 512. */ + /* We assume the partition table is 32K or less */ /* Note: phdr == 6(%bp) */ movw (80+6)(%bp),%cx /* NumberOfPartitionEntries */ movw (84+6)(%bp),%ax /* SizeO...

This set of patches add some support for sector size >512. Currently it fixes extlinux, MBR for GPT and ext partitions. Other code is unaffected. This set of patches has been tested on a read Dell machine running a beta firmware.