3138b44c90
* disk/ata.c (grub_ata_wait_status): Replace by ... (grub_ata_wait_not_busy): ... this function. Checks only BSY bit, other status bits may be invalid while BSY is asserted. (grub_ata_check_ready): New function. (grub_ata_cmd): Removed. (grub_ata_wait_drq): New function. (grub_ata_strncpy): Remove inline. (grub_ata_pio_read): Reduce to actual block transfer. BSY wait and error check now done by grub_ata_wait_drq (). (grub_ata_pio_write): Likewise. (grub_atapi_identify): Set DEV before check for !BSY. Use grub_ata_wait_drq () to wait for data. (grub_ata_device_initialize): Add status register check to detect missing SATA slave devices. Add debug messages. (grub_atapi_wait_drq): Use grub_ata_wait_not_busy (). (grub_atapi_packet): Set DEV before check for !BSY. Replace transfer loop by grub_ata_pio_write (). (grub_ata_identify): Set DEV before check for !BSY. Use grub_ata_wait_drq () to wait for data. (grub_ata_setaddress): Set DEV before check for !BSY. (grub_ata_readwrite): Remove duplicate code, handle batch/rest and read/write in one loop. Fix invalid command on write. Fix incomplete command on (size % batch) == 0. Add missing error check after write of last block. Add debug messages. (grub_atapi_read): Replace transfer loop by grub_ata_pio_read ().
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. For now, there is not much documentation yet. Please look at the GRUB Wiki <http://grub.enbug.org> for testing procedures.