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disk: Improve performance on UEFI

This commit is contained in:
mintsuki 2021-11-02 05:16:42 +01:00
parent c5dfd77fba
commit c67d70d3bf
1 changed files with 7 additions and 2 deletions
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9
stage23/drivers/disk.s2.c
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@ -443,8 +443,13 @@ void disk_create_index(void) {
block->sect_count = drive->Media->LastBlock + 1;
block->max_partition = -1;
// TODO: get fastest xfer size also for UEFI?
block->fastest_xfer_size = 8;
if (drive->Revision >= EFI_BLOCK_IO_PROTOCOL_REVISION3) {
block->fastest_xfer_size = drive->Media->OptimalTransferLengthGranularity;
}
if (block->fastest_xfer_size == 0) {
block->fastest_xfer_size = 64;
}
if (gpt_get_guid(&block->guid, block)) {
block->guid_valid = true;