printk(KERN_ERR PFX "Woah! Couldn't map the EFI system table.\n");
if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
printk(KERN_ERR PFX "Woah! EFI system table signature incorrect\n");
- if ((efi.systab->hdr.revision ^ EFI_SYSTEM_TABLE_REVISION) >> 16 != 0)
- printk(KERN_ERR PFX
- "Warning: EFI system table major version mismatch: "
- "got %d.%02d, expected %d.%02d\n",
+ if ((efi.systab->hdr.revision >> 16) == 0)
+ printk(KERN_ERR PFX "Warning: EFI system table version "
+ "%d.%02d, expected 1.00 or greater\n",
efi.systab->hdr.revision >> 16,
- efi.systab->hdr.revision & 0xffff,
- EFI_SYSTEM_TABLE_REVISION >> 16,
- EFI_SYSTEM_TABLE_REVISION & 0xffff);
+ efi.systab->hdr.revision & 0xffff);
+
/*
* Grab some details from the system table
*/