tag:blogger.com,1999:blog-24744907.post4270755374023862536..comments2023-06-07T01:04:59.159-07:00Comments on UEFI: UEFI 2.4 Review, Part 8: NVMe Device PathsTim Lewishttp://www.blogger.com/profile/13740223047141525668noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-24744907.post-73686966401245476912015-12-09T12:53:40.694-08:002015-12-09T12:53:40.694-08:00Anyway on an older UEFI bios that doesnt support n...Anyway on an older UEFI bios that doesnt support nvme booting to force boot the nvme drive? I have modded the bios on my p8Z68 to load the NVME ffs files from a more recent mainboard and now can see the Intel 750 in the bios boot menu but nothing happens when selected. I assume the correct boot handle isn't being returned. How can I force it?<br /><br />Thanksdavidm671https://www.blogger.com/profile/13724049139824702902noreply@blogger.comtag:blogger.com,1999:blog-24744907.post-67385052044672853672013-10-02T09:30:44.414-07:002013-10-02T09:30:44.414-07:00There are very few drivers which produce LOAD_FILE...There are very few drivers which produce LOAD_FILE, usually only for OEM-specific cases, or PXE boot. Normally, after your driver creates a Block I/O, the function ConnectController() will be run by the BIOS when booting. This function will pass the handle of your device (on which you installed the device path and block I/O) to all other drivers. Normally, Disk I/O will be installed, then the Partition driver will find the partitions on the device and a new Block I/O and DIsk I/O will be installed for each partition. Most EDK2 implementations support El Torito (for CD/DVD) and FAT32. Tim Lewishttps://www.blogger.com/profile/13740223047141525668noreply@blogger.comtag:blogger.com,1999:blog-24744907.post-42145622908253082282013-10-02T07:54:24.584-07:002013-10-02T07:54:24.584-07:00Tim,
I can't understud how it work.
I created...Tim,<br />I can't understud how it work.<br /><br />I created new device path whis it. I wrote it in Boot###. I fix BootOrder. But how can I add LOAD_FILE_PROTOCOL to this node? What does create that node? How Boot Manager get this node from device path?<br /><br />Maybe there are any examples?Anonymoushttps://www.blogger.com/profile/01783142316498133292noreply@blogger.comtag:blogger.com,1999:blog-24744907.post-44109979719113962582013-09-21T13:40:34.726-07:002013-09-21T13:40:34.726-07:00Not sure what you mean. I have seen booting operat...Not sure what you mean. I have seen booting operating systems from NVMe today. From a UEFI 2.4 perspective, this is all done in the driver I mentioned. From an OS perspective, there must be an OS-level host controller adapter driver. Tim Lewishttps://www.blogger.com/profile/13740223047141525668noreply@blogger.comtag:blogger.com,1999:blog-24744907.post-37987022135551729772013-09-20T21:03:14.786-07:002013-09-20T21:03:14.786-07:00Tim, I mean the real UEFI nvme implementation. Is ...Tim, I mean the real UEFI nvme implementation. Is there any available UEFI nvme boot from nvme devices? I spoke with some hardware vendors about nvme boot and they said such feature very likely would be available in one year for now.Anonymoushttps://www.blogger.com/profile/00937568601326615362noreply@blogger.comtag:blogger.com,1999:blog-24744907.post-69231360451392083582013-09-19T13:31:20.157-07:002013-09-19T13:31:20.157-07:00Igor,
Currently EDK2 already supports the standard...Igor,<br />Currently EDK2 already supports the standard PCI NVMe host bus adapter, at MdeModulePkg/Bus/Pci/NvmExpressDxe, including an implementation of pass-thru.Tim Lewishttps://www.blogger.com/profile/13740223047141525668noreply@blogger.comtag:blogger.com,1999:blog-24744907.post-38231667868645941012013-09-19T11:35:30.069-07:002013-09-19T11:35:30.069-07:00Tim,
When will be real UEFI implementations, which...Tim,<br />When will be real UEFI implementations, which will contain NVME bus driver? When could we start to use NVME UEFI boot?<br />ThanksAnonymoushttps://www.blogger.com/profile/00937568601326615362noreply@blogger.com