Transfer of firmware updates using an in-band interface

1. An Information Handling System (IHS), comprising:

a processor; and

a memory coupled to the processor, the memory having program instructions stored thereon that, upon execution, cause the IHS to:

receive a firmware update package having a payload;

create a namespace in a persistent memory;

copy the payload to a segment of the persistent memory associated with the namespace;

write, to an Extensible Firmware Interface (EFI) variable, an Emulator Device Path (EDP) pointing to the payload;

compare a device path map against the EDP using the Basic Input/Output System (BIOS);

in response to a match between the EDP and a path in the device path map, obtain the payload using the BIOS and update a corresponding device firmware using the payload; and

reboot.

2. The IHS of claim 1 , wherein to receive, create, copy, and write, the IHS uses an Operating System (OS).

3. The IHS of claim 1 , wherein the persistent memory comprises a non-volatile dual in-line memory module (NVDIMM) or storage class memory (SCM).

4. The IHS of claim 1 , wherein the EDP is provided by a kernel driver.

5. A memory storage device having program instructions stored thereon that, upon execution by one or more processors of an Information Handling System (IHS), cause the IHS to:

receive a firmware update package having a payload;

create a namespace in a persistent memory;

copy the payload to a segment of the persistent memory associated with the namespace;

write, to an Extensible Firmware Interface (EFI) variable, an Emulator Device Path (EDP) pointing to the payload;

compare a device path map against the EDP using a Basic Input/Output System (BIOS);

in response to a match between the EDP and a path in the device path map, obtain the payload using the BIOS and update a corresponding device firmware using the payload; and

reboot.

6. The memory storage device of claim 5 , wherein to receive, create, copy, and write, the IHS uses an Operating System (OS).

7. The memory storage device of claim 5 , wherein the persistent memory comprises a non-volatile dual in-line memory module (NVDIMM) or storage class memory (SCM).

8. The memory storage device of claim 5 , wherein the EDP is provided by a kernel driver.

9. A method, comprising:

receiving a firmware update package having a payload;

creating a namespace in a persistent memory;

copying the payload to a segment of the persistent memory associated with the namespace;

writing, to an Extensible Firmware Interface (EFI) variable, an Emulator Device Path (EDP) pointing to the payload;

comparing a device path map against the EDP using a Basic Input/Output System (BIOS);

in response to the EDP matching a path in the device path map, obtaining the payload using the BIOS and updating a corresponding device firmware using the payload; and

rebooting.

10. The method of claim 9 , wherein the receiving, creating, copying, and writing are performed by an Operating System (OS).

11. The method of claim 9 , wherein the EDP is provided by a kernel driver.