From: Sakar Arora <sakar.arora@nxp.com>
To: "edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Subject: Exporting discontiguous System Memory to EFI STUB
Date: Thu, 15 Sep 2016 08:45:10 +0000 [thread overview]
Message-ID: <VI1PR04MB21733363A608B9F048849E8AF8F00@VI1PR04MB2173.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <VI1PR04MB2173B4CEB9AB3ED7B4DAEC93F8F00@VI1PR04MB2173.eurprd04.prod.outlook.com>
Hi
This is in aarch64 UEFI context.
The efi stub code ignores any memory nodes in the device tree. It only relies on the UEFI memory map for memory info.
In such a scenario, how can one export discontiguous regions of system memory to the efi stub? There seems to be only one way to inform UEFI about system memory, via PcdSystemMemoryBase.
Looking at the latest Arm Juno code, it seems like building a memory resource descriptor hob, for the extra memory region, does the trick. Would that be the best way to go?
Suggestions please.
Thanks,
Sakar
next parent reply other threads:[~2016-09-15 8:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <VI1PR04MB2173B4CEB9AB3ED7B4DAEC93F8F00@VI1PR04MB2173.eurprd04.prod.outlook.com>
2016-09-15 8:45 ` Sakar Arora [this message]
2016-09-15 9:01 ` Exporting discontiguous System Memory to EFI STUB Laszlo Ersek
2016-09-15 11:31 ` Ard Biesheuvel
2016-09-21 9:10 ` Bhupesh Sharma
2016-09-21 11:17 ` Laszlo Ersek
2016-09-21 11:20 ` Ard Biesheuvel
2016-09-21 11:32 ` Laszlo Ersek
2016-09-21 11:32 ` Bhupesh Sharma
2016-09-21 11:36 ` Ard Biesheuvel
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