| Message ID | 20250828020732.981415-21-sjg@u-boot.org |
|---|---|
| State | New |
| Headers |
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Wed, 27 Aug 2025 20:08:12 -0600 (MDT) From: Simon Glass <sjg@u-boot.org> To: U-Boot Concept <concept@u-boot.org> Date: Wed, 27 Aug 2025 20:07:23 -0600 Message-ID: <20250828020732.981415-21-sjg@u-boot.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250828020732.981415-1-sjg@u-boot.org> References: <20250828020732.981415-1-sjg@u-boot.org> MIME-Version: 1.0 Message-ID-Hash: O4ZBDJM5SM7C5DTANDSD3TVWOA2JZM2Y X-Message-ID-Hash: O4ZBDJM5SM7C5DTANDSD3TVWOA2JZM2Y X-MailFrom: sjg@u-boot.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Heinrich Schuchardt <xypron.glpk@gmx.de>, Simon Glass <sjg@chromium.org> X-Mailman-Version: 3.3.10 Precedence: list Subject: [Concept] [PATCH 20/20] efi: app: Sync EFI reserved-memory to the devicetree List-Id: Discussion and patches related to U-Boot Concept <concept.u-boot.org> Archived-At: <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/O4ZBDJM5SM7C5DTANDSD3TVWOA2JZM2Y/> List-Archive: <https://lists.u-boot.org/archives/list/concept@u-boot.org/> List-Help: <mailto:concept-request@u-boot.org?subject=help> List-Owner: <mailto:concept-owner@u-boot.org> List-Post: <mailto:concept@u-boot.org> List-Subscribe: <mailto:concept-join@u-boot.org> List-Unsubscribe: <mailto:concept-leave@u-boot.org> Content-Type: text/plain; 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| Series |
efi: App and devicetree improvements
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Commit Message
Simon Glass
Aug. 28, 2025, 2:07 a.m. UTC
From: Simon Glass <sjg@chromium.org> Obtain EFI's view of reserved memory and ensure that everything mentioned there is present in a devicetree reserved-memory node. This ensures that the OS doesn't try to access memory it shouldn't. Signed-off-by: Simon Glass <sjg@chromium.org> --- lib/efi_client/efi_app.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/lib/efi_client/efi_app.c b/lib/efi_client/efi_app.c index 33ed3f2a874..6b8b53fbb41 100644 --- a/lib/efi_client/efi_app.c +++ b/lib/efi_client/efi_app.c @@ -354,6 +354,11 @@ int ft_system_setup(void *fdt, struct bd_info *bd) log_warning("failed to set up simplefb\n"); } + /* Compare EFI memory map with device tree reserved regions */ + ret = efi_mem_reserved_sync(fdt, true); + if (ret) + log_warning("failed to set up reserved memory\n"); + free(map); return 0;