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authorSoby Mathew <soby.mathew@arm.com>2020-01-29 09:51:21 +0000
committerTrustedFirmware Code Review <review@review.trustedfirmware.org>2020-01-29 09:51:21 +0000
commit8efec9e097781fb9598f7923b3ae9a8487a8635f (patch)
treeccfe3ea82cd15e0e41084bf6c7665629c44e40c7 /docs
parentc1f118f1a724108bed7be2822244e6a06a28ab93 (diff)
parent61cbd41d7914032d3df1e49c1c1efbe2f9cb4c39 (diff)
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Merge changes I0fb7cf79,Ia8eb4710 into integration
* changes: qemu: Implement qemu_system_off via semihosting. qemu: Support ARM_LINUX_KERNEL_AS_BL33 to pass FDT address.
Diffstat (limited to 'docs')
-rw-r--r--docs/plat/qemu.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/plat/qemu.rst b/docs/plat/qemu.rst
index 4ebe64b85..a4c5bec71 100644
--- a/docs/plat/qemu.rst
+++ b/docs/plat/qemu.rst
@@ -10,6 +10,10 @@ loop to be released by normal world via PSCI.
BL2 edits the Flattened Device Tree, FDT, generated by QEMU at run-time to
add a node describing PSCI and also enable methods for the CPUs.
+If ``ARM_LINUX_KERNEL_AS_BL33`` is set to 1 then this FDT will be passed to BL33
+via register x0, as expected by a Linux kernel. This allows a Linux kernel image
+to be booted directly as BL33 rather than using a bootloader.
+
An ARM64 defconfig v4.5 Linux kernel is known to boot, FDT doesn't need to be
provided as it's generated by QEMU.