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arm-autonomy/xen-devicetree: Check for empty/invalid variable values

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Added check to xen-devicetree to validate values of required variables:
XEN_DEVICETREE_DOM0_ADDR
XEN_DEVICETREE_DOM0_SIZE
XEN_DEVICETREE_DOM0_MEM

Issue-Id: SCM-2037
Signed-off-by: Nathan Dunne <Nathan.Dunne@arm.com>
Change-Id: I31bfcdb9d064f6e91beb1500d0a18f2a30a42028
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Nathan Dunne
2021-01-28 10:06:39 +00:00
committed by Jon Mason
parent 82b31654b0
commit e0c74f3b3b
2 changed files with 31 additions and 3 deletions
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meta-arm-autonomy/documentation/xen-devicetree.md
+7 -3
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@@ -70,7 +70,9 @@ The following parameters are available:
This variable is only used if XEN_DEVICETREE_XEN_BOOTARGS has a value
containing "dom0_mem=${XEN_DEVICETREE_DOM0_MEM}" as the memory assigned to
dom0 is defined using Xen boot arguments.
This variable is set by default to "1024M".
This variable is set by default to "1024M", and cannot be empty.
The value can also be of the form "1024M,max:1024M", as documented here:
https://wiki.xenproject.org/wiki/Do%EF%BB%BFm0_Memory_%E2%80%94_Where_It_Has_Not_Gone
- XEN_DEVICETREE_DOM0_BOOTARGS: Boot arguments to pass to Dom0 Linux when
booting it.
@@ -84,7 +86,8 @@ The following parameters are available:
- XEN_DEVICETREE_DOM0_ADDR: This is the address from which the Linux kernel to
be used for Dom0 will be copied. When using u-boot, this is the address at
which you will load the kernel Image before starting Xen.
This variable is set by default to "0x80080000".
This variable is set by default to "0x80080000", and cannot be empty.
Values for this variable can be in hex (prefixed with '0x') or in decimal.
- XEN_DEVICETREE_DOM0_SIZE: This is the size of the kernel loaded at
${XEN_DEVICETREE_DOM0_ADDR}. Xen will copy this amount of data inside the
@@ -92,7 +95,8 @@ The following parameters are available:
size but can be bigger. You must be careful not to have a value too big as it
could slow down boot or copy other parts with it (like the DTB).
You might need to increase this if you use a kernel with a bundled initramfs.
This variable is set by default to "0x01000000".
This variable is set by default to "0x01000000" and cannot be empty.
Values for this variable can be in hex (prefixed with '0x') or in decimal.
- XEN_DEVICETREE_DTSI_MERGE: This variable contains the list of dtsi files that
must be included inside the generated DTB file. By default the only one