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Re: [ImageBuilder] uboot-script-gen: fix arm64 xen u-boot image generation


  • To: Alejandro Vallejo <agarciav@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
  • From: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
  • Date: Wed, 16 Apr 2025 19:10:43 +0300
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  • Delivery-date: Wed, 16 Apr 2025 16:11:05 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>



On 16.04.25 17:26, Alejandro Vallejo wrote:
On Wed Apr 16, 2025 at 11:44 AM BST, Grygorii Strashko wrote:


On 16.04.25 04:03, Stefano Stabellini wrote:
On Mon, 14 Apr 2025, Grygorii Strashko wrote:
From: Grygorii Strashko <grygorii_strashko@xxxxxxxx>

The current code in generate_uboot_images() does not detect arm64 properly
and always generates ARM u-boot image. This causes Xen boot issues.

Fix it by searching for "ARM64" for AArch64 binary detection.

- mkimage -l xen.ub
Before:
Image Type:   ARM Linux Kernel Image (uncompressed)

After:
Image Type:   AArch64 Linux Kernel Image (uncompressed)

Signed-off-by: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
---
   scripts/uboot-script-gen | 6 +++---
   1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/uboot-script-gen b/scripts/uboot-script-gen
index a9f698f00fd1..c4d26caf5e0e 100755
--- a/scripts/uboot-script-gen
+++ b/scripts/uboot-script-gen
@@ -815,13 +815,13 @@ function linux_config()
generate_uboot_images()
   {
-    local arch=$(file -L $XEN | grep "ARM")
+    local arch=$(file -L $XEN | grep -o "ARM64")

My file -L gives:

for arm32: ARM OpenFirmware [...]
for arm64: Aarch64

So the ARM64 grep wouldn't work as intended. Is the version of `file'
that you are using really printing ARM64?

Hm, yes.

        file -L xen
        xen: Linux kernel ARM64 boot executable Image, little-endian, 4K pages

        file -v
        file-5.41

u-boot boot command:
         bootm 0x4EA00000 - 0x4EE00000


   If so, we can do:

    file -L $XEN | grep -E 'ARM64|Aarch64'

sure. I'll update.

Missing escape? I think it's needed even with single quotes.

   file -L $XEN | grep -E 'ARM64\|Aarch64'

No. It's extended regular expressions ("-E") no need for escape.
Also it works with both '' and "".



--
Best regards,
-grygorii



 


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