configs/aarch64_efi: bump kernel version and update

- Bump kernel to version 5.11.16.

We remove the hardcoded ttyAMA0 and rely on the firmware to discover our
console. This enables serial console on systems, which do not have an Arm
pl011 UART.

We switch to GPT disklabel and discover our root filesystem using its
PARTLABEL. This enables booting from more media, such as HDD, SD card or
USB.

We update the readme, which hinted that ACPI was mandatory. This is not
strictly the case as we can also boot with a dtb and/or a U-Boot based
firmware, with no ACPI. While at it, mention EBBR, SystemReady and explain
how to build and use a U-Boot-based qemu firmware.

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Cc: Erico Nunes <nunes.erico@gmail.com>
Reviewed-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

diff --git a/board/aarch64-efi/genimage-efi.cfg b/board/aarch64-efi/genimage-efi.cfg
index f93ab9d64f56ec18dd1027e3a31d3c7eddd08a8b..34cca1d64e29d72529cf0f7f4fcae0c068eade8f 100644 (file)
--- a/board/aarch64-efi/genimage-efi.cfg
+++ b/board/aarch64-efi/genimage-efi.cfg
@@ -14,17 +14,19 @@ image efi-part.vfat {
 }
 
 image disk.img {
-
   hdimage {
+    gpt = true
   }
 
   partition boot {
-    partition-type = 0xEF
     image = "efi-part.vfat"
+    partition-type-uuid = c12a7328-f81f-11d2-ba4b-00a0c93ec93b
+    offset = 32768
+    bootable = true
   }
 
   partition root {
-    partition-type = 0x83
+    partition-type-uuid = b921b045-1df0-41c3-af44-4c6f280d3fae
     image = "rootfs.ext2"
   }
 }

diff --git a/board/aarch64-efi/grub.cfg b/board/aarch64-efi/grub.cfg
index ab88da91b94aa48c1c408d4f018b65842efa345e..d99e19c4cd52721c10bbcce0feb7816357f3088c 100644 (file)
--- a/board/aarch64-efi/grub.cfg
+++ b/board/aarch64-efi/grub.cfg
@@ -2,5 +2,5 @@ set default="0"
 set timeout="5"
 
 menuentry "Buildroot" {
-       linux /Image root=/dev/vda2 rootwait console=ttyAMA0
+       linux /Image root=PARTLABEL=root rootwait
 }

diff --git a/board/aarch64-efi/readme.txt b/board/aarch64-efi/readme.txt
index 65a6345b6ce566b15791a2de1bc525616e8b9e00..164993eea49e8ad1c19a9417314236cdc70c2ddb 100644 (file)
--- a/board/aarch64-efi/readme.txt
+++ b/board/aarch64-efi/readme.txt
@@ -1,6 +1,10 @@
 
 The aarch64_efi_defconfig allows to build a minimal Linux system that
-can boot on all AArch64 servers providing an EFI firmware and ACPI.
+can boot on all AArch64 servers providing an EFI firmware.
+
+This includes all Arm EBBR[1] compliant systems, and all Arm SystemReady[2]
+compliant systems for example.
+
 
 Building and booting
 ====================
@@ -32,3 +36,18 @@ Note that </path/to/QEMU_EFI.fd> needs to point to a valid aarch64 UEFI
 firmware image for qemu.
 It may be provided by your distribution as a edk2-aarch64 or AAVMF
 package, in path such as /usr/share/edk2/aarch64/QEMU_EFI.fd .
+
+U-Boot based qemu firmware
+==========================
+
+A qemu firmware with support for UEFI based on U-Boot can be built following
+the instructions in [3], with qemu_arm64_defconfig.
+
+This should give you a nor_flash.bin, which you can use with qemu as an
+alternative to QEMU_EFI.fd. You will also need to change the machine
+specification to "-M virt,secure" on qemu command line, to enable TrustZone
+support, and you will need to increase the memory with "-m 1024".
+
+[1]: https://github.com/ARM-software/ebbr
+[2]: https://developer.arm.com/architectures/system-architectures/arm-systemready
+[3]: https://github.com/glikely/u-boot-tfa-build

diff --git a/configs/aarch64_efi_defconfig b/configs/aarch64_efi_defconfig
index 99600575edf8f3a683981964ba24b8825d4a7062..6cb8d1fac21ca6c4b19a7454a500dc2ec387f596 100644 (file)
--- a/configs/aarch64_efi_defconfig
+++ b/configs/aarch64_efi_defconfig
@@ -5,7 +5,6 @@ BR2_aarch64=y
 BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
 
 # System
-BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
 BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
 
 ## Required tools to create bootable media
@@ -23,13 +22,13 @@ BR2_TARGET_ROOTFS_EXT2_SIZE="200M"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/aarch64-efi/post-image.sh support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/aarch64-efi/genimage-efi.cfg"
 
-# Linux headers same as kernel, a 5.9 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_9=y
+# Linux headers same as kernel, a 5.11 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_11=y
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.9.11"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.11.16"
 BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
 BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y