Re: [Buildroot] [PATCH 1/1] configs/freescale_imx93frdm: bump U-Boot, TF-A and Linux

On Sun, 26 Jul 2026, Julien Olivain wrote:

> Since Buildroot commit [1] "package/gcc: switch to GCC 15.x as the
> default", compiling freescale_imx93frdm_defconfig fails in TF-A with
> error:
>
>     include/drivers/nxp/trdc/imx_trdc.h:7: error: header guard 'IMX_TRDC_H' followed by '#define' of a different macro [-Werror=header-guard]
>         7 | #ifndef IMX_TRDC_H
>     include/drivers/nxp/trdc/imx_trdc.h:8: note: 'IMX_XRDC_H' is defined here; did you mean 'IMX_TRDC_H'?
>         8 | #define IMX_XRDC_H
>
> The issue happen because this defconfig is using a Buildroot
> (internal) toolchain which uses gcc version 15 by default.
>
> This issue was fixed upstream in [2], first included in TF-A v2.13.
>
> This commit updates U-Boot, TF-A and Linux to use the NXP
> tag lf-6.18.20-2.0.0, which include this fixes.
>
> Note that, as described in the commit log of [3] which introduced
> this defconfig, U-Boot and Linux were forks. Now the necessary
> patches are included in the vendor BSP, this commit switches those
> repos to use the vendor ones.
>
> While at it, this commit also switches the defconfig to use an
> external glibc stable Bootlin toolchain, to follow recommendations
> from [4]. Since an external toolchain is used, the linux-headers.hash
> custom hash file is no longer needed and is also removed. At the
> time of this commit, the Bootlin stable toolchain is a gcc 14.
>
> Also, due to the upstream uboot commit [5], this commit adds a uboot
> config fragment to disable CONFIG_EFI_CAPSULE_AUTHENTICATE, to
> remove the dependency on the command "cert-to-efi-sig-list", provided
> the host efitools package, which is not yet in Buildroot.
>
> This commit was run tested on board 700-94611 Rev B1.
>
> [1] https://gitlab.com/buildroot.org/buildroot/-/commit/a75b8623f5515d99bec48f96586115953150558e
> [2] https://git.trustedfirmware.org/plugins/gitiles/TF-A/trusted-firmware-a.git/+/2e9198d0e0cbe9546348dd0a71ff6c3d2061d4eb%5E%21/
> [3] https://gitlab.com/buildroot.org/buildroot/-/commit/2e05f22ff862192a7e512d0db0486351bba94ae8
> [4] https://elinux.org/Buildroot:DeveloperDaysELCE2024#Rules_for_defconfigs
> [5] https://git.u-boot-project.org/u-boot/u-boot/-/commit/fd58c275f6ba524101ba0990e53f5a11ac390bd0
>
> Reported-by: Robert P. J. Day <[email protected]>
> Signed-off-by: Julien Olivain <[email protected]>
> ---
>  .../arm-trusted-firmware/arm-trusted-firmware.hash    |  2 +-
>  .../patches/linux-headers/linux-headers.hash          |  1 -
>  board/freescale/imx93frdm/patches/linux/linux.hash    |  2 +-
>  board/freescale/imx93frdm/patches/uboot/uboot.hash    |  2 +-
>  board/freescale/imx93frdm/uboot.fragment              |  1 +
>  configs/freescale_imx93frdm_defconfig                 | 11 +++++++----
>  6 files changed, 11 insertions(+), 8 deletions(-)
>  delete mode 120000 board/freescale/imx93frdm/patches/linux-headers/linux-headers.hash
>  create mode 100644 board/freescale/imx93frdm/uboot.fragment
>
> diff --git a/board/freescale/imx93frdm/patches/arm-trusted-firmware/arm-trusted-firmware.hash b/board/freescale/imx93frdm/patches/arm-trusted-firmware/arm-trusted-firmware.hash
> index 7561385cb8..bf39f1e9c7 100644
> --- a/board/freescale/imx93frdm/patches/arm-trusted-firmware/arm-trusted-firmware.hash
> +++ b/board/freescale/imx93frdm/patches/arm-trusted-firmware/arm-trusted-firmware.hash
> @@ -1,2 +1,2 @@
>  # Locally calculated
> -sha256  8cfe0afc903ebbc03f27e4874aa9ce82be78843a8b42ed4c906871e7f311b510  imx-atf-lf-6.6.36-2.1.0.tar.gz
> +sha256  d7813f4ad5431edb162d6be2775bc021f9007b9c6934e977330291168523a507  imx-atf-lf-6.18.20-2.0.0.tar.gz
> diff --git a/board/freescale/imx93frdm/patches/linux-headers/linux-headers.hash b/board/freescale/imx93frdm/patches/linux-headers/linux-headers.hash
> deleted file mode 120000
> index 5808d92afe..0000000000
> --- a/board/freescale/imx93frdm/patches/linux-headers/linux-headers.hash
> +++ /dev/null
> @@ -1 +0,0 @@
> -../linux/linux.hash
> \ No newline at end of file
> diff --git a/board/freescale/imx93frdm/patches/linux/linux.hash b/board/freescale/imx93frdm/patches/linux/linux.hash
> index 0da8c03384..222ec55328 100644
> --- a/board/freescale/imx93frdm/patches/linux/linux.hash
> +++ b/board/freescale/imx93frdm/patches/linux/linux.hash
> @@ -1,2 +1,2 @@
>  # Locally calculated
> -sha256  3244dc3c62c990d9de90e1c7193aa3099e0e74e720de5c9c13edfbfdd802f596  linux-imx-lf-6.6.36-2.1.0-imx93frdm.tar.gz
> +sha256  a8f55764fd1418db8adfd2711c0abb7d5464a8ee1cbfd0f6878f1059ecfa1316  linux-imx-lf-6.18.20-2.0.0.tar.gz
> diff --git a/board/freescale/imx93frdm/patches/uboot/uboot.hash b/board/freescale/imx93frdm/patches/uboot/uboot.hash
> index e512c27f7d..01e860b59e 100644
> --- a/board/freescale/imx93frdm/patches/uboot/uboot.hash
> +++ b/board/freescale/imx93frdm/patches/uboot/uboot.hash
> @@ -1,2 +1,2 @@
>  # Locally calculated
> -sha256  bced4334363199d5465532d221d06dc3a5b49271067d74408019c825ed2ca715  uboot-imx-lf-6.6.36-2.1.0-imx93frdm.tar.gz
> +sha256  96942f8c49736b7d40277891bf0a34cfdd0afb59390f79b65b2b33b3bbd19f61  uboot-imx-lf-6.18.20-2.0.0.tar.gz
> diff --git a/board/freescale/imx93frdm/uboot.fragment b/board/freescale/imx93frdm/uboot.fragment
> new file mode 100644
> index 0000000000..201ab28290
> --- /dev/null
> +++ b/board/freescale/imx93frdm/uboot.fragment
> @@ -0,0 +1 @@
> +# CONFIG_EFI_CAPSULE_AUTHENTICATE is not set
> diff --git a/configs/freescale_imx93frdm_defconfig b/configs/freescale_imx93frdm_defconfig
> index 8e16762d8f..53875cc020 100644
> --- a/configs/freescale_imx93frdm_defconfig
> +++ b/configs/freescale_imx93frdm_defconfig
> @@ -1,14 +1,16 @@
>  BR2_aarch64=y
>  BR2_cortex_a55=y
>  BR2_ARM_FPU_VFPV4D16=y
> -BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_6=y
> +BR2_TOOLCHAIN_EXTERNAL=y
> +BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
> +BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_GLIBC_STABLE=y
>  BR2_GLOBAL_PATCH_DIR="board/freescale/imx93frdm/patches"
>  BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
>  BR2_TARGET_GENERIC_GETTY_PORT="ttyLP0"
>  BR2_ROOTFS_POST_IMAGE_SCRIPT="board/freescale/common/imx/imx9-bootloader-prepare.sh board/freescale/common/imx/post-image.sh"
>  BR2_LINUX_KERNEL=y
>  BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
> -BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,jolivain,linux-imx,lf-6.6.36-2.1.0-imx93frdm)/linux-imx-lf-6.6.36-2.1.0-imx93frdm.tar.gz"
> +BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,linux-imx,lf-6.18.20-2.0.0)/linux-imx-lf-6.18.20-2.0.0.tar.gz"
>  BR2_LINUX_KERNEL_DEFCONFIG="imx_v8"
>  BR2_LINUX_KERNEL_DTS_SUPPORT=y
>  BR2_LINUX_KERNEL_INTREE_DTS_NAME="freescale/imx93-11x11-frdm"
> @@ -22,14 +24,15 @@ BR2_TARGET_ROOTFS_EXT2_4=y
>  BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
>  BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
>  BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_TARBALL=y
> -BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,imx-atf,lf-6.6.36-2.1.0)/imx-atf-lf-6.6.36-2.1.0.tar.gz"
> +BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,imx-atf,lf-6.18.20-2.0.0)/imx-atf-lf-6.18.20-2.0.0.tar.gz"
>  BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="imx93"
>  BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31=y
>  BR2_TARGET_UBOOT=y
>  BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
>  BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
> -BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="$(call github,jolivain,uboot-imx,lf-6.6.36-2.1.0-imx93frdm)/uboot-imx-lf-6.6.36-2.1.0-imx93frdm.tar.gz"
> +BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,uboot-imx,lf-6.18.20-2.0.0)/uboot-imx-lf-6.18.20-2.0.0.tar.gz"
>  BR2_TARGET_UBOOT_BOARD_DEFCONFIG="imx93_11x11_frdm"
> +BR2_TARGET_UBOOT_CONFIG_FRAGMENT_FILES="board/freescale/imx93frdm/uboot.fragment"
>  BR2_TARGET_UBOOT_NEEDS_DTC=y
>  BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
>  BR2_TARGET_UBOOT_NEEDS_GNUTLS=y
> --
> 2.55.0
>

Looks good, here's the first part of the boot after applying the patch
and configuring with "make freescale_imx93frdm_defconfig":


U-Boot SPL 2026.04 (Jul 29 2026 - 14:16:48 -0400)
PMIC: PCA9451A
PMIC: Over Drive Voltage Mode
DDR: 3733MTS
found DRAM 2CS_2GB DRAM matched
M33 prepare ok
Normal Boot
Trying to boot from BOOTROM
Boot Stage: Primary boot
image offset 0x8000, pagesize 0x200, ivt offset 0x0
Load image from 0x5b400 by ROM_API
NOTICE:  TRDC init done
NOTICE:  BL31: v2.14.1(release):custom
NOTICE:  BL31: Built : 14:15:18, Jul 29 2026


U-Boot 2026.04 (Jul 29 2026 - 14:16:48 -0400)

Reset Status: POR

CPU:   NXP i.MX93(52) Rev1.1 A55 at 1700 MHz
CPU:   Industrial temperature grade (-40C to 105C) at 33C
Model: NXP i.MX93 11X11 FRDM board
DRAM:  2 GiB
optee optee: OP-TEE api uid mismatch
BOARD: V1.0(ADC2:686,ADC3:297)
TCPC:  Vendor ID [0x1fc9], Product ID [0x5110], Addr [I2C2 0x52]
SNK.Power3.0 on CC1

... snip until login prompt ...

Tested-by: Robert P. J. Day <[email protected]>
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