arch/arm/configs/imx_v4_v5_defconfig | 1 + arch/arm/configs/imx_v6_v7_defconfig | 1 + arch/arm/configs/imxrt_defconfig | 1 + 3 files changed, 3 insertions(+)
Compiling the kernel using affected imx defconfigs lead to a hard CPU crash that reaches a state where each register, including PC ends up in 0xDEADBEEF. That is because the SoC support depending on CONFIG_ARCH_MXC gets disabled since CONFIG_ARCH_NXP is not defined while said feature depends on it. The default arm defconfig is unaffected as it defines CONFIG_ARCH_NXP=y correctly as excepted. These patches solve the crash causing my confusion: https://lore.kernel.org/all/c84e8246-8104-4409-8d95-389d61bc07af@gmail.com Denis Benato (3): ARM: imx_v4_v5_defconfig: define CONFIG_ARCH_NXP ARM: imx_v6_v7_defconfig: define CONFIG_ARCH_NXP ARM: imxrt_defconfig: define CONFIG_ARCH_NXP arch/arm/configs/imx_v4_v5_defconfig | 1 + arch/arm/configs/imx_v6_v7_defconfig | 1 + arch/arm/configs/imxrt_defconfig | 1 + 3 files changed, 3 insertions(+) -- 2.49.0
Hi Denis, On Sat, May 10, 2025 at 03:18:03AM +0200, Denis Benato wrote: > Compiling the kernel using affected imx defconfigs lead > to a hard CPU crash that reaches a state where each register, > including PC ends up in 0xDEADBEEF. > > That is because the SoC support depending on CONFIG_ARCH_MXC > gets disabled since CONFIG_ARCH_NXP is not defined while > said feature depends on it. > > The default arm defconfig is unaffected as it defines > CONFIG_ARCH_NXP=y correctly as excepted. > > These patches solve the crash causing my confusion: > https://lore.kernel.org/all/c84e8246-8104-4409-8d95-389d61bc07af@gmail.com In this mail you say you want to start a ARMv8 i.MX8MM board. The configs you are changing are for old 32bit ARMv4-7 SoCs. arch/arm64/configs/defconfig is for you. Sascha > > Denis Benato (3): > ARM: imx_v4_v5_defconfig: define CONFIG_ARCH_NXP > ARM: imx_v6_v7_defconfig: define CONFIG_ARCH_NXP > ARM: imxrt_defconfig: define CONFIG_ARCH_NXP > > arch/arm/configs/imx_v4_v5_defconfig | 1 + > arch/arm/configs/imx_v6_v7_defconfig | 1 + > arch/arm/configs/imxrt_defconfig | 1 + > 3 files changed, 3 insertions(+) > > -- > 2.49.0 > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
On 5/12/25 08:03, Sascha Hauer wrote: > Hi Denis, > > On Sat, May 10, 2025 at 03:18:03AM +0200, Denis Benato wrote: >> Compiling the kernel using affected imx defconfigs lead >> to a hard CPU crash that reaches a state where each register, >> including PC ends up in 0xDEADBEEF. >> >> That is because the SoC support depending on CONFIG_ARCH_MXC >> gets disabled since CONFIG_ARCH_NXP is not defined while >> said feature depends on it. >> >> The default arm defconfig is unaffected as it defines >> CONFIG_ARCH_NXP=y correctly as excepted. >> >> These patches solve the crash causing my confusion: >> https://lore.kernel.org/all/c84e8246-8104-4409-8d95-389d61bc07af@gmail.com > In this mail you say you want to start a ARMv8 i.MX8MM board. The > configs you are changing are for old 32bit ARMv4-7 SoCs. > arch/arm64/configs/defconfig is for you. Hello and thanks for both of your answers. Yes, I have made the mistake of using that defconfig for arm while building an arm64 kernel. I am sorry and thank you both for correcting me. Please, ignore these patches. Denis B. > Sascha > >> Denis Benato (3): >> ARM: imx_v4_v5_defconfig: define CONFIG_ARCH_NXP >> ARM: imx_v6_v7_defconfig: define CONFIG_ARCH_NXP >> ARM: imxrt_defconfig: define CONFIG_ARCH_NXP >> >> arch/arm/configs/imx_v4_v5_defconfig | 1 + >> arch/arm/configs/imx_v6_v7_defconfig | 1 + >> arch/arm/configs/imxrt_defconfig | 1 + >> 3 files changed, 3 insertions(+) >> >> -- >> 2.49.0 >> >>
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