From: Alexandre Marquet Date: Tue, 27 Jan 2026 20:40:58 +0000 (+0100) Subject: ARM: samsung: exynos5250: Allow CPU1 to boot X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=32d4b991f25eeffac7568ef51367f924394fbdc5;p=thirdparty%2Fkernel%2Flinux.git ARM: samsung: exynos5250: Allow CPU1 to boot The firmware trustzone needs a special call to bring up the secondary cpu core on the Manta board. This seems to be not needed on other exynos5 boards and comes down to the available firmware on a particular board. Signed-off-by: Alexandre Marquet Signed-off-by: Lukas Timmermann Reviewed-by: Henrik Grimler Link: https://patch.msgid.link/20260127-lat3st-staging-v4-3-797469aaaf9d@timmermann.space Signed-off-by: Krzysztof Kozlowski --- diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index a5e22678e27be..e9b0ed07bb90f 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -61,10 +61,10 @@ static int exynos_cpu_boot(int cpu) * Exynos3250 doesn't need to send smc command for secondary CPU boot * because Exynos3250 removes WFE in secure mode. * - * On Exynos5 devices the call is ignored by trustzone firmware. + * On most Exynos5 devices the call is ignored by trustzone firmware. */ if (!soc_is_exynos4210() && !soc_is_exynos4212() && - !soc_is_exynos4412()) + !soc_is_exynos4412() && !of_machine_is_compatible("google,manta")) return 0; /*