Hi Lukas, On Mon, Dec 15, 2025 at 04:05:24PM +0100, Lukas Timmermann wrote: > From: Alexandre Marquet <[email protected]> > > 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 <[email protected]> > Signed-off-by: Lukas Timmermann <[email protected]>
Reviewed-by: Henrik Grimler <[email protected]> I had a look at the manta bootloader, but have not been able to pinpoint where the smc calls are handled. Nevertheless, Seems like manta might be the only Exynos 5 android device that needs CPU1BOOT. I tried to track down exynos5250-arndale's tzsw to compare with, but seems like it is no longer available anywhere unfortunately. Here's a summary of my findings from looking at sboot/the tzsw from various devices, where `CPU1BOOT SMC is handled == yes` means that the device needs the SMC call. .----------------------.--------------.--------------.--------------. | Device (exynos-) | Similar tzsw | CPU1BOOT SMC | sboot/tzsw | | | to odroidxu? | is handled? | source | .----------------------.--------------.--------------.--------------. 4212-tab3 | yes | yes | T310XXSBQB2 4412-i9300 | yes | yes | I9300XXUGPE1 4412-i9305 | yes | yes | I9305XXUFPB1 4412-odroid{x,x2,u3} | yes | yes | wiki.odroid.com/_media/en/boot.tar.gz 4412-origen | no | don't know | Linaro's origen hwpack 20130130 5260-hllte (SM-N7505)| no | don't know | N7505XXSDRI2 5410-odroidxu | yes | no | github.com/hsnaves/exynos5410-firmware 5410-ja3g | no | don't know | I9500XXUHPK1 5420-chagall-wifi | no | no | T800XXU1CRJ1 5420-arndale-octa | yes | no | Linaro's arndale-octa hwpack 20140323 5422-odroid-xu{3,4} | yes | no | Hardkernel's u-boot 2020.01 branch 5422-samsung-k3g | no | don't know | G900HXXU1CVG7 As can be seen none of the Exynos 5 devices in the list have been confirmed to need/handle CPU1BOOT. Best regards, Henrik Grimler > --- > arch/arm/mach-exynos/firmware.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c > index a5e22678e27b..e9b0ed07bb90 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; > > /* > > -- > 2.52.0 > >
