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 <[email protected]>
Signed-off-by: Lukas Timmermann <[email protected]>
Reviewed-by: Henrik Grimler <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Krzysztof Kozlowski <[email protected]>

Author: alexmrqt

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;
 
 	/*