From 47359a0394b28802c60c9381ac7bab31cb065146 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 25 Oct 2016 11:43:02 +0200 Subject: ARM64: zynqmp: Fix secondary bootmode enabling Do not setup use_alt bit which copy alternative boot mode to boot mode. The reason is that this bit is cleared after POR but not after any software reset which will cause that after SW reset bootrom will look for different boot image. This patch setups alternative boot mode selection (purely SW handling) and extends code to read this alternative boot mode first and use it if it is setup. Signed-off-by: Michal Simek --- arch/arm/cpu/armv8/zynqmp/spl.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/cpu/armv8/zynqmp/spl.c b/arch/arm/cpu/armv8/zynqmp/spl.c index 04e1905..bdbd613 100644 --- a/arch/arm/cpu/armv8/zynqmp/spl.c +++ b/arch/arm/cpu/armv8/zynqmp/spl.c @@ -69,12 +69,14 @@ u32 spl_boot_device(void) #if defined(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE_ENABLED) /* Change default boot mode at run-time */ - writel(BOOT_MODE_USE_ALT | - CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT, + writel(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT, &crlapb_base->boot_mode); #endif reg = readl(&crlapb_base->boot_mode); + if (reg >> BOOT_MODE_ALT_SHIFT) + reg >>= BOOT_MODE_ALT_SHIFT; + bootmode = reg & BOOT_MODES_MASK; switch (bootmode) { -- cgit v1.1