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authorMichal Simek <michal.simek@xilinx.com>2016-10-25 11:43:02 +0200
committerMichal Simek <michal.simek@xilinx.com>2016-11-15 15:28:05 +0100
commit47359a0394b28802c60c9381ac7bab31cb065146 (patch)
treedaa71cebae149079356986f87f194c1f91d6047a /arch
parente1992276c30f18207de6df3bf058449806b6cc5e (diff)
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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 <michal.simek@xilinx.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv8/zynqmp/spl.c6
1 files changed, 4 insertions, 2 deletions
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) {