[U-Boot] [PATCH] vxworks: fixed cpu enable using PSCI on armv8

[Vasyl Vavrychuk]

Without armv8_setup_psci register VBAR_EL3 is not set up property which
makes SMC calls jump to invalid location.

smp_kick_all_cpus is required to make slave cpus leave gic_wait_for_interrupt.
Without this they will never pursue booting process.

Fix was applied to the two ways of booting VxWorks: bootvx and bootm commands.

This implementation is very similiar to what is done in boot_jump_linux
in arch/arm/lib/bootm.c file.

Tested on VxWorks 7 release SR0520 2017-12-08.

Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk at globallogic.com>
---
 arch/arm/lib/bootm.c | 5 +++++
 cmd/elf.c            | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index cfc236f964..91a64bec34 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -448,6 +448,11 @@ void boot_prep_vxworks(bootm_headers_t *images)
 }
 void boot_jump_vxworks(bootm_headers_t *images)
 {
+#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
+	armv8_setup_psci();
+	smp_kick_all_cpus();
+#endif
+
 	/* ARM VxWorks requires device tree physical address to be passed */
 	((void (*)(void *))images->ep)(images->ft_addr);
 }
diff --git a/cmd/elf.c b/cmd/elf.c
index 5b59fc6329..b476202908 100644
--- a/cmd/elf.c
+++ b/cmd/elf.c
@@ -368,6 +368,11 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	printf("## Starting vxWorks at 0x%08lx ...\n", addr);
 
 	dcache_disable();
+#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
+	armv8_setup_psci();
+	smp_kick_all_cpus();
+#endif
+
 #ifdef CONFIG_X86
 	/* VxWorks on x86 uses stack to pass parameters */
 	((asmlinkage void (*)(int))addr)(0);
-- 
2.11.0