From: Vasyl Vavrychuk <vvavrychuk@gmail.com>
Date: Tue, 10 Apr 2018 09:36:36 +0000 (+0300)
Subject: vxworks: fixed cpu enable using PSCI on armv8
X-Git-Tag: v2018.05-rc2~14
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3194daa10ba642269a0948282423c48fd02fadce;p=platform%2Fkernel%2Fu-boot.git

vxworks: fixed cpu enable using PSCI on armv8

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 similar to what is done in boot_jump_linux
in arch/arm/lib/bootm.c file.

Tested on VxWorks 7 release SR0520 2017-12-08 Intel Stratix 10 SX SoC
Development Kit board.

Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@globallogic.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index cfc236f..91a64be 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 0387964..19479bb 100644
--- a/cmd/elf.c
+++ b/cmd/elf.c
@@ -369,6 +369,11 @@ 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);