[U-Boot] [PATCH] vxworks: fixed cpu enable using PSCI on armv8
Without armv8_setup_psci register VBAR_EL3 is not set up properly 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.
This implementation is very similiar to what is done in boot_jump_linux in arch/arm/lib/bootm.c file.
Signed-off-by: Vasyl Vavrychuk vasyl.vavrychuk@globallogic.com --- cmd/elf.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/cmd/elf.c b/cmd/elf.c index 5745a389da..db690fc619 100644 --- a/cmd/elf.c +++ b/cmd/elf.c @@ -372,6 +372,11 @@ 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);
Hi Vasyl,
On Mon, Mar 26, 2018 at 3:58 PM, Vasyl Vavrychuk vvavrychuk@gmail.com wrote:
Without armv8_setup_psci register VBAR_EL3 is not set up properly 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.
This implementation is very similiar to what is done in boot_jump_linux in arch/arm/lib/bootm.c file.
Could you please include what VxWorks version was tested on what board?
Signed-off-by: Vasyl Vavrychuk vasyl.vavrychuk@globallogic.com
cmd/elf.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/cmd/elf.c b/cmd/elf.c index 5745a389da..db690fc619 100644 --- a/cmd/elf.c +++ b/cmd/elf.c @@ -372,6 +372,11 @@ 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
AFAIK, the ARMv8 is only supported in VxWorks 7, but per README.vxworks, VxWorks 7 uses 'bootm' for ARM/PPC to load its image, then why do you want to use 'bootvx' command?
#ifdef CONFIG_X86 /* VxWorks on x86 uses stack to pass parameters */ ((asmlinkage void (*)(int))addr)(0); --
Regards, Bin
participants (2)
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Bin Meng -
Vasyl Vavrychuk