On Fri, Jul 1, 2016 at 6:19 PM, Hongbo Zhang <macro.wav...@gmail.com> wrote: > On Sun, Jun 19, 2016 at 12:38 PM, Chen-Yu Tsai <w...@csie.org> wrote: >> Now that we have a data section, add helper functions to save and fetch >> per-CPU target PC. >> >> Signed-off-by: Chen-Yu Tsai <w...@csie.org> >> --- >> arch/arm/cpu/armv7/Makefile | 1 + >> arch/arm/cpu/armv7/psci-common.c | 39 >> +++++++++++++++++++++++++++++++++++++++ >> arch/arm/include/asm/psci.h | 4 ++++ >> 3 files changed, 44 insertions(+) >> create mode 100644 arch/arm/cpu/armv7/psci-common.c >> >> diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile >> index 328c4b10e976..730b59986a01 100644 >> --- a/arch/arm/cpu/armv7/Makefile >> +++ b/arch/arm/cpu/armv7/Makefile >> @@ -26,6 +26,7 @@ endif >> >> ifneq ($(CONFIG_ARMV7_PSCI),) >> obj-y += psci.o >> +obj-y += psci-common.o > > The Makefile was updated, this patch doen't apply today, but only a > minor change is needed.
I'm aware of the change. I might post a new version after 2016.07 is released. Thanks ChenYu >> endif >> >> obj-$(CONFIG_IPROC) += iproc-common/ >> diff --git a/arch/arm/cpu/armv7/psci-common.c >> b/arch/arm/cpu/armv7/psci-common.c >> new file mode 100644 >> index 000000000000..d14b6937473f >> --- /dev/null >> +++ b/arch/arm/cpu/armv7/psci-common.c >> @@ -0,0 +1,39 @@ >> +/* >> + * Common PSCI functions >> + * >> + * Copyright (C) 2016 Chen-Yu Tsai >> + * Author: Chen-Yu Tsai <w...@csie.org> >> + * >> + * This program is free software; you can redistribute it and/or modify >> + * it under the terms of the GNU General Public License version 2 as >> + * published by the Free Software Foundation. >> + * >> + * This program is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License for more details. >> + * >> + * You should have received a copy of the GNU General Public License >> + * along with this program. If not, see <http://www.gnu.org/licenses/>. >> + */ >> + >> +#include <config.h> >> +#include <asm/armv7.h> >> +#include <asm/macro.h> >> +#include <asm/psci.h> >> +#include <asm/secure.h> >> +#include <linux/linkage.h> >> + >> +static u32 psci_target_pc[CONFIG_ARMV7_PSCI_NR_CPUS] __secure_data = { 0 }; >> + >> +void __secure psci_save_target_pc(int cpu, u32 pc) >> +{ >> + psci_target_pc[cpu] = pc; >> + DSB; >> +} >> + >> +u32 __secure psci_get_target_pc(int cpu) >> +{ >> + return psci_target_pc[cpu]; >> +} >> + >> diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h >> index dab576997654..a0da02300700 100644 >> --- a/arch/arm/include/asm/psci.h >> +++ b/arch/arm/include/asm/psci.h >> @@ -54,6 +54,10 @@ >> #ifndef __ASSEMBLY__ >> #include <asm/types.h> >> >> +/* These 2 helper functions assume cpu < CONFIG_ARMV7_PSCI_NR_CPUS */ >> +u32 psci_get_target_pc(int cpu); >> +void psci_save_target_pc(int cpu, u32 pc); >> + >> void psci_cpu_entry(void); >> u32 psci_get_cpu_id(void); >> u32 psci_get_cpu_stack_top(int cpu); >> -- >> 2.8.1 >> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
