Hi Lv,
On 2014-4-28 12:54, Zheng, Lv wrote:
Hi,
From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-owner@vger.kernel.org] On Behalf Of Hanjun Guo Sent: Friday, April 25, 2014 9:20 PM
ACPI core need lots extern variables and functions which should be provided by arch dependent code to make itself compilable. so introduce arm_core.c and its related header file here.
acpi_boot_table_init() will be called in setup_arch() before paging_init(), so we should use eary_ioremap() mechanism here to get the RSDP and all the table pointers, with this patch, we can get ACPI boot-time tables from firmware on ARM64.
Signed-off-by: Al Stone al.stone@linaro.org Signed-off-by: Graeme Gregory graeme.gregory@linaro.org Signed-off-by: Hanjun Guo hanjun.guo@linaro.org Signed-off-by: Tomasz Nowicki tomasz.nowicki@linaro.org
arch/arm64/include/asm/acpi.h | 53 +++++++++++++++++++ arch/arm64/kernel/setup.c | 4 ++ drivers/acpi/Makefile | 2 + drivers/acpi/plat/Makefile | 1 + drivers/acpi/plat/arm-core.c | 113 +++++++++++++++++++++++++++++++++++++++++ 5 files changed, 173 insertions(+) create mode 100644 drivers/acpi/plat/Makefile create mode 100644 drivers/acpi/plat/arm-core.c
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index e3e990e..3ac9dfb 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -19,6 +19,43 @@ #ifndef _ASM_ACPI_H #define _ASM_ACPI_H
+#include <asm/cacheflush.h>
+#include <linux/init.h>
+#define COMPILER_DEPENDENT_INT64 s64 +#define COMPILER_DEPENDENT_UINT64 u64
+/*
- Calling conventions:
- ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
- ACPI_EXTERNAL_XFACE - External ACPI interfaces
- ACPI_INTERNAL_XFACE - Internal ACPI interfaces
- ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
- */
+#define ACPI_SYSTEM_XFACE +#define ACPI_EXTERNAL_XFACE +#define ACPI_INTERNAL_XFACE +#define ACPI_INTERNAL_VAR_XFACE
Just a reminder. I'm going to sort such default definitions out. The story can be found here: https://lkml.org/lkml/2014/4/8/57 The patch to achieve this can be found here: https://lkml.org/lkml/2014/4/23/71
If your series is merged after the above series, you don't need the above lines.
+/* Asm macros */ +#define ACPI_FLUSH_CPU_CACHE() flush_cache_all()
Another reminder. I'm going to split this into <asm/acenv.h> in the same story. The patch to achieve this can be found here: https://lkml.org/lkml/2014/4/23/75 If your series is merged after the above series, you need to put this line into arch/arm/include/asm/acenv.h.
It is ok to me, once your patches are accepted by Rafael and merged into linux-next, I will rebase my patch set.
Thanks a lot the reminding :)
Best regards Hanjun