From: Shannon Zhao <shannon.zhao@xxxxxxxxxx> When running on Xen hypervisor, runtime services are supported through hypercall. Add a Xen specific function to initialize runtime services. Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx> Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> --- arch/arm/include/asm/xen/xen-ops.h | 6 ++++++ arch/arm/xen/Makefile | 1 + arch/arm/xen/efi.c | 40 ++++++++++++++++++++++++++++++++++++ arch/arm64/include/asm/xen/xen-ops.h | 6 ++++++ arch/arm64/xen/Makefile | 1 + drivers/xen/Kconfig | 2 +- 6 files changed, 55 insertions(+), 1 deletion(-) create mode 100644 arch/arm/include/asm/xen/xen-ops.h create mode 100644 arch/arm/xen/efi.c create mode 100644 arch/arm64/include/asm/xen/xen-ops.h diff --git a/arch/arm/include/asm/xen/xen-ops.h b/arch/arm/include/asm/xen/xen-ops.h new file mode 100644 index 0000000..ec154e7 --- /dev/null +++ b/arch/arm/include/asm/xen/xen-ops.h @@ -0,0 +1,6 @@ +#ifndef _ASM_XEN_OPS_H +#define _ASM_XEN_OPS_H + +void xen_efi_runtime_setup(void); + +#endif /* _ASM_XEN_OPS_H */ diff --git a/arch/arm/xen/Makefile b/arch/arm/xen/Makefile index 1296952..2279521 100644 --- a/arch/arm/xen/Makefile +++ b/arch/arm/xen/Makefile @@ -1 +1,2 @@ obj-y := enlighten.o hypercall.o grant-table.o p2m.o mm.o +obj-$(CONFIG_XEN_EFI) += efi.o diff --git a/arch/arm/xen/efi.c b/arch/arm/xen/efi.c new file mode 100644 index 0000000..16db419 --- /dev/null +++ b/arch/arm/xen/efi.c @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2015, Linaro Limited, Shannon Zhao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 <linux/efi.h> +#include <xen/xen-ops.h> +#include <asm/xen/xen-ops.h> + +/* Set XEN EFI runtime services function pointers. Other fields of struct efi, + * e.g. efi.systab, will be set like normal EFI. + */ +void __init xen_efi_runtime_setup(void) +{ + efi.get_time = xen_efi_get_time; + efi.set_time = xen_efi_set_time; + efi.get_wakeup_time = xen_efi_get_wakeup_time; + efi.set_wakeup_time = xen_efi_set_wakeup_time; + efi.get_variable = xen_efi_get_variable; + efi.get_next_variable = xen_efi_get_next_variable; + efi.set_variable = xen_efi_set_variable; + efi.query_variable_info = xen_efi_query_variable_info; + efi.update_capsule = xen_efi_update_capsule; + efi.query_capsule_caps = xen_efi_query_capsule_caps; + efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count; + efi.reset_system = NULL; /* Functionality provided by Xen. */ +} +EXPORT_SYMBOL_GPL(xen_efi_runtime_setup); diff --git a/arch/arm64/include/asm/xen/xen-ops.h b/arch/arm64/include/asm/xen/xen-ops.h new file mode 100644 index 0000000..ec154e7 --- /dev/null +++ b/arch/arm64/include/asm/xen/xen-ops.h @@ -0,0 +1,6 @@ +#ifndef _ASM_XEN_OPS_H +#define _ASM_XEN_OPS_H + +void xen_efi_runtime_setup(void); + +#endif /* _ASM_XEN_OPS_H */ diff --git a/arch/arm64/xen/Makefile b/arch/arm64/xen/Makefile index 74a8d87..8ff8aa9 100644 --- a/arch/arm64/xen/Makefile +++ b/arch/arm64/xen/Makefile @@ -1,2 +1,3 @@ xen-arm-y += $(addprefix ../../arm/xen/, enlighten.o grant-table.o p2m.o mm.o) obj-y := xen-arm.o hypercall.o +obj-$(CONFIG_XEN_EFI) += $(addprefix ../../arm/xen/, efi.o) diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 979a831..f15bb3b 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -275,7 +275,7 @@ config XEN_HAVE_PVMMU config XEN_EFI def_bool y - depends on X86_64 && EFI + depends on (ARM || ARM64 || X86_64) && EFI config XEN_AUTO_XLATE def_bool y -- 2.0.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
