diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig index 7b5b0c0c05..57dc995712 100644 --- a/xen/arch/arm/Kconfig +++ b/xen/arch/arm/Kconfig @@ -80,6 +80,14 @@ config ARM_EFI UEFI firmware. A UEFI stub is provided to allow Xen to be booted as an EFI application. +config GICV2 + bool "GICv2 driver" + default y + select VGICV2 + help + Driver for the ARM Generic Interrupt Controller v2. + If unsure, say Y + config GICV3 bool "GICv3 driver" depends on !NEW_VGIC @@ -99,11 +107,22 @@ config OVERLAY_DTB help Dynamic addition/removal of Xen device tree nodes using a dtbo. +config VGICV2 + bool "vGICv2 interface for domains" + default y + help + Allow Xen to expose a Generic Interrupt Controller version 2 like to Xen + domains. This can be configured at the domain creation. + This option is mandatory when using GICv2. + For GICv3, this allows domain to use GICv2 when the hardware supports it. + If unsure say Y. + config HVM def_bool y config NEW_VGIC bool "Use new VGIC implementation" + select GICV2 ---help--- This is an alternative implementation of the ARM GIC interrupt diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile index c45b08b31e..d83dc25c0d 100644 --- a/xen/arch/arm/Makefile +++ b/xen/arch/arm/Makefile @@ -23,7 +23,7 @@ obj-y += domctl.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-y += efi/ obj-y += gic.o -obj-y += gic-v2.o +obj-$(CONFIG_GICV2) += gic-v2.o obj-$(CONFIG_GICV3) += gic-v3.o obj-$(CONFIG_HAS_ITS) += gic-v3-its.o obj-$(CONFIG_HAS_ITS) += gic-v3-lpi.o @@ -58,7 +58,7 @@ obj-$(CONFIG_NEW_VGIC) += vgic/ ifneq ($(CONFIG_NEW_VGIC),y) obj-y += gic-vgic.o obj-y += vgic.o -obj-y += vgic-v2.o +obj-$(CONFIG_VGICV2) += vgic-v2.o obj-$(CONFIG_GICV3) += vgic-v3.o obj-$(CONFIG_HAS_ITS) += vgic-v3-its.o endif diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 2dd2926b41..814a41bcc5 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2491,6 +2491,7 @@ static int __init handle_node(struct domain *d, struct kernel_info *kinfo, return res; } +#ifdef CONFIG_VGICV2 static int __init make_gicv2_domU_node(struct kernel_info *kinfo) { void *fdt = kinfo->fdt; @@ -2542,6 +2543,7 @@ static int __init make_gicv2_domU_node(struct kernel_info *kinfo) return res; } +#endif #ifdef CONFIG_GICV3 static int __init make_gicv3_domU_node(struct kernel_info *kinfo) @@ -2617,8 +2619,10 @@ static int __init make_gic_domU_node(struct kernel_info *kinfo) case GIC_V3: return make_gicv3_domU_node(kinfo); #endif +#ifdef CONFIG_VGICV2 case GIC_V2: return make_gicv2_domU_node(kinfo); +#endif default: panic("Unsupported GIC version\n"); } diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c index 9b35a8c8a7..18289cd645 100644 --- a/xen/arch/arm/gic-v3.c +++ b/xen/arch/arm/gic-v3.c @@ -1334,6 +1334,7 @@ static paddr_t __initdata dbase = INVALID_PADDR; static paddr_t __initdata vbase = INVALID_PADDR, vsize = 0; static paddr_t __initdata cbase = INVALID_PADDR, csize = 0; +#ifdef CONFIG_VGICV2 /* If the GICv3 supports GICv2, initialize it */ static void __init gicv3_init_v2(void) { @@ -1359,6 +1360,9 @@ static void __init gicv3_init_v2(void) vgic_v2_setup_hw(dbase, cbase, csize, vbase, 0); } +#else +static inline void gicv3_init_v2(void) { } +#endif static void __init gicv3_ioremap_distributor(paddr_t dist_paddr) { diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c index f6b49766f9..c04fc4f83f 100644 --- a/xen/arch/arm/vgic.c +++ b/xen/arch/arm/vgic.c @@ -96,10 +96,12 @@ int domain_vgic_register(struct domain *d, unsigned int *mmio_count) return -ENODEV; break; #endif +#ifdef CONFIG_VGICV2 case GIC_V2: if ( vgic_v2_init(d, mmio_count) ) return -ENODEV; break; +#endif default: printk(XENLOG_G_ERR "d%d: Unknown vGIC version %u\n", d->domain_id, d->arch.vgic.version); diff --git a/xen/arch/arm/vgic/Makefile b/xen/arch/arm/vgic/Makefile index 806826948e..60cbf7f2f9 100644 --- a/xen/arch/arm/vgic/Makefile +++ b/xen/arch/arm/vgic/Makefile @@ -1,5 +1,5 @@ obj-y += vgic.o -obj-y += vgic-v2.o +obj-$(CONFIG_VGICV2) += vgic-v2.o obj-y += vgic-mmio.o -obj-y += vgic-mmio-v2.o +obj-$(CONFIG_VGICV2) += vgic-mmio-v2.o obj-y += vgic-init.o