diff options
| -rw-r--r-- | hw/arm/boot.c | 34 | ||||
| -rw-r--r-- | include/hw/arm/linux-boot-if.h | 43 |
2 files changed, 77 insertions, 0 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 5b969cda1c..bef451b3b2 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -10,6 +10,7 @@ #include "config.h" #include "hw/hw.h" #include "hw/arm/arm.h" +#include "hw/arm/linux-boot-if.h" #include "sysemu/sysemu.h" #include "hw/boards.h" #include "hw/loader.h" @@ -555,6 +556,20 @@ static void load_image_to_fw_cfg(FWCfgState *fw_cfg, uint16_t size_key, fw_cfg_add_bytes(fw_cfg, data_key, data, size); } +static int do_arm_linux_init(Object *obj, void *opaque) +{ + if (object_dynamic_cast(obj, TYPE_ARM_LINUX_BOOT_IF)) { + ARMLinuxBootIf *albif = ARM_LINUX_BOOT_IF(obj); + ARMLinuxBootIfClass *albifc = ARM_LINUX_BOOT_IF_GET_CLASS(obj); + struct arm_boot_info *info = opaque; + + if (albifc->arm_linux_init) { + albifc->arm_linux_init(albif, info->secure_boot); + } + } + return 0; +} + static void arm_load_kernel_notify(Notifier *notifier, void *data) { CPUState *cs; @@ -778,6 +793,12 @@ static void arm_load_kernel_notify(Notifier *notifier, void *data) if (info->nb_cpus > 1) { info->write_secondary_boot(cpu, info); } + + /* Notify devices which need to fake up firmware initialization + * that we're doing a direct kernel boot. + */ + object_child_foreach_recursive(object_get_root(), + do_arm_linux_init, info); } info->is_linux = is_linux; @@ -803,3 +824,16 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) qemu_register_reset(do_cpu_reset, ARM_CPU(cs)); } } + +static const TypeInfo arm_linux_boot_if_info = { + .name = TYPE_ARM_LINUX_BOOT_IF, + .parent = TYPE_INTERFACE, + .class_size = sizeof(ARMLinuxBootIfClass), +}; + +static void arm_linux_boot_register_types(void) +{ + type_register_static(&arm_linux_boot_if_info); +} + +type_init(arm_linux_boot_register_types) diff --git a/include/hw/arm/linux-boot-if.h b/include/hw/arm/linux-boot-if.h new file mode 100644 index 0000000000..aba4479a14 --- /dev/null +++ b/include/hw/arm/linux-boot-if.h @@ -0,0 +1,43 @@ +/* + * hw/arm/linux-boot-if.h : interface for devices which need to behave + * specially for direct boot of an ARM Linux kernel + */ + +#ifndef HW_ARM_LINUX_BOOT_IF_H +#define HW_ARM_LINUX_BOOT_IF_H + +#include "qom/object.h" + +#define TYPE_ARM_LINUX_BOOT_IF "arm-linux-boot-if" +#define ARM_LINUX_BOOT_IF_CLASS(klass) \ + OBJECT_CLASS_CHECK(ARMLinuxBootIfClass, (klass), TYPE_ARM_LINUX_BOOT_IF) +#define ARM_LINUX_BOOT_IF_GET_CLASS(obj) \ + OBJECT_GET_CLASS(ARMLinuxBootIfClass, (obj), TYPE_ARM_LINUX_BOOT_IF) +#define ARM_LINUX_BOOT_IF(obj) \ + INTERFACE_CHECK(ARMLinuxBootIf, (obj), TYPE_ARM_LINUX_BOOT_IF) + +typedef struct ARMLinuxBootIf { + /*< private >*/ + Object parent_obj; +} ARMLinuxBootIf; + +typedef struct ARMLinuxBootIfClass { + /*< private >*/ + InterfaceClass parent_class; + + /*< public >*/ + /** arm_linux_init: configure the device for a direct boot + * of an ARM Linux kernel (so that device reset puts it into + * the state the kernel expects after firmware initialization, + * rather than the true hardware reset state). This callback is + * called once after machine construction is complete (before the + * first system reset). + * + * @obj: the object implementing this interface + * @secure_boot: true if we are booting Secure, false for NonSecure + * (or for a CPU which doesn't support TrustZone) + */ + void (*arm_linux_init)(ARMLinuxBootIf *obj, bool secure_boot); +} ARMLinuxBootIfClass; + +#endif |