@@ -4,3 +4,6 @@ config VMAPPLE_AES
config VMAPPLE_BDIF
bool
+config VMAPPLE_CFG
+ bool
+
new file mode 100644
@@ -0,0 +1,197 @@
+/*
+ * VMApple Configuration Region
+ *
+ * Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/vmapple/vmapple.h"
+#include "hw/sysbus.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qapi/error.h"
+#include "net/net.h"
+
+OBJECT_DECLARE_SIMPLE_TYPE(VMAppleCfgState, VMAPPLE_CFG)
+
+#define VMAPPLE_CFG_SIZE 0x00010000
+
+typedef struct VMAppleCfg {
+ uint32_t version; /* 0x000 */
+ uint32_t nr_cpus; /* 0x004 */
+ uint32_t unk1; /* 0x008 */
+ uint32_t unk2; /* 0x00c */
+ uint32_t unk3; /* 0x010 */
+ uint32_t unk4; /* 0x014 */
+ uint64_t ecid; /* 0x018 */
+ uint64_t ram_size; /* 0x020 */
+ uint32_t run_installer1; /* 0x028 */
+ uint32_t unk5; /* 0x02c */
+ uint32_t unk6; /* 0x030 */
+ uint32_t run_installer2; /* 0x034 */
+ uint32_t rnd; /* 0x038 */
+ uint32_t unk7; /* 0x03c */
+ MACAddr mac_en0; /* 0x040 */
+ uint8_t pad1[2];
+ MACAddr mac_en1; /* 0x048 */
+ uint8_t pad2[2];
+ MACAddr mac_wifi0; /* 0x050 */
+ uint8_t pad3[2];
+ MACAddr mac_bt0; /* 0x058 */
+ uint8_t pad4[2];
+ uint8_t reserved[0xa0]; /* 0x060 */
+ uint32_t cpu_ids[0x80]; /* 0x100 */
+ uint8_t scratch[0x200]; /* 0x180 */
+ char serial[32]; /* 0x380 */
+ char unk8[32]; /* 0x3a0 */
+ char model[32]; /* 0x3c0 */
+ uint8_t unk9[32]; /* 0x3e0 */
+ uint32_t unk10; /* 0x400 */
+ char soc_name[32]; /* 0x404 */
+} VMAppleCfg;
+
+struct VMAppleCfgState {
+ SysBusDevice parent_obj;
+ VMAppleCfg cfg;
+
+ MemoryRegion mem;
+ char *serial;
+ char *model;
+ char *soc_name;
+};
+
+static void vmapple_cfg_reset(Object *obj, ResetType type)
+{
+ VMAppleCfgState *s = VMAPPLE_CFG(obj);
+ VMAppleCfg *cfg;
+
+ cfg = memory_region_get_ram_ptr(&s->mem);
+ memset((void *)cfg, 0, VMAPPLE_CFG_SIZE);
+ *cfg = s->cfg;
+}
+
+static bool strlcpy_set_error(char *restrict dst, const char *restrict src,
+ size_t dst_size, Error **errp,
+ const char *parent_func, const char *location,
+ const char *buffer_name)
+{
+ size_t len;
+
+ len = g_strlcpy(dst, src, dst_size);
+ if (len < dst_size) { /* len does not count nul terminator */
+ return true;
+ }
+
+ error_setg(errp,
+ "strlcpy_set_error: %s (%s): Destination buffer %s too small "
+ "(need %zu, have %zu)",
+ parent_func, location, buffer_name, len + 1, dst_size);
+ return false;
+}
+
+/*
+ * String copying wrapper that returns and reports a runtime error in
+ * case of truncation due to insufficient destination buffer space.
+ */
+#define strlcpy_array_return_error(dst_array, src, errp) \
+ do { \
+ if (!strlcpy_set_error((dst_array), (src), ARRAY_SIZE(dst_array), (errp),\
+ __func__, stringify(__LINE__), # dst_array)) { \
+ return; \
+ } \
+ } while (0)
+
+static void vmapple_cfg_realize(DeviceState *dev, Error **errp)
+{
+ VMAppleCfgState *s = VMAPPLE_CFG(dev);
+ uint32_t i;
+
+ if (!s->serial) {
+ s->serial = g_strdup("1234");
+ }
+ if (!s->model) {
+ s->model = g_strdup("VM0001");
+ }
+ if (!s->soc_name) {
+ s->soc_name = g_strdup("Apple M1 (Virtual)");
+ }
+
+ strlcpy_array_return_error(s->cfg.serial, s->serial, errp);
+ strlcpy_array_return_error(s->cfg.model, s->model, errp);
+ strlcpy_array_return_error(s->cfg.soc_name, s->soc_name, errp);
+ strlcpy_array_return_error(s->cfg.unk8, "D/A", errp);
+ s->cfg.version = 2;
+ s->cfg.unk1 = 1;
+ s->cfg.unk2 = 1;
+ s->cfg.unk3 = 0x20;
+ s->cfg.unk4 = 0;
+ s->cfg.unk5 = 1;
+ s->cfg.unk6 = 1;
+ s->cfg.unk7 = 0;
+ s->cfg.unk10 = 1;
+
+ if (s->cfg.nr_cpus > ARRAY_SIZE(s->cfg.cpu_ids)) {
+ error_setg(errp,
+ "Failed to create %u CPUs, vmapple machine supports %zu max",
+ s->cfg.nr_cpus, ARRAY_SIZE(s->cfg.cpu_ids));
+ return;
+ }
+ for (i = 0; i < s->cfg.nr_cpus; i++) {
+ s->cfg.cpu_ids[i] = i;
+ }
+}
+
+static void vmapple_cfg_init(Object *obj)
+{
+ VMAppleCfgState *s = VMAPPLE_CFG(obj);
+
+ memory_region_init_ram(&s->mem, obj, "VMApple Config", VMAPPLE_CFG_SIZE,
+ &error_fatal);
+ sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mem);
+}
+
+static Property vmapple_cfg_properties[] = {
+ DEFINE_PROP_UINT32("nr-cpus", VMAppleCfgState, cfg.nr_cpus, 1),
+ DEFINE_PROP_UINT64("ecid", VMAppleCfgState, cfg.ecid, 0),
+ DEFINE_PROP_UINT64("ram-size", VMAppleCfgState, cfg.ram_size, 0),
+ DEFINE_PROP_UINT32("run_installer1", VMAppleCfgState, cfg.run_installer1, 0),
+ DEFINE_PROP_UINT32("run_installer2", VMAppleCfgState, cfg.run_installer2, 0),
+ DEFINE_PROP_UINT32("rnd", VMAppleCfgState, cfg.rnd, 0),
+ DEFINE_PROP_MACADDR("mac-en0", VMAppleCfgState, cfg.mac_en0),
+ DEFINE_PROP_MACADDR("mac-en1", VMAppleCfgState, cfg.mac_en1),
+ DEFINE_PROP_MACADDR("mac-wifi0", VMAppleCfgState, cfg.mac_wifi0),
+ DEFINE_PROP_MACADDR("mac-bt0", VMAppleCfgState, cfg.mac_bt0),
+ DEFINE_PROP_STRING("serial", VMAppleCfgState, serial),
+ DEFINE_PROP_STRING("model", VMAppleCfgState, model),
+ DEFINE_PROP_STRING("soc_name", VMAppleCfgState, soc_name),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void vmapple_cfg_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ ResettableClass *rc = RESETTABLE_CLASS(klass);
+
+ dc->realize = vmapple_cfg_realize;
+ dc->desc = "VMApple Configuration Region";
+ device_class_set_props(dc, vmapple_cfg_properties);
+ rc->phases.hold = vmapple_cfg_reset;
+}
+
+static const TypeInfo vmapple_cfg_info = {
+ .name = TYPE_VMAPPLE_CFG,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(VMAppleCfgState),
+ .instance_init = vmapple_cfg_init,
+ .class_init = vmapple_cfg_class_init,
+};
+
+static void vmapple_cfg_register_types(void)
+{
+ type_register_static(&vmapple_cfg_info);
+}
+
+type_init(vmapple_cfg_register_types)
@@ -1,2 +1,3 @@
system_ss.add(when: 'CONFIG_VMAPPLE_AES', if_true: files('aes.c'))
system_ss.add(when: 'CONFIG_VMAPPLE_BDIF', if_true: files('bdif.c'))
+system_ss.add(when: 'CONFIG_VMAPPLE_CFG', if_true: files('cfg.c'))
@@ -12,4 +12,6 @@
#define TYPE_VMAPPLE_BDIF "vmapple-bdif"
+#define TYPE_VMAPPLE_CFG "vmapple-cfg"
+
#endif /* HW_VMAPPLE_VMAPPLE_H */