--- /dev/null
+/*
+ * QEMU Firmware configuration device emulation
+ *
+ * Copyright (c) 2008 Gleb Natapov
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "hw/hw.h"
+#include "sysemu/sysemu.h"
+#include "hw/isa/isa.h"
+#include "hw/nvram/fw_cfg.h"
+#include "hw/sysbus.h"
+#include "trace.h"
+#include "qemu/error-report.h"
+#include "qemu/config-file.h"
+
+#define FW_CFG_SIZE 2
+#define FW_CFG_NAME "fw_cfg"
+#define FW_CFG_PATH "/machine/" FW_CFG_NAME
+
+#define TYPE_FW_CFG "fw_cfg"
+#define TYPE_FW_CFG_IO "fw_cfg_io"
+#define TYPE_FW_CFG_MEM "fw_cfg_mem"
+
+#define FW_CFG(obj) OBJECT_CHECK(FWCfgState, (obj), TYPE_FW_CFG)
+#define FW_CFG_IO(obj) OBJECT_CHECK(FWCfgIoState, (obj), TYPE_FW_CFG_IO)
+#define FW_CFG_MEM(obj) OBJECT_CHECK(FWCfgMemState, (obj), TYPE_FW_CFG_MEM)
+
+typedef struct FWCfgEntry {
+ uint32_t len;
+ uint8_t *data;
+ void *callback_opaque;
+ FWCfgReadCallback read_callback;
+} FWCfgEntry;
+
+struct FWCfgState {
+ /*< private >*/
+ SysBusDevice parent_obj;
+ /*< public >*/
+
+ FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
+ FWCfgFiles *files;
+ uint16_t cur_entry;
+ uint32_t cur_offset;
+ Notifier machine_ready;
+};
+
+struct FWCfgIoState {
+ /*< private >*/
+ FWCfgState parent_obj;
+ /*< public >*/
+
+ MemoryRegion comb_iomem;
+ uint32_t iobase;
+};
+
+struct FWCfgMemState {
+ /*< private >*/
+ FWCfgState parent_obj;
+ /*< public >*/
+
+ MemoryRegion ctl_iomem, data_iomem;
+ uint32_t data_width;
+ MemoryRegionOps wide_data_ops;
+};
+
+#define JPG_FILE 0
+#define BMP_FILE 1
+
+static char *read_splashfile(char *filename, gsize *file_sizep,
+ int *file_typep)
+{
+ GError *err = NULL;
+ gboolean res;
+ gchar *content;
+ int file_type;
+ unsigned int filehead;
+ int bmp_bpp;
+
+ res = g_file_get_contents(filename, &content, file_sizep, &err);
+ if (res == FALSE) {
+ error_report("failed to read splash file '%s'", filename);
+ g_error_free(err);
+ return NULL;
+ }
+
+ /* check file size */
+ if (*file_sizep < 30) {
+ goto error;
+ }
+
+ /* check magic ID */
+ filehead = ((content[0] & 0xff) + (content[1] << 8)) & 0xffff;
+ if (filehead == 0xd8ff) {
+ file_type = JPG_FILE;
+ } else if (filehead == 0x4d42) {
+ file_type = BMP_FILE;
+ } else {
+ goto error;
+ }
+
+ /* check BMP bpp */
+ if (file_type == BMP_FILE) {
+ bmp_bpp = (content[28] + (content[29] << 8)) & 0xffff;
+ if (bmp_bpp != 24) {
+ goto error;
+ }
+ }
+
+ /* return values */
+ *file_typep = file_type;
+
+ return content;
+
+error:
+ error_report("splash file '%s' format not recognized; must be JPEG "
+ "or 24 bit BMP", filename);
+ g_free(content);
+ return NULL;
+}
+
+static void fw_cfg_bootsplash(FWCfgState *s)
+{
+ int boot_splash_time = -1;
+ const char *boot_splash_filename = NULL;
+ char *p;
+ char *filename, *file_data;
+ gsize file_size;
+ int file_type;
+ const char *temp;
+
+ /* get user configuration */
+ QemuOptsList *plist = qemu_find_opts("boot-opts");
+ QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+ if (opts != NULL) {
+ temp = qemu_opt_get(opts, "splash");
+ if (temp != NULL) {
+ boot_splash_filename = temp;
+ }
+ temp = qemu_opt_get(opts, "splash-time");
+ if (temp != NULL) {
+ p = (char *)temp;
+ boot_splash_time = strtol(p, (char **)&p, 10);
+ }
+ }
+
+ /* insert splash time if user configurated */
+ if (boot_splash_time >= 0) {
+ /* validate the input */
+ if (boot_splash_time > 0xffff) {
+ error_report("splash time is big than 65535, force it to 65535.");
+ boot_splash_time = 0xffff;
+ }
+ /* use little endian format */
+ qemu_extra_params_fw[0] = (uint8_t)(boot_splash_time & 0xff);
+ qemu_extra_params_fw[1] = (uint8_t)((boot_splash_time >> 8) & 0xff);
+ fw_cfg_add_file(s, "etc/boot-menu-wait", qemu_extra_params_fw, 2);
+ }
+
+ /* insert splash file if user configurated */
+ if (boot_splash_filename != NULL) {
+ filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, boot_splash_filename);
+ if (filename == NULL) {
+ error_report("failed to find file '%s'.", boot_splash_filename);
+ return;
+ }
+
+ /* loading file data */
+ file_data = read_splashfile(filename, &file_size, &file_type);
+ if (file_data == NULL) {
+ g_free(filename);
+ return;
+ }
+ if (boot_splash_filedata != NULL) {
+ g_free(boot_splash_filedata);
+ }
+ boot_splash_filedata = (uint8_t *)file_data;
+ boot_splash_filedata_size = file_size;
+
+ /* insert data */
+ if (file_type == JPG_FILE) {
+ fw_cfg_add_file(s, "bootsplash.jpg",
+ boot_splash_filedata, boot_splash_filedata_size);
+ } else {
+ fw_cfg_add_file(s, "bootsplash.bmp",
+ boot_splash_filedata, boot_splash_filedata_size);
+ }
+ g_free(filename);
+ }
+}
+
+static void fw_cfg_reboot(FWCfgState *s)
+{
+ int reboot_timeout = -1;
+ char *p;
+ const char *temp;
+
+ /* get user configuration */
+ QemuOptsList *plist = qemu_find_opts("boot-opts");
+ QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+ if (opts != NULL) {
+ temp = qemu_opt_get(opts, "reboot-timeout");
+ if (temp != NULL) {
+ p = (char *)temp;
+ reboot_timeout = strtol(p, (char **)&p, 10);
+ }
+ }
+ /* validate the input */
+ if (reboot_timeout > 0xffff) {
+ error_report("reboot timeout is larger than 65535, force it to 65535.");
+ reboot_timeout = 0xffff;
+ }
+ fw_cfg_add_file(s, "etc/boot-fail-wait", g_memdup(&reboot_timeout, 4), 4);
+}
+
+static void fw_cfg_write(FWCfgState *s, uint8_t value)
+{
+ /* nothing, write support removed in QEMU v2.4+ */
+}
+
+static int fw_cfg_select(FWCfgState *s, uint16_t key)
+{
+ int ret;
+
+ s->cur_offset = 0;
+ if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
+ s->cur_entry = FW_CFG_INVALID;
+ ret = 0;
+ } else {
+ s->cur_entry = key;
+ ret = 1;
+ }
+
+ trace_fw_cfg_select(s, key, ret);
+ return ret;
+}
+
+static uint8_t fw_cfg_read(FWCfgState *s)
+{
+ int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
+ FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
+ uint8_t ret;
+
+ if (s->cur_entry == FW_CFG_INVALID || !e->data || s->cur_offset >= e->len)
+ ret = 0;
+ else {
+ if (e->read_callback) {
+ e->read_callback(e->callback_opaque, s->cur_offset);
+ }
+ ret = e->data[s->cur_offset++];
+ }
+
+ trace_fw_cfg_read(s, ret);
+ return ret;
+}
+
+static uint64_t fw_cfg_data_mem_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ FWCfgState *s = opaque;
+ uint64_t value = 0;
+ unsigned i;
+
+ for (i = 0; i < size; ++i) {
+ value = (value << 8) | fw_cfg_read(s);
+ }
+ return value;
+}
+
+static void fw_cfg_data_mem_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ FWCfgState *s = opaque;
+ unsigned i = size;
+
+ do {
+ fw_cfg_write(s, value >> (8 * --i));
+ } while (i);
+}
+
+static bool fw_cfg_data_mem_valid(void *opaque, hwaddr addr,
+ unsigned size, bool is_write)
+{
+ return addr == 0;
+}
+
+static void fw_cfg_ctl_mem_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ fw_cfg_select(opaque, (uint16_t)value);
+}
+
+static bool fw_cfg_ctl_mem_valid(void *opaque, hwaddr addr,
+ unsigned size, bool is_write)
+{
+ return is_write && size == 2;
+}
+
+static uint64_t fw_cfg_comb_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ return fw_cfg_read(opaque);
+}
+
+static void fw_cfg_comb_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ switch (size) {
+ case 1:
+ fw_cfg_write(opaque, (uint8_t)value);
+ break;
+ case 2:
+ fw_cfg_select(opaque, (uint16_t)value);
+ break;
+ }
+}
+
+static bool fw_cfg_comb_valid(void *opaque, hwaddr addr,
+ unsigned size, bool is_write)
+{
+ return (size == 1) || (is_write && size == 2);
+}
+
+static const MemoryRegionOps fw_cfg_ctl_mem_ops = {
+ .write = fw_cfg_ctl_mem_write,
+ .endianness = DEVICE_BIG_ENDIAN,
+ .valid.accepts = fw_cfg_ctl_mem_valid,
+};
+
+static const MemoryRegionOps fw_cfg_data_mem_ops = {
+ .read = fw_cfg_data_mem_read,
+ .write = fw_cfg_data_mem_write,
+ .endianness = DEVICE_BIG_ENDIAN,
+ .valid = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ .accepts = fw_cfg_data_mem_valid,
+ },
+};
+
+static const MemoryRegionOps fw_cfg_comb_mem_ops = {
+ .read = fw_cfg_comb_read,
+ .write = fw_cfg_comb_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid.accepts = fw_cfg_comb_valid,
+};
+
+static void fw_cfg_reset(DeviceState *d)
+{
+ FWCfgState *s = FW_CFG(d);
+
+ fw_cfg_select(s, 0);
+}
+
+/* Save restore 32 bit int as uint16_t
+ This is a Big hack, but it is how the old state did it.
+ Or we broke compatibility in the state, or we can't use struct tm
+ */
+
+static int get_uint32_as_uint16(QEMUFile *f, void *pv, size_t size)
+{
+ uint32_t *v = pv;
+ *v = qemu_get_be16(f);
+ return 0;
+}
+
+static void put_unused(QEMUFile *f, void *pv, size_t size)
+{
+ fprintf(stderr, "uint32_as_uint16 is only used for backward compatibility.\n");
+ fprintf(stderr, "This functions shouldn't be called.\n");
+}
+
+static const VMStateInfo vmstate_hack_uint32_as_uint16 = {
+ .name = "int32_as_uint16",
+ .get = get_uint32_as_uint16,
+ .put = put_unused,
+};
+
+#define VMSTATE_UINT16_HACK(_f, _s, _t) \
+ VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t)
+
+
+static bool is_version_1(void *opaque, int version_id)
+{
+ return version_id == 1;
+}
+
+static const VMStateDescription vmstate_fw_cfg = {
+ .name = "fw_cfg",
+ .version_id = 2,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(cur_entry, FWCfgState),
+ VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1),
+ VMSTATE_UINT32_V(cur_offset, FWCfgState, 2),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void fw_cfg_add_bytes_read_callback(FWCfgState *s, uint16_t key,
+ FWCfgReadCallback callback,
+ void *callback_opaque,
+ void *data, size_t len)
+{
+ int arch = !!(key & FW_CFG_ARCH_LOCAL);
+
+ key &= FW_CFG_ENTRY_MASK;
+
+ assert(key < FW_CFG_MAX_ENTRY && len < UINT32_MAX);
+ assert(s->entries[arch][key].data == NULL); /* avoid key conflict */
+
+ s->entries[arch][key].data = data;
+ s->entries[arch][key].len = (uint32_t)len;
+ s->entries[arch][key].read_callback = callback;
+ s->entries[arch][key].callback_opaque = callback_opaque;
+}
+
+static void *fw_cfg_modify_bytes_read(FWCfgState *s, uint16_t key,
+ void *data, size_t len)
+{
+ void *ptr;
+ int arch = !!(key & FW_CFG_ARCH_LOCAL);
+
+ key &= FW_CFG_ENTRY_MASK;
+
+ assert(key < FW_CFG_MAX_ENTRY && len < UINT32_MAX);
+
+ /* return the old data to the function caller, avoid memory leak */
+ ptr = s->entries[arch][key].data;
+ s->entries[arch][key].data = data;
+ s->entries[arch][key].len = len;
+ s->entries[arch][key].callback_opaque = NULL;
+
+ return ptr;
+}
+
+void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len)
+{
+ fw_cfg_add_bytes_read_callback(s, key, NULL, NULL, data, len);
+}
+
+void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value)
+{
+ size_t sz = strlen(value) + 1;
+
+ fw_cfg_add_bytes(s, key, g_memdup(value, sz), sz);
+}
+
+void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
+{
+ uint16_t *copy;
+
+ copy = g_malloc(sizeof(value));
+ *copy = cpu_to_le16(value);
+ fw_cfg_add_bytes(s, key, copy, sizeof(value));
+}
+
+void fw_cfg_modify_i16(FWCfgState *s, uint16_t key, uint16_t value)
+{
+ uint16_t *copy, *old;
+
+ copy = g_malloc(sizeof(value));
+ *copy = cpu_to_le16(value);
+ old = fw_cfg_modify_bytes_read(s, key, copy, sizeof(value));
+ g_free(old);
+}
+
+void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
+{
+ uint32_t *copy;
+
+ copy = g_malloc(sizeof(value));
+ *copy = cpu_to_le32(value);
+ fw_cfg_add_bytes(s, key, copy, sizeof(value));
+}
+
+void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
+{
+ uint64_t *copy;
+
+ copy = g_malloc(sizeof(value));
+ *copy = cpu_to_le64(value);
+ fw_cfg_add_bytes(s, key, copy, sizeof(value));
+}
+
+void fw_cfg_add_file_callback(FWCfgState *s, const char *filename,
+ FWCfgReadCallback callback, void *callback_opaque,
+ void *data, size_t len)
+{
+ int i, index;
+ size_t dsize;
+
+ if (!s->files) {
+ dsize = sizeof(uint32_t) + sizeof(FWCfgFile) * FW_CFG_FILE_SLOTS;
+ s->files = g_malloc0(dsize);
+ fw_cfg_add_bytes(s, FW_CFG_FILE_DIR, s->files, dsize);
+ }
+
+ index = be32_to_cpu(s->files->count);
+ assert(index < FW_CFG_FILE_SLOTS);
+
+ pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name),
+ filename);
+ for (i = 0; i < index; i++) {
+ if (strcmp(s->files->f[index].name, s->files->f[i].name) == 0) {
+ error_report("duplicate fw_cfg file name: %s",
+ s->files->f[index].name);
+ exit(1);
+ }
+ }
+
+ fw_cfg_add_bytes_read_callback(s, FW_CFG_FILE_FIRST + index,
+ callback, callback_opaque, data, len);
+
+ s->files->f[index].size = cpu_to_be32(len);
+ s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index);
+ trace_fw_cfg_add_file(s, index, s->files->f[index].name, len);
+
+ s->files->count = cpu_to_be32(index+1);
+}
+
+void fw_cfg_add_file(FWCfgState *s, const char *filename,
+ void *data, size_t len)
+{
+ fw_cfg_add_file_callback(s, filename, NULL, NULL, data, len);
+}
+
+void *fw_cfg_modify_file(FWCfgState *s, const char *filename,
+ void *data, size_t len)
+{
+ int i, index;
+ void *ptr = NULL;
+
+ assert(s->files);
+
+ index = be32_to_cpu(s->files->count);
+ assert(index < FW_CFG_FILE_SLOTS);
+
+ for (i = 0; i < index; i++) {
+ if (strcmp(filename, s->files->f[i].name) == 0) {
+ ptr = fw_cfg_modify_bytes_read(s, FW_CFG_FILE_FIRST + i,
+ data, len);
+ s->files->f[i].size = cpu_to_be32(len);
+ return ptr;
+ }
+ }
+ /* add new one */
+ fw_cfg_add_file_callback(s, filename, NULL, NULL, data, len);
+ return NULL;
+}
+
+static void fw_cfg_machine_reset(void *opaque)
+{
+ void *ptr;
+ size_t len;
+ FWCfgState *s = opaque;
+ char *bootindex = get_boot_devices_list(&len, false);
+
+ ptr = fw_cfg_modify_file(s, "bootorder", (uint8_t *)bootindex, len);
+ g_free(ptr);
+}
+
+static void fw_cfg_machine_ready(struct Notifier *n, void *data)
+{
+ FWCfgState *s = container_of(n, FWCfgState, machine_ready);
+ qemu_register_reset(fw_cfg_machine_reset, s);
+}
+
+
+
+static void fw_cfg_init1(DeviceState *dev)
+{
+ FWCfgState *s = FW_CFG(dev);
+
+ assert(!object_resolve_path(FW_CFG_PATH, NULL));
+
+ object_property_add_child(qdev_get_machine(), FW_CFG_NAME, OBJECT(s), NULL);
+
+ qdev_init_nofail(dev);
+
+ fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4);
+ fw_cfg_add_i32(s, FW_CFG_ID, 1);
+ fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16);
+ fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC));
+ fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
+ fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);
+ fw_cfg_bootsplash(s);
+ fw_cfg_reboot(s);
+
+ s->machine_ready.notify = fw_cfg_machine_ready;
+ qemu_add_machine_init_done_notifier(&s->machine_ready);
+}
+
+FWCfgState *fw_cfg_init_io(uint32_t iobase)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, TYPE_FW_CFG_IO);
+ qdev_prop_set_uint32(dev, "iobase", iobase);
+ fw_cfg_init1(dev);
+
+ return FW_CFG(dev);
+}
+
+FWCfgState *fw_cfg_init_mem_wide(hwaddr ctl_addr, hwaddr data_addr,
+ uint32_t data_width)
+{
+ DeviceState *dev;
+ SysBusDevice *sbd;
+
+ dev = qdev_create(NULL, TYPE_FW_CFG_MEM);
+ qdev_prop_set_uint32(dev, "data_width", data_width);
+
+ fw_cfg_init1(dev);
+
+ sbd = SYS_BUS_DEVICE(dev);
+ sysbus_mmio_map(sbd, 0, ctl_addr);
+ sysbus_mmio_map(sbd, 1, data_addr);
+
+ return FW_CFG(dev);
+}
+
+FWCfgState *fw_cfg_init_mem(hwaddr ctl_addr, hwaddr data_addr)
+{
+ return fw_cfg_init_mem_wide(ctl_addr, data_addr,
+ fw_cfg_data_mem_ops.valid.max_access_size);
+}
+
+
+FWCfgState *fw_cfg_find(void)
+{
+ return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL));
+}
+
+static void fw_cfg_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = fw_cfg_reset;
+ dc->vmsd = &vmstate_fw_cfg;
+}
+
+static const TypeInfo fw_cfg_info = {
+ .name = TYPE_FW_CFG,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(FWCfgState),
+ .class_init = fw_cfg_class_init,
+};
+
+
+static Property fw_cfg_io_properties[] = {
+ DEFINE_PROP_UINT32("iobase", FWCfgIoState, iobase, -1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void fw_cfg_io_realize(DeviceState *dev, Error **errp)
+{
+ FWCfgIoState *s = FW_CFG_IO(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ memory_region_init_io(&s->comb_iomem, OBJECT(s), &fw_cfg_comb_mem_ops,
+ FW_CFG(s), "fwcfg", FW_CFG_SIZE);
+ sysbus_add_io(sbd, s->iobase, &s->comb_iomem);
+}
+
+static void fw_cfg_io_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = fw_cfg_io_realize;
+ dc->props = fw_cfg_io_properties;
+}
+
+static const TypeInfo fw_cfg_io_info = {
+ .name = TYPE_FW_CFG_IO,
+ .parent = TYPE_FW_CFG,
+ .instance_size = sizeof(FWCfgIoState),
+ .class_init = fw_cfg_io_class_init,
+};
+
+
+static Property fw_cfg_mem_properties[] = {
+ DEFINE_PROP_UINT32("data_width", FWCfgMemState, data_width, -1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void fw_cfg_mem_realize(DeviceState *dev, Error **errp)
+{
+ FWCfgMemState *s = FW_CFG_MEM(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+ const MemoryRegionOps *data_ops = &fw_cfg_data_mem_ops;
+
+ memory_region_init_io(&s->ctl_iomem, OBJECT(s), &fw_cfg_ctl_mem_ops,
+ FW_CFG(s), "fwcfg.ctl", FW_CFG_SIZE);
+ sysbus_init_mmio(sbd, &s->ctl_iomem);
+
+ if (s->data_width > data_ops->valid.max_access_size) {
+ /* memberwise copy because the "old_mmio" member is const */
+ s->wide_data_ops.read = data_ops->read;
+ s->wide_data_ops.write = data_ops->write;
+ s->wide_data_ops.endianness = data_ops->endianness;
+ s->wide_data_ops.valid = data_ops->valid;
+ s->wide_data_ops.impl = data_ops->impl;
+
+ s->wide_data_ops.valid.max_access_size = s->data_width;
+ s->wide_data_ops.impl.max_access_size = s->data_width;
+ data_ops = &s->wide_data_ops;
+ }
+ memory_region_init_io(&s->data_iomem, OBJECT(s), data_ops, FW_CFG(s),
+ "fwcfg.data", data_ops->valid.max_access_size);
+ sysbus_init_mmio(sbd, &s->data_iomem);
+}
+
+static void fw_cfg_mem_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = fw_cfg_mem_realize;
+ dc->props = fw_cfg_mem_properties;
+}
+
+static const TypeInfo fw_cfg_mem_info = {
+ .name = TYPE_FW_CFG_MEM,
+ .parent = TYPE_FW_CFG,
+ .instance_size = sizeof(FWCfgMemState),
+ .class_init = fw_cfg_mem_class_init,
+};
+
+
+static void fw_cfg_register_types(void)
+{
+ type_register_static(&fw_cfg_info);
+ type_register_static(&fw_cfg_io_info);
+ type_register_static(&fw_cfg_mem_info);
+}
+
+type_init(fw_cfg_register_types)
Code Review / kvmfornfv.git / blobdiff