+
+int sandbox_sf_bind_emul(struct sandbox_state *state, int busnum, int cs,
+ struct udevice *bus, int of_offset, const char *spec)
+{
+ struct udevice *emul;
+ char name[20], *str;
+ struct driver *drv;
+ int ret;
+
+ /* now the emulator */
+ strncpy(name, spec, sizeof(name) - 6);
+ name[sizeof(name) - 6] = '\0';
+ strcat(name, "-emul");
+ str = strdup(name);
+ if (!str)
+ return -ENOMEM;
+ drv = lists_driver_lookup_name("sandbox_sf_emul");
+ if (!drv) {
+ puts("Cannot find sandbox_sf_emul driver\n");
+ return -ENOENT;
+ }
+ ret = device_bind(bus, drv, str, NULL, of_offset, &emul);
+ if (ret) {
+ printf("Cannot create emul device for spec '%s' (err=%d)\n",
+ spec, ret);
+ return ret;
+ }
+ state->spi[busnum][cs].emul = emul;
+
+ return 0;
+}
+
+void sandbox_sf_unbind_emul(struct sandbox_state *state, int busnum, int cs)
+{
+ struct udevice *dev;
+
+ dev = state->spi[busnum][cs].emul;
+ device_remove(dev);
+ device_unbind(dev);
+ state->spi[busnum][cs].emul = NULL;
+}
+
+static int sandbox_sf_bind_bus_cs(struct sandbox_state *state, int busnum,
+ int cs, const char *spec)
+{
+ struct udevice *bus, *slave;
+ int ret;
+
+ ret = uclass_find_device_by_seq(UCLASS_SPI, busnum, true, &bus);
+ if (ret) {
+ printf("Invalid bus %d for spec '%s' (err=%d)\n", busnum,
+ spec, ret);
+ return ret;
+ }
+ ret = spi_find_chip_select(bus, cs, &slave);
+ if (!ret) {
+ printf("Chip select %d already exists for spec '%s'\n", cs,
+ spec);
+ return -EEXIST;
+ }
+
+ ret = device_bind_driver(bus, "spi_flash_std", spec, &slave);
+ if (ret)
+ return ret;
+
+ return sandbox_sf_bind_emul(state, busnum, cs, bus, -1, spec);
+}
+
+int sandbox_spi_get_emul(struct sandbox_state *state,
+ struct udevice *bus, struct udevice *slave,
+ struct udevice **emulp)
+{
+ struct sandbox_spi_info *info;
+ int busnum = bus->seq;
+ int cs = spi_chip_select(slave);
+ int ret;
+
+ info = &state->spi[busnum][cs];
+ if (!info->emul) {
+ /* Use the same device tree node as the SPI flash device */
+ debug("%s: busnum=%u, cs=%u: binding SPI flash emulation: ",
+ __func__, busnum, cs);
+ ret = sandbox_sf_bind_emul(state, busnum, cs, bus,
+ slave->of_offset, slave->name);
+ if (ret) {
+ debug("failed (err=%d)\n", ret);
+ return ret;
+ }
+ debug("OK\n");
+ }
+ *emulp = info->emul;
+
+ return 0;
+}
+
+int dm_scan_other(bool pre_reloc_only)
+{
+ struct sandbox_state *state = state_get_current();
+ int busnum, cs;
+
+ if (pre_reloc_only)
+ return 0;
+ for (busnum = 0; busnum < CONFIG_SANDBOX_SPI_MAX_BUS; busnum++) {
+ for (cs = 0; cs < CONFIG_SANDBOX_SPI_MAX_CS; cs++) {
+ const char *spec = state->spi[busnum][cs].spec;
+ int ret;
+
+ if (spec) {
+ ret = sandbox_sf_bind_bus_cs(state, busnum,
+ cs, spec);
+ if (ret) {
+ debug("%s: Bind failed for bus %d, cs %d\n",
+ __func__, busnum, cs);
+ return ret;
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+#endif
+
+static const struct udevice_id sandbox_sf_ids[] = {
+ { .compatible = "sandbox,spi-flash" },
+ { }
+};
+
+U_BOOT_DRIVER(sandbox_sf_emul) = {
+ .name = "sandbox_sf_emul",
+ .id = UCLASS_SPI_EMUL,
+ .of_match = sandbox_sf_ids,
+ .ofdata_to_platdata = sandbox_sf_ofdata_to_platdata,
+ .probe = sandbox_sf_probe,
+ .remove = sandbox_sf_remove,
+ .priv_auto_alloc_size = sizeof(struct sandbox_spi_flash),
+ .platdata_auto_alloc_size = sizeof(struct sandbox_spi_flash_plat_data),
+ .ops = &sandbox_sf_emul_ops,
+};