From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/sd/sd.h |  3 +++
 hw/sd/sd.c         | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index 0d6d9e452b..d35a839f5e 100644
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -96,6 +96,9 @@ OBJECT_DECLARE_TYPE(SDState, SDCardClass, SD_CARD)
 #define TYPE_SD_CARD_SPI "sd-card-spi"
 DECLARE_INSTANCE_CHECKER(SDState, SD_CARD_SPI, TYPE_SD_CARD_SPI)
 
+#define TYPE_EMMC "emmc"
+DECLARE_INSTANCE_CHECKER(SDState, EMMC, TYPE_EMMC)
+
 struct SDCardClass {
     /*< private >*/
     DeviceClass parent_class;
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 92ac57a648..249fad0468 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -2379,6 +2379,13 @@ static const SDProto sd_proto_sd = {
     },
 };
 
+static const SDProto sd_proto_emmc = {
+    /* Only v4.5 is supported */
+    .name = "eMMC",
+    .cmd = {
+    },
+};
+
 static void sd_instance_init(Object *obj)
 {
     SDState *sd = SD_CARD(obj);
@@ -2504,6 +2511,28 @@ static void sd_spi_class_init(ObjectClass *klass, void *data)
     sc->proto = &sd_proto_spi;
 }
 
+static void emmc_realize(DeviceState *dev, Error **errp)
+{
+    SDState *sd = SD_CARD(dev);
+
+    if (sd->spec_version == SD_PHY_SPECv2_00_VERS) {
+        error_setg(errp, "eMMC can not use spec v2.00");
+        return;
+    }
+
+    sd_realize(dev, errp);
+}
+
+static void emmc_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SDCardClass *sc = SD_CARD_CLASS(klass);
+
+    dc->desc = "eMMC";
+    dc->realize = emmc_realize;
+    sc->proto = &sd_proto_emmc;
+}
+
 static const TypeInfo sd_types[] = {
     {
         .name           = TYPE_SD_CARD,
@@ -2519,6 +2548,11 @@ static const TypeInfo sd_types[] = {
         .parent         = TYPE_SD_CARD,
         .class_init     = sd_spi_class_init,
     },
+    {
+        .name = TYPE_EMMC,
+        .parent = TYPE_SD_CARD,
+        .class_init = emmc_class_init,
+    },
 };
 
 DEFINE_TYPES(sd_types)
-- 
2.41.0