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-rw-r--r--hw/sd/sd.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 5137168d66..1cc16bfd31 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -920,6 +920,11 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
sd->multi_blk_cnt = 0;
}
+ if (sd_cmd_class[req.cmd] == 6 && FIELD_EX32(sd->ocr, OCR, CARD_CAPACITY)) {
+ /* Only Standard Capacity cards support class 6 commands */
+ return sd_illegal;
+ }
+
switch (req.cmd) {
/* Basic commands (Class 0 and Class 1) */
case 0: /* CMD0: GO_IDLE_STATE */