From: Bin Meng <bin.meng@windriver.com>
Per the "Physical Layer Specification Version 8.00", table 4-26
(SD mode) and table 7-3 (SPI mode) command descriptions, the
following commands:
- CMD28 (SET_WRITE_PROT)
- CMD29 (CLR_WRITE_PROT)
- CMD30 (SEND_WRITE_PROT)
are only supported by SDSC cards.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
---
Changes in v2:
- new patch: sd: Only SDSC cards support CMD28/29/30
hw/sd/sd.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index a6a0b3dcc6..273bae0a9a 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -1284,6 +1284,10 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
/* Write protection (Class 6) */
case 28: /* CMD28: SET_WRITE_PROT */
+ if (sd->size > SDSC_MAX_CAPACITY) {
+ return sd_illegal;
+ }
+
switch (sd->state) {
case sd_transfer_state:
if (addr >= sd->size) {
@@ -1303,6 +1307,10 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
break;
case 29: /* CMD29: CLR_WRITE_PROT */
+ if (sd->size > SDSC_MAX_CAPACITY) {
+ return sd_illegal;
+ }
+
switch (sd->state) {
case sd_transfer_state:
if (addr >= sd->size) {
@@ -1322,6 +1330,10 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
break;
case 30: /* CMD30: SEND_WRITE_PROT */
+ if (sd->size > SDSC_MAX_CAPACITY) {
+ return sd_illegal;
+ }
+
switch (sd->state) {
case sd_transfer_state:
sd->state = sd_sendingdata_state;
--
2.25.1