diff options
| author | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2020-06-03 19:59:16 +0200 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2020-07-14 15:45:58 +0200 |
| commit | 9157dd597d293ab7f599f4d96c3fe8a6e07c633d (patch) | |
| tree | c60633c25a5d238edfb4a22c515e790595d50eac /hw | |
| parent | 6a289a5ba3383e17fb47029720425bef42e424d7 (diff) | |
hw/sd/sdcard: Restrict Class 6 commands to SCSD cards
Only SCSD cards support Class 6 (Block Oriented Write Protection)
commands.
"SD Specifications Part 1 Physical Layer Simplified Spec. v3.01"
4.3.14 Command Functional Difference in Card Capacity Types
* Write Protected Group
SDHC and SDXC do not support write-protected groups. Issuing
CMD28, CMD29 and CMD30 generates the ILLEGAL_COMMAND error.
Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200630133912.9428-7-f4bug@amsat.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/sd/sd.c | 5 |
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 */ |