diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2011-05-20 10:11:53 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2011-05-22 22:31:45 +0100 |
| commit | 39e594dbcd897849f2ca95b3310ea00fff29ea99 (patch) | |
| tree | 1b74e606cabde3473ab68f9d04751ee9b7a094b2 /hw/sd.c | |
| parent | 1cd087251a488f8731efee4118332d0d6abdd815 (diff) | |
hw/sd.c: Don't complain about SDIO commands CMD52/CMD53
The SDIO specification introduces new commands 52 and 53.
Handle as illegal command but do not complain on stderr,
as SDIO-aware OSes (including Linux) may legitimately use
these in their probing for presence of an SDIO card.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Diffstat (limited to 'hw/sd.c')
| -rw-r--r-- | hw/sd.c | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -1104,6 +1104,17 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, } break; + case 52: + case 53: + /* CMD52, CMD53: reserved for SDIO cards + * (see the SDIO Simplified Specification V2.0) + * Handle as illegal command but do not complain + * on stderr, as some OSes may use these in their + * probing for presence of an SDIO card. + */ + sd->card_status |= ILLEGAL_COMMAND; + return sd_r0; + /* Application specific commands (Class 8) */ case 55: /* CMD55: APP_CMD */ if (sd->rca != rca) |