From: Philippe Mathieu-Daudé Date: Fri, 8 Jun 2018 12:15:34 +0000 (+0100) Subject: sdcard: Disable SEND_IF_COND (CMD8) for Spec v1 X-Git-Tag: qemu-xen-4.12.0-rc1~180^2~2 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=d1b322182bfebd8fe9442c52f50e7ac3acf07edd;p=qemu-xen.git sdcard: Disable SEND_IF_COND (CMD8) for Spec v1 CMD8 is "Reserved" in Spec v1.10. Spec v2.00 introduces the SEND_IF_COND command: 6.4.1 Power Up CMD8 is newly added in the Physical Layer Specification Version 2.00 to support multiple voltage ranges and used to check whether the card supports supplied voltage. The version 2.00 or later host shall issue CMD8 and verify voltage before card initialization. The host that does not support CMD8 shall supply high voltage range. Message-Id: 201204252110.20873.paul@codesourcery.com Signed-off-by: Philippe Mathieu-Daudé Message-id: 20180607180641.874-5-f4bug@amsat.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 1ae085de69..3ec0f71f24 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1018,7 +1018,9 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req) break; case 8: /* CMD8: SEND_IF_COND */ - /* Physical Layer Specification Version 2.00 command */ + if (sd->spec_version < SD_PHY_SPECv2_00_VERS) { + break; + } if (sd->state != sd_idle_state) { break; }