[Qemu-devel] [Bug 1809291] Re: SD Card not working in Ubuntu 18.10 (CMD 2, 3 timeout). The device worked fine in Ubuntu 18.04 and earlier versions but not in Ubuntu 18.10

[Philippe Mathieu-Daudé]

The offending code is:

$ git diff -w 
4e5cc6756586e967993187657dfcdde4e00288d9~..4e5cc6756586e967993187657dfcdde4e00288d9
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -1537,7 +1537,7 @@ static sd_rsp_type_t sd_app_command(SDState *sd,
             }
         }
 
-        if (req.arg & ACMD41_ENQUIRY_MASK) {
+        if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) {
             /* We accept any voltage.  10000 V is nothing.
              *
              * Once we're powered up, we advance straight to ready state

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https://bugs.launchpad.net/bugs/1809291

Title:
  SD Card not working in Ubuntu 18.10 (CMD 2,3 timeout).  The device
  worked fine in Ubuntu 18.04 and earlier versions but not in Ubuntu
  18.10

Status in QEMU:
  Confirmed

Bug description:
  ARM PL181 MMC card no longer working in qemu-system-arm in Ubuntu 18.10
  The MMC driver code worked fine in Ubuntu 15.10 to 18.04.
  The command to run qemu-system-arm is

      qemu-system-arm -M versatilepb -m 256M -sd sdimage -kernel t.bin
  -serial mon:stdio

  During SDC initialization, SDC commands 2, 3, 9, 13, 7, 16 all timeout, 
  which cause subsequent read/write commands 17/24 to fail also.

  Tried both ARM versatilepb and realview-pb-a8, realview-pbx-a9 boards:
  all the same.

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