Dear Dr. KC.Wang,
Download qemu-4.2.0-rc4 source code, change hw/sd/sd.c at line 1560 like
follows and remake
(line: 1560)
if (req.arg & ACMD41_ENQUIRY_MASK) {
/*if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) {*/
BTW, here is my micro-kernel-os for arm platform based the contents
from your books, thanks !
https://github.com/MisaZhu/micro_kernel_os
Misa.Z
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You received this bug notification because you are a member of qemu-
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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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