These two issues should now be fixed in qemu git master by commits
25881d3..3799ce4.
** Changed in: qemu
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/597641
Title:
SD card state change from ident to stby
Status in QEMU:
Fix Committed
Bug description:
My environment
host : Linux PC(2.6.29.4)
Target: ARM-CortexA8
I am not running any OS on the target.
Below is my command line:
../src/arm-softmmu/qemu-system-arm -M FPGA_NOOS -kernel elfImage -nographic
-sd sd.img
Problem scenario
1. CMD13 issued immediately after identication phase reports SD card state as
"ident" instead of "stby".
2. class 0(basic) commands are reported as "ILLEGAL_COMMAND" after the card
is locked.
Observation
1. In function sd_do_command(), the status of *previous* command is reflected
only after the call to sd_set_status(sd). The variable "last_status" should
contain the updated value of sd->card_status in order to correctly indicate
*last command's* card status.
2. A "not" condition is missing in the if statement in the function
sd_do_command(), thereby falsely exiting the function for class0 commands
issued after card is locked.
Below is the patch file that seems to be taking care of the above two
problems.
*** sd-0.12.4.c 2010-06-23 13:56:05.000000000 +0530
--- sd-0.12.4.rudra.c 2010-06-23 14:08:10.000000000 +0530
***************
*** 1265,1278 ****
sd->card_status &= ~CARD_STATUS_B;
sd_set_status(sd);
if (last_status & CARD_IS_LOCKED)
! if (((last_status & APP_CMD) &&
req->cmd == 41) ||
(!(last_status & APP_CMD) &&
(sd_cmd_class[req->cmd] == 0 ||
sd_cmd_class[req->cmd] == 7 ||
! req->cmd == 16 || req->cmd == 55))) {
sd->card_status |= ILLEGAL_COMMAND;
fprintf(stderr, "SD: Card is locked\n");
return 0;
--- 1265,1279 ----
sd->card_status &= ~CARD_STATUS_B;
sd_set_status(sd);
+ last_status = sd->card_status;
if (last_status & CARD_IS_LOCKED)
! if (!(((last_status & APP_CMD) &&
req->cmd == 41) ||
(!(last_status & APP_CMD) &&
(sd_cmd_class[req->cmd] == 0 ||
sd_cmd_class[req->cmd] == 7 ||
! req->cmd == 16 || req->cmd == 55)))) {
sd->card_status |= ILLEGAL_COMMAND;
fprintf(stderr, "SD: Card is locked\n");
return 0;
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