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hw/sd: Fix incorrect populated function switch status data structure 

At present the function switch status data structure bit [399:376]
are wrongly pupulated. These 3 bytes encode function switch status
for the 6 function groups, with 4 bits per group, starting from
function group 6 at bit 399, then followed by function group 5 at
bit 395, and so on.

However the codes mistakenly fills in the function group 1 status
at bit 399. This fixes the code logic.

Fixes: a1bb27b1e9 ("SD card emulation (initial implementation)")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Message-Id: <1598021136-49525-1-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Bin Meng 2020-08-21 22:45:35 +08:00 committed by Philippe Mathieu-Daudé
parent 618e0be1ba
commit b638627c72
1 changed files with 2 additions and 1 deletions
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3
hw/sd/sd.c
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@ -807,11 +807,12 @@ static void sd_function_switch(SDState *sd, uint32_t arg)
sd->data[11] = 0x43;
sd->data[12] = 0x80; /* Supported group 1 functions */
sd->data[13] = 0x03;
for (i = 0; i < 6; i ++) {
new_func = (arg >> (i * 4)) & 0x0f;
if (mode && new_func != 0x0f)
sd->function_group[i] = new_func;
sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4);
sd->data[16 - (i >> 1)] |= new_func << ((i % 2) * 4);
}
memset(&sd->data[17], 0, 47);
stw_be_p(sd->data + 64, sd_crc16(sd->data, 64));