From: Bin Meng <bin.m...@windriver.com>
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.m...@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Tested-by: Sai Pavan Boddu <sai.pavan.bo...@xilinx.com>
Message-Id: <1598021136-49525-1-git-send-email-bmeng...@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
hw/sd/sd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 7c9d956f113..805e21fc883 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -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));
--
2.26.2
