From f6fb1f9b319feac09119848d206b07640ddd39e7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Tue, 15 May 2018 14:58:44 +0100 Subject: [PATCH] sdcard: Correct CRC16 offset in sd_function_switch() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Per the Physical Layer Simplified Spec. "4.3.10.4 Switch Function Status": The block length is predefined to 512 bits and "4.10.2 SD Status": The SD Status contains status bits that are related to the SD Memory Card proprietary features and may be used for future application-specific usage. The size of the SD Status is one data block of 512 bit. The content of this register is transmitted to the Host over the DAT bus along with a 16-bit CRC. Thus the 16-bit CRC goes at offset 64. Signed-off-by: Philippe Mathieu-Daudé Message-id: 20180509060104.4458-3-f4bug@amsat.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- hw/sd/sd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 235e0518d6..7af19fa06c 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -787,7 +787,7 @@ static void sd_function_switch(SDState *sd, uint32_t arg) sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); } memset(&sd->data[17], 0, 47); - stw_be_p(sd->data + 65, sd_crc16(sd->data, 64)); + stw_be_p(sd->data + 64, sd_crc16(sd->data, 64)); } static inline bool sd_wp_addr(SDState *sd, uint64_t addr)