From 7028187bd003f62e11f41cc8c6a26c1c12755cad Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 14 Jun 2024 15:28:10 +0200 Subject: [PATCH] hw/sd/sdcard: Send NUM_WR_BLOCKS bits MSB first (ACMD22) MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Per sections 3.6.1 (SD Bus Protocol), 4.3.4 "Data Write" and 7.3.2 (Responses): In the CMD line the Most Significant Bit is transmitted first. Use the stl_be_p() helper to store the value in big-endian. Fixes: a1bb27b1e9 ("Initial SD card emulation") Signed-off-by: Philippe Mathieu-Daudé Tested-by: Cédric Le Goater Reviewed-by: Peter Maydell Message-Id: <20240628070216.92609-9-philmd@linaro.org> --- hw/sd/sd.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 1e9530f9ae..54bb0ff1c9 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1669,8 +1669,7 @@ static sd_rsp_type_t sd_app_command(SDState *sd, case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ switch (sd->state) { case sd_transfer_state: - *(uint32_t *) sd->data = sd->blk_written; - + stl_be_p(sd->data, sd->blk_written); sd->state = sd_sendingdata_state; sd->data_start = 0; sd->data_offset = 0; -- 2.30.2