[PATCH 4/4] mmc: sandbox: Set the response

[Sean Anderson]

The mmc subsystem checks the response, but we (almost) never set it. Add a
bare-bones implementation. Technically, we are supposed to return our
current state in our responses, but I don't think the subsystem checks it.

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
---

 drivers/mmc/sandbox_mmc.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/sandbox_mmc.c b/drivers/mmc/sandbox_mmc.c
index 60a6be0add..8922eeba2a 100644
--- a/drivers/mmc/sandbox_mmc.c
+++ b/drivers/mmc/sandbox_mmc.c
@@ -44,6 +44,9 @@ static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 	struct mmc *mmc = mmc_get_mmc_dev(dev);
 	static ulong erase_start, erase_end;
 
+	/* Default R1 response */
+	cmd->response[0] = R1_READY_FOR_DATA;
+
 	switch (cmd->cmdidx) {
 	case MMC_CMD_ALL_SEND_CID:
 		memset(cmd->response, '\0', sizeof(cmd->response));
@@ -55,8 +58,8 @@ static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 	case SD_CMD_SEND_IF_COND:
 		cmd->response[0] = 0xaa;
 		break;
-	case MMC_CMD_SEND_STATUS:
-		cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
+	case SD_CMD_APP_SD_STATUS:
+		cmd->response[0] |= R1_APP_CMD;
 		memset(data->dest, '\0', data->blocks * data->blocksize);
 		break;
 	case MMC_CMD_SELECT_CARD:
@@ -106,6 +109,7 @@ static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 		cmd->response[2] = 0;
 		break;
 	case MMC_CMD_APP_CMD:
+		cmd->response[0] |= R1_APP_CMD;
 		break;
 	case MMC_CMD_SET_BLOCKLEN:
 		debug("block len %d\n", cmd->cmdarg);
@@ -113,11 +117,13 @@ static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 	case SD_CMD_APP_SEND_SCR: {
 		u32 *scr = (u32 *)data->dest;
 
+		cmd->response[0] |= R1_APP_CMD;
 		scr[0] = cpu_to_be32(2 << 24 | 1 << 15);  /* SD version 3 */
 		break;
 	}
 	default:
 		debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
+		cmd->response[0] |= R1_ILLEGAL_COMMAND;
 		break;
 	}
 
-- 
2.35.1