sdcard: use the correct masked OCR in the R3 reply

use the registerfields API to access the OCR register
Signed-off-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NAlistair Francis <alistair.francis@xilinx.com>
Message-id: 20180215221325.7611-8-f4bug@amsat.org
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/sd/sd.c

@@ -47,8 +47,6 @@
 
 //#define DEBUG_SD 1
 
-#define ACMD41_ENQUIRY_MASK     0x00ffffff
-
 typedef enum {
     sd_r0 = 0,    /* no response */
     sd_r1,        /* normal response command */
@@ -272,13 +270,26 @@ static uint16_t sd_crc16(void *message, size_t width)
 
 #define OCR_POWER_DELAY_NS      500000 /* 0.5ms */
 
+FIELD(OCR, VDD_VOLTAGE_WINDOW,          0, 24)
+FIELD(OCR, VDD_VOLTAGE_WIN_LO,          0,  8)
+FIELD(OCR, DUAL_VOLTAGE_CARD,           7,  1)
+FIELD(OCR, VDD_VOLTAGE_WIN_HI,          8, 16)
+FIELD(OCR, ACCEPT_SWITCH_1V8,          24,  1) /* Only UHS-I */
+FIELD(OCR, UHS_II_CARD,                29,  1) /* Only UHS-II */
 FIELD(OCR, CARD_CAPACITY,              30,  1) /* 0:SDSC, 1:SDHC/SDXC */
 FIELD(OCR, CARD_POWER_UP,              31,  1)
 
+#define ACMD41_ENQUIRY_MASK     0x00ffffff
+#define ACMD41_R3_MASK          (R_OCR_VDD_VOLTAGE_WIN_HI_MASK \
+                               | R_OCR_ACCEPT_SWITCH_1V8_MASK \
+                               | R_OCR_UHS_II_CARD_MASK \
+                               | R_OCR_CARD_CAPACITY_MASK \
+                               | R_OCR_CARD_POWER_UP_MASK)
+
 static void sd_set_ocr(SDState *sd)
 {
-    /* All voltages OK, Standard Capacity SD Memory Card, not yet powered up */
-    sd->ocr = 0x00ffff00;
+    /* All voltages OK */
+    sd->ocr = R_OCR_VDD_VOLTAGE_WIN_HI_MASK;
 }
 
 static void sd_ocr_powerup(void *opaque)
@@ -446,7 +457,7 @@ static void sd_response_r1_make(SDState *sd, uint8_t *response)
 
 static void sd_response_r3_make(SDState *sd, uint8_t *response)
 {
-    stl_be_p(response, sd->ocr);
+    stl_be_p(response, sd->ocr & ACMD41_R3_MASK);
 }
 
 static void sd_response_r6_make(SDState *sd, uint8_t *response)