[PATCH v3 2/2] hw/sd: sd: Correct the maximum size of a Standard Capacity SD Memory Card

[Bin Meng]

From: Bin Meng <bin.meng@windriver.com>

Per the SD spec, Standard Capacity SD Memory Card (SDSC) supports
capacity up to and including 2 GiB.

Fixes: 2d7adea4fe ("hw/sd: Support SDHC size cards")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>

---

Changes in v3:
- add Reviewed-by tag from Philippe Mathieu-Daudé
- add Tested-by tag from Sai Pavan Boddu

Changes in v2:
- fix SDSC size check in sd_set_csd() too

 hw/sd/sd.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 3226404..254d713 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -50,6 +50,8 @@
 
 //#define DEBUG_SD 1
 
+#define SDSC_MAX_CAPACITY   (2 * GiB)
+
 typedef enum {
     sd_r0 = 0,    /* no response */
     sd_r1,        /* normal response command */
@@ -313,7 +315,7 @@ static void sd_ocr_powerup(void *opaque)
     /* card power-up OK */
     sd->ocr = FIELD_DP32(sd->ocr, OCR, CARD_POWER_UP, 1);
 
-    if (sd->size > 1 * GiB) {
+    if (sd->size > SDSC_MAX_CAPACITY) {
         sd->ocr = FIELD_DP32(sd->ocr, OCR, CARD_CAPACITY, 1);
     }
 }
@@ -385,7 +387,7 @@ static void sd_set_csd(SDState *sd, uint64_t size)
     uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1;
     uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1;
 
-    if (size <= 1 * GiB) { /* Standard Capacity SD */
+    if (size <= SDSC_MAX_CAPACITY) { /* Standard Capacity SD */
         sd->csd[0] = 0x00;     /* CSD structure */
         sd->csd[1] = 0x26;     /* Data read access-time-1 */
         sd->csd[2] = 0x00;     /* Data read access-time-2 */
-- 
2.7.4