[PATCH v47 12/19] hw/sd/sdcard: Simplify EXT_CSD values for spec v4.3

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

- Set some keys to not defined / implemented:
  . EXT_CSD_HPI_FEATURES
  . EXT_CSD_BKOPS_SUPPORT
  . EXT_CSD_SEC_FEATURE_SUPPORT
  . EXT_CSD_ERASE_TIMEOUT_MULT
  . EXT_CSD_PART_SWITCH_TIME
  . EXT_CSD_OUT_OF_INTERRUPT_TIME

- Simplify:
  . EXT_CSD_ACC_SIZE (6 -> 1)
      16KB of super_page_size -> 512B (BDRV_SECTOR_SIZE)
  . EXT_CSD_HC_ERASE_GRP_SIZE (4 -> 1)
  . EXT_CSD_HC_WP_GRP_SIZE (4 -> 1)
  . EXT_CSD_S_C_VCC[Q] (8 -> 1)
  . EXT_CSD_S_A_TIMEOUT (17 -> 1)
  . EXT_CSD_CARD_TYPE (7 -> 3)
      Dual data rate -> High-Speed mode

- Update:
  . EXT_CSD_CARD_TYPE (7 -> 3)
      High-Speed MultiMediaCard @ 26MHz & 52MHz
  . Performances (0xa -> 0x46)
      Class B at 3MB/s. -> Class J at 21MB/s
  . EXT_CSD_REV (5 -> 3)
      Rev 1.5 (spec v4.41) -> Rev 1.3 (spec v4.3)

- Use load/store API to set EXT_CSD_SEC_CNT

- Remove R/W keys, normally zeroed at reset
  . EXT_CSD_BOOT_INFO

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/sd/sd.c | 50 ++++++++++++++++++--------------------------------
 1 file changed, 18 insertions(+), 32 deletions(-)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index df0e2345c0..2a687977d1 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -484,43 +484,29 @@ static void mmc_set_ext_csd(SDState *sd, uint64_t size)
 
     memset(sd->ext_csd, 0, sizeof(sd->ext_csd));
 
+    /* Properties segment (RO) */
     sd->ext_csd[EXT_CSD_S_CMD_SET] = 0b1; /* supported command sets */
-    sd->ext_csd[EXT_CSD_HPI_FEATURES] = 0x3; /* HPI features  */
-    sd->ext_csd[EXT_CSD_BKOPS_SUPPORT] = 0x1; /* Background operations */
-    sd->ext_csd[241] = 0xA; /* 1st initialization time after partitioning */
-    sd->ext_csd[EXT_CSD_TRIM_MULT] = 0x1; /* Trim multiplier */
-    sd->ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT] = 0x15; /* Secure feature */
-    sd->ext_csd[EXT_CSD_BOOT_INFO] = 0x7; /* Boot information */
+    sd->ext_csd[EXT_CSD_BOOT_INFO] = 0x0; /* Boot information */
                                      /* Boot partition size. 128KB unit */
     sd->ext_csd[EXT_CSD_BOOT_MULT] = sd->boot_part_size / (128 * KiB);
-    sd->ext_csd[EXT_CSD_ACC_SIZE] = 0x6; /* Access size */
-    sd->ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] = 0x4; /* HC Erase unit size */
+    sd->ext_csd[EXT_CSD_ACC_SIZE] = 0x1; /* Access size */
+    sd->ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] = 0x01; /* HC Erase unit size */
     sd->ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT] = 0x01; /* HC erase timeout */
     sd->ext_csd[EXT_CSD_REL_WR_SEC_C] = 0x1; /* Reliable write sector count */
-    sd->ext_csd[EXT_CSD_HC_WP_GRP_SIZE] = 0x4; /* HC write protect group size */
-    sd->ext_csd[EXT_CSD_S_C_VCC] = 0x8; /* Sleep current VCC  */
-    sd->ext_csd[EXT_CSD_S_C_VCCQ] = 0x7; /* Sleep current VCCQ */
-    sd->ext_csd[EXT_CSD_S_A_TIMEOUT] = 0x11; /* Sleep/Awake timeout */
-    sd->ext_csd[215] = (sectcount >> 24) & 0xff; /* Sector count */
-    sd->ext_csd[214] = (sectcount >> 16) & 0xff; /* ... */
-    sd->ext_csd[213] = (sectcount >> 8) & 0xff;  /* ... */
-    sd->ext_csd[EXT_CSD_SEC_CNT] = (sectcount & 0xff);       /* ... */
-    sd->ext_csd[210] = 0xa; /* Min write perf for 8bit@52Mhz */
-    sd->ext_csd[209] = 0xa; /* Min read perf for 8bit@52Mhz  */
-    sd->ext_csd[208] = 0xa; /* Min write perf for 4bit@52Mhz */
-    sd->ext_csd[207] = 0xa; /* Min read perf for 4bit@52Mhz */
-    sd->ext_csd[206] = 0xa; /* Min write perf for 4bit@26Mhz */
-    sd->ext_csd[205] = 0xa; /* Min read perf for 4bit@26Mhz */
-    sd->ext_csd[EXT_CSD_PART_SWITCH_TIME] = 0x1;
-    sd->ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] = 0x1;
-    sd->ext_csd[EXT_CSD_CARD_TYPE] = 0x7;
-    sd->ext_csd[EXT_CSD_STRUCTURE] = 0x2;
-    sd->ext_csd[EXT_CSD_REV] = 0x5;
-    sd->ext_csd[EXT_CSD_RPMB_MULT] = 0x1; /* RPMB size */
-    sd->ext_csd[EXT_CSD_PARTITION_SUPPORT] = 0x3;
-    sd->ext_csd[159] = 0x00; /* Max enhanced area size */
-    sd->ext_csd[158] = 0x00; /* ... */
-    sd->ext_csd[157] = 0xEC; /* ... */
+    sd->ext_csd[EXT_CSD_HC_WP_GRP_SIZE] = 0x01; /* HC write protect group size */
+    sd->ext_csd[EXT_CSD_S_C_VCC] = 0x01; /* Sleep current VCC  */
+    sd->ext_csd[EXT_CSD_S_C_VCCQ] = 0x01; /* Sleep current VCCQ */
+    sd->ext_csd[EXT_CSD_S_A_TIMEOUT] = 0x01; /* Sleep/Awake timeout */
+    stl_le_p(&sd->ext_csd[EXT_CSD_SEC_CNT], sectcount); /* Sector count */
+    sd->ext_csd[210] = 0x46; /* Min write perf for 8bit@52Mhz */
+    sd->ext_csd[209] = 0x46; /* Min read perf for 8bit@52Mhz  */
+    sd->ext_csd[208] = 0x46; /* Min write perf for 4bit@52Mhz */
+    sd->ext_csd[207] = 0x46; /* Min read perf for 4bit@52Mhz */
+    sd->ext_csd[206] = 0x46; /* Min write perf for 4bit@26Mhz */
+    sd->ext_csd[205] = 0x46; /* Min read perf for 4bit@26Mhz */
+    sd->ext_csd[EXT_CSD_CARD_TYPE] = 0b11;
+    sd->ext_csd[EXT_CSD_STRUCTURE] = 2;
+    sd->ext_csd[EXT_CSD_REV] = 3;
 }
 
 static void emmc_set_csd(SDState *sd, uint64_t size)
-- 
2.41.0