[PATCH v2] mmc: mmc_boot: support sandisk and micron emmc boot/rpmb partition resizing
ziniu.wang_1 at nxp.com
ziniu.wang_1 at nxp.com
Mon Mar 17 09:46:49 CET 2025
From: Luke Wang <ziniu.wang_1 at nxp.com>
Current mmc bootpart-resize cmd only support samsung emmc boot/rpmb
partition resizing. Add sandisk and micron emmc boot/rpmb partition
resizing support. The commands and parameters for resizing partitions
are different for each manufacturer. Select the corresponding function
according to cid.
Signed-off-by: Luke Wang <ziniu.wang_1 at nxp.com>
---
Changed in v2:
- define some macros according to Tom's comment
- correct emmc manufacturer id
---
drivers/mmc/mmc_boot.c | 173 ++++++++++++++++++++++++++++++++++-------
include/mmc.h | 6 ++
2 files changed, 150 insertions(+), 29 deletions(-)
diff --git a/drivers/mmc/mmc_boot.c b/drivers/mmc/mmc_boot.c
index 367c957b518..ba6261a8ffe 100644
--- a/drivers/mmc/mmc_boot.c
+++ b/drivers/mmc/mmc_boot.c
@@ -8,20 +8,107 @@
#include <mmc.h>
#include "mmc_private.h"
-/*
- * This function changes the size of boot partition and the size of rpmb
- * partition present on EMMC devices.
- *
- * Input Parameters:
- * struct *mmc: pointer for the mmc device strcuture
- * bootsize: size of boot partition
- * rpmbsize: size of rpmb partition
- *
- * Returns 0 on success.
- */
+static int mmc_resize_boot_micron(struct mmc *mmc, unsigned long bootsize,
+ unsigned long rpmbsize)
+{
+ int err;
-int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
- unsigned long rpmbsize)
+ /* micron emmc doesn't support resizing rpmb partition */
+ (void)rpmbsize;
+
+ /* boot partition size is multiple of 128KB */
+ bootsize = (bootsize * 1024) / 128;
+
+ if (bootsize > 0xff)
+ bootsize = 0xff;
+
+ /* Set EXT_CSD[175] ERASE_GROUP_DEF to 0x01 */
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_ERASE_GROUP_DEF, 0x01);
+ if (err)
+ goto error;
+
+ /* Set EXT_CSD[127:125] for boot partition size, [125] is low byte */
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BOOT_SIZE_MULT_MICRON, bootsize);
+ if (err)
+ goto error;
+
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BOOT_SIZE_MULT_MICRON + 1, 0x00);
+ if (err)
+ goto error;
+
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BOOT_SIZE_MULT_MICRON + 2, 0x00);
+ if (err)
+ goto error;
+
+ /* Set EXT_CSD[155] PARTITION_SETTING_COMPLETE to 0x01 */
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_PARTITION_SETTING, 0x01);
+ if (err)
+ goto error;
+
+ return 0;
+
+error:
+ debug("%s: Error = %d\n", __func__, err);
+ return err;
+}
+
+static int mmc_resize_boot_sandisk(struct mmc *mmc, unsigned long bootsize,
+ unsigned long rpmbsize)
+{
+ int err;
+ struct mmc_cmd cmd;
+
+ /* boot/rpmb partition size is multiple of 128KB */
+ bootsize = (bootsize * 1024) / 128;
+ rpmbsize = (rpmbsize * 1024) / 128;
+
+ if (bootsize > 0xff)
+ bootsize = 0xff;
+
+ if (rpmbsize > 0xff)
+ rpmbsize = 0xff;
+
+ /* Send boot/rpmb resize op code */
+ cmd.cmdidx = MMC_CMD_RES_MAN;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.cmdarg = MMC_CMD62_ARG_SANDISK;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (err)
+ goto error;
+
+ /* Arg: boot partition size */
+ cmd.cmdidx = MMC_CMD_RES_MAN;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.cmdarg = bootsize;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (err)
+ goto error;
+
+ /* Arg: RPMB partition size */
+ cmd.cmdidx = MMC_CMD_RES_MAN;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.cmdarg = rpmbsize;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (err)
+ goto error;
+
+ return 0;
+
+error:
+ debug("%s: Error = %d\n", __func__, err);
+ return err;
+}
+
+static int mmc_resize_boot_samsung(struct mmc *mmc, unsigned long bootsize,
+ unsigned long rpmbsize)
{
int err;
struct mmc_cmd cmd;
@@ -32,10 +119,8 @@ int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
cmd.cmdarg = MMC_CMD62_ARG1;
err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err) {
- debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
- return err;
- }
+ if (err)
+ goto error;
/* Boot partition changing mode */
cmd.cmdidx = MMC_CMD_RES_MAN;
@@ -43,10 +128,9 @@ int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
cmd.cmdarg = MMC_CMD62_ARG2;
err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err) {
- debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
- return err;
- }
+ if (err)
+ goto error;
+
/* boot partition size is multiple of 128KB */
bootsize = (bootsize * 1024) / 128;
@@ -56,10 +140,9 @@ int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
cmd.cmdarg = bootsize;
err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err) {
- debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
- return err;
- }
+ if (err)
+ goto error;
+
/* RPMB partition size is multiple of 128KB */
rpmbsize = (rpmbsize * 1024) / 128;
/* Arg: RPMB partition size */
@@ -68,11 +151,43 @@ int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
cmd.cmdarg = rpmbsize;
err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err) {
- debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
- return err;
- }
+ if (err)
+ goto error;
+
return 0;
+
+error:
+ debug("%s: Error = %d\n", __func__, err);
+ return err;
+}
+
+/*
+ * This function changes the size of boot partition and the size of rpmb
+ * partition present on EMMC devices.
+ *
+ * Input Parameters:
+ * struct *mmc: pointer for the mmc device strcuture
+ * bootsize: size of boot partition
+ * rpmbsize: size of rpmb partition
+ *
+ * Returns 0 on success.
+ */
+
+int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
+ unsigned long rpmbsize)
+{
+ switch (mmc->cid[0] >> 24) {
+ case CID_MANFID_MICRON:
+ return mmc_resize_boot_micron(mmc, bootsize, rpmbsize);
+ case CID_MANFID_SAMSUNG:
+ return mmc_resize_boot_samsung(mmc, bootsize, rpmbsize);
+ case CID_MANFID_SANDISK:
+ return mmc_resize_boot_sandisk(mmc, bootsize, rpmbsize);
+ default:
+ printf("Unsupported manufacturer id 0x%02x\n",
+ mmc->cid[0] >> 24);
+ return -EPERM;
+ }
}
/*
diff --git a/include/mmc.h b/include/mmc.h
index 81bccb4cf12..11e95e7a716 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -79,6 +79,10 @@ struct bd_info;
#define IS_SD(x) ((x)->version & SD_VERSION_SD)
#define IS_MMC(x) ((x)->version & MMC_VERSION_MMC)
+#define CID_MANFID_MICRON 0x13
+#define CID_MANFID_SAMSUNG 0x15
+#define CID_MANFID_SANDISK 0x45
+
#define MMC_DATA_READ 1
#define MMC_DATA_WRITE 2
@@ -112,6 +116,7 @@ struct bd_info;
#define MMC_CMD62_ARG1 0xefac62ec
#define MMC_CMD62_ARG2 0xcbaea7
+#define MMC_CMD62_ARG_SANDISK 0x254ddec4
#define SD_CMD_SEND_RELATIVE_ADDR 3
#define SD_CMD_SWITCH_FUNC 6
@@ -205,6 +210,7 @@ static inline bool mmc_is_tuning_cmd(uint cmdidx)
/*
* EXT_CSD fields
*/
+#define EXT_CSD_BOOT_SIZE_MULT_MICRON 125 /* R/W, vendor specific field */
#define EXT_CSD_ENH_START_ADDR 136 /* R/W */
#define EXT_CSD_ENH_SIZE_MULT 140 /* R/W */
#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
--
2.34.1
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