diff options
| -rw-r--r-- | drivers/mmc/mmc.c | 134 | ||||
| -rw-r--r-- | include/mmc.h | 26 |
2 files changed, 160 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 2590f1b..9c0652d 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1374,3 +1374,137 @@ int mmc_initialize(bd_t *bis) return 0; } + +#ifdef CONFIG_SUPPORT_EMMC_BOOT +/* + * 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) +{ + int err; + struct mmc_cmd cmd; + + /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */ + cmd.cmdidx = MMC_CMD_RES_MAN; + cmd.resp_type = MMC_RSP_R1b; + 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; + } + + /* Boot partition changing mode */ + cmd.cmdidx = MMC_CMD_RES_MAN; + cmd.resp_type = MMC_RSP_R1b; + 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; + } + /* boot partition size is multiple of 128KB */ + bootsize = (bootsize * 1024) / 128; + + /* 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) { + debug("mmc_boot_partition_size_change: Error3 = %d\n", err); + return err; + } + /* RPMB partition size is multiple of 128KB */ + rpmbsize = (rpmbsize * 1024) / 128; + /* 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) { + debug("mmc_boot_partition_size_change: Error4 = %d\n", err); + return err; + } + return 0; +} + +/* + * This function shall form and send the commands to open / close the + * boot partition specified by user. + * + * Input Parameters: + * ack: 0x0 - No boot acknowledge sent (default) + * 0x1 - Boot acknowledge sent during boot operation + * part_num: User selects boot data that will be sent to master + * 0x0 - Device not boot enabled (default) + * 0x1 - Boot partition 1 enabled for boot + * 0x2 - Boot partition 2 enabled for boot + * access: User selects partitions to access + * 0x0 : No access to boot partition (default) + * 0x1 : R/W boot partition 1 + * 0x2 : R/W boot partition 2 + * 0x3 : R/W Replay Protected Memory Block (RPMB) + * + * Returns 0 on success. + */ +int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access) +{ + int err; + struct mmc_cmd cmd; + + /* Boot ack enable, boot partition enable , boot partition access */ + cmd.cmdidx = MMC_CMD_SWITCH; + cmd.resp_type = MMC_RSP_R1b; + + cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | + (EXT_CSD_PART_CONF << 16) | + ((EXT_CSD_BOOT_ACK(ack) | + EXT_CSD_BOOT_PART_NUM(part_num) | + EXT_CSD_PARTITION_ACCESS(access)) << 8); + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) { + if (access) { + debug("mmc boot partition#%d open fail:Error1 = %d\n", + part_num, err); + } else { + debug("mmc boot partition#%d close fail:Error = %d\n", + part_num, err); + } + return err; + } + + if (access) { + /* 4bit transfer mode at booting time. */ + cmd.cmdidx = MMC_CMD_SWITCH; + cmd.resp_type = MMC_RSP_R1b; + + cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | + (EXT_CSD_BOOT_BUS_WIDTH << 16) | + ((1 << 0) << 8); + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) { + debug("mmc boot partition#%d open fail:Error2 = %d\n", + part_num, err); + return err; + } + } + return 0; +} +#endif diff --git a/include/mmc.h b/include/mmc.h index 8bbc6b6..21d0937 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -92,6 +92,11 @@ #define MMC_CMD_APP_CMD 55 #define MMC_CMD_SPI_READ_OCR 58 #define MMC_CMD_SPI_CRC_ON_OFF 59 +#define MMC_CMD_RES_MAN 62 + +#define MMC_CMD62_ARG1 0xefac62ec +#define MMC_CMD62_ARG2 0xcbaea7 + #define SD_CMD_SEND_RELATIVE_ADDR 3 #define SD_CMD_SWITCH_FUNC 6 @@ -159,6 +164,7 @@ */ #define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ +#define EXT_CSD_BOOT_BUS_WIDTH 177 #define EXT_CSD_PART_CONF 179 /* R/W */ #define EXT_CSD_BUS_WIDTH 183 /* R/W */ #define EXT_CSD_HS_TIMING 185 /* R/W */ @@ -183,6 +189,16 @@ #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */ #define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */ +#define EXT_CSD_BOOT_ACK_ENABLE (1 << 6) +#define EXT_CSD_BOOT_PARTITION_ENABLE (1 << 3) +#define EXT_CSD_PARTITION_ACCESS_ENABLE (1 << 0) +#define EXT_CSD_PARTITION_ACCESS_DISABLE (0 << 0) + +#define EXT_CSD_BOOT_ACK(x) (x << 6) +#define EXT_CSD_BOOT_PART_NUM(x) (x << 3) +#define EXT_CSD_PARTITION_ACCESS(x) (x << 0) + + #define R1_ILLEGAL_COMMAND (1 << 22) #define R1_APP_CMD (1 << 5) @@ -210,6 +226,11 @@ /* Maximum block size for MMC */ #define MMC_MAX_BLOCK_LEN 512 +/* The number of MMC physical partitions. These consist of: + * boot partitions (2), general purpose partitions (4) in MMC v4.4. + */ +#define MMC_NUM_BOOT_PARTITION 2 + struct mmc_cid { unsigned long psn; unsigned short oid; @@ -286,6 +307,11 @@ int mmc_switch_part(int dev_num, unsigned int part_num); int mmc_getcd(struct mmc *mmc); int mmc_getwp(struct mmc *mmc); void spl_mmc_load(void) __noreturn; +/* Function to change the size of boot partition and rpmb partitions */ +int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, + unsigned long rpmbsize); +/* Function to send commands to open/close the specified boot partition */ +int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access); #ifdef CONFIG_GENERIC_MMC #define mmc_host_is_spi(mmc) ((mmc)->host_caps & MMC_MODE_SPI) |