Hi Amar, I wonder that include the moviNAND specific code in mmc.c? mmc_boot_partiton_size_change() looks like every vendor can use this function.
Best Regards, Jaehoon Chung On 01/04/2013 06:34 PM, Amar wrote: > This patch adds APIs to open, close and to resize boot partiton for EMMC. > > Changes from V1: > New patch. > > Changes from V2: > 1)Updation of commit message and resubmition of proper patch set. > > Changes from V3: > No change. > > Signed-off-by: Amar <amarendra...@samsung.com> > --- > drivers/mmc/mmc.c | 118 > ++++++++++++++++++++++++++++++++++++++++++++++++++++++ > include/mmc.h | 16 ++++++++ > 2 files changed, 134 insertions(+) > > diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c > index 72e8ce6..8175b49 100644 > --- a/drivers/mmc/mmc.c > +++ b/drivers/mmc/mmc.c > @@ -1327,3 +1327,121 @@ int mmc_initialize(bd_t *bis) > > return 0; > } > + > +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; > +} > + > +int mmc_boot_open(struct mmc *mmc) > +{ > + 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_ENABLE | > + EXT_CSD_BOOT_PARTITION_ENABLE | > + EXT_CSD_PARTITION_ACCESS_ENABLE) << 8); > + > + err = mmc_send_cmd(mmc, &cmd, NULL); > + if (err) { > + debug("mmc_boot_open: Error1 = %d\n", err); > + return err; > + } > + > + /* 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_open: Error2 = %d\n", err); > + return err; > + } > + > + return 0; > +} > + > +int mmc_boot_close(struct mmc *mmc) > +{ > + 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_ENABLE | > + EXT_CSD_BOOT_PARTITION_ENABLE | > + EXT_CSD_PARTITION_ACCESS_DISABLE) << 8); > + > + err = mmc_send_cmd(mmc, &cmd, NULL); > + if (err) { > + debug("mmc_boot_close: Error = %d\n", err); > + return err; > + } > + > + return 0; > +} > diff --git a/include/mmc.h b/include/mmc.h > index a13e2bd..999f0a3 100644 > --- a/include/mmc.h > +++ b/include/mmc.h > @@ -86,6 +86,11 @@ > #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 > @@ -153,6 +158,7 @@ > */ > #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 */ > @@ -177,6 +183,12 @@ > #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 R1_ILLEGAL_COMMAND (1 << 22) > #define R1_APP_CMD (1 << 5) > > @@ -275,6 +287,10 @@ int board_mmc_getcd(struct mmc *mmc); > int mmc_switch_part(int dev_num, unsigned int part_num); > int mmc_getcd(struct mmc *mmc); > void spl_mmc_load(void) __noreturn; > +int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize, > + unsigned long rpmbsize); > +int mmc_boot_open(struct mmc *mmc); > +int mmc_boot_close(struct mmc *mmc); > > #ifdef CONFIG_GENERIC_MMC > #define mmc_host_is_spi(mmc) ((mmc)->host_caps & MMC_MODE_SPI) > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot