Hi Jaehoon, Yes, the functions mmc_boot_partiton_size_change(), mmc_boot_open() & mmc_boot_close() can be used by any vendor to open/close/resize-boot-partition of emmc device. The above 3 functions call the static function "static int mmc_send_cmd(...)" located in drivers/mmc/mmc.c. Any vendor can use the above 3 functions, if placed in drivers/mmc/mmc.c.
Thanks & Regards Amarendra Reddy On 4 January 2013 15:57, Jaehoon Chung <jh80.ch...@samsung.com> wrote: > 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 >
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