Hi Eric and Fabio, On 12/07/2015 03:50 PM, Eric Nelson wrote: > Table 41 of the JEDEC standard for eMMC says that bit 31 of > the command argument is obsolete when issuing the ERASE > command (CMD38) on page 115 of this document: > http://www.jedec.org/sites/default/files/docs/jesd84-B45.pdf > > The SD Card Association Physical Layer Simplified Specification also > makes no mention of the use of bit 31. > https://www.sdcard.org/downloads/pls/part1_410.pdf > > The Linux kernel distinguishes between secure (bit 31 set) and > non-secure erase, and this patch copies the macro names from > include/linux/mmc/core.h. > > Tested-by: Fabio Estevam <fabio.este...@freescale.com> > Signed-off-by: Eric Nelson <e...@nelint.com> > --- > drivers/mmc/mmc_write.c | 2 +- > include/mmc.h | 7 ++++++- > 2 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/mmc_write.c b/drivers/mmc/mmc_write.c > index 7aea7e9..221bf30 100644 > --- a/drivers/mmc/mmc_write.c > +++ b/drivers/mmc/mmc_write.c > @@ -51,7 +51,7 @@ static ulong mmc_erase_t(struct mmc *mmc, ulong start, > lbaint_t blkcnt) > goto err_out; > > cmd.cmdidx = MMC_CMD_ERASE; > - cmd.cmdarg = SECURE_ERASE; > + cmd.cmdarg = MMC_ERASE_ARG; > cmd.resp_type = MMC_RSP_R1b; > > err = mmc_send_cmd(mmc, &cmd, NULL); > diff --git a/include/mmc.h b/include/mmc.h > index cda9a19..b89962a 100644 > --- a/include/mmc.h > +++ b/include/mmc.h > @@ -121,7 +121,12 @@ > #define OCR_VOLTAGE_MASK 0x007FFF80 > #define OCR_ACCESS_MODE 0x60000000 > > -#define SECURE_ERASE 0x80000000 > +#define MMC_ERASE_ARG 0x00000000 > +#define MMC_SECURE_ERASE_ARG 0x80000000 > +#define MMC_TRIM_ARG 0x00000001 > +#define MMC_DISCARD_ARG 0x00000003 > +#define MMC_SECURE_TRIM1_ARG 0x80000001 > +#define MMC_SECURE_TRIM2_ARG 0x80008000 > > #define MMC_STATUS_MASK (~0x0206BF7F) > #define MMC_STATUS_SWITCH_ERROR (1 << 7) >
This fixes the issue on eMMC. Very good job! Thank you. Tested-by: Hector Palacios <hector.palac...@digi.com> On the uSD card, it occasionally works (when it didn't before), but it still fails many times, after erasing a random number of blocks (at random times). I guess this must be a different issue, though. I could reproduce it on my board (4 data lines) and on the SabreSD (8 data lines) with v2015.04. Here is an output from the SabreSD: => time mmc erase 200000 100 MMC erase: dev # 1, block # 2097152, count 256 ... 256 blocks erased: OK time: 1.866 seconds => time mmc erase 200000 1000 MMC erase: dev # 1, block # 2097152, count 4096 ... Timeout waiting for DAT0 to go high! mmc erase failed 1409 blocks erased: ERROR time: 11.263 seconds => time mmc erase 200000 10000 MMC erase: dev # 1, block # 2097152, count 65536 ... Timeout waiting for DAT0 to go high! mmc erase failed 8192 blocks erased: ERROR time: 59.139 seconds Thank you -- Hector Palacios _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
