From 1d4b3b2fcb8584a531626684782778cd792f072f Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 17 Jan 2022 22:54:29 +0100 Subject: [PATCH] cmd: mmc: Consider GP partitions in mmc hwpartition user enh start - In case the eMMC contains any GP partitions or user sets up new GP partitions, the size of these GP partitions reduce the size of the USER partition. Subtract the size of those GP partitions from the calculated size of USER partition when using `user enh start -`. The following test used to fail before: ``` u-boot=> mmc hwpartition gp1 524288 enh user enh 0 - wrrel on check Partition configuration: User Enhanced Start: 0 Bytes User Enhanced Size: 1.8 GiB User partition write reliability: on GP1 Capacity: 256 MiB ENH No GP2 partition No GP3 partition No GP4 partition Total enhanced size exceeds maximum (261 > 229) Failed! ``` The test now passes: ``` u-boot=> mmc hwpartition gp1 524288 enh user enh 0 - wrrel on check Partition configuration: User Enhanced Start: 0 Bytes User Enhanced Size: 1.5 GiB User partition write reliability: on GP1 Capacity: 256 MiB ENH No GP2 partition No GP3 partition No GP4 partition ``` Signed-off-by: Marek Vasut Cc: Fabio Estevam Cc: Jaehoon Chung Cc: Peng Fan Cc: Stefano Babic Reviewed-by: Fabio Estevam Reviewed-by: Jaehoon Chung --- cmd/mmc.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/cmd/mmc.c b/cmd/mmc.c index 96d81ff..503dbb6 100644 --- a/cmd/mmc.c +++ b/cmd/mmc.c @@ -597,7 +597,7 @@ static void parse_hwpart_user_enh_size(struct mmc *mmc, struct mmc_hwpart_conf *pconf, char *argv) { - int ret; + int i, ret; pconf->user.enh_size = 0; @@ -606,7 +606,7 @@ static void parse_hwpart_user_enh_size(struct mmc *mmc, ret = mmc_send_ext_csd(mmc, ext_csd); if (ret) return; - /* This value is in 512B block units */ + /* The enh_size value is in 512B block units */ pconf->user.enh_size = ((ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT + 2] << 16) + (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT + 1] << 8) + @@ -614,6 +614,24 @@ static void parse_hwpart_user_enh_size(struct mmc *mmc, ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; pconf->user.enh_size -= pconf->user.enh_start; + for (i = 0; i < ARRAY_SIZE(mmc->capacity_gp); i++) { + /* + * If the eMMC already has GP partitions set, + * subtract their size from the maximum USER + * partition size. + * + * Else, if the command was used to configure new + * GP partitions, subtract their size from maximum + * USER partition size. + */ + if (mmc->capacity_gp[i]) { + /* The capacity_gp is in 1B units */ + pconf->user.enh_size -= mmc->capacity_gp[i] >> 9; + } else if (pconf->gp_part[i].size) { + /* The gp_part[].size is in 512B units */ + pconf->user.enh_size -= pconf->gp_part[i].size; + } + } } else { pconf->user.enh_size = dectoul(argv, NULL); } -- 2.7.4