So far the eMMC boot partitions cannot be partitioned from the device tree. Since they are often 4MiB in size they are big enough to hold a barebox image and the environment. Add partition parsing to the boot partitions to allow this usecase.
Signed-off-by: Sascha Hauer <[email protected]> --- drivers/mci/mci-core.c | 78 +++++++++++++++++++++++++++++++++++--------------- include/mci.h | 1 + 2 files changed, 56 insertions(+), 23 deletions(-) diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c index 4e176f7b3..055a5e2b0 100644 --- a/drivers/mci/mci-core.c +++ b/drivers/mci/mci-core.c @@ -436,6 +436,7 @@ static void mci_part_add(struct mci *mci, uint64_t size, part->blk.num_blocks = mci_calc_blk_cnt(size, part->blk.blockbits); part->area_type = area_type; part->part_cfg = part_cfg; + part->idx = idx; if (area_type == MMC_BLK_DATA_AREA_MAIN) part->blk.cdev.device_node = mci->host->hw_dev->device_node; @@ -1573,6 +1574,59 @@ static const char *mci_boot_names[] = { "user", }; +static int mci_register_partition(struct mci_part *part) +{ + struct mci *mci = part->mci; + struct mci_host *host = mci->host; + const char *partnodename = NULL; + struct device_node *np; + int rc; + + /* + * An MMC/SD card acts like an ordinary disk. + * So, re-use the disk driver to gain access to this media + */ + part->blk.dev = &mci->dev; + part->blk.ops = &mci_ops; + + rc = blockdevice_register(&part->blk); + if (rc != 0) { + dev_err(&mci->dev, "Failed to register MCI/SD blockdevice\n"); + return rc; + } + dev_info(&mci->dev, "registered %s\n", part->blk.cdev.name); + + np = host->hw_dev->device_node; + + /* create partitions on demand */ + switch (part->area_type) { + case MMC_BLK_DATA_AREA_BOOT: + if (part->idx == 0) + partnodename = "boot0-partitions"; + else + partnodename = "boot1-partitions"; + + np = of_get_child_by_name(host->hw_dev->device_node, + partnodename); + break; + case MMC_BLK_DATA_AREA_MAIN: + break; + default: + return 0; + } + + rc = parse_partition_table(&part->blk); + if (rc != 0) { + dev_warn(&mci->dev, "No partition table found\n"); + rc = 0; /* it's not a failure */ + } + + if (np) + of_parse_partitions(&part->blk.cdev, np); + + return 0; +} + /** * Probe an MCI card at the given host interface * @param mci MCI device instance @@ -1647,29 +1701,7 @@ static int mci_card_probe(struct mci *mci) for (i = 0; i < mci->nr_parts; i++) { struct mci_part *part = &mci->part[i]; - /* - * An MMC/SD card acts like an ordinary disk. - * So, re-use the disk driver to gain access to this media - */ - part->blk.dev = &mci->dev; - part->blk.ops = &mci_ops; - - rc = blockdevice_register(&part->blk); - if (rc != 0) { - dev_err(&mci->dev, "Failed to register MCI/SD blockdevice\n"); - goto on_error; - } - dev_info(&mci->dev, "registered %s\n", part->blk.cdev.name); - - /* create partitions on demand */ - if (part->area_type == MMC_BLK_DATA_AREA_MAIN) { - rc = parse_partition_table(&part->blk); - if (rc != 0) { - dev_warn(&mci->dev, "No partition table found\n"); - rc = 0; /* it's not a failure */ - } - of_parse_partitions(&part->blk.cdev, host->hw_dev->device_node); - } + rc = mci_register_partition(part); if (IS_ENABLED(CONFIG_MCI_MMC_BOOT_PARTITIONS) && part->area_type == MMC_BLK_DATA_AREA_BOOT && diff --git a/include/mci.h b/include/mci.h index 0370547b0..cc4712cfa 100644 --- a/include/mci.h +++ b/include/mci.h @@ -433,6 +433,7 @@ struct mci_part { uint64_t size; /* partition size (in bytes) */ unsigned int part_cfg; /* partition type */ char *name; + int idx; unsigned int area_type; #define MMC_BLK_DATA_AREA_MAIN (1<<0) #define MMC_BLK_DATA_AREA_BOOT (1<<1) -- 2.11.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
