emmc: build fake bootloader0 & bootloader1 [1/1]

PD#SWPL-52307

Problem:
need bootloader0 & bootloader1 offset from 1 sector

Solution:
add fake partition

Verify:
passed on t3_t982

Signed-off-by: Ruixuan Li <ruixuan.li@amlogic.com>
Change-Id: Iddac88632af72fb9251a19c4941efc9a29cd6b59

diff --git a/drivers/amlogic/mmc/emmc_partitions.c b/drivers/amlogic/mmc/emmc_partitions.c
index ead579f276d4f7c850b5cc8eee8a8f8779f50e3f..f1c74c66229f0d37a46c5522b35f4a7b9393ff1e 100644 (file)
--- a/drivers/amlogic/mmc/emmc_partitions.c
+++ b/drivers/amlogic/mmc/emmc_partitions.c
@@ -1342,6 +1342,31 @@ __ATTR(bl_off_bytes, 0444, get_bootloader_offset, NULL);
  *     __ATTR(cdirq_cnt, S_IRUGO, get_cdirq_cnt, NULL);
  */
 
+int add_fake_boot_partition(struct gendisk *disk, char *name, int idx)
+{
+       u64 boot_size = (u64)get_capacity(disk) - 1;
+       char fake_name[80];
+       int offset = 1;
+       struct hd_struct *ret = NULL;
+       struct disk_part_iter piter;
+       struct hd_struct *part;
+
+       sprintf(fake_name, name, idx);
+       ret = add_emmc_each_part(disk, 1 + idx,
+                       offset, boot_size, 0, fake_name);
+       if (IS_ERR(ret))
+               pr_info("%s added failed\n", fake_name);
+
+       disk_part_iter_init(&piter, disk, 0);
+       while ((part = disk_part_iter_next(&piter))) {
+               dev_set_uevent_suppress(part_to_dev(part), 0);
+               kobject_uevent(&part_to_dev(part)->kobj, KOBJ_ADD);
+       }
+       disk_part_iter_exit(&piter);
+
+       return 0;
+}
+
 int aml_emmc_partition_ops(struct mmc_card *card, struct gendisk *disk)
 {
        int ret = 0;

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 7774489d89abd44ea16f281e48d96f11cfd964f5..a64e30a06eb1bd52e359359c2733b8f4b85792b3 100644 (file)
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -3021,6 +3021,9 @@ static int mmc_blk_probe(struct mmc_card *card)
 {
        struct mmc_blk_data *md, *part_md;
        char cap_str[10];
+#ifdef CONFIG_AMLOGIC_MMC
+       int idx = 0;
+#endif
 
        /*
         * Check that the card supports the command class(es) we need.
@@ -3056,6 +3059,11 @@ static int mmc_blk_probe(struct mmc_card *card)
        list_for_each_entry(part_md, &md->part, part) {
                if (mmc_add_disk(part_md))
                        goto out;
+#ifdef CONFIG_AMLOGIC_MMC
+               if (part_md->area_type == MMC_BLK_DATA_AREA_BOOT)
+                       add_fake_boot_partition(part_md->disk,
+                                       "bootloader%d", idx++);
+#endif
        }
 
        pm_runtime_set_autosuspend_delay(&card->dev, 3000);

diff --git a/include/linux/mmc/emmc_partitions.h b/include/linux/mmc/emmc_partitions.h
index 6cd4e6ac0b24182d72e724ca6b4544034a854c37..441a8d02d12b948c576cdd106b789fdfa6844379 100644 (file)
--- a/include/linux/mmc/emmc_partitions.h
+++ b/include/linux/mmc/emmc_partitions.h
@@ -67,6 +67,7 @@ struct mmc_partitions_fmt {
 };
 /*#ifdef CONFIG_MMC_AML*/
 int aml_emmc_partition_ops(struct mmc_card *card, struct gendisk *disk);
+int add_fake_boot_partition(struct gendisk *disk, char *name, int idx);
 /*
  *#else
  *static inline int aml_emmc_partition_ops(struct mmc_card *card,