cmd: gpt: add - partition size parsing

This patch try to parse name=userdata,size=-,uuid=${uuid_gpt_userdata};

gpt mmc write 0 $partitions
gpt mmc verify 0 $partitions

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/cmd/gpt.c b/cmd/gpt.c
index 8ffaef30f568bd807669b93090eb8b3a802aa891..3d9706b679c5c2ff8f6a2b2ce2fd0546c08b6470 100644 (file)
--- a/cmd/gpt.c
+++ b/cmd/gpt.c
@@ -181,6 +181,7 @@ static int set_gpt_info(struct blk_desc *dev_desc,
        disk_partition_t *parts;
        int errno = 0;
        uint64_t size_ll, start_ll;
+       lbaint_t offset = 0;
 
        debug("%s:  lba num: 0x%x %d\n", __func__,
              (unsigned int)dev_desc->lba, (unsigned int)dev_desc->lba);
@@ -296,8 +297,14 @@ static int set_gpt_info(struct blk_desc *dev_desc,
                }
                if (extract_env(val, &p))
                        p = val;
-               size_ll = ustrtoull(p, &p, 0);
-               parts[i].size = lldiv(size_ll, dev_desc->blksz);
+               if ((strcmp(p, "-") == 0)) {
+                       /* remove first usable lba and last block */
+                       parts[i].size = dev_desc->lba - 34  - 1 - offset;
+               } else {
+                       size_ll = ustrtoull(p, &p, 0);
+                       parts[i].size = lldiv(size_ll, dev_desc->blksz);
+               }
+
                free(val);
 
                /* start address */
@@ -310,6 +317,8 @@ static int set_gpt_info(struct blk_desc *dev_desc,
                        free(val);
                }
 
+               offset += parts[i].size + parts[i].start;
+
                /* bootable */
                if (found_key(tok, "bootable"))
                        parts[i].bootable = 1;