cmd: gpt: add eMMC and GPT support

Add eMMC and GPT support.
- GPT partition list and command to create the GPT added to u-boot
  environment
- eMMC boot commands added to u-boot environment
- new gpt commands (enumarate and setenv) that are used by broadcom
  update scripts and boot commands
- eMMC specific u-boot configurations with environment saved in eMMC
  and GPT support

Signed-off-by: Corneliu Doban <cdoban@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
[trini: Make gpt_setenv initialize ret to -1, given relevant return
        error values]
Signed-off-by: Tom Rini <trini@konsulko.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/include/part.h b/include/part.h
index fac3636..815515a 100644
--- a/include/part.h
+++ b/include/part.h
@@ -9,6 +9,7 @@
 #include <blk.h>
 #include <ide.h>
 #include <uuid.h>
+#include <linker_lists.h>
 #include <linux/list.h>
 
 struct block_drvr {
@@ -481,5 +482,33 @@ int layout_mbr_partitions(struct disk_partition *p, int count,
 
 #endif
 
+#ifdef CONFIG_PARTITIONS
+/**
+ * part_driver_get_count() - get partition driver count
+ *
+ * @return - number of partition drivers
+ */
+static inline int part_driver_get_count(void)
+{
+	return ll_entry_count(struct part_driver, part_driver);
+}
+
+/**
+ * part_driver_get_first() - get first partition driver
+ *
+ * @return - pointer to first partition driver on success, otherwise NULL
+ */
+static inline struct part_driver *part_driver_get_first(void)
+{
+	return ll_entry_start(struct part_driver, part_driver);
+}
+
+#else
+static inline int part_driver_get_count(void)
+{ return 0; }
+
+static inline struct part_driver *part_driver_get_first(void)
+{ return NULL; }
+#endif /* CONFIG_PARTITIONS */
 
 #endif /* _PART_H */