From: Corneliu Doban <corneliu.do...@broadcom.com>
Add enumeration of gpt partitions and saving this information into
U-Boot variables.
Signed-off-by: Corneliu Doban <corneliu.do...@broadcom.com>
Signed-off-by: Vladimir Olovyannikov <vladimir.olovyanni...@broadcom.com>
---
cmd/gpt.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 95 insertions(+)
diff --git a/cmd/gpt.c b/cmd/gpt.c
index 0c4349f4b2..061ffaa757 100644
--- a/cmd/gpt.c
+++ b/cmd/gpt.c
@@ -2,6 +2,8 @@
/*
* cmd_gpt.c -- GPT (GUID Partition Table) handling command
*
+ * Copyright (C) 2019 Broadcom
+ * author: Corneliu Doban <corneliu.do...@broadcom.com>
* Copyright (C) 2015
* Lukasz Majewski <l.majew...@majess.pl>
*
@@ -804,6 +806,88 @@ static int do_rename_gpt_parts(struct blk_desc *dev_desc,
char *subcomm,
}
#endif
+/*
+ * Enumerate partition names into environment variable.
+ */
+static int gpt_enumerate(struct blk_desc *blk_dev_desc)
+{
+ disk_partition_t pinfo;
+ struct part_driver *first_drv =
+ ll_entry_start(struct part_driver, part_driver);
+ const int n_drvs = ll_entry_count(struct part_driver, part_driver);
+ struct part_driver *part_drv;
+ char part_list[2048];
+
+ part_list[0] = 0;
+
+ for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
+ int ret;
+ int i;
+
+ for (i = 1; i < part_drv->max_entries; i++) {
+ ret = part_drv->get_info(blk_dev_desc, i, &pinfo);
+ if (ret != 0) {
+ /* no more entries in table */
+ break;
+ }
+ strcat(part_list, (const char *)pinfo.name);
+ strcat(part_list, " ");
+ }
+ }
+ if (strlen(part_list) > 0)
+ part_list[strlen(part_list) - 1] = 0;
+ debug("setenv gpt_partition_list %s\n", part_list);
+ env_set("gpt_partition_list", part_list);
+ return 0;
+}
+
+/*
+ * Dynamically setup environment variables for name, index, offset and size
+ * for partition in GPT table after running "gpt setenv" for a partition name.
+ * gpt_partition_name, gpt_partition_entry, gpt_partition_addr and
+ * gpt_partition_size environment variables will be set.
+ */
+static int gpt_setenv(struct blk_desc *blk_dev_desc, const char *name)
+{
+ disk_partition_t pinfo;
+ struct part_driver *first_drv =
+ ll_entry_start(struct part_driver, part_driver);
+ const int n_drvs = ll_entry_count(struct part_driver, part_driver);
+ struct part_driver *part_drv;
+ char buf[32];
+
+ for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
+ int ret;
+ int i;
+
+ for (i = 1; i < part_drv->max_entries; i++) {
+ ret = part_drv->get_info(blk_dev_desc, i, &pinfo);
+
+ if (ret != 0) {
+ /* no more entries in table */
+ break;
+ }
+ if (strcmp(name, (const char *)pinfo.name) == 0) {
+ /* match found, setup environment variables */
+ sprintf(buf, LBAF, pinfo.start);
+ debug("setenv gpt_partition_addr %s\n", buf);
+ env_set("gpt_partition_addr", buf);
+ sprintf(buf, LBAF, pinfo.size);
+ debug("setenv gpt_partition_size %s\n", buf);
+ env_set("gpt_partition_size", buf);
+ sprintf(buf, "%d", i);
+ debug("setenv gpt_partition_entry %s\n", buf);
+ env_set("gpt_partition_entry", buf);
+ sprintf(buf, "%s", pinfo.name);
+ debug("setenv gpt_partition_name %s\n", buf);
+ env_set("gpt_partition_name", buf);
+ return 0;
+ }
+ }
+ }
+ return -1;
+}
+
/**
* do_gpt(): Perform GPT operations
*
@@ -855,6 +939,10 @@ static int do_gpt(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
(strcmp(argv[1], "rename") == 0)) {
ret = do_rename_gpt_parts(blk_dev_desc, argv[1], argv[4],
argv[5]);
#endif
+ } else if ((strcmp(argv[1], "setenv") == 0)) {
+ ret = gpt_setenv(blk_dev_desc, argv[4]);
+ } else if ((strcmp(argv[1], "enumerate") == 0)) {
+ ret = gpt_enumerate(blk_dev_desc);
} else {
return CMD_RET_USAGE;
}
@@ -897,4 +985,11 @@ U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
" gpt swap mmc 0 foo bar\n"
" gpt rename mmc 0 3 foo\n"
#endif
+ " gpt setenv mmc 0 $name\n"
+ " - setup environment variables for partition $name:\n"
+ " gpt_partition_addr, gpt_partition_size,\n"
+ " gpt_partition_name, gpt_partition_entry\n"
+ " gpt enumerate mmc 0\n"
+ " - store list of partitions to gpt_partition_list environment
variable\n"
+
);
--
2.17.1
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