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https://github.com/AsahiLinux/u-boot
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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>
This commit is contained in:
Corneliu Doban
Tom Rini
parent
9a3122f769
commit
12fc1f3bb2
2 changed files with 190 additions and 0 deletions
161
cmd/gpt.c
161
cmd/gpt.c
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@ -18,6 +18,7 @@
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#include <command.h>
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#include <part.h>
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#include <part_efi.h>
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#include <part.h>
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#include <exports.h>
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#include <uuid.h>
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#include <linux/ctype.h>
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@ -621,6 +622,152 @@ static int gpt_verify(struct blk_desc *blk_dev_desc, const char *str_part)
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return ret;
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}
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/**
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* gpt_enumerate() - Enumerate partition names into environment variable.
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*
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* Enumerate partition names. Partition names are stored in gpt_partition_list
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* environment variable. Each partition name is delimited by space.
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*
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* @desc: block device descriptor
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*
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* @Return: '0' on success and -ve error on failure
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*/
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static int gpt_enumerate(struct blk_desc *desc)
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{
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struct part_driver *first_drv, *part_drv;
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int str_len = 0, tmp_len;
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char part_list[2048];
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int n_drvs;
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char *ptr;
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part_list[0] = 0;
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n_drvs = part_driver_get_count();
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if (!n_drvs) {
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printf("Failed to get partition driver count\n");
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return -ENOENT;
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}
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first_drv = part_driver_get_first();
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for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
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struct disk_partition pinfo;
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int ret;
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int i;
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for (i = 1; i < part_drv->max_entries; i++) {
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ret = part_drv->get_info(desc, i, &pinfo);
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if (ret) {
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/* no more entries in table */
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break;
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}
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ptr = &part_list[str_len];
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tmp_len = strlen((const char *)pinfo.name);
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str_len += tmp_len;
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/* +1 for space */
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str_len++;
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if (str_len > sizeof(part_list)) {
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printf("Error insufficient memory\n");
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return -ENOMEM;
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}
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strcpy(ptr, (const char *)pinfo.name);
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/* One byte for space(" ") delimiter */
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ptr[tmp_len] = ' ';
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}
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}
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if (*part_list)
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part_list[strlen(part_list) - 1] = 0;
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debug("setenv gpt_partition_list %s\n", part_list);
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return env_set("gpt_partition_list", part_list);
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}
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/**
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* gpt_setenv_part_variables() - setup partition environmental variables
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*
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* Setup the gpt_partition_name, gpt_partition_entry, gpt_partition_addr
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* and gpt_partition_size environment variables.
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*
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* @pinfo: pointer to disk partition
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* @i: partition entry
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*
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* @Return: '0' on success and -ENOENT on failure
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*/
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static int gpt_setenv_part_variables(struct disk_partition *pinfo, int i)
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{
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int ret;
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ret = env_set_hex("gpt_partition_addr", pinfo->start);
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if (ret)
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goto fail;
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ret = env_set_hex("gpt_partition_size", pinfo->size);
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if (ret)
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goto fail;
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ret = env_set_ulong("gpt_partition_entry", i);
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if (ret)
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goto fail;
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ret = env_set("gpt_partition_name", (const char *)pinfo->name);
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if (ret)
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goto fail;
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return 0;
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fail:
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return -ENOENT;
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}
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/**
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* gpt_setenv() - Dynamically setup environment variables.
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*
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* Dynamically setup environment variables for name, index, offset and size
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* for partition in GPT table after running "gpt setenv" for a partition name.
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*
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* @desc: block device descriptor
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* @name: partition name
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*
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* @Return: '0' on success and -ve err on failure
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*/
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static int gpt_setenv(struct blk_desc *desc, const char *name)
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{
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struct part_driver *first_drv, *part_drv;
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int n_drvs;
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int ret = -1;
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n_drvs = part_driver_get_count();
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if (!n_drvs) {
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printf("Failed to get partition driver count\n");
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goto fail;
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}
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first_drv = part_driver_get_first();
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for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
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struct disk_partition pinfo;
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int i;
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for (i = 1; i < part_drv->max_entries; i++) {
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ret = part_drv->get_info(desc, i, &pinfo);
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if (ret) {
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/* no more entries in table */
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break;
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}
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if (!strcmp(name, (const char *)pinfo.name)) {
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/* match found, setup environment variables */
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ret = gpt_setenv_part_variables(&pinfo, i);
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if (ret)
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goto fail;
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return 0;
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}
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}
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}
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fail:
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return ret;
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}
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static int do_disk_guid(struct blk_desc *dev_desc, char * const namestr)
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{
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int ret;
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@ -827,6 +974,10 @@ static int do_gpt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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} else if ((strcmp(argv[1], "verify") == 0)) {
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ret = gpt_verify(blk_dev_desc, argv[4]);
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printf("Verify GPT: ");
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} else if ((strcmp(argv[1], "setenv") == 0)) {
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ret = gpt_setenv(blk_dev_desc, argv[4]);
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} else if ((strcmp(argv[1], "enumerate") == 0)) {
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ret = gpt_enumerate(blk_dev_desc);
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} else if (strcmp(argv[1], "guid") == 0) {
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ret = do_disk_guid(blk_dev_desc, argv[4]);
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#ifdef CONFIG_CMD_GPT_RENAME
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@ -857,7 +1008,17 @@ U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
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" to interface\n"
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" Example usage:\n"
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" gpt write mmc 0 $partitions\n"
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" - write the GPT to device\n"
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" gpt verify mmc 0 $partitions\n"
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" - verify the GPT on device against $partitions\n"
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" gpt setenv mmc 0 $name\n"
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" - setup environment variables for partition $name:\n"
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" gpt_partition_addr, gpt_partition_size,\n"
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" gpt_partition_name, gpt_partition_entry\n"
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" gpt enumerate mmc 0\n"
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" - store list of partitions to gpt_partition_list environment variable\n"
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" read <interface> <dev>\n"
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" - read GPT into a data structure for manipulation\n"
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" gpt guid <interface> <dev>\n"
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" - print disk GUID\n"
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" gpt guid <interface> <dev> <varname>\n"
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@ -9,6 +9,7 @@
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#include <blk.h>
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#include <ide.h>
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#include <uuid.h>
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#include <linker_lists.h>
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#include <linux/list.h>
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struct block_drvr {
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@ -481,5 +482,33 @@ int layout_mbr_partitions(struct disk_partition *p, int count,
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#endif
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#ifdef CONFIG_PARTITIONS
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/**
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* part_driver_get_count() - get partition driver count
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*
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* @return - number of partition drivers
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*/
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static inline int part_driver_get_count(void)
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{
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return ll_entry_count(struct part_driver, part_driver);
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}
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/**
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* part_driver_get_first() - get first partition driver
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*
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* @return - pointer to first partition driver on success, otherwise NULL
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*/
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static inline struct part_driver *part_driver_get_first(void)
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{
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return ll_entry_start(struct part_driver, part_driver);
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}
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#else
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static inline int part_driver_get_count(void)
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{ return 0; }
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static inline struct part_driver *part_driver_get_first(void)
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{ return NULL; }
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#endif /* CONFIG_PARTITIONS */
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#endif /* _PART_H */
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