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cmd: bcb: extend BCB C API to allow read/write the fields

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Currently BCB C API only allows to modify 'command' BCB field.
Extend it so that we can also read and modify all the available
BCB fields (command, status, recovery, stage).

Co-developed-by: Cody Schuffelen <schuffelen@google.com>
Signed-off-by: Cody Schuffelen <schuffelen@google.com>
Signed-off-by: Dmitrii Merkurev <dimorinny@google.com>
Cc: Eugeniu Rosca <erosca@de.adit-jv.com>
Cc: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Cc: Sean Anderson <sean.anderson@seco.com>
Cc: Cody Schuffelen <schuffelen@google.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # on vim3
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
This commit is contained in:
Dmitrii Merkurev
2023-11-10 05:59:55 +00:00
committed by Tom Rini
parent a654369b49
commit dfeb4f0d79
3 changed files with 177 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
include/bcb.h
View File

@@ -8,15 +8,69 @@
#ifndef __BCB_H__
#define __BCB_H__
#include <part.h>
enum bcb_field {
BCB_FIELD_COMMAND,
BCB_FIELD_STATUS,
BCB_FIELD_RECOVERY,
BCB_FIELD_STAGE
};
#if IS_ENABLED(CONFIG_CMD_BCB)
int bcb_write_reboot_reason(const char *iface, int devnum, char *partp, const char *reasonp);
int bcb_find_partition_and_load(const char *iface,
int devnum, char *partp);
int bcb_load(struct blk_desc *block_description,
struct disk_partition *disk_partition);
int bcb_set(enum bcb_field field, const char *value);
/**
* bcb_get() - get the field value.
* @field: field to get
* @value_out: buffer to copy bcb field value to
* @value_size: buffer size to avoid overflow in case
* value_out is smaller then the field value
*/
int bcb_get(enum bcb_field field, char *value_out, size_t value_size);
int bcb_store(void);
void bcb_reset(void);
#else
#include <linux/errno.h>
static inline int bcb_write_reboot_reason(const char *iface, int devnum,
char *partp, const char *reasonp)
static inline int bcb_load(struct blk_desc *block_description,
struct disk_partition *disk_partition)
{
return -EOPNOTSUPP;
}
static inline int bcb_find_partition_and_load(const char *iface,
int devnum, char *partp)
{
return -EOPNOTSUPP;
}
static inline int bcb_set(enum bcb_field field, const char *value)
{
return -EOPNOTSUPP;
}
static inline int bcb_get(enum bcb_field field, char *value_out)
{
return -EOPNOTSUPP;
}
static inline int bcb_store(void)
{
return -EOPNOTSUPP;
}
static inline void bcb_reset(void)
{
}
#endif
#endif /* __BCB_H__ */