diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/bootcount.h | 48 | ||||
| -rw-r--r-- | include/dm/uclass-id.h | 1 |
2 files changed, 49 insertions, 0 deletions
diff --git a/include/bootcount.h b/include/bootcount.h index 671adcc410..daee84316c 100644 --- a/include/bootcount.h +++ b/include/bootcount.h @@ -10,6 +10,54 @@ #include <asm/io.h> #include <asm/byteorder.h> +#ifdef CONFIG_DM_BOOTCOUNT + +struct bootcount_ops { + /** + * get() - get the current bootcount value + * + * Returns the current counter value of the bootcount backing + * store. + * + * @dev: Device to read from + * @bootcount: Address to put the current bootcount value + */ + int (*get)(struct udevice *dev, u32 *bootcount); + + /** + * set() - set a bootcount value (e.g. to reset or increment) + * + * Sets the value in the bootcount backing store. + * + * @dev: Device to read from + * @bootcount: New bootcount value to store + */ + int (*set)(struct udevice *dev, const u32 bootcount); +}; + +/* Access the operations for a bootcount device */ +#define bootcount_get_ops(dev) ((struct bootcount_ops *)(dev)->driver->ops) + +/** + * dm_bootcount_get() - Read the current value from a bootcount storage + * + * @dev: Device to read from + * @bootcount: Place to put the current bootcount + * @return 0 if OK, -ve on error + */ +int dm_bootcount_get(struct udevice *dev, u32 *bootcount); + +/** + * dm_bootcount_set() - Write a value to a bootcount storage + * + * @dev: Device to read from + * @bootcount: Value to be written to the backing storage + * @return 0 if OK, -ve on error + */ +int dm_bootcount_set(struct udevice *dev, u32 bootcount); + +#endif + #if defined(CONFIG_SPL_BOOTCOUNT_LIMIT) || defined(CONFIG_BOOTCOUNT_LIMIT) #if !defined(CONFIG_SYS_BOOTCOUNT_LE) && !defined(CONFIG_SYS_BOOTCOUNT_BE) diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 5d4e207fd1..e960e48b85 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -32,6 +32,7 @@ enum uclass_id { UCLASS_AXI, /* AXI bus */ UCLASS_BLK, /* Block device */ UCLASS_BOARD, /* Device information from hardware */ + UCLASS_BOOTCOUNT, /* Bootcount backing store */ UCLASS_CLK, /* Clock source, e.g. used by peripherals */ UCLASS_CPU, /* CPU, typically part of an SoC */ UCLASS_CROS_EC, /* Chrome OS EC */ |