diff options
| author | Simon Glass <[email protected]> | 2021-03-15 17:25:36 +1300 |
|---|---|---|
| committer | Simon Glass <[email protected]> | 2021-03-26 17:03:09 +1300 |
| commit | ab933d802643ca51d276f0f449921a047126f8a1 (patch) | |
| tree | d984baab5d4daa7057bdfc281cb693db6468500d /include | |
| parent | 95a5825f3134ff47f1e0cf37b4014b5c2e2027b5 (diff) | |
dm: core: Create a struct for device runtime info
At present when driver model needs to change a device it simply updates
the struct udevice structure. But with of-platdata-inst most of the fields
are not modified at runtime. In fact, typically only the flags need to
change.
For systems running SPL from read-only memory it is convenient to separate
out the runtime information, so that the devices don't need to be copied
before being used.
Create a new udevice_rt table, similar to the existing driver_rt. For now
it just holds the flags, although they are not used in this patch.
Add a new Kconfig for the driver_rt data, since this is not needed when
of-platdata-inst is used.
Signed-off-by: Simon Glass <[email protected]>
Signed-off-by: Simon Glass <[email protected]>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/global_data.h | 16 | ||||
| -rw-r--r-- | include/dm/device.h | 15 |
2 files changed, 29 insertions, 2 deletions
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index c24f5e0e973..f6189eff4eb 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -215,10 +215,14 @@ struct global_data { * @uclass_root_s. */ struct list_head *uclass_root; -# if CONFIG_IS_ENABLED(OF_PLATDATA) +# if CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT) /** @dm_driver_rt: Dynamic info about the driver */ struct driver_rt *dm_driver_rt; # endif +#if CONFIG_IS_ENABLED(OF_PLATDATA_RT) + /** @dm_udevice_rt: Dynamic info about the udevice */ + struct udevice_rt *dm_udevice_rt; +# endif #endif #ifdef CONFIG_TIMER /** @@ -483,7 +487,7 @@ struct global_data { #define gd_set_of_root(_root) #endif -#if CONFIG_IS_ENABLED(OF_PLATDATA) +#if CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT) #define gd_set_dm_driver_rt(dyn) gd->dm_driver_rt = dyn #define gd_dm_driver_rt() gd->dm_driver_rt #else @@ -491,6 +495,14 @@ struct global_data { #define gd_dm_driver_rt() NULL #endif +#if CONFIG_IS_ENABLED(OF_PLATDATA_RT) +#define gd_set_dm_udevice_rt(dyn) gd->dm_udevice_rt = dyn +#define gd_dm_udevice_rt() gd->dm_udevice_rt +#else +#define gd_set_dm_udevice_rt(dyn) +#define gd_dm_udevice_rt() NULL +#endif + #ifdef CONFIG_GENERATE_ACPI_TABLE #define gd_acpi_ctx() gd->acpi_ctx #else diff --git a/include/dm/device.h b/include/dm/device.h index 9183356468f..8e16f2ea497 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -190,6 +190,21 @@ struct udevice { #endif }; +/** + * udevice_rt - runtime information set up by U-Boot + * + * This is only used with OF_PLATDATA_RT + * + * There is one of these for every udevice in the linker list, indexed by + * the udevice_info idx value. + * + * @flags_: Flags for this device DM_FLAG_... (do not access outside driver + * model) + */ +struct udevice_rt { + u32 flags_; +}; + /* Maximum sequence number supported */ #define DM_MAX_SEQ 999 |