diff options
author | Simon Glass <sjg@chromium.org> | 2021-03-15 07:25:36 +0300 |
---|---|---|
committer | Simon Glass <sjg@chromium.org> | 2021-03-26 07:03:09 +0300 |
commit | ab933d802643ca51d276f0f449921a047126f8a1 (patch) | |
tree | d984baab5d4daa7057bdfc281cb693db6468500d /drivers/core | |
parent | 95a5825f3134ff47f1e0cf37b4014b5c2e2027b5 (diff) | |
download | u-boot-ab933d802643ca51d276f0f449921a047126f8a1.tar.xz |
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 <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/core')
-rw-r--r-- | drivers/core/root.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/core/root.c b/drivers/core/root.c index 3e52452cd8..446ac2ff77 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -133,6 +133,18 @@ static int dm_setup_inst(void) { DM_ROOT_NON_CONST = DM_DEVICE_GET(root); + if (CONFIG_IS_ENABLED(OF_PLATDATA_RT)) { + struct udevice_rt *urt; + int n_ents; + + /* Allocate the udevice_rt table */ + n_ents = ll_entry_count(struct udevice, udevice); + urt = calloc(n_ents, sizeof(struct udevice_rt)); + if (!urt) + return log_msg_ret("urt", -ENOMEM); + gd_set_dm_udevice_rt(urt); + } + return 0; } @@ -205,7 +217,7 @@ int dm_scan_plat(bool pre_reloc_only) { int ret; - if (CONFIG_IS_ENABLED(OF_PLATDATA)) { + if (CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT)) { struct driver_rt *dyn; int n_ents; |