diff options
| author | Simon Glass <sjg@chromium.org> | 2021-03-15 17:25:38 +1300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2021-03-26 17:03:09 +1300 |
| commit | baf0371883b243fa793ba3f984704b027705d6a9 (patch) | |
| tree | 28a07a8f9336d9b5b8aa202e271ae00e1f311949 /drivers/core | |
| parent | 6f644efdd803e0718d39266f75c0535a534cc601 (diff) | |
dm: core: Allow storing priv/plat data separately
At present the device priv/data data allocated by dtoc is stored in the
data section along with other variables. On some platforms it is better
to allocate space for it separately, e.g. if SPL is running from read-only
memory.
Create a new space with the same size as that allocated by dtoc, ready for
use.
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 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/core/root.c b/drivers/core/root.c index 446ac2ff77..82b3c7de71 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -11,6 +11,7 @@ #include <fdtdec.h> #include <log.h> #include <malloc.h> +#include <asm-generic/sections.h> #include <asm/global_data.h> #include <linux/libfdt.h> #include <dm/acpi.h> @@ -135,7 +136,9 @@ static int dm_setup_inst(void) if (CONFIG_IS_ENABLED(OF_PLATDATA_RT)) { struct udevice_rt *urt; + void *base; int n_ents; + uint size; /* Allocate the udevice_rt table */ n_ents = ll_entry_count(struct udevice, udevice); @@ -143,6 +146,15 @@ static int dm_setup_inst(void) if (!urt) return log_msg_ret("urt", -ENOMEM); gd_set_dm_udevice_rt(urt); + + /* Now allocate space for the priv/plat data, and copy it in */ + size = __priv_data_end - __priv_data_start; + + base = calloc(1, size); + if (!base) + return log_msg_ret("priv", -ENOMEM); + memcpy(base, __priv_data_start, size); + gd_set_dm_priv_base(base); } return 0; |