This is a note to let you know that I've just added the patch titled
remoteproc: imx_rproc: Use imx specific hook for find_loaded_rsc_table
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
remoteproc-imx_rproc-use-imx-specific-hook-for-find_.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9fc154c79db48ea87683cc090f18c168d1334257
Author: Peng Fan <peng.fan@xxxxxxx>
Date: Fri Jul 19 16:36:12 2024 +0800
remoteproc: imx_rproc: Use imx specific hook for find_loaded_rsc_table
[ Upstream commit e954a1bd16102abc800629f9900715d8ec4c3130 ]
If there is a resource table device tree node, use the address as
the resource table address, otherwise use the address(where
.resource_table section loaded) inside the Cortex-M elf file.
And there is an update in NXP SDK that Resource Domain Control(RDC)
enabled to protect TCM, linux not able to write the TCM space when
updating resource table status and cause kernel dump. So use the address
from device tree could avoid kernel dump.
Note: NXP M4 SDK not check resource table update, so it does not matter
use whether resource table address specified in elf file or in device
tree. But to reflect the fact that if people specific resource table
address in device tree, it means people are aware and going to use it,
not the address specified in elf file.
Reviewed-by: Iuliana Prodan <iuliana.prodan@xxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
Reviewed-by: Daniel Baluta <daniel.baluta@xxxxxxx>
Link: https://lore.kernel.org/r/20240719-imx_rproc-v2-2-10d0268c7eb1@xxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index c45c87a94d62a..107da44ab3b76 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -529,6 +529,17 @@ static struct resource_table *imx_rproc_get_loaded_rsc_table(struct rproc *rproc
return (struct resource_table *)priv->rsc_table;
}
+static struct resource_table *
+imx_rproc_elf_find_loaded_rsc_table(struct rproc *rproc, const struct firmware *fw)
+{
+ struct imx_rproc *priv = rproc->priv;
+
+ if (priv->rsc_table)
+ return (struct resource_table *)priv->rsc_table;
+
+ return rproc_elf_find_loaded_rsc_table(rproc, fw);
+}
+
static const struct rproc_ops imx_rproc_ops = {
.prepare = imx_rproc_prepare,
.attach = imx_rproc_attach,
@@ -538,7 +549,7 @@ static const struct rproc_ops imx_rproc_ops = {
.da_to_va = imx_rproc_da_to_va,
.load = rproc_elf_load_segments,
.parse_fw = imx_rproc_parse_fw,
- .find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
+ .find_loaded_rsc_table = imx_rproc_elf_find_loaded_rsc_table,
.get_loaded_rsc_table = imx_rproc_get_loaded_rsc_table,
.sanity_check = rproc_elf_sanity_check,
.get_boot_addr = rproc_elf_get_boot_addr,
