[PATCH] remoteproc: imx_rproc: use imx specific hook for find_loaded_rsc_table

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at nxp.com>

When loading elf and kicking M core from Linux, previously we directly
use the address of the resource table in elf file. After i.MX8MN/P
RDC enabled to proect TCM, linux not able to access the TCM space
when updating resource table status and cause kernel dump.

So let's check whether rsc_table is available, if available, we use this
address.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 drivers/remoteproc/imx_rproc.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index ff8170dbbc3c..96a56ab39ccb 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -497,6 +497,17 @@ 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,
@@ -506,7 +517,7 @@ 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,
-- 
2.25.1