From: Peng Fan <peng.fan@xxxxxxx>
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@xxxxxxx>
---
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
