[PATCH v2 11/12] remoteproc: stm32: Introduce new loaded rsc ops for synchronisation

[Mathieu Poirier <mathieu.poirier@linaro.org>]

Introduce new elf find loaded resource table rproc_ops functions to be
used when synchonising with an MCU.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Loic Pallardy <loic.pallardy@st.com>
---
 drivers/remoteproc/stm32_rproc.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index b8ae8aed5585..dcae6103e3df 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -319,6 +319,15 @@ static int stm32_rproc_sync_parse_fw(struct rproc *rproc,
 	return stm32_rproc_sync_elf_load_rsc_table(rproc, fw);
 }
 
+static struct resource_table *
+stm32_rproc_sync_elf_find_loaded_rsc_table(struct rproc *rproc,
+					   const struct firmware *fw)
+{
+	struct stm32_rproc *ddata = rproc->priv;
+
+	return (struct resource_table *)ddata->rsc_va;
+}
+
 static irqreturn_t stm32_rproc_wdg(int irq, void *data)
 {
 	struct platform_device *pdev = data;
@@ -593,6 +602,7 @@ static __maybe_unused struct rproc_ops st_rproc_sync_ops = {
 	.start		= stm32_rproc_sync_start,
 	.stop		= stm32_rproc_stop,
 	.parse_fw       = stm32_rproc_sync_parse_fw,
+	.find_loaded_rsc_table = stm32_rproc_sync_elf_find_loaded_rsc_table,
 };
 
 static const struct of_device_id stm32_rproc_match[] = {
-- 
2.20.1