From: Wendy Liang <wendy.liang@xxxxxxxxxx>
Add a function to set the firmware checksum resource.
The function will call the firmware loader to calculate
the firmware checksum and set it to the resource table.
Signed-off-by: Wendy Liang <jliang@xxxxxxxxxx>
Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 54 ++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index f13f56d..447c28b 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -897,6 +897,60 @@ static bool rproc_is_running(struct rproc *rproc)
return (rproc->state == RPROC_RUNNING) ? true : false;
}
+/**
+ * rproc_handle_fw_chksum() - handle firmware checksum resource
+ * @rproc: rproc handle
+ * @fw: firmware
+ * @offset: returns fw_chksum resource offset.
+ *
+ * This function will handle request to set the firmware checksum.
+ */
+static
+struct fw_rsc_fw_chksum *rproc_handle_fw_chksum(struct rproc *rproc,
+ const struct firmware *fw, int *offset)
+{
+ struct fw_rsc_fw_chksum *rsc = NULL;
+ int i, tablesz;
+ struct device *dev = &rproc->dev;
+ struct resource_table *table;
+
+ /* look for the resource table */
+ table = rproc_find_rsc_table(rproc, fw, &tablesz);
+ if (!table) {
+ dev_err(dev, "Failed to find resource table\n");
+ return NULL;
+ }
+
+ for (i = 0; i < rproc->table_ptr->num; i++) {
+ int ret = 0;
+ int tmpoffset = rproc->table_ptr->offset[i];
+ struct fw_rsc_hdr *hdr = (void *)rproc->table_ptr + tmpoffset;
+ int avail = tablesz - tmpoffset - sizeof(*hdr);
+
+ if (hdr->type != RSC_FW_CHKSUM)
+ continue;
+
+ rsc = (struct fw_rsc_fw_chksum *)((void *)hdr + sizeof(*hdr));
+ if (sizeof(*rsc) > avail) {
+ dev_err(dev, "firmware checksum rsc is truncated\n");
+ return NULL;
+ }
+ if (rproc->fw_ops->get_chksum) {
+ ret = rproc->fw_ops->get_chksum(rproc, fw,
+ rsc->algo, rsc->chksum, sizeof(rsc->chksum));
+ if (ret) {
+ dev_err(dev,
+ "failed to get firmware chksum.\n");
+ return NULL;
+ }
+ }
+ *offset = tmpoffset + sizeof(*hdr);
+ return rsc;
+ }
+
+ return NULL;
+}
+
/*
* check if the remote needs start.
*/
--
1.9.1
--
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