[v2,2/3] crypto: inside-secure - Add fw_little_endian option

Commit Message

Peter Harliman Liem Sept. 27, 2022, 3:10 a.m. UTC

This is to add fw_little_endian option, which can
be used for platform which firmware is using little-endian
(instead of big-endian).

Signed-off-by: Peter Harliman Liem <[e-mail]>
---
 drivers/crypto/inside-secure/safexcel.c | 14 ++++++++++----
 drivers/crypto/inside-secure/safexcel.h |  1 +
 2 files changed, 11 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 8f4872470529..4d6d64ff9a0f 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -316,14 +316,20 @@  static void eip197_init_firmware(struct safexcel_crypto_priv *priv)
 static int eip197_write_firmware(struct safexcel_crypto_priv *priv,
 				  const struct firmware *fw)
 {
-	const __be32 *data = (const __be32 *)fw->data;
+	u32 val;
 	int i;
 
 	/* Write the firmware */
-	for (i = 0; i < fw->size / sizeof(u32); i++)
-		writel(be32_to_cpu(data[i]),
+	for (i = 0; i < fw->size / sizeof(u32); i++) {
+		if (priv->data->fw_little_endian)
+			val = le32_to_cpu(((const __le32 *)fw->data)[i]);
+		else
+			val = be32_to_cpu(((const __be32 *)fw->data)[i]);
+
+		writel(val,
 		       priv->base + EIP197_CLASSIFICATION_RAMS +
-		       i * sizeof(__be32));
+		       i * sizeof(val));
+	}
 
 	/* Exclude final 2 NOPs from size */
 	return i - EIP197_FW_TERMINAL_NOPS;
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index e8da8b30a392..f049293870b4 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -735,6 +735,7 @@  enum safexcel_eip_version {
 
 struct safexcel_priv_data {
 	enum safexcel_eip_version version;
+	bool fw_little_endian;
 };
 
 /* Priority we use for advertising our algorithms */