DM: crypto/rsa_mod_exp: Add rsa Modular Exponentiation DM driver

Add a new rsa uclass for performing modular exponentiation and implement
the software driver basing on this uclass.

Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
CC: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c b/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c
new file mode 100644
index 0000000000..266f09484f
--- /dev/null
+++ b/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c
@@ -0,0 +1,31 @@
+/*
+ * (C) Copyright 2014 Freescale Semiconductor, Inc
+ * Author: Ruchika Gupta <ruchika.gupta@freescale.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <u-boot/rsa-mod-exp.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <linux/list.h>
+
+int rsa_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
+		struct key_prop *node, uint8_t *out)
+{
+	const struct mod_exp_ops *ops = device_get_ops(dev);
+
+	if (!ops->mod_exp)
+		return -ENOSYS;
+
+	return ops->mod_exp(dev, sig, sig_len, node, out);
+}
+
+UCLASS_DRIVER(mod_exp) = {
+	.id		= UCLASS_MOD_EXP,
+	.name		= "rsa_mod_exp",
+};