Received-SPF: pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Peter Harliman Liem <pliem@maxlinear.com>
To:     <atenart@kernel.org>, <herbert@gondor.apana.org.au>
CC:     <linux-crypto@vger.kernel.org>, <linux-lgm-soc@maxlinear.com>,
        <pvanleeuwen@rambus.com>, Peter Harliman Liem <pliem@maxlinear.com>
Subject: [PATCH v2 2/3] crypto: inside-secure - Add fw_little_endian option
Date:   Tue, 27 Sep 2022 11:10:09 +0800
Message-ID: <d9d673107f08be9abbbf31a199d4ca26bf985283.1664247167.git.pliem@maxlinear.com>
In-Reply-To: <cover.1664247167.git.pliem@maxlinear.com>
References: <cover.1664247167.git.pliem@maxlinear.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=WINDOWS-1252
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

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 <pliem@maxlinear.com>
---
 drivers/crypto/inside-secure/safexcel.c | 14 ++++++++++----
 drivers/crypto/inside-secure/safexcel.h |  1 +
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/insid=
e-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_cryp=
to_priv *priv)
 static int eip197_write_firmware(struct safexcel_crypto_priv *priv,
 =09=09=09=09  const struct firmware *fw)
 {
-=09const __be32 *data =3D (const __be32 *)fw->data;
+=09u32 val;
 =09int i;
=20
 =09/* Write the firmware */
-=09for (i =3D 0; i < fw->size / sizeof(u32); i++)
-=09=09writel(be32_to_cpu(data[i]),
+=09for (i =3D 0; i < fw->size / sizeof(u32); i++) {
+=09=09if (priv->data->fw_little_endian)
+=09=09=09val =3D le32_to_cpu(((const __le32 *)fw->data)[i]);
+=09=09else
+=09=09=09val =3D be32_to_cpu(((const __be32 *)fw->data)[i]);
+
+=09=09writel(val,
 =09=09       priv->base + EIP197_CLASSIFICATION_RAMS +
-=09=09       i * sizeof(__be32));
+=09=09       i * sizeof(val));
+=09}
=20
 =09/* Exclude final 2 NOPs from size */
 =09return i - EIP197_FW_TERMINAL_NOPS;
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/insid=
e-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 {
=20
 struct safexcel_priv_data {
 =09enum safexcel_eip_version version;
+=09bool fw_little_endian;
 };
=20
 /* Priority we use for advertising our algorithms */
--=20
2.17.1