Re: [PATCH v2 1/3] soc: mediatek: add SMC fid table for SIP interface

From: Neal Liu <neal.liu@mediatek.com>
To: Sean Wang <sean.wang@kernel.org>
Cc: "Mark Rutland" <mark.rutland@arm.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"Herbert Xu" <herbert@gondor.apana.org.au>,
	wsd_upstream <wsd_upstream@mediatek.com>,
	lkml <linux-kernel@vger.kernel.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"moderated list:ARM/Mediatek SoC support"
	<linux-mediatek@lists.infradead.org>,
	"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
	"Matt Mackall" <mpm@selenic.com>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"Crystal Guo (郭晶)" <Crystal.Guo@mediatek.com>,
	"linux-arm Mailing List" <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 1/3] soc: mediatek: add SMC fid table for SIP interface
Date: Mon, 3 Jun 2019 10:39:33 +0800	[thread overview]
Message-ID: <1559529573.6663.12.camel@mtkswgap22> (raw)
In-Reply-To: <CAGp9LzpkhDhSHL=go3fvzn2Oh8DrsW8F=1YKP4ne9TDvWQVq6Q@mail.gmail.com>

Hi Sean,

On Fri, 2019-05-31 at 06:50 +0800, Sean Wang wrote:
> Hi Neal,
> 
> On Mon, May 27, 2019 at 1:39 AM Neal Liu <neal.liu@mediatek.com> wrote:
> >
> > 1. Add a header file to provide SIP interface to ARM Trusted
> > Firmware(ATF)
> > 2. Add hwrng SMC fid
> >
> > Signed-off-by: Neal Liu <neal.liu@mediatek.com>
> > ---
> >  include/linux/soc/mediatek/mtk_sip_svc.h |   51 ++++++++++++++++++++++++++++++
> >  1 file changed, 51 insertions(+)
> >  create mode 100644 include/linux/soc/mediatek/mtk_sip_svc.h
> >
> > diff --git a/include/linux/soc/mediatek/mtk_sip_svc.h b/include/linux/soc/mediatek/mtk_sip_svc.h
> > new file mode 100644
> > index 0000000..f65d403
> > --- /dev/null
> > +++ b/include/linux/soc/mediatek/mtk_sip_svc.h
> > @@ -0,0 +1,51 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright (c) 2019 MediaTek Inc.
> > + */
> > +
> > +#ifndef _MTK_SECURE_API_H_
> > +#define _MTK_SECURE_API_H_
> > +
> > +#include <linux/kernel.h>
> > +
> > +/* Error Code */
> > +#define SIP_SVC_E_SUCCESS                      0
> > +#define SIP_SVC_E_NOT_SUPPORTED                        -1
> > +#define SIP_SVC_E_INVALID_PARAMS               -2
> > +#define SIP_SVC_E_INVALID_RANGE                        -3
> > +#define SIP_SVC_E_PERMISSION_DENY              -4
> > +
> > +#ifdef CONFIG_ARM64
> > +#define MTK_SIP_SMC_AARCH_BIT                  0x40000000
> 
> #define MTK_SIP_SMC_AARCH_BIT                  BIT(30)
> 
> > +#else
> > +#define MTK_SIP_SMC_AARCH_BIT                  0x00000000
> 
> #define MTK_SIP_SMC_AARCH_BIT                  0
> 
> > +#endif
> > +
> > +/*******************************************************************************
> > + * Defines for Mediatek runtime services func ids
> > + ******************************************************************************/
> 
> It would be good if remove the trivial and below all unused comments.

Okay, I'll keep the necessary parts, thanks

> 
> > +
> > +/* Debug feature and ATF related SMC call */
> > +
> > +/* CPU operations related SMC call */
> > +
> > +/* SPM related SMC call */
> > +
> > +/* Low power related SMC call */
> > +
> > +/* AMMS related SMC call */
> > +
> > +/* Security related SMC call */
> > +/* HWRNG */
> > +#define MTK_SIP_KERNEL_GET_RND \
> > +       (0x82000206 | MTK_SIP_SMC_AARCH_BIT)
> > +
> > +/* Storage Encryption related SMC call */
> > +
> > +/* Platform related SMC call */
> > +
> > +/* Pheripheral related SMC call */
> > +
> > +/* MM related SMC call */
> > +
> > +#endif /* _MTK_SECURE_API_H_ */
> > --
> > 1.7.9.5
> >
> 
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