From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 24 Jun 2025 13:19:40 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uU1gi-00AaEz-25 for lore@lore.pengutronix.de; Tue, 24 Jun 2025 13:19:40 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uU1gi-0001nB-1t for lore@pengutronix.de; Tue, 24 Jun 2025 13:19:40 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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Tue, 24 Jun 2025 12:36:08 +0200 Message-ID: <9a5bf6cc-3f80-4b70-a057-a4d6b9c8d637@pengutronix.de> Date: Tue, 24 Jun 2025 12:36:07 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Marco Felsch , barebox@lists.infradead.org References: <20250619152556.3749995-1-m.felsch@pengutronix.de> <20250619152556.3749995-5-m.felsch@pengutronix.de> From: Ahmad Fatoum Content-Language: en-US, de-DE, de-BE In-Reply-To: <20250619152556.3749995-5-m.felsch@pengutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250624_033609_311729_18E37ED0 X-CRM114-Status: GOOD ( 17.97 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 5/5] ARM: mach-imx: tzasc: add imx6q_tzc380_is_enabled X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On 6/19/25 17:25, Marco Felsch wrote: > In preparation of adding an i.MX6QD optee-early helper add a helper to > check if the early code e.g. PBL/BootROM enabled the TZC380 controllers > on the i.MX6QDL. > > Signed-off-by: Marco Felsch Reviewed-by: Ahmad Fatoum > --- > arch/arm/mach-imx/tzasc.c | 15 +++++++++++++++ > include/mach/imx/tzasc.h | 1 + > 2 files changed, 16 insertions(+) > > diff --git a/arch/arm/mach-imx/tzasc.c b/arch/arm/mach-imx/tzasc.c > index aad6ece64f18..14b72386ad53 100644 > --- a/arch/arm/mach-imx/tzasc.c > +++ b/arch/arm/mach-imx/tzasc.c > @@ -76,6 +76,9 @@ > #define MX6_TZASC1_BASE 0x21d0000 > #define MX6_TZASC2_BASE 0x21d4000 > > +#define MX6_GPR_TZASC1_EN BIT(0) > +#define MX6_GPR_TZASC2_EN BIT(1) > + > #define GPR_TZASC_EN BIT(0) > #define GPR_TZASC_ID_SWAP_BYPASS BIT(1) > #define GPR_TZASC_EN_LOCK BIT(16) > @@ -293,6 +296,18 @@ void imx6q_tzc380_early_ns_region1(void) > TZC380_REGION_SP_NS_RW); > } > > +bool imx6q_tzc380_is_enabled(void) > +{ > + u32 __iomem *gpr = IOMEM(MX6_IOMUXC_BASE_ADDR); > + > + /* > + * MX6_GPR_TZASC1_EN and MX6_GPR_TZASC2_EN are sticky bits which > + * preserve their values once set until the next power-up cycle. > + */ > + return (readl(&gpr[9]) & (MX6_GPR_TZASC1_EN | MX6_GPR_TZASC2_EN)) == > + (MX6_GPR_TZASC1_EN | MX6_GPR_TZASC2_EN); > +} > + > void imx8m_tzc380_init(void) > { > u32 __iomem *gpr = IOMEM(MX8M_IOMUXC_GPR_BASE_ADDR); > diff --git a/include/mach/imx/tzasc.h b/include/mach/imx/tzasc.h > index 4d3f26fc82f1..59ec56a5ec60 100644 > --- a/include/mach/imx/tzasc.h > +++ b/include/mach/imx/tzasc.h > @@ -7,6 +7,7 @@ > #include > > void imx6q_tzc380_early_ns_region1(void); > +bool imx6q_tzc380_is_enabled(void); > void imx8m_tzc380_init(void); > bool imx8m_tzc380_is_enabled(void); > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |