From patchwork Wed Apr 16 11:50:51 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sachin Kamat X-Patchwork-Id: 4000331 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id C8704BFF02 for ; Wed, 16 Apr 2014 11:54:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BB2F0202E6 for ; Wed, 16 Apr 2014 11:54:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 88FF62028D for ; Wed, 16 Apr 2014 11:54:22 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WaONv-000100-VU; Wed, 16 Apr 2014 11:52:11 +0000 Received: from mail-pd0-f169.google.com ([209.85.192.169]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WaONt-0000mY-Lz for linux-arm-kernel@lists.infradead.org; Wed, 16 Apr 2014 11:52:10 +0000 Received: by mail-pd0-f169.google.com with SMTP id fp1so10719679pdb.0 for ; Wed, 16 Apr 2014 04:51:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=U23OTT7MH/DAzWBtQuMrT9A3UxSiNV4Fk6d4wfJiTYw=; b=HPQyxqdfpGmDUKBB8Vt7ug/uVT7r9I/7EBKxo7phYQJ3Ms0X/PYWegjii/gUqf8sq2 sRoa79781Bf2jadxoTTUnxLY7PyjAlypTdu48v2uDkd25fZhnBSuu7MVZbbDa8RqJQkB NdnryqidhDd+ii6skb+xrCk+3gbGlLTc1mdkza2WncYyR4IIM2daVBmYaxNvqQDSDsF7 NtW5yIh6npfa/b21QK6jRN8qkWa3yqUTlMYRPp6P+HzzgkrRx8x947QBvgl21hcHX09b C1ib6XcDV+mazHFz4xKmeMm/IJD4UXKyRcEScyRjdInaUqgbtO6yqhJGSrxubFXTuvji J+bg== X-Gm-Message-State: ALoCoQnDmOdWSHm3IvCSw7C8dRSVUL+T41fA8ZwuOMoFPZRvGkCCdl7CW3ZWPEC57vXnUqzVPhLI X-Received: by 10.66.250.161 with SMTP id zd1mr8056106pac.136.1397649104872; Wed, 16 Apr 2014 04:51:44 -0700 (PDT) Received: from linaro.sisodomain.com ([115.113.119.130]) by mx.google.com with ESMTPSA id 10sm23489245pbo.51.2014.04.16.04.51.41 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 16 Apr 2014 04:51:44 -0700 (PDT) From: Sachin Kamat To: linux-samsung-soc@vger.kernel.org Subject: [PATCH Resend] ARM: EXYNOS: Map SYSRAM address through DT Date: Wed, 16 Apr 2014 17:20:51 +0530 Message-Id: <1397649051-3288-1-git-send-email-sachin.kamat@linaro.org> X-Mailer: git-send-email 1.7.9.5 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140416_045209_780410_99A30023 X-CRM114-Status: GOOD ( 17.85 ) X-Spam-Score: 0.0 (/) Cc: sachin.kamat@linaro.org, devicetree@vger.kernel.org, kgene.kim@samsung.com, linux-arm-kernel@lists.infradead.org, cw00.choi@samsung.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Instead of hardcoding the SYSRAM details for each SoC, pass this information through device tree (DT) and make the code SoC agnostic. Signed-off-by: Sachin Kamat Tested-by: Chanwoo Choi Acked-by: Heiko Stuebner --- Rebased on latest linux-next. --- .../devicetree/bindings/arm/samsung-boards.txt | 11 +++ arch/arm/boot/dts/exynos4210-universal_c210.dts | 9 ++ arch/arm/boot/dts/exynos4210.dtsi | 10 ++ arch/arm/boot/dts/exynos4x12.dtsi | 10 ++ arch/arm/boot/dts/exynos5.dtsi | 5 + arch/arm/boot/dts/exynos5250.dtsi | 5 + arch/arm/boot/dts/exynos5420.dtsi | 5 + arch/arm/mach-exynos/exynos.c | 104 ++++++++------------ arch/arm/mach-exynos/include/mach/map.h | 7 -- 9 files changed, 95 insertions(+), 71 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/samsung-boards.txt b/Documentation/devicetree/bindings/arm/samsung-boards.txt index 2168ed31e1b0..f79710eb7e79 100644 --- a/Documentation/devicetree/bindings/arm/samsung-boards.txt +++ b/Documentation/devicetree/bindings/arm/samsung-boards.txt @@ -7,6 +7,17 @@ Required root node properties: (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board. (b) "samsung,exynos4210" - for boards based on Exynos4210 SoC. + - sysram node, specifying the type (secure or non-secure) of SYSRAM + - compatible: following types are supported + "samsung,exynos4210-sysram" : Secure SYSRAM + "samsung,exynos4210-sysram-ns" : Non-secure SYSRAM + - reg: address of SYSRAM bank + + sysram@02020000 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x02020000 0x1000>; + }; + Optional: - firmware node, specifying presence and type of secure firmware: - compatible: only "samsung,secure-firmware" is currently supported diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts b/arch/arm/boot/dts/exynos4210-universal_c210.dts index 63e34b24b04f..cf4158728108 100644 --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts @@ -28,6 +28,15 @@ bootargs = "console=ttySAC2,115200N8 root=/dev/mmcblk0p5 rw rootwait earlyprintk panic=5 maxcpus=1"; }; + sysram@02020000 { + status = "disabled"; + }; + + sysram@02025000 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x02025000 0x1000>; + }; + mct@10050000 { compatible = "none"; }; diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi index cacf6140dd2f..a3f4bba099e6 100644 --- a/arch/arm/boot/dts/exynos4210.dtsi +++ b/arch/arm/boot/dts/exynos4210.dtsi @@ -31,6 +31,16 @@ pinctrl2 = &pinctrl_2; }; + sysram@02020000 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x02020000 0x1000>; + }; + + sysram-ns@0203F000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x0203F000 0x1000>; + }; + pd_lcd1: lcd1-power-domain@10023CA0 { compatible = "samsung,exynos4210-pd"; reg = <0x10023CA0 0x20>; diff --git a/arch/arm/boot/dts/exynos4x12.dtsi b/arch/arm/boot/dts/exynos4x12.dtsi index c4a9306f8529..d57e3120223f 100644 --- a/arch/arm/boot/dts/exynos4x12.dtsi +++ b/arch/arm/boot/dts/exynos4x12.dtsi @@ -37,6 +37,16 @@ interrupts = <2 2>, <3 2>, <18 2>, <19 2>; }; + sysram@02020000 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x02020000 0x1000>; + }; + + sysram-ns@0204F000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x0204F000 0x1000>; + }; + pd_isp: isp-power-domain@10023CA0 { compatible = "samsung,exynos4210-pd"; reg = <0x10023CA0 0x20>; diff --git a/arch/arm/boot/dts/exynos5.dtsi b/arch/arm/boot/dts/exynos5.dtsi index 79d0608d6dcc..c03bd09ec37d 100644 --- a/arch/arm/boot/dts/exynos5.dtsi +++ b/arch/arm/boot/dts/exynos5.dtsi @@ -18,6 +18,11 @@ / { interrupt-parent = <&gic>; + sysram@02020000 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x02020000 0x1000>; + }; + chipid@10000000 { compatible = "samsung,exynos4210-chipid"; reg = <0x10000000 0x100>; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index 37423314a028..bae6c3f253f0 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -72,6 +72,11 @@ }; }; + sysram-ns@0204F000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x0204F000 0x1000>; + }; + pd_gsc: gsc-power-domain@10044000 { compatible = "samsung,exynos4210-pd"; reg = <0x10044000 0x20>; diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index c3a9a66c5767..217376fe1d82 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -110,6 +110,11 @@ }; }; + sysram-ns@02073000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x02073000 0x1000>; + }; + clock: clock-controller@10010000 { compatible = "samsung,exynos5420-clock"; reg = <0x10010000 0x30000>; diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index b32a907d021d..6a5fe18ec9b1 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -114,51 +114,6 @@ static struct map_desc exynos4_iodesc[] __initdata = { }, }; -static struct map_desc exynos4_iodesc0[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos4_iodesc1[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos4210_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM_NS, - .pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos4x12_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM_NS, - .pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos5250_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM_NS, - .pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - static struct map_desc exynos5_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -181,11 +136,6 @@ static struct map_desc exynos5_iodesc[] __initdata = { .length = SZ_4K, .type = MT_DEVICE, }, { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM), - .length = SZ_4K, - .type = MT_DEVICE, - }, { .virtual = (unsigned long)S5P_VA_CMU, .pfn = __phys_to_pfn(EXYNOS5_PA_CMU), .length = 144 * SZ_1K, @@ -268,6 +218,44 @@ static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname, return 1; } +struct __sysram_desc { + char name[32]; + unsigned long addr; +}; + +static struct __sysram_desc sysram_desc[] __initdata = { + { + .name = "samsung,exynos4210-sysram", + .addr = (unsigned long)S5P_VA_SYSRAM, + }, { + .name = "samsung,exynos4210-sysram-ns", + .addr = (unsigned long)S5P_VA_SYSRAM_NS, + }, +}; + +static int __init exynos_fdt_map_sysram(unsigned long node, const char *uname, + int depth, void *data) +{ + struct map_desc iodesc; + __be32 *reg; + unsigned long len; + int i; + + for (i = 0; i < ARRAY_SIZE(sysram_desc); i++) { + if (of_flat_dt_is_compatible(node, sysram_desc[i].name)) { + reg = of_get_flat_dt_prop(node, "reg", &len); + if (!reg || len != (sizeof(unsigned long) * 2)) + return -ENODEV; + iodesc.virtual = sysram_desc[i].addr; + iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); + iodesc.length = be32_to_cpu(reg[1]); + iodesc.type = MT_DEVICE; + iotable_init(&iodesc, 1); + } + } + return 0; +} + /* * exynos_map_io * @@ -280,20 +268,6 @@ static void __init exynos_map_io(void) if (soc_is_exynos5()) iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc)); - - if (soc_is_exynos4210()) { - if (samsung_rev() == EXYNOS4210_REV_0) - iotable_init(exynos4_iodesc0, - ARRAY_SIZE(exynos4_iodesc0)); - else - iotable_init(exynos4_iodesc1, - ARRAY_SIZE(exynos4_iodesc1)); - iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc)); - } - if (soc_is_exynos4212() || soc_is_exynos4412()) - iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc)); - if (soc_is_exynos5250()) - iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc)); } void __init exynos_init_io(void) @@ -306,6 +280,8 @@ void __init exynos_init_io(void) s5p_init_cpu(S5P_VA_CHIPID); exynos_map_io(); + + of_scan_flat_dt(exynos_fdt_map_sysram, NULL); } struct bus_type exynos_subsys = { diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h index 7b046b59d9ec..548269a60634 100644 --- a/arch/arm/mach-exynos/include/mach/map.h +++ b/arch/arm/mach-exynos/include/mach/map.h @@ -23,13 +23,6 @@ #include -#define EXYNOS4_PA_SYSRAM0 0x02025000 -#define EXYNOS4_PA_SYSRAM1 0x02020000 -#define EXYNOS5_PA_SYSRAM 0x02020000 -#define EXYNOS4210_PA_SYSRAM_NS 0x0203F000 -#define EXYNOS4x12_PA_SYSRAM_NS 0x0204F000 -#define EXYNOS5250_PA_SYSRAM_NS 0x0204F000 - #define EXYNOS_PA_CHIPID 0x10000000 #define EXYNOS4_PA_SYSCON 0x10010000