From patchwork Wed Apr 26 09:12:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tinghan Shen X-Patchwork-Id: 13224324 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7C0CFC77B60 for ; Wed, 26 Apr 2023 09:29:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Sved2ovdanRrrox/7/Gv1ao1bZeqVp4cdXuNuqCeMm0=; b=tOyO4HFym6rKAg Rr5bHgWWcJOah+uH1Q+g3egbb3rtBRzuQTDJWvjt7b0y0Ame/zYfqWcgKhujORrzipqYezuOwfytF qH0qn2lG2Ao20KsYp7zv96mfUiSFCtUDxa3ErDdj0hjIumlVbkpzkDvJBG0hzDE+5rzKiz/cWkOgj QMYV7K20xyWPkaDUjEri0oXuhaM7ypWAB0wJG5BsgwAUSz3H1Hg5uhd3ui/fTH6gWP7qLGTDhkTUk MExIFSGF6swHBaoPvpMd+CoCfcatpz3Yubrw/B1wthjaBU2Nu7OjbCVyDKh5hpwi4TzU3TtkvXJhA eW0OyZiZ4pL8yhKYh+rA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1prbSB-003Izc-0j; Wed, 26 Apr 2023 09:28:47 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1prbRz-003Ity-1s; Wed, 26 Apr 2023 09:28:37 +0000 X-UUID: 9b6e92b4e41211ed8687db9d93187ff1-20230426 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=KfZkGXgTkiASVW9o/S/L791BNcO+C+JDRApSEaR3cCM=; b=JXr3+g/iBlMAItj1SQa0C9H5tpMKmDM14yhGBNVsX9AeUCrmSOQhZgfwm3xlLsTYFHqjn3JQmBXXksDrlrSGZuROTgnWSrMIzEV4d5UxSOoIffa0FER8qWcjrVwB4JmN14+/7PT7F4MOedlNe13icldS1DVzdig2/64Ba+/m90A=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22,REQID:946a177b-cf2b-4d65-9163-874b8e02e972,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:120426c,CLOUDID:1a2f4e85-cd9c-45f5-8134-710979e3df0e,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: 9b6e92b4e41211ed8687db9d93187ff1-20230426 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1417959324; Wed, 26 Apr 2023 02:13:28 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 26 Apr 2023 17:12:25 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Wed, 26 Apr 2023 17:12:25 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Matthias Brugger , AngeloGioacchino Del Regno , Tinghan Shen CC: , , , , , Subject: [PATCH v10 08/11] remoteproc: mediatek: Setup MT8195 SCP core 1 SRAM offset Date: Wed, 26 Apr 2023 17:12:08 +0800 Message-ID: <20230426091211.21557-9-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230426091211.21557-1-tinghan.shen@mediatek.com> References: <20230426091211.21557-1-tinghan.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230426_022835_624103_4BEE3CEC X-CRM114-Status: GOOD ( 17.98 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Because MT8195 SCP core 0 and core 1 both boot from head of SRAM and have the same viewpoint of SRAM, SCP has a "core 1 SRAM offset" configuration to control the access destination of SCP core 1 to boot core 1 from different SRAM location. The "core 1 SRAM offset" configuration is composed by a range and an offset. It works like a simple memory mapped mechanism. When SCP core 1 accesses a SRAM address located in the range, the SCP bus adds the configured offset to the address to shift the physical destination address on SCP SRAM. This shifting is transparent to the software running on SCP core 1. Signed-off-by: Tinghan Shen Reviewed-by: AngeloGioacchino Del Regno --- drivers/remoteproc/mtk_common.h | 7 +++++++ drivers/remoteproc/mtk_scp.c | 27 +++++++++++++++++++++++++++ 2 files changed, 34 insertions(+) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index f1a021ad7f66..6861543a0825 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -65,6 +65,13 @@ #define MT8195_CORE1_MEM_ATT_PREDEF 0x20008 #define MT8195_CORE1_WDT_CFG 0x20034 +#define MT8195_SEC_CTRL 0x85000 +#define MT8195_CORE_OFFSET_ENABLE_D BIT(13) +#define MT8195_CORE_OFFSET_ENABLE_I BIT(12) +#define MT8195_L2TCM_OFFSET_RANGE_0_LOW 0x850b0 +#define MT8195_L2TCM_OFFSET_RANGE_0_HIGH 0x850b4 +#define MT8195_L2TCM_OFFSET 0x850d0 + #define SCP_FW_VER_LEN 32 #define SCP_SHARE_BUFFER_SIZE 288 diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index 8232dab655c0..12175ee55844 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -485,6 +485,9 @@ static int mt8195_scp_before_load(struct mtk_scp *scp) static int mt8195_scp_c1_before_load(struct mtk_scp *scp) { + u32 sec_ctrl; + struct mtk_scp *scp_c0; + scp_sram_power_on(scp->reg_base + MT8195_CPU1_SRAM_PD, 0); /* hold SCP in reset while loading FW. */ @@ -493,6 +496,30 @@ static int mt8195_scp_c1_before_load(struct mtk_scp *scp) /* enable MPU for all memory regions */ writel(0xff, scp->reg_base + MT8195_CORE1_MEM_ATT_PREDEF); + /* + * The L2TCM_OFFSET_RANGE and L2TCM_OFFSET shift the destination address + * on SRAM when SCP core 1 accesses SRAM. + * + * This configuration solves booting the SCP core 0 and core 1 from + * different SRAM address because core 0 and core 1 both boot from + * the head of SRAM by default. this must be configured before boot SCP core 1. + * + * The value of L2TCM_OFFSET_RANGE is from the viewpoint of SCP core 1. + * When SCP core 1 issues address within the range (L2TCM_OFFSET_RANGE), + * the address will be added with a fixed offset (L2TCM_OFFSET) on the bus. + * The shift action is tranparent to software. + */ + writel(0, scp->reg_base + MT8195_L2TCM_OFFSET_RANGE_0_LOW); + writel(scp->sram_size, scp->reg_base + MT8195_L2TCM_OFFSET_RANGE_0_HIGH); + + scp_c0 = list_first_entry(scp->cluster, struct mtk_scp, elem); + writel(scp->sram_phys - scp_c0->sram_phys, scp->reg_base + MT8195_L2TCM_OFFSET); + + /* enable SRAM offset when fetching instruction and data */ + sec_ctrl = readl(scp->reg_base + MT8195_SEC_CTRL); + sec_ctrl |= MT8195_CORE_OFFSET_ENABLE_I | MT8195_CORE_OFFSET_ENABLE_D; + writel(sec_ctrl, scp->reg_base + MT8195_SEC_CTRL); + return 0; }