From patchwork Fri Oct 19 22:07:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukas Auer X-Patchwork-Id: 987070 X-Patchwork-Delegate: uboot@andestech.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=aisec.fraunhofer.de Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 42cL1M1q7cz9t0P for ; Sat, 20 Oct 2018 09:19:19 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 0405FC21CB1; Fri, 19 Oct 2018 22:16:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id A9526C21E4F; Fri, 19 Oct 2018 22:13:29 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 0DD50C21DD4; Fri, 19 Oct 2018 22:10:14 +0000 (UTC) Received: from mail-edgeS23.fraunhofer.de (mail-edges23.fraunhofer.de [153.97.7.23]) by lists.denx.de (Postfix) with ESMTPS id 73D96C21DFD for ; Fri, 19 Oct 2018 22:10:14 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2EGAABKVcpb/xwBYJlkGgEBAQEBAgEBAQEHAgEBAQGBUQUBAQEBCwGCBIFTOowNX4s7mRyBeg2EbAKFCSE0DQ0BAwEBAgEBAgICaSiFPAZwCRBRPRoGDgWDIYIBAah/ihoJAYcihCOBWD+BEAGCZIV5hQ0CnkEHAoENgQEEjk8LF4krhn6WUoFDOYFVMxokgzuQWW0BjCQBAQ X-IPAS-Result: A2EGAABKVcpb/xwBYJlkGgEBAQEBAgEBAQEHAgEBAQGBUQUBAQEBCwGCBIFTOowNX4s7mRyBeg2EbAKFCSE0DQ0BAwEBAgEBAgICaSiFPAZwCRBRPRoGDgWDIYIBAah/ihoJAYcihCOBWD+BEAGCZIV5hQ0CnkEHAoENgQEEjk8LF4krhn6WUoFDOYFVMxokgzuQWW0BjCQBAQ X-IronPort-AV: E=Sophos;i="5.54,401,1534802400"; d="scan'208";a="6664191" Received: from mail-mtaka28.fraunhofer.de ([153.96.1.28]) by mail-edgeS23.fraunhofer.de with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Oct 2018 00:10:14 +0200 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0AjAAAiVcpb/xBhWMBkHAEBAQQBAQcEAQGBUQcBAQsBhBGMDV+kV4F6DYRsAoUpNA0NAQMBAQIBAQJtKIU7BnAJEFE9GgYOBYMhggKof4oaCQGHIoV7P4EQAYJkhXmFDQKeQQcCgQ2BAQSOTwsXiSuGfpZSgUM4gVUzGiSDO5BZPTABjCQBAQ X-IronPort-AV: E=Sophos;i="5.54,401,1534802400"; d="scan'208";a="18910099" Received: from fgdemucivp01ltm.xch.fraunhofer.de (HELO FGDEMUCIMP11EXC.ads.fraunhofer.de) ([192.88.97.16]) by mail-mtaKA28.fraunhofer.de with ESMTP/TLS/AES256-SHA; 20 Oct 2018 00:10:14 +0200 Received: from localhost.de (10.80.233.50) by FGDEMUCIMP11EXC.ads.fraunhofer.de (10.80.232.42) with Microsoft SMTP Server (TLS) id 14.3.408.0; Sat, 20 Oct 2018 00:11:32 +0200 From: Lukas Auer To: Date: Sat, 20 Oct 2018 00:07:21 +0200 Message-ID: <20181019220743.15020-9-lukas.auer@aisec.fraunhofer.de> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20181019220743.15020-1-lukas.auer@aisec.fraunhofer.de> References: <20181019220743.15020-1-lukas.auer@aisec.fraunhofer.de> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-11.0.0.4179-8.200.1013-24166.002 X-TM-AS-Result: No--3.370600-8.000000-31 X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No Subject: [U-Boot] [PATCH 08/30] riscv: add Kconfig entries for the code model X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" RISC-V has two code models, medium low (medlow) and medium any (medany). Medlow limits addressable memory to a single 2 GiB range between the absolute addresses -2 GiB and +2 GiB. Medany limits addressable memory to any single 2 GiB address range. By default, medlow is selected on 32-bit systems and medany on 64-bit systems. This matches the configuration in Linux. The -mcmodel compiler flag is selected according to the Kconfig configuration. Signed-off-by: Lukas Auer --- arch/riscv/Kconfig | 19 +++++++++++++++++++ arch/riscv/Makefile | 7 +++++-- 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index e15329c35e..ce07fb4b55 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -38,6 +38,25 @@ config ARCH_RV64I endchoice +choice + prompt "Code Model" + default CMODEL_MEDLOW if 32BIT + default CMODEL_MEDANY if 64BIT + +config CMODEL_MEDLOW + bool "medium low code model" + help + U-Boot and its statically defined symbols must lie within a single 2 GiB + address range and must lie between absolute addresses -2 GiB and +2 GiB. + +config CMODEL_MEDANY + bool "medium any code model" + help + U-Boot and its statically defined symbols must be within any single 2 GiB + address range. + +endchoice + config RISCV_ISA_C bool "Emit compressed instructions" default y diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 6fb292d0b4..da6e50bd14 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -13,8 +13,11 @@ riscv-mabi-$(CONFIG_ARCH_RV32I) := ilp32 arch-y := -march=$(riscv-march-y) -mabi=$(riscv-mabi-y) -PLATFORM_CPPFLAGS += $(arch-y) -CFLAGS_EFI += $(arch-y) +cmodel-$(CONFIG_CMODEL_MEDLOW) := -mcmodel=medlow +cmodel-$(CONFIG_CMODEL_MEDANY) := -mcmodel=medany + +PLATFORM_CPPFLAGS += $(arch-y) $(cmodel-y) +CFLAGS_EFI += $(arch-y) $(cmodel-y) head-y := arch/riscv/cpu/start.o