From patchwork Tue Aug 29 08:38:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Binbin Zhou X-Patchwork-Id: 9926911 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3B2FC6022E for ; Tue, 29 Aug 2017 08:46:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2966428898 for ; Tue, 29 Aug 2017 08:46:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1C2912889D; Tue, 29 Aug 2017 08:46:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AA5C928898 for ; Tue, 29 Aug 2017 08:46:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751398AbdH2Iqk (ORCPT ); Tue, 29 Aug 2017 04:46:40 -0400 Received: from SMTPBG181.QQ.COM ([119.147.193.88]:42654 "EHLO smtpbg181.qq.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751831AbdH2Iqj (ORCPT ); Tue, 29 Aug 2017 04:46:39 -0400 X-Greylist: delayed 463 seconds by postgrey-1.27 at vger.kernel.org; Tue, 29 Aug 2017 04:46:38 EDT X-QQ-mid: bizesmtp5t1503995873tnn81yn48 Received: from software.domain.org (unknown [222.92.8.142]) by esmtp4.qq.com (ESMTP) with id ; Tue, 29 Aug 2017 16:37:51 +0800 (CST) X-QQ-SSF: 01100000008000F0FJF1B00A0000000 X-QQ-FEAT: bYqovMVes/x8HTkYfzSvLLm+LQA13MbfUA1fuAp7wXLuEbnJ35i5/06Qko7U2 0gLainXWmkooRX1oEMXE5e7T77FheynCZCgQnwJojn6q6cJ2leOQQEVLmOKUr6IZUae1eVo qcNussd3SDuHlrENt9LTdis7TJLoJ4jM03HivUUMry1JfG8SAtU+PWTB6+FP11R/QvwpWFo nsOOow2DvPl77q/78GkkpwkgKjN31iXIPYY+mgmMQLS5/CbZzcXA1VUU26BSEiJ7uVVBpEe WkXVnSK9jcOp+mYHVbU/3Z4uwc/4E9vnQFzXplZAnQ5WegK9+DrzP3LhY= X-QQ-GoodBg: 0 From: Binbin Zhou To: Ralf Baechle , James Hogan Cc: John Crispin , "Steven J . Hill" , Aurelien Jarno , Fuxin Zhang , Zhangjin Wu , Kelvin Cheung , Yang Ling , =?UTF-8?q?=E8=B0=A2=E8=87=B4=E9=82=A6?= , Stephen Boyd , Michael Turquette , linux-mips@linux-mips.org, linux-clk@vger.kernel.org, Binbin Zhou , HuaCai Chen Subject: [PATCH RESEND v8 3/9] MIPS: Loongson: Add basic Loongson-1A CPU support Date: Tue, 29 Aug 2017 16:38:40 +0800 Message-Id: <1503995926-17125-4-git-send-email-zhoubb@lemote.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1503995926-17125-1-git-send-email-zhoubb@lemote.com> References: <1503995926-17125-1-git-send-email-zhoubb@lemote.com> X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:lemote.com:qybgweb:qybgweb15 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The Loongson-1A CPU is similar with Loongson-1B/1C, which is a 32-bit SoC. It implements the MIPS32 release 2 instruction set. It's a cost-effective single chip system based on LS232 processor core, and is applicable to fields such as industrial control. Signed-off-by: Binbin Zhou Signed-off-by: HuaCai Chen --- arch/mips/include/asm/cpu-type.h | 3 ++- arch/mips/kernel/cpu-probe.c | 4 +++- arch/mips/loongson32/Platform | 1 + arch/mips/loongson32/common/setup.c | 4 +++- arch/mips/mm/c-r4k.c | 10 ++++++++++ 5 files changed, 19 insertions(+), 3 deletions(-) diff --git a/arch/mips/include/asm/cpu-type.h b/arch/mips/include/asm/cpu-type.h index 175fe56..2202be8 100644 --- a/arch/mips/include/asm/cpu-type.h +++ b/arch/mips/include/asm/cpu-type.h @@ -24,7 +24,8 @@ static inline int __pure __get_cpu_type(const int cpu_type) case CPU_LOONGSON3: #endif -#if defined(CONFIG_SYS_HAS_CPU_LOONGSON1B) || \ +#if defined(CONFIG_SYS_HAS_CPU_LOONGSON1A) || \ + defined(CONFIG_SYS_HAS_CPU_LOONGSON1B) || \ defined(CONFIG_SYS_HAS_CPU_LOONGSON1C) case CPU_LOONGSON1: #endif diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 25f729c..c23fa20 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1514,7 +1514,9 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) switch (c->processor_id & PRID_REV_MASK) { case PRID_REV_LOONGSON1ABC: -#ifdef CONFIG_CPU_LOONGSON1B +#if defined(CONFIG_LOONGSON1_LS1A) + __cpu_name[cpu] = "Loongson 1A"; +#elif defined(CONFIG_CPU_LOONGSON1B) __cpu_name[cpu] = "Loongson 1B"; #endif break; diff --git a/arch/mips/loongson32/Platform b/arch/mips/loongson32/Platform index ffe01c6..a9e0fa7 100644 --- a/arch/mips/loongson32/Platform +++ b/arch/mips/loongson32/Platform @@ -4,5 +4,6 @@ cflags-$(CONFIG_CPU_LOONGSON1) += \ platform-$(CONFIG_MACH_LOONGSON32) += loongson32/ cflags-$(CONFIG_MACH_LOONGSON32) += -I$(srctree)/arch/mips/include/asm/mach-loongson32 +load-$(CONFIG_LOONGSON1_LS1A) += 0xffffffff80200000 load-$(CONFIG_LOONGSON1_LS1B) += 0xffffffff80100000 load-$(CONFIG_LOONGSON1_LS1C) += 0xffffffff80100000 diff --git a/arch/mips/loongson32/common/setup.c b/arch/mips/loongson32/common/setup.c index c8e8b3e..1c3324a 100644 --- a/arch/mips/loongson32/common/setup.c +++ b/arch/mips/loongson32/common/setup.c @@ -22,7 +22,9 @@ const char *get_system_type(void) switch (processor_id & PRID_REV_MASK) { case PRID_REV_LOONGSON1ABC: -#if defined(CONFIG_LOONGSON1_LS1B) +#if defined(CONFIG_LOONGSON1_LS1A) + return "LOONGSON LS1A"; +#elif defined(CONFIG_LOONGSON1_LS1B) return "LOONGSON LS1B"; #elif defined(CONFIG_LOONGSON1_LS1C) return "LOONGSON LS1C"; diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 81d6a15..567beef 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1366,6 +1366,16 @@ static void probe_pcache(void) c->options |= MIPS_CPU_PREFETCH; break; + case CPU_LOONGSON1: + if (read_c0_config7() & MIPS_CONF7_AR) { + /* + * effectively physically indexed dcache, + * thus no virtual aliases. + */ + c->dcache.flags |= MIPS_CACHE_PINDEX; + break; + } + default: if (!(config & MIPS_CONF_M)) panic("Don't know how to probe P-caches on this cpu.");