From patchwork Tue Oct 22 16:13:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 11204783 X-Patchwork-Delegate: paulburton@kernel.org Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8089D13B1 for ; Tue, 22 Oct 2019 16:13:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6961920B7C for ; Tue, 22 Oct 2019 16:13:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389283AbfJVQNY (ORCPT ); Tue, 22 Oct 2019 12:13:24 -0400 Received: from mx2.suse.de ([195.135.220.15]:59826 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732216AbfJVQNX (ORCPT ); Tue, 22 Oct 2019 12:13:23 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 6FFBBB388; Tue, 22 Oct 2019 16:13:21 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , Paul Burton , James Hogan , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/5] MIPS: SGI-IP27: reduce ARC usage to a minimum Date: Tue, 22 Oct 2019 18:13:15 +0200 Message-Id: <20191022161315.4194-5-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20191022161315.4194-1-tbogendoerfer@suse.de> References: <20191022161315.4194-1-tbogendoerfer@suse.de> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org IP27 uses ARC prom only for parsing prom arguments and has a hack for IP27 to make the ARC code behave. By introducing config symbol ARC_CMDLINE_ONLY IP27 only drags in ARC cmdline parsing and does everything else in IP27 specific code. Signed-off-by: Thomas Bogendoerfer --- arch/mips/Kconfig | 4 ++++ arch/mips/fw/arc/Makefile | 4 ++++ arch/mips/fw/arc/identify.c | 10 ---------- arch/mips/sgi-ip27/ip27-init.c | 14 ++++++++++++++ 4 files changed, 22 insertions(+), 10 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 2ef3129cc4ad..376d0ec0d1d6 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -674,6 +674,7 @@ config SGI_IP27 select ARCH_SPARSEMEM_ENABLE select FW_ARC select FW_ARC64 + select ARC_CMDLINE_ONLY select BOOT_ELF64 select DEFAULT_SGI_PARTITION select SYS_HAS_EARLY_PRINTK @@ -1377,6 +1378,9 @@ config MIPS_L1_CACHE_SHIFT config HAVE_STD_PC_SERIAL_PORT bool +config ARC_CMDLINE_ONLY + bool + config ARC_CONSOLE bool "ARC console support" depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) diff --git a/arch/mips/fw/arc/Makefile b/arch/mips/fw/arc/Makefile index 3cc82d7fe548..64d685efcc77 100644 --- a/arch/mips/fw/arc/Makefile +++ b/arch/mips/fw/arc/Makefile @@ -3,8 +3,12 @@ # Makefile for the ARC prom monitor library routines under Linux. # +ifdef CONFIG_ARC_CMDLINE_ONLY +lib-y += cmdline.o +else lib-y += cmdline.o env.o file.o identify.o init.o \ misc.o +endif lib-$(CONFIG_ARC_MEMORY) += memory.o lib-$(CONFIG_ARC_CONSOLE) += arc_con.o diff --git a/arch/mips/fw/arc/identify.c b/arch/mips/fw/arc/identify.c index 7530c7b2fd39..5527e0f54079 100644 --- a/arch/mips/fw/arc/identify.c +++ b/arch/mips/fw/arc/identify.c @@ -31,10 +31,6 @@ static struct smatch mach_table[] = { .arcname = "SGI-IP22", .liname = "SGI Indy", .flags = PROM_FLAG_ARCS, - }, { - .arcname = "SGI-IP27", - .liname = "SGI Origin", - .flags = PROM_FLAG_ARCS, }, { .arcname = "SGI-IP28", .liname = "SGI IP28", @@ -103,13 +99,7 @@ void __init prom_identify_arch(void) */ p = ArcGetChild(PROM_NULL_COMPONENT); if (p == NULL) { -#ifdef CONFIG_SGI_IP27 - /* IP27 PROM misbehaves, seems to not implement ARC - GetChild(). So we just assume it's an IP27. */ - iname = "SGI-IP27"; -#else iname = "Unknown"; -#endif } else iname = (char *) (long) p->iname; diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c index d160fb219d6d..971aa0d5d534 100644 --- a/arch/mips/sgi-ip27/ip27-init.c +++ b/arch/mips/sgi-ip27/ip27-init.c @@ -13,9 +13,11 @@ #include #include #include +#include #include #include #include +#include #include #include #include @@ -160,3 +162,15 @@ void __init plat_mem_setup(void) ioport_resource.end = ~0UL; set_io_port_base(IO_BASE); } + +const char *get_system_type(void) +{ + return "SGI Origin"; +} + +void __init prom_init(void) +{ + prom_init_cmdline(fw_arg0, (LONG *)fw_arg1); + prom_meminit(); +} +