From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 1.mo1.mail-out.ovh.net ([178.32.127.22] helo=mo1.mail-out.ovh.net) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1U5ZFs-0008Kz-C7 for barebox@lists.infradead.org; Wed, 13 Feb 2013 10:08:01 +0000 Received: from mail239.ha.ovh.net (gw6.ovh.net [213.251.189.206]) by mo1.mail-out.ovh.net (Postfix) with SMTP id D5477FFA4A9 for ; Wed, 13 Feb 2013 11:23:16 +0100 (CET) From: Jean-Christophe PLAGNIOL-VILLARD Date: Wed, 13 Feb 2013 11:06:43 +0100 Message-Id: <1360750004-17713-5-git-send-email-plagnioj@jcrosoft.com> In-Reply-To: <1360750004-17713-1-git-send-email-plagnioj@jcrosoft.com> References: <20130213100249.GL19322@game.jcrosoft.org> <1360750004-17713-1-git-send-email-plagnioj@jcrosoft.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 5/6] highbank: add l2x0 support To: barebox@lists.infradead.org Cc: Rob Herring not enable as on qemu this generate a undefined instruction exception Cc: Rob Herring Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- arch/arm/Kconfig | 1 + arch/arm/mach-highbank/Makefile | 1 + arch/arm/mach-highbank/cache-l2x0.c | 45 +++++++++++++++++++++++++++++++++++ arch/arm/mach-highbank/core.h | 2 ++ arch/arm/mach-highbank/smc.S | 27 +++++++++++++++++++++ 5 files changed, 76 insertions(+) create mode 100644 arch/arm/mach-highbank/cache-l2x0.c create mode 100644 arch/arm/mach-highbank/core.h create mode 100644 arch/arm/mach-highbank/smc.S diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 447f4c9..f002910 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -49,6 +49,7 @@ config ARCH_EP93XX config ARCH_HIGHBANK bool "Calxeda Highbank" select HAS_DEBUG_LL + select ARCH_HAS_L2X0 select CPU_V7 select ARM_AMBA select AMBA_SP804 diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile index 3f01cbb..6a7330f 100644 --- a/arch/arm/mach-highbank/Makefile +++ b/arch/arm/mach-highbank/Makefile @@ -1,3 +1,4 @@ obj-y += core.o obj-y += devices.o obj-y += reset.o +obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o smc.o diff --git a/arch/arm/mach-highbank/cache-l2x0.c b/arch/arm/mach-highbank/cache-l2x0.c new file mode 100644 index 0000000..f1e39dc --- /dev/null +++ b/arch/arm/mach-highbank/cache-l2x0.c @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#include +#include +#include + +#include +#include + +#include "core.h" + +static void highbank_l2x0_disable(void) +{ + /* Disable PL310 L2 Cache controller */ + highbank_smc1(0x102, 0x0); +} + +static int highbank_l2x0_init(void) +{ + /* Enable PL310 L2 Cache controller */ + highbank_smc1(0x102, 0x1); + l2x0_init(IOMEM(0xfff12000), 0, ~0UL); + outer_cache.disable = highbank_l2x0_disable; + + return 0; +} +postmmu_initcall(highbank_l2x0_init); diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h new file mode 100644 index 0000000..e3f19b2 --- /dev/null +++ b/arch/arm/mach-highbank/core.h @@ -0,0 +1,2 @@ + +extern void highbank_smc1(int fn, int arg); diff --git a/arch/arm/mach-highbank/smc.S b/arch/arm/mach-highbank/smc.S new file mode 100644 index 0000000..b2118b4 --- /dev/null +++ b/arch/arm/mach-highbank/smc.S @@ -0,0 +1,27 @@ +/* + * Copied from omap44xx-smc.S Copyright (C) 2010 Texas Instruments, Inc. + * Copyright 2012 Calxeda, Inc. + * + * This program is free software,you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + +/* + * This is common routine to manage secure monitor API + * used to modify the PL310 secure registers. + * 'r0' contains the value to be modified and 'r12' contains + * the monitor API number. + * Function signature : void highbank_smc1(u32 fn, u32 arg) + */ + +ENTRY(highbank_smc1) + stmfd sp!, {r4-r11, lr} + mov r12, r0 + mov r0, r1 + dsb + smc #0 + ldmfd sp!, {r4-r11, pc} +ENDPROC(highbank_smc1) -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox