From patchwork Sun Sep 4 13:54:12 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Santosh Shilimkar X-Patchwork-Id: 1123682 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p84Du5Rf027190 for ; Sun, 4 Sep 2011 13:56:06 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754577Ab1IDN4F (ORCPT ); Sun, 4 Sep 2011 09:56:05 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:38035 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754584Ab1IDN4D (ORCPT ); Sun, 4 Sep 2011 09:56:03 -0400 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id p84DttkZ001892 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 4 Sep 2011 08:55:57 -0500 Received: from dbde70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id p84DtsPx010678; Sun, 4 Sep 2011 19:25:54 +0530 (IST) Received: from dbdp31.itg.ti.com (172.24.170.98) by DBDE70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 8.3.106.1; Sun, 4 Sep 2011 19:25:54 +0530 Received: from ula0393909.apr.dhcp.ti.com (ula0393909.apr.dhcp.ti.com [172.24.137.49]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id p84DtBMt022822; Sun, 4 Sep 2011 19:25:54 +0530 (IST) From: Santosh Shilimkar To: CC: , , , , Santosh Shilimkar Subject: [PATCH 11/25] OMAP: Add Secure HAL and monitor mode API infrastructure. Date: Sun, 4 Sep 2011 19:24:12 +0530 Message-ID: <1315144466-9395-12-git-send-email-santosh.shilimkar@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1315144466-9395-1-git-send-email-santosh.shilimkar@ti.com> References: <1315144466-9395-1-git-send-email-santosh.shilimkar@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Sun, 04 Sep 2011 13:56:06 +0000 (UTC) On OMAP secure/emulation devices, certain APIs are exported by secure code. Add an infrastructure so that relevant operations on secure devices can be implemented using it. While at this, omap44xx-smc.S to omap-smc.S since the common APIs can be used on other OMAP's too. Signed-off-by: Santosh Shilimkar --- arch/arm/mach-omap2/Makefile | 11 ++-- arch/arm/mach-omap2/include/mach/omap-secure.h | 40 +++++++++++++++ arch/arm/mach-omap2/omap-secure.c | 52 ++++++++++++++++++++ arch/arm/mach-omap2/{omap44xx-smc.S => omap-smc.S} | 23 +++++++++ 4 files changed, 121 insertions(+), 5 deletions(-) create mode 100644 arch/arm/mach-omap2/include/mach/omap-secure.h create mode 100644 arch/arm/mach-omap2/omap-secure.c rename arch/arm/mach-omap2/{omap44xx-smc.S => omap-smc.S} (70%) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 42e4613..c53a8e8 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -11,10 +11,11 @@ hwmod-common = omap_hwmod.o \ omap_hwmod_common_data.o clock-common = clock.o clock_common_data.o \ clkt_dpll.o clkt_clksel.o +secure-common = omap-smc.o omap-secure.o -obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(hwmod-common) -obj-$(CONFIG_ARCH_OMAP3) += $(omap-2-3-common) $(hwmod-common) -obj-$(CONFIG_ARCH_OMAP4) += prm44xx.o $(hwmod-common) +obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(hwmod-common) $(secure-common) +obj-$(CONFIG_ARCH_OMAP3) += $(omap-2-3-common) $(hwmod-common) $(secure-common) +obj-$(CONFIG_ARCH_OMAP4) += prm44xx.o $(hwmod-common) $(secure-common) obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o @@ -24,11 +25,11 @@ obj-$(CONFIG_TWL4030_CORE) += omap_twl.o obj-$(CONFIG_SMP) += omap-smp.o omap-headsmp.o obj-$(CONFIG_LOCAL_TIMERS) += timer-mpu.o obj-$(CONFIG_HOTPLUG_CPU) += omap-hotplug.o -obj-$(CONFIG_ARCH_OMAP4) += omap44xx-smc.o omap4-common.o +obj-$(CONFIG_ARCH_OMAP4) += omap4-common.o plus_sec := $(call as-instr,.arch_extension sec,+sec) AFLAGS_omap-headsmp.o :=-Wa,-march=armv7-a$(plus_sec) -AFLAGS_omap44xx-smc.o :=-Wa,-march=armv7-a$(plus_sec) +AFLAGS_omap-smc.o :=-Wa,-march=armv7-a$(plus_sec) # Functions loaded to SRAM obj-$(CONFIG_SOC_OMAP2420) += sram242x.o diff --git a/arch/arm/mach-omap2/include/mach/omap-secure.h b/arch/arm/mach-omap2/include/mach/omap-secure.h new file mode 100644 index 0000000..26e7bcc --- /dev/null +++ b/arch/arm/mach-omap2/include/mach/omap-secure.h @@ -0,0 +1,40 @@ +/* + * omap-secure.h: OMAP Secure infrastructure header. + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Santosh Shilimkar + * + * 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. + */ +#ifndef OMAP_ARCH_OMAP_SECURE_H +#define OMAP_ARCH_OMAP_SECURE_H + +/* Monitor error code */ +#define API_HAL_RET_VALUE_NS2S_CONVERSION_ERROR 0xFFFFFFFE +#define API_HAL_RET_VALUE_SERVICE_UNKNWON 0xFFFFFFFF + +/* HAL API error codes */ +#define API_HAL_RET_VALUE_OK 0x00 +#define API_HAL_RET_VALUE_FAIL 0x01 + +/* Secure HAL API flags */ +#define FLAG_START_CRITICAL 0x4 +#define FLAG_IRQFIQ_MASK 0x3 +#define FLAG_IRQ_ENABLE 0x2 +#define FLAG_FIQ_ENABLE 0x1 +#define NO_FLAG 0x0 + + +/* Secure low power HAL API index */ +#define OMAP4_HAL_SAVESECURERAM_INDEX 0x1a +#define OMAP4_HAL_SAVEHW_INDEX 0x1b +#define OMAP4_HAL_SAVEALL_INDEX 0x1c +#define OMAP4_HAL_SAVEGIC_INDEX 0x1d + +extern u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, + u32 arg1, u32 arg2, u32 arg3, u32 arg4); +extern u32 omap_smc2(u32 id, u32 falg, u32 pargs); + +#endif /* OMAP_ARCH_OMAP_SECURE_H */ diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c new file mode 100644 index 0000000..e5a606e --- /dev/null +++ b/arch/arm/mach-omap2/omap-secure.c @@ -0,0 +1,52 @@ +/* + * OMAP Secure API infrastructure. + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Santosh Shilimkar + * + * + * 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 +#include +#include + +#include + +#include + +/** + * omap_sec_dispatcher: Routine to dispatch low power secure + * service routines + * @idx: The HAL API index + * @flag: The flag indicating criticality of operation + * @nargs: Number of valid arguments out of four. + * @arg1, arg2, arg3 args4: Parameters passed to secure API + * + * Return the non-zero error value on failure. + */ +u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2, + u32 arg3, u32 arg4) +{ + u32 ret; + u32 param[5]; + + param[0] = nargs; + param[1] = arg1; + param[2] = arg2; + param[3] = arg3; + param[4] = arg4; + + /* + * Secure API needs physical address + * pointer for the parameters + */ + flush_cache_all(); + outer_clean_range(__pa(param), __pa(param + 5)); + ret = omap_smc2(idx, flag, __pa(param)); + + return ret; +} diff --git a/arch/arm/mach-omap2/omap44xx-smc.S b/arch/arm/mach-omap2/omap-smc.S similarity index 70% rename from arch/arm/mach-omap2/omap44xx-smc.S rename to arch/arm/mach-omap2/omap-smc.S index e69d37d..f6441c1 100644 --- a/arch/arm/mach-omap2/omap44xx-smc.S +++ b/arch/arm/mach-omap2/omap-smc.S @@ -31,6 +31,29 @@ ENTRY(omap_smc1) ldmfd sp!, {r2-r12, pc} ENDPROC(omap_smc1) +/** + * u32 omap_smc2(u32 id, u32 falg, u32 pargs) + * Low level common routine for secure HAL and PPA APIs. + * @id: Application ID of HAL APIs + * @flag: Flag to indicate the criticality of operation + * @pargs: Physical address of parameter list starting + * with number of parametrs + */ +ENTRY(omap_smc2) + stmfd sp!, {r4-r12, lr} + mov r3, r2 + mov r2, r1 + mov r1, #0x0 @ Process ID + mov r6, #0xff + mov r12, #0x00 @ Secure Service ID + mov r7, #0 + mcr p15, 0, r7, c7, c5, 6 + dsb + dmb + smc #0 + ldmfd sp!, {r4-r12, pc} +ENDPROC(omap_smc2) + ENTRY(omap_modify_auxcoreboot0) stmfd sp!, {r1-r12, lr} ldr r12, =0x104