From patchwork Tue Aug 5 08:49:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Edgar E. Iglesias" X-Patchwork-Id: 376621 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 9D28F14007D for ; Tue, 5 Aug 2014 18:54:39 +1000 (EST) Received: from localhost ([::1]:57803 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEaVx-0006fL-UU for incoming@patchwork.ozlabs.org; Tue, 05 Aug 2014 04:54:37 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35233) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEaVT-0005uq-3a for qemu-devel@nongnu.org; Tue, 05 Aug 2014 04:54:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XEaVM-000513-K7 for qemu-devel@nongnu.org; Tue, 05 Aug 2014 04:54:07 -0400 Received: from mail-qg0-x232.google.com ([2607:f8b0:400d:c04::232]:47584) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEaVM-00050z-FR for qemu-devel@nongnu.org; Tue, 05 Aug 2014 04:54:00 -0400 Received: by mail-qg0-f50.google.com with SMTP id q108so635548qgd.37 for ; Tue, 05 Aug 2014 01:54:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=b9fi+fUkqtEobBPDN4HvnfU1Z8r97tIsczAWTxKzECI=; b=eQ1xKhPb+to9fYNoViyLCFbaf/zMQac6l45ghvgU2rtjkzEczWzIMhyarEIhi+HgxG s3auhYH3l1BbjCsrS76z3Z6Dp6j0jO2wtLUvqcjZh89vakBXb8mOHccy7/DEIrJrP6kn 4o8t//ayLiGjuKduL1xdl4cxMTJf7DeLwWspOuhUAZNGo6FrQmO8iL9EP2saAHcW9FUY i7xR/z+wAlgvJNBJDTk/lDVSEkUfrjF+v5PwJoFg5If0+1bu0Ebz55UnctiLQiW3lLSt G0dCQNBfLjeZRe7XU2nkoT9seSc7aEeERnopQsUYln2m2OgN6FfOulHFN/LlsSCSYj56 Qx5w== X-Received: by 10.224.137.135 with SMTP id w7mr3333203qat.52.1407228839958; Tue, 05 Aug 2014 01:53:59 -0700 (PDT) Received: from localhost ([203.126.243.116]) by mx.google.com with ESMTPSA id q68sm1253984qgq.36.2014.08.05.01.53.52 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 05 Aug 2014 01:53:59 -0700 (PDT) From: "Edgar E. Iglesias" To: qemu-devel@nongnu.org, peter.maydell@linaro.org Date: Tue, 5 Aug 2014 18:49:56 +1000 Message-Id: <1407228605-27081-3-git-send-email-edgar.iglesias@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1407228605-27081-1-git-send-email-edgar.iglesias@gmail.com> References: <1407228605-27081-1-git-send-email-edgar.iglesias@gmail.com> X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2607:f8b0:400d:c04::232 Cc: rob.herring@linaro.org, peter.crosthwaite@xilinx.com, aggelerf@ethz.ch, agraf@suse.de, blauwirbel@gmail.com, greg.bellows@linaro.org, pbonzini@redhat.com, alex.bennee@linaro.org, christoffer.dall@linaro.org, rth@twiddle.net Subject: [Qemu-devel] [PATCH v4 02/10] target-arm: Add SCR_EL3 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: "Edgar E. Iglesias" Signed-off-by: Edgar E. Iglesias --- target-arm/cpu.h | 16 +++++++++++++++- target-arm/helper.c | 36 +++++++++++++++++++++++++++++++++--- 2 files changed, 48 insertions(+), 4 deletions(-) diff --git a/target-arm/cpu.h b/target-arm/cpu.h index 8859b94..579570b 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -172,7 +172,6 @@ typedef struct CPUARMState { uint64_t c1_sys; /* System control register. */ uint64_t c1_coproc; /* Coprocessor access register. */ uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */ - uint32_t c1_scr; /* secure config register. */ uint64_t ttbr0_el1; /* MMU translation table base 0. */ uint64_t ttbr1_el1; /* MMU translation table base 1. */ uint64_t c2_control; /* MMU translation table base control. */ @@ -185,6 +184,7 @@ typedef struct CPUARMState { uint32_t pmsav5_data_ap; /* PMSAv5 MPU data access permissions */ uint32_t pmsav5_insn_ap; /* PMSAv5 MPU insn access permissions */ uint64_t hcr_el2; /* Hypervisor configuration register */ + uint32_t scr_el3; /* Secure configuration register. */ uint32_t ifsr_el2; /* Fault status registers. */ uint64_t esr_el[4]; uint32_t c6_region[8]; /* MPU base/size registers. */ @@ -578,6 +578,20 @@ static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) #define HCR_ID (1ULL << 33) #define HCR_MASK ((1ULL << 34) - 1) +#define SCR_NS (1U << 0) +#define SCR_IRQ (1U << 1) +#define SCR_FIQ (1U << 2) +#define SCR_EA (1U << 3) +#define SCR_SMD (1U << 7) +#define SCR_HCE (1U << 8) +#define SCR_SIF (1U << 9) +#define SCR_RW (1U << 10) +#define SCR_ST (1U << 11) +#define SCR_TWI (1U << 12) +#define SCR_TWE (1U << 13) +#define SCR_RES1_MASK (3U << 4) +#define SCR_MASK (0x3fff & ~SCR_RES1_MASK) + /* Return the current FPSCR value. */ uint32_t vfp_get_fpscr(CPUARMState *env); void vfp_set_fpscr(CPUARMState *env, uint32_t val); diff --git a/target-arm/helper.c b/target-arm/helper.c index 1021812..a767380 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -792,9 +792,6 @@ static const ARMCPRegInfo v7_cp_reginfo[] = { .access = PL1_RW, .writefn = vbar_write, .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[1]), .resetvalue = 0 }, - { .name = "SCR", .cp = 15, .crn = 1, .crm = 1, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c1_scr), - .resetvalue = 0, }, { .name = "CCSIDR", .state = ARM_CP_STATE_BOTH, .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0, .access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_MIGRATE }, @@ -2186,6 +2183,31 @@ static const ARMCPRegInfo v8_el2_cp_reginfo[] = { REGINFO_SENTINEL }; +static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) +{ + uint32_t valid_mask = SCR_MASK; + + if (!arm_feature(env, ARM_FEATURE_EL2)) { + valid_mask &= ~SCR_HCE; + + /* On ARMv7, SMD (or SCD as it is called in v7) is only + * supported if EL2 exists. The bit is UNK/SBZP when + * EL2 is unavailable. In QEMU ARMv7, we force it to always zero + * when EL2 is unavailable. + */ + if (arm_feature(env, ARM_FEATURE_V7)) { + valid_mask &= ~SCR_SMD; + } + } + + /* Set RES1 bits. */ + value |= SCR_RES1_MASK; + + /* Clear RES0 bits. */ + value &= valid_mask; + raw_write(env, ri, value); +} + static const ARMCPRegInfo v8_el3_cp_reginfo[] = { { .name = "ELR_EL3", .state = ARM_CP_STATE_AA64, .type = ARM_CP_NO_MIGRATE, @@ -2208,6 +2230,14 @@ static const ARMCPRegInfo v8_el3_cp_reginfo[] = { .access = PL3_RW, .writefn = vbar_write, .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[3]), .resetvalue = 0 }, + { .name = "SCR", .cp = 15, .crn = 1, .crm = 1, .opc1 = 0, .opc2 = 0, + .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.scr_el3), + .resetvalue = 0, }, + { .name = "SCR_EL3", .state = ARM_CP_STATE_AA64, + .type = ARM_CP_NO_MIGRATE, + .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 0, + .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.scr_el3), + .writefn = scr_write }, REGINFO_SENTINEL };