From patchwork Fri Feb 3 18:30:22 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 139442 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id C045C104792 for ; Sat, 4 Feb 2012 05:42:51 +1100 (EST) Received: from localhost ([::1]:58769 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RtNun-0000fx-0B for incoming@patchwork.ozlabs.org; Fri, 03 Feb 2012 13:31:17 -0500 Received: from eggs.gnu.org ([140.186.70.92]:56834) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RtNu7-0007eE-Sp for qemu-devel@nongnu.org; Fri, 03 Feb 2012 13:30:40 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RtNu6-00078m-Lc for qemu-devel@nongnu.org; Fri, 03 Feb 2012 13:30:35 -0500 Received: from mnementh.archaic.org.uk ([81.2.115.146]:42608) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RtNu6-00076x-CN for qemu-devel@nongnu.org; Fri, 03 Feb 2012 13:30:34 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.72) (envelope-from ) id 1RtNu0-0005i2-BZ; Fri, 03 Feb 2012 18:30:28 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Date: Fri, 3 Feb 2012 18:30:22 +0000 Message-Id: <1328293828-21921-2-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1328293828-21921-1-git-send-email-peter.maydell@linaro.org> References: <1328293828-21921-1-git-send-email-peter.maydell@linaro.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 81.2.115.146 Cc: =?UTF-8?q?Andreas=20F=C3=A4rber?= , patches@linaro.org Subject: [Qemu-devel] [PATCH v4 1/7] hw/a15mpcore.c: Add Cortex-A15 private peripheral model 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 Add a model of the Cortex-A15 memory mapped private peripheral space. This is fairly simple because the only memory mapped bit of the A15 is the GIC. Note that we don't currently model a VGIC and therefore don't map the VGIC related bits of the GIC. Signed-off-by: Peter Maydell --- Makefile.target | 2 +- hw/a15mpcore.c | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 104 insertions(+), 1 deletions(-) create mode 100644 hw/a15mpcore.c diff --git a/Makefile.target b/Makefile.target index 68481a3..9deb2f2 100644 --- a/Makefile.target +++ b/Makefile.target @@ -339,7 +339,7 @@ obj-arm-y += arm_boot.o pl011.o pl031.o pl050.o pl080.o pl110.o pl181.o pl190.o obj-arm-y += versatile_pci.o obj-arm-y += realview_gic.o realview.o arm_sysctl.o arm11mpcore.o a9mpcore.o obj-arm-y += arm_l2x0.o -obj-arm-y += arm_mptimer.o +obj-arm-y += arm_mptimer.o a15mpcore.o obj-arm-y += armv7m.o armv7m_nvic.o stellaris.o pl022.o stellaris_enet.o obj-arm-y += highbank.o obj-arm-y += pl061.o diff --git a/hw/a15mpcore.c b/hw/a15mpcore.c new file mode 100644 index 0000000..b345afc --- /dev/null +++ b/hw/a15mpcore.c @@ -0,0 +1,103 @@ +/* + * Cortex-A15MPCore internal peripheral emulation. + * + * Copyright (c) 2012 Linaro Limited. + * Written by Peter Maydell. + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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, see . + */ + +#include "sysbus.h" + +/* Configuration for arm_gic.c: + * max number of CPUs, how to ID current CPU + */ +#define NCPU 4 + +static inline int gic_get_current_cpu(void) +{ + return cpu_single_env->cpu_index; +} + +#include "arm_gic.c" + +/* A15MP private memory region. */ + +typedef struct A15MPPrivState { + gic_state gic; + uint32_t num_cpu; + uint32_t num_irq; + MemoryRegion container; +} A15MPPrivState; + +static int a15mp_priv_init(SysBusDevice *dev) +{ + A15MPPrivState *s = FROM_SYSBUSGIC(A15MPPrivState, dev); + + if (s->num_cpu > NCPU) { + hw_error("a15mp_priv_init: num-cpu may not be more than %d\n", NCPU); + } + + gic_init(&s->gic, s->num_cpu, s->num_irq); + + /* Memory map (addresses are offsets from PERIPHBASE): + * 0x0000-0x0fff -- reserved + * 0x1000-0x1fff -- GIC Distributor + * 0x2000-0x2fff -- GIC CPU interface + * 0x4000-0x4fff -- GIC virtual interface control (not modelled) + * 0x5000-0x5fff -- GIC virtual interface control (not modelled) + * 0x6000-0x7fff -- GIC virtual CPU interface (not modelled) + */ + memory_region_init(&s->container, "a15mp-priv-container", 0x8000); + memory_region_add_subregion(&s->container, 0x1000, &s->gic.iomem); + memory_region_add_subregion(&s->container, 0x2000, &s->gic.cpuiomem[0]); + + sysbus_init_mmio(dev, &s->container); + return 0; +} + +static Property a15mp_priv_properties[] = { + DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1), + /* The Cortex-A15MP may have anything from 0 to 224 external interrupt + * IRQ lines (with another 32 internal). We default to 64+32, which + * is the number provided by the Cortex-A15MP test chip in the + * Versatile Express A15 development board. + * Other boards may differ and should set this property appropriately. + */ + DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 96), + DEFINE_PROP_END_OF_LIST(), +}; + +static void a15mp_priv_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + k->init = a15mp_priv_init; + dc->props = a15mp_priv_properties; + /* We currently have no savable state outside the common GIC state */ +} + +static TypeInfo a15mp_priv_info = { + .name = "a15mpcore_priv", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(A15MPPrivState), + .class_init = a15mp_priv_class_init, +}; + +static void a15mp_register_devices(void) +{ + type_register_static(&a15mp_priv_info); +} + +device_init(a15mp_register_devices)