From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44689) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ePsrc-0004b2-7x for qemu-devel@nongnu.org; Fri, 15 Dec 2017 11:29:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ePsrY-0007UR-RG for qemu-devel@nongnu.org; Fri, 15 Dec 2017 11:29:32 -0500 Received: from indium.canonical.com ([91.189.90.7]:58682) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ePsrY-0007Sn-LE for qemu-devel@nongnu.org; Fri, 15 Dec 2017 11:29:28 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1ePsrW-0006T0-NK for ; Fri, 15 Dec 2017 16:29:26 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id B8D2E2E8197 for ; Fri, 15 Dec 2017 16:29:24 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 15 Dec 2017 16:15:54 -0000 From: Thomas Huth <696094@bugs.launchpad.net> Reply-To: Bug 696094 <696094@bugs.launchpad.net> Sender: bounces@canonical.com References: <20101231203043.711.86363.malonedeb@potassium.ubuntu.com> Message-Id: <151335455625.26681.16834897930060175035.launchpad@wampee.canonical.com> Errors-To: bounces@canonical.com Subject: [Qemu-devel] [Bug 696094] Re: TI Stellaris lm3s811evb (ARM Cortex-M3) : Systick interrupt not working List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org ** Changed in: qemu Status: Fix Committed =3D> Fix Released -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/696094 Title: TI Stellaris lm3s811evb (ARM Cortex-M3) : Systick interrupt not working Status in QEMU: Fix Released Bug description: I've tried to create a small project that uses the CMSIS as base library. The problem is that the SysTick_interrupt_handler() doesn't get executed = when the systick event is detected in QEMU. Furthermore, it seems asif QEMU= gets stuck in an endless loop. QEMU doesn't respond to Ctrl-C on the comma= nd line and the GDB session also stalls. 'kill -9' is the only way to stop = QEMU. It seems asif the initialisation of the NVIC works fine. I've traced the = function calls in QEMU as follows: stellaris.c: stellaris_init() - Perform generic armv7 init: armv7m_init() armv7m.c: armv7m_init() - Create and init the nvic: nvic =3D qdev_create(NULL, "armv7m_nvic"); env->nvic =3D nvic; qdev_init_nofail(nvic); - Configure the programmable interrupt control= ler: Call: arm_pic_init_cpu() = qemu_allocate_irqs(arm_pic_cpu_ha= ndler) - Initialise 64 interrupt structures. The following call sequence is observed when the systick event occur: armv7m_nvic.c: systick_timer_tick(): set pending interrupt armv7m_nvic.c: armv7m_nvic_set_pending() for irq:15 arm_gic.c: gic_set_pending_private(): GIC_SET_PENDING(15,) arm_gic.c: gic_update() - Raise IRQ with qemu_set_irq() irq.c: eqmu_set_irq() - Call the irq->handler = -- I assume the irq handler is 'arm_pic_cp= u_handler()', since that was passed as the parameter = when qemu_allocate_irqs() was called in ... arm_pic.c: arm_pic_cpu_handler() - After evaluation, call cpu_i= nterrupt() exec.c: cpu_interrupt() is called. = The tools that were used during the testing of this project: GCC: Codesourcery ARM eabi 2010q3 QEMU: Checked out on 31/12/2010 - Last commit: 0fcec41eec0432c77645b4a4= 07d3a3e030c4abc4 The project files are attached, for reproducing of the errors. Note: The CMSIS wants to perform byte accesses to the NVIC. For the Co= rtex-M3, unaligned 8 bit and 16 bit accesses are allowed. The current QEMU = implementation doesn't yet cater for it. As a work around, updated versions= of arm_gic.c armv7m_nvic.h armv7m_nvic.c is also included. Launch project with: go_gdb.sh Attach debugger with: arm-none-eabi-gdbtui --command=3DgdbCommands_tui (s =3D step, n =3D next, c =3D continue, Ctrl-C =3D stop, print to look at variable contents) To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/696094/+subscriptions