From patchwork Fri Jan 31 00:02:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 11358909 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9A0A4924 for ; Fri, 31 Jan 2020 00:05:39 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7ABA720CC7 for ; Fri, 31 Jan 2020 00:05:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7ABA720CC7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:41234 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ixJoY-0000w7-L7 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 30 Jan 2020 19:05:38 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:58603) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ixJne-0007SD-9R for qemu-devel@nongnu.org; Thu, 30 Jan 2020 19:04:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ixJnc-0002up-A6 for qemu-devel@nongnu.org; Thu, 30 Jan 2020 19:04:42 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:46234 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ixJnb-0001wH-Vf for qemu-devel@nongnu.org; Thu, 30 Jan 2020 19:04:40 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id EEC301A1E05; Fri, 31 Jan 2020 01:03:36 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.14.106]) by mail.rt-rk.com (Postfix) with ESMTPSA id D085B1A1DA4; Fri, 31 Jan 2020 01:03:36 +0100 (CET) From: Aleksandar Markovic To: qemu-devel@nongnu.org Subject: [PATCH rc4 01/29] target/avr: Add basic parameters for new AVR platform Date: Fri, 31 Jan 2020 01:02:45 +0100 Message-Id: <1580428993-4767-2-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580428993-4767-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1580428993-4767-1-git-send-email-aleksandar.markovic@rt-rk.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Henderson , Sarah Harris , Michael Rolnik , Aleksandar Markovic Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Michael Rolnik This includes definitions of various basic parameters needed for integration of a new platform into QEMU. [AM: Split a larger AVR introduction patch into logical units] Suggested-by: Aleksandar Markovic Co-developed-by: Michael Rolnik Co-developed-by: Sarah Harris Signed-off-by: Michael Rolnik Signed-off-by: Sarah Harris Signed-off-by: Michael Rolnik Acked-by: Igor Mammedov Tested-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson Signed-off-by: Aleksandar Markovic --- target/avr/cpu-param.h | 37 ++++++++++++++++++++++++++ target/avr/cpu.h | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 109 insertions(+) create mode 100644 target/avr/cpu-param.h create mode 100644 target/avr/cpu.h diff --git a/target/avr/cpu-param.h b/target/avr/cpu-param.h new file mode 100644 index 0000000..0c29ce4 --- /dev/null +++ b/target/avr/cpu-param.h @@ -0,0 +1,37 @@ +/* + * QEMU AVR CPU + * + * Copyright (c) 2019 Michael Rolnik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + * + */ + +#ifndef AVR_CPU_PARAM_H +#define AVR_CPU_PARAM_H + +#define TARGET_LONG_BITS 32 +/* + * TARGET_PAGE_BITS cannot be more than 8 bits because + * 1. all IO registers occupy [0x0000 .. 0x00ff] address range, and they + * should be implemented as a device and not memory + * 2. SRAM starts at the address 0x0100 + */ +#define TARGET_PAGE_BITS 8 +#define TARGET_PHYS_ADDR_SPACE_BITS 24 +#define TARGET_VIRT_ADDR_SPACE_BITS 24 +#define NB_MMU_MODES 2 + + +#endif diff --git a/target/avr/cpu.h b/target/avr/cpu.h new file mode 100644 index 0000000..d122611 --- /dev/null +++ b/target/avr/cpu.h @@ -0,0 +1,72 @@ +/* + * QEMU AVR CPU + * + * Copyright (c) 2019 Michael Rolnik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + * + */ + +#ifndef QEMU_AVR_CPU_H +#define QEMU_AVR_CPU_H + +#include "cpu-qom.h" +#include "exec/cpu-defs.h" + +#define TCG_GUEST_DEFAULT_MO 0 +#define AVR_CPU_TYPE_SUFFIX "-" TYPE_AVR_CPU +#define AVR_CPU_TYPE_NAME(name) (name AVR_CPU_TYPE_SUFFIX) +#define CPU_RESOLVING_TYPE TYPE_AVR_CPU + +/* + * AVR has two memory spaces, data & code. + * e.g. both have 0 address + * ST/LD instructions access data space + * LPM/SPM and instruction fetching access code memory space + */ +#define MMU_CODE_IDX 0 +#define MMU_DATA_IDX 1 + +#define EXCP_RESET 1 +#define EXCP_INT(n) (EXCP_RESET + (n) + 1) + +/* Number of CPU registers */ +#define NUMBER_OF_CPU_REGISTERS 32 +/* Number of IO registers accessible by ld/st/in/out */ +#define NUMBER_OF_IO_REGISTERS 64 + +/* + * Offsets of AVR memory regions in host memory space. + * + * This is needed because the AVR has separate code and data address + * spaces that both have start from zero but have to go somewhere in + * host memory. + * + * It's also useful to know where some things are, like the IO registers. + */ +/* Flash program memory */ +#define OFFSET_CODE 0x00000000 +/* CPU registers, IO registers, and SRAM */ +#define OFFSET_DATA 0x00800000 +/* CPU registers specifically, these are mapped at the start of data */ +#define OFFSET_CPU_REGISTERS OFFSET_DATA +/* + * IO registers, including status register, stack pointer, and memory + * mapped peripherals, mapped just after CPU registers + */ +#define OFFSET_IO_REGISTERS (OFFSET_DATA + NUMBER_OF_CPU_REGISTERS) + +#define EF_AVR_MACH 0x7F + +#endif /* !defined (QEMU_AVR_CPU_H) */