From patchwork Tue Oct 29 20:58:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Phil Dennis-Jordan X-Patchwork-Id: 13855521 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4B2CAD5B17D for ; Tue, 29 Oct 2024 21:03:49 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t5tJl-0004T1-98; Tue, 29 Oct 2024 16:59:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t5tJT-000447-RH for qemu-devel@nongnu.org; Tue, 29 Oct 2024 16:59:41 -0400 Received: from mail-ed1-x52d.google.com ([2a00:1450:4864:20::52d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1t5tJQ-0005g4-9E for qemu-devel@nongnu.org; Tue, 29 Oct 2024 16:59:39 -0400 Received: by mail-ed1-x52d.google.com with SMTP id 4fb4d7f45d1cf-5cb72918bddso7814342a12.3 for ; Tue, 29 Oct 2024 13:59:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=philjordan-eu.20230601.gappssmtp.com; s=20230601; t=1730235575; x=1730840375; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ijAewjRBURoFdp5bzkLZ63F+nbsTOOkYMV9t/qC9vNc=; b=uwovqJ9HJGRNCwy2C7IaGM2CYMEacAGDRAydH6AfUuPHeOjo5Br1TLuRKT1nTxPuir pDCuU6ksLbaCYqc5jXexVxgeQszaSeINSx5bNnLkL2hQtuCI4A3BB6ZV8VDR+Gf+vf+R rDrJVQHxf8eVyyajlX0NfKoZAZryrWbQgsdpNBpTB2H1JXLIYXcZN5UXqhjV4i4fOw+1 t/VgQUyWN7QrRs27QuUs3gPBbqj7baihBcvsD5uq7ZhOpi3nZMXxA8KpPtliFGEy+1x9 ywyz/J2J2D25HrXO8rSGOjlUqCDBkw/rhfpLw8irwXeAo5S9gZ/UV2AUJvmYdmDehr/f 7Q0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730235575; x=1730840375; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ijAewjRBURoFdp5bzkLZ63F+nbsTOOkYMV9t/qC9vNc=; b=LAMNJ965jmfvd83JvomPrPYITfjjUWsGPB3tvJcob5631r/o/Rippk7kL6bUc32e/2 UPwg+gHdqx4LSRPR6s1RTj+LyPWBV2RvvdObVH0+H0lk/be9E0T3DPqzPB7dbu+GAxx/ oXip0IClpVIoR5SCfepJQwsbiRaZ1HaR62mV/JhXgz/EyEhM1oeebqauKPba+UaCopBw 26dAcz9CE/eNnfwYRW+z8tZBdW+jZUNZVM02QJJpJbcThE+xcods4/12SC+cceFRt+jo i9uy9y4dns5Gh704Dv2xRfB1GOtyoNmWJvx9dFCghZXek9CWoj9cYAh0jo2Y+V9CmrcN vDyw== X-Gm-Message-State: AOJu0YwGp/142c3FxzItgyBE10PQQFuowJ/BIUOAyN79OHVbblYfGMoP t9tn6h/VxOch7Ry//GJ/tu94ZXFqgPF4e+9nB+gJqJlQZX+H53PaAtIRADF1ToXzHSeNl72p1E6 51Q== X-Google-Smtp-Source: AGHT+IFZlM48rTvYY+1WL4olOrvqCoHT38Cxuv3bhJgqxjnjZR0G2xPo2fnQxVlo7jioIjajFvd8+g== X-Received: by 2002:a05:6402:254e:b0:5ca:da2:b2ca with SMTP id 4fb4d7f45d1cf-5cbbf8dc477mr9888063a12.19.1730235574769; Tue, 29 Oct 2024 13:59:34 -0700 (PDT) Received: from localhost.localdomain (h082218084190.host.wavenet.at. [82.218.84.190]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5cbb629d5besm4217341a12.33.2024.10.29.13.59.33 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 29 Oct 2024 13:59:34 -0700 (PDT) From: Phil Dennis-Jordan To: qemu-devel@nongnu.org Cc: agraf@csgraf.de, phil@philjordan.eu, peter.maydell@linaro.org, pbonzini@redhat.com, rad@semihalf.com, quic_llindhol@quicinc.com, marcin.juszkiewicz@linaro.org, stefanha@redhat.com, mst@redhat.com, slp@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, marcel.apfelbaum@gmail.com, gaosong@loongson.cn, jiaxun.yang@flygoat.com, chenhuacai@kernel.org, kwolf@redhat.com, hreitz@redhat.com, philmd@linaro.org, shorne@gmail.com, palmer@dabbelt.com, alistair.francis@wdc.com, bmeng.cn@gmail.com, liwei1518@gmail.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, jcmvbkbc@gmail.com, marcandre.lureau@redhat.com, berrange@redhat.com, akihiko.odaki@daynix.com, qemu-arm@nongnu.org, qemu-block@nongnu.org, qemu-riscv@nongnu.org, Alexander Graf Subject: [PATCH v5 12/15] hw/vmapple/cfg: Introduce vmapple cfg region Date: Tue, 29 Oct 2024 21:58:16 +0100 Message-Id: <20241029205819.69888-13-phil@philjordan.eu> X-Mailer: git-send-email 2.39.3 (Apple Git-145) In-Reply-To: <20241029205819.69888-1-phil@philjordan.eu> References: <20241029205819.69888-1-phil@philjordan.eu> MIME-Version: 1.0 Received-SPF: neutral client-ip=2a00:1450:4864:20::52d; envelope-from=phil@philjordan.eu; helo=mail-ed1-x52d.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.779 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Alexander Graf Instead of device tree or other more standardized means, VMApple passes platform configuration to the first stage boot loader in a binary encoded format that resides at a dedicated RAM region in physical address space. This patch models this configuration space as a qdev device which we can then map at the fixed location in the address space. That way, we can influence and annotate all configuration fields easily. Signed-off-by: Alexander Graf Signed-off-by: Phil Dennis-Jordan --- v3: * Replaced legacy device reset method with Resettable method v4: * Fixed initialisation of default values for properties * Dropped superfluous endianness conversions * Moved most header code to .c, device name #define goes in vmapple.h v5: * Improved error reporting in case of string property buffer overflow. hw/vmapple/Kconfig | 3 + hw/vmapple/cfg.c | 203 +++++++++++++++++++++++++++++++++++ hw/vmapple/meson.build | 1 + include/hw/vmapple/vmapple.h | 2 + 4 files changed, 209 insertions(+) create mode 100644 hw/vmapple/cfg.c diff --git a/hw/vmapple/Kconfig b/hw/vmapple/Kconfig index 68f88876eb9..8bbeb9a9237 100644 --- a/hw/vmapple/Kconfig +++ b/hw/vmapple/Kconfig @@ -4,3 +4,6 @@ config VMAPPLE_AES config VMAPPLE_BDIF bool +config VMAPPLE_CFG + bool + diff --git a/hw/vmapple/cfg.c b/hw/vmapple/cfg.c new file mode 100644 index 00000000000..91c57239f86 --- /dev/null +++ b/hw/vmapple/cfg.c @@ -0,0 +1,203 @@ +/* + * VMApple Configuration Region + * + * Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/vmapple/vmapple.h" +#include "hw/sysbus.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qapi/error.h" +#include "net/net.h" + +OBJECT_DECLARE_SIMPLE_TYPE(VMAppleCfgState, VMAPPLE_CFG) + +#define VMAPPLE_CFG_SIZE 0x00010000 + +typedef struct VMAppleCfg { + uint32_t version; /* 0x000 */ + uint32_t nr_cpus; /* 0x004 */ + uint32_t unk1; /* 0x008 */ + uint32_t unk2; /* 0x00c */ + uint32_t unk3; /* 0x010 */ + uint32_t unk4; /* 0x014 */ + uint64_t ecid; /* 0x018 */ + uint64_t ram_size; /* 0x020 */ + uint32_t run_installer1; /* 0x028 */ + uint32_t unk5; /* 0x02c */ + uint32_t unk6; /* 0x030 */ + uint32_t run_installer2; /* 0x034 */ + uint32_t rnd; /* 0x038 */ + uint32_t unk7; /* 0x03c */ + MACAddr mac_en0; /* 0x040 */ + uint8_t pad1[2]; + MACAddr mac_en1; /* 0x048 */ + uint8_t pad2[2]; + MACAddr mac_wifi0; /* 0x050 */ + uint8_t pad3[2]; + MACAddr mac_bt0; /* 0x058 */ + uint8_t pad4[2]; + uint8_t reserved[0xa0]; /* 0x060 */ + uint32_t cpu_ids[0x80]; /* 0x100 */ + uint8_t scratch[0x200]; /* 0x180 */ + char serial[32]; /* 0x380 */ + char unk8[32]; /* 0x3a0 */ + char model[32]; /* 0x3c0 */ + uint8_t unk9[32]; /* 0x3e0 */ + uint32_t unk10; /* 0x400 */ + char soc_name[32]; /* 0x404 */ +} VMAppleCfg; + +struct VMAppleCfgState { + SysBusDevice parent_obj; + VMAppleCfg cfg; + + MemoryRegion mem; + char *serial; + char *model; + char *soc_name; +}; + +static void vmapple_cfg_reset(Object *obj, ResetType type) +{ + VMAppleCfgState *s = VMAPPLE_CFG(obj); + VMAppleCfg *cfg; + + cfg = memory_region_get_ram_ptr(&s->mem); + memset(cfg, 0, VMAPPLE_CFG_SIZE); + *cfg = s->cfg; +} + +static bool strlcpy_set_error(char *restrict dst, const char *restrict src, + size_t dst_size, Error **errp, + const char *parent_func, const char *location, + const char *buffer_name, const char *extra_info) +{ + size_t len; + + len = g_strlcpy(dst, src, dst_size); + if (len < dst_size) { /* len does not count nul terminator */ + return true; + } + + error_setg(errp, + "%s (%s) strlcpy error: Destination buffer %s too small " + "(need %zu, have %zu) %s", + parent_func, location, buffer_name, len + 1, dst_size, extra_info); + return false; +} + +/* + * String copying wrapper that returns and reports a runtime error in + * case of truncation due to insufficient destination buffer space. + */ +#define strlcpy_array_return_error(dst_array, src, errp, extra_info) \ + do { \ + if (!strlcpy_set_error((dst_array), (src), ARRAY_SIZE(dst_array), \ + (errp), __func__, stringify(__LINE__), \ + # dst_array, extra_info)) { \ + return; \ + } \ + } while (0) + +static void vmapple_cfg_realize(DeviceState *dev, Error **errp) +{ + VMAppleCfgState *s = VMAPPLE_CFG(dev); + uint32_t i; + + if (!s->serial) { + s->serial = g_strdup("1234"); + } + if (!s->model) { + s->model = g_strdup("VM0001"); + } + if (!s->soc_name) { + s->soc_name = g_strdup("Apple M1 (Virtual)"); + } + + strlcpy_array_return_error(s->cfg.serial, s->serial, errp, + "setting 'serial' property on VMApple cfg device"); + strlcpy_array_return_error(s->cfg.model, s->model, errp, + "setting 'model' property on VMApple cfg device"); + strlcpy_array_return_error(s->cfg.soc_name, s->soc_name, errp, + "setting 'soc_name' property on VMApple cfg device"); + strlcpy_array_return_error(s->cfg.unk8, "D/A", errp, ""); + s->cfg.version = 2; + s->cfg.unk1 = 1; + s->cfg.unk2 = 1; + s->cfg.unk3 = 0x20; + s->cfg.unk4 = 0; + s->cfg.unk5 = 1; + s->cfg.unk6 = 1; + s->cfg.unk7 = 0; + s->cfg.unk10 = 1; + + if (s->cfg.nr_cpus > ARRAY_SIZE(s->cfg.cpu_ids)) { + error_setg(errp, + "Failed to create %u CPUs, vmapple machine supports %zu max", + s->cfg.nr_cpus, ARRAY_SIZE(s->cfg.cpu_ids)); + return; + } + for (i = 0; i < s->cfg.nr_cpus; i++) { + s->cfg.cpu_ids[i] = i; + } +} + +static void vmapple_cfg_init(Object *obj) +{ + VMAppleCfgState *s = VMAPPLE_CFG(obj); + + memory_region_init_ram(&s->mem, obj, "VMApple Config", VMAPPLE_CFG_SIZE, + &error_fatal); + sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mem); +} + +static Property vmapple_cfg_properties[] = { + DEFINE_PROP_UINT32("nr-cpus", VMAppleCfgState, cfg.nr_cpus, 1), + DEFINE_PROP_UINT64("ecid", VMAppleCfgState, cfg.ecid, 0), + DEFINE_PROP_UINT64("ram-size", VMAppleCfgState, cfg.ram_size, 0), + DEFINE_PROP_UINT32("run_installer1", VMAppleCfgState, cfg.run_installer1, 0), + DEFINE_PROP_UINT32("run_installer2", VMAppleCfgState, cfg.run_installer2, 0), + DEFINE_PROP_UINT32("rnd", VMAppleCfgState, cfg.rnd, 0), + DEFINE_PROP_MACADDR("mac-en0", VMAppleCfgState, cfg.mac_en0), + DEFINE_PROP_MACADDR("mac-en1", VMAppleCfgState, cfg.mac_en1), + DEFINE_PROP_MACADDR("mac-wifi0", VMAppleCfgState, cfg.mac_wifi0), + DEFINE_PROP_MACADDR("mac-bt0", VMAppleCfgState, cfg.mac_bt0), + DEFINE_PROP_STRING("serial", VMAppleCfgState, serial), + DEFINE_PROP_STRING("model", VMAppleCfgState, model), + DEFINE_PROP_STRING("soc_name", VMAppleCfgState, soc_name), + DEFINE_PROP_END_OF_LIST(), +}; + +static void vmapple_cfg_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ResettableClass *rc = RESETTABLE_CLASS(klass); + + dc->realize = vmapple_cfg_realize; + dc->desc = "VMApple Configuration Region"; + device_class_set_props(dc, vmapple_cfg_properties); + rc->phases.hold = vmapple_cfg_reset; +} + +static const TypeInfo vmapple_cfg_info = { + .name = TYPE_VMAPPLE_CFG, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(VMAppleCfgState), + .instance_init = vmapple_cfg_init, + .class_init = vmapple_cfg_class_init, +}; + +static void vmapple_cfg_register_types(void) +{ + type_register_static(&vmapple_cfg_info); +} + +type_init(vmapple_cfg_register_types) diff --git a/hw/vmapple/meson.build b/hw/vmapple/meson.build index d4624713deb..64b78693a31 100644 --- a/hw/vmapple/meson.build +++ b/hw/vmapple/meson.build @@ -1,2 +1,3 @@ system_ss.add(when: 'CONFIG_VMAPPLE_AES', if_true: files('aes.c')) system_ss.add(when: 'CONFIG_VMAPPLE_BDIF', if_true: files('bdif.c')) +system_ss.add(when: 'CONFIG_VMAPPLE_CFG', if_true: files('cfg.c')) diff --git a/include/hw/vmapple/vmapple.h b/include/hw/vmapple/vmapple.h index 9090e9c5ac8..3bba59f5ec7 100644 --- a/include/hw/vmapple/vmapple.h +++ b/include/hw/vmapple/vmapple.h @@ -16,4 +16,6 @@ #define TYPE_VMAPPLE_BDIF "vmapple-bdif" +#define TYPE_VMAPPLE_CFG "vmapple-cfg" + #endif /* HW_VMAPPLE_VMAPPLE_H */