From patchwork Fri Jun 26 23:55:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Havard Skinnemoen X-Patchwork-Id: 11629117 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 8EAD76C1 for ; Sat, 27 Jun 2020 00:00:35 +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 655B0206A5 for ; Sat, 27 Jun 2020 00:00:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="fI1n0wf6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 655B0206A5 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.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]:55970 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1joyGo-0007jy-Ii for patchwork-qemu-devel@patchwork.kernel.org; Fri, 26 Jun 2020 20:00:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53250) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <3DYv2XgsKCvojumkppgoqgpiqqing.eqosgow-fgxgnpqpipw.qti@flex--hskinnemoen.bounces.google.com>) id 1joyCP-0007vX-HK for qemu-devel@nongnu.org; Fri, 26 Jun 2020 19:56:01 -0400 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]:38069) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from <3DYv2XgsKCvojumkppgoqgpiqqing.eqosgow-fgxgnpqpipw.qti@flex--hskinnemoen.bounces.google.com>) id 1joyCM-0002At-Kg for qemu-devel@nongnu.org; Fri, 26 Jun 2020 19:56:01 -0400 Received: by mail-yb1-xb4a.google.com with SMTP id f16so11582082ybp.5 for ; Fri, 26 Jun 2020 16:55:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc:content-transfer-encoding; bh=c4FRN4nMHg8ekZ0T126HkvZJ16z0qmHNtGTXzE8nVaI=; b=fI1n0wf6OCtOvFmCQH2flMysGibux5mIw8PsXk/N5j8Jr+s93xan3VLR+Q+QpKpCzn Mqakyv5ishfbxJ1UCgnKsJibWaM2/mCEpKnsgN4PgA0IbJKmUn/8vmDLT9p77Qp187ZS rS03ycBK3TquyCGfEVGSuNLNgkc8rgc0mKloS9oyyFQee3gKW6npw7Gs8uoiISPL1m5C LJVNKxpCp5xBNj6KUDBnnVJ3wKoC6/vYJMxOkd/rSj7fEM+WeZxqKtP4N6xrtlrN5sua SMaWqjiX4luw9sE6KWFvYcZnefmlT59uIQEfArGX4lMrjpions5cjlLOalZGP/l0aJrB lKtA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc:content-transfer-encoding; bh=c4FRN4nMHg8ekZ0T126HkvZJ16z0qmHNtGTXzE8nVaI=; b=o3N+MITJ4X+ScITuyRpRlOv0a9n8YHVUVPoTKULXIYHQsNyUSQSCeElxYWbXoO9274 nugs16Rx6tPWsqhaL/qEoi5Uf9Mixd4A5ZpkZfklt1j0dMAuFJMLt2k4Ah1s6UuUqZE2 jQdQWCsGXhmQEsRVQgV8lfTSJRCR6JsRo88V3I1ZVY7QPkWB6ncH1M6HFG92f4lS7mUF gyO6g8i1fSsWMU58TO0SMQ7+2U7WEv2V6bB2Tjr4oKFjKCB1RyZXYtYcpS7/JNpuR8zc HOml2zAo8axfTMJYrJUv0xA9NBjv/FKJaGkQmAj9fE2e66+vKPYArQ/ViFa89HCMfdcF c5kQ== X-Gm-Message-State: AOAM533SuU+LAMAFw270wSs7OXv9m77As+eeeeRl2Vsutfhd8Va71025 XHMYEtLcypW/DZUx5a+ilghS2PqTR6sI4vkR/A== X-Google-Smtp-Source: ABdhPJzhRd1/SMsnJpT61Ctgsuqr6pl7e4Ipu3fN8vW6qGKfA9gRK+kDnNNS435BoGmmvkOZOTKIiqWBL8vi36jPyQ== X-Received: by 2002:a05:6902:100b:: with SMTP id w11mr6295345ybt.232.1593215757182; Fri, 26 Jun 2020 16:55:57 -0700 (PDT) Date: Fri, 26 Jun 2020 16:55:16 -0700 In-Reply-To: <20200626235519.591734-1-hskinnemoen@google.com> Message-Id: <20200626235519.591734-10-hskinnemoen@google.com> Mime-Version: 1.0 References: <20200626235519.591734-1-hskinnemoen@google.com> X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH v3 09/12] hw/mem: Stubbed out NPCM7xx Memory Controller model From: Havard Skinnemoen To: peter.maydell@linaro.org, clg@kaod.org, joel@jms.id.au Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, Avi.Fishman@nuvoton.com, kfting@nuvoton.com, Havard Skinnemoen Received-SPF: pass client-ip=2607:f8b0:4864:20::b4a; envelope-from=3DYv2XgsKCvojumkppgoqgpiqqing.eqosgow-fgxgnpqpipw.qti@flex--hskinnemoen.bounces.google.com; helo=mail-yb1-xb4a.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -105 X-Spam_score: -10.6 X-Spam_bar: ---------- X-Spam_report: (-10.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=_AUTOLEARN X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This just implements the bare minimum to cause the boot block to skip memory initialization. Reviewed-by: Tyrone Ting Reviewed-by: Cédric Le Goater Signed-off-by: Havard Skinnemoen --- hw/arm/npcm7xx.c | 10 +++++ hw/mem/Makefile.objs | 1 + hw/mem/npcm7xx_mc.c | 83 +++++++++++++++++++++++++++++++++++++ include/hw/arm/npcm7xx.h | 2 + include/hw/mem/npcm7xx_mc.h | 35 ++++++++++++++++ 5 files changed, 131 insertions(+) create mode 100644 hw/mem/npcm7xx_mc.c create mode 100644 include/hw/mem/npcm7xx_mc.h diff --git a/hw/arm/npcm7xx.c b/hw/arm/npcm7xx.c index 825910a4bf..4ab7fdd405 100644 --- a/hw/arm/npcm7xx.c +++ b/hw/arm/npcm7xx.c @@ -45,6 +45,7 @@ #define NPCM7XX_CPUP_BA (0xF03FE000) #define NPCM7XX_GCR_BA (0xF0800000) #define NPCM7XX_CLK_BA (0xF0801000) +#define NPCM7XX_MC_BA (0xF0824000) /* Memory blocks at the end of the address space */ #define NPCM7XX_RAM2_BA (0xFFFD0000) @@ -159,6 +160,7 @@ static void npcm7xx_init(Object *obj) TYPE_NPCM7XX_KEY_STORAGE); object_initialize_child(obj, "otp2", &s->fuse_array, TYPE_NPCM7XX_FUSE_ARRAY); + object_initialize_child(obj, "mc", &s->mc, TYPE_NPCM7XX_MC); for (i = 0; i < ARRAY_SIZE(s->tim); i++) { object_initialize_child(obj, "tim[*]", &s->tim[i], TYPE_NPCM7XX_TIMER); @@ -257,6 +259,14 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp) sysbus_mmio_map(SYS_BUS_DEVICE(&s->fuse_array), 0, NPCM7XX_OTP2_BA); npcm7xx_init_fuses(s); + /* Fake Memory Controller (MC) */ + sysbus_realize(SYS_BUS_DEVICE(&s->mc), &err); + if (err) { + error_propagate(errp, err); + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->mc), 0, NPCM7XX_MC_BA); + /* Timer Modules (TIM) */ QEMU_BUILD_BUG_ON(ARRAY_SIZE(npcm7xx_tim_addr) != ARRAY_SIZE(s->tim)); for (i = 0; i < ARRAY_SIZE(s->tim); i++) { diff --git a/hw/mem/Makefile.objs b/hw/mem/Makefile.objs index 56345befd0..9a33ef7b35 100644 --- a/hw/mem/Makefile.objs +++ b/hw/mem/Makefile.objs @@ -1,3 +1,4 @@ common-obj-$(CONFIG_DIMM) += pc-dimm.o common-obj-y += memory-device.o +common-obj-$(CONFIG_NPCM7XX) += npcm7xx_mc.o common-obj-$(CONFIG_NVDIMM) += nvdimm.o diff --git a/hw/mem/npcm7xx_mc.c b/hw/mem/npcm7xx_mc.c new file mode 100644 index 0000000000..03a7fb53dc --- /dev/null +++ b/hw/mem/npcm7xx_mc.c @@ -0,0 +1,83 @@ +/* + * Nuvoton NPCM7xx Memory Controller stub + * + * Copyright 2020 Google LLC + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#include "qemu/osdep.h" + +#include "hw/mem/npcm7xx_mc.h" +#include "qapi/error.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qemu/units.h" + +#define NPCM7XX_MC_REGS_SIZE (4 * KiB) + +static uint64_t npcm7xx_mc_read(void *opaque, hwaddr addr, unsigned int size) +{ + /* + * If bits 8..11 @ offset 0 are not zero, the boot block thinks the memory + * controller has already been initialized and will skip DDR training. + */ + if (addr == 0) { + return 0x100; + } + + qemu_log_mask(LOG_UNIMP, "%s: mostly unimplemented\n", __func__); + + return 0; +} + +static void npcm7xx_mc_write(void *opaque, hwaddr addr, uint64_t v, + unsigned int size) +{ + qemu_log_mask(LOG_UNIMP, "%s: mostly unimplemented\n", __func__); +} + +static const MemoryRegionOps npcm7xx_mc_ops = { + .read = npcm7xx_mc_read, + .write = npcm7xx_mc_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void npcm7xx_mc_realize(DeviceState *dev, Error **errp) +{ + NPCM7xxMCState *s = NPCM7XX_MC(dev); + + memory_region_init_io(&s->mmio, OBJECT(s), &npcm7xx_mc_ops, s, "regs", + NPCM7XX_MC_REGS_SIZE); + sysbus_init_mmio(&s->parent, &s->mmio); +} + +static void npcm7xx_mc_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "NPCM7xx Memory Controller stub"; + dc->realize = npcm7xx_mc_realize; +} + +static const TypeInfo npcm7xx_mc_types[] = { + { + .name = TYPE_NPCM7XX_MC, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(NPCM7xxMCState), + .class_init = npcm7xx_mc_class_init, + }, +}; +DEFINE_TYPES(npcm7xx_mc_types); diff --git a/include/hw/arm/npcm7xx.h b/include/hw/arm/npcm7xx.h index 360cd965a7..8f49f7015c 100644 --- a/include/hw/arm/npcm7xx.h +++ b/include/hw/arm/npcm7xx.h @@ -17,6 +17,7 @@ #include "hw/boards.h" #include "hw/cpu/a9mpcore.h" +#include "hw/mem/npcm7xx_mc.h" #include "hw/misc/npcm7xx_clk.h" #include "hw/misc/npcm7xx_gcr.h" #include "hw/nvram/npcm7xx_otp.h" @@ -65,6 +66,7 @@ typedef struct NPCM7xxState { NPCM7xxTimerCtrlState tim[3]; NPCM7xxOTPState key_storage; NPCM7xxOTPState fuse_array; + NPCM7xxMCState mc; } NPCM7xxState; #define TYPE_NPCM7XX "npcm7xx" diff --git a/include/hw/mem/npcm7xx_mc.h b/include/hw/mem/npcm7xx_mc.h new file mode 100644 index 0000000000..8781f5c979 --- /dev/null +++ b/include/hw/mem/npcm7xx_mc.h @@ -0,0 +1,35 @@ +/* + * Nuvoton NPCM7xx Memory Controller stub + * + * Copyright 2020 Google LLC + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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. + */ +#ifndef NPCM7XX_MC_H +#define NPCM7XX_MC_H + +#include "exec/memory.h" +#include "hw/sysbus.h" + +/** + * struct NPCM7xxMCState - Device state for the memory controller. + * @parent: System bus device. + * @mmio: Memory region through which registers are accessed. + */ +typedef struct NPCM7xxMCState { + SysBusDevice parent; + + MemoryRegion mmio; +} NPCM7xxMCState; + +#define TYPE_NPCM7XX_MC "npcm7xx-mc" +#define NPCM7XX_MC(obj) OBJECT_CHECK(NPCM7xxMCState, (obj), TYPE_NPCM7XX_MC) + +#endif /* NPCM7XX_MC_H */