From patchwork Fri Jul 17 06:02:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Havard Skinnemoen X-Patchwork-Id: 1330756 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=jwV7ZMBT; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4B7LFD3S6tz9sQt for ; Fri, 17 Jul 2020 16:05:04 +1000 (AEST) Received: from localhost ([::1]:34644 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jwJUU-00052o-5j for incoming@patchwork.ozlabs.org; Fri, 17 Jul 2020 02:05:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60210) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <3MT8RXwsKCvIbmechhYgiYhaiiafY.WigkYgo-XYpYfhihaho.ila@flex--hskinnemoen.bounces.google.com>) id 1jwJT6-0003o8-3h for qemu-devel@nongnu.org; Fri, 17 Jul 2020 02:03:36 -0400 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]:44370) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from <3MT8RXwsKCvIbmechhYgiYhaiiafY.WigkYgo-XYpYfhihaho.ila@flex--hskinnemoen.bounces.google.com>) id 1jwJT0-0005Hz-Sc for qemu-devel@nongnu.org; Fri, 17 Jul 2020 02:03:35 -0400 Received: by mail-yb1-xb4a.google.com with SMTP id k127so10090024ybk.11 for ; Thu, 16 Jul 2020 23:03:29 -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=qsJ/ZygQks0Y4Kmg+GGXR1DhNMa+QMME0tEXCYJ4szY=; b=jwV7ZMBT38HSfoR6RyJXkKLqUiW2k59B6qiAZ/Wc2FP9Im3sUKAHSVJ/1jyPp+7dCE zl2a82+k8Yk7fGI+CmD7CKNl6rMt41wMoK61NDz17nH3ks9dE9IKWnUiCdQ7LPJ765s0 qiI1R/ePjTzbTEx4+qA+lKXo59rPr7YHhcdPoK9+4zkgvVbld7IycnqHTjj2iHTG72dF jt30rhdwd3EUiOt16qwrHP+rpyoEx6RbR+ygH741Tf2cc1nL66q6Rj1daAzGwSmaKU7U U7ACyFVhKR1mQN2jhqtieufeCqC6lSqF2liCI26dABDTZhUzkglFoDPmKppPdseyxVEw 9G/w== 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=qsJ/ZygQks0Y4Kmg+GGXR1DhNMa+QMME0tEXCYJ4szY=; b=fL7WVVAd079qZL9C2RJM+FDBxrhX5VMYvBt7zAgapo3IJAhEEb/THDnhX2LA+BLgAt XrF0EP66y7m3e7RL+RxnEdH0VP4bdixhdOl5NBb4yNIdjNucBb7UV5LB5Jcucbcxjhpk Y69vxfMTlK7JGjDh3I8k50elQyTKwvUMHkjUquToEEm3DFrHr5B1cy2HhIudPqJDtbB6 eAezs5MB3wqnxvqS3y/mwum6swFgNRSYhnUghCkIb3vBUmWC5wLkcjwzir9GU7CbCPPJ SXd5nrpEgEMID6FlLQmr5IeqAFTK192E4vbcNN61WXo9rF4pLrpvkc+hc3iruczDo2XH BpEw== X-Gm-Message-State: AOAM532qgobeRdXDjzB+dhXOyMXqMXoxkqIMenJPosnjLyr2jqY6Tpqp N10CHr8JN+PlWHcXjV6GDgjf5XO6LtUive2SUQXvfTrDNNHCt6vc1jTgU0T2NFeZZ2/jejwHzNE rY+1CwnpHyKNbZs6XJbzXIDM/PDKsTOqkFxyc3kHW5o0cn7eeRxtpamab4MQiInIc2G6uJsckjg == X-Google-Smtp-Source: ABdhPJxumLxMHVs5MLxMWUIoXljRjVWPCEtSsK6L2roFCiGFN3CTrLEZmKm/m1glQh0KBUszRcKW/p05Y68NVqppow== X-Received: by 2002:a25:3788:: with SMTP id e130mr12380185yba.372.1594965809220; Thu, 16 Jul 2020 23:03:29 -0700 (PDT) Date: Thu, 16 Jul 2020 23:02:54 -0700 In-Reply-To: <20200717060258.1602319-1-hskinnemoen@google.com> Message-Id: <20200717060258.1602319-10-hskinnemoen@google.com> Mime-Version: 1.0 References: <20200717060258.1602319-1-hskinnemoen@google.com> X-Mailer: git-send-email 2.28.0.rc0.105.gf9edc3c819-goog Subject: [PATCH v6 09/13] hw/mem: Stubbed out NPCM7xx Memory Controller model From: Havard Skinnemoen To: qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: Avi.Fishman@nuvoton.com, kfting@nuvoton.com, Havard Skinnemoen , " =?utf-8?q?C=C3=A9dric_Le_Go?= =?utf-8?q?ater?= " , " =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= " Received-SPF: pass client-ip=2607:f8b0:4864:20::b4a; envelope-from=3MT8RXwsKCvIbmechhYgiYhaiiafY.WigkYgo-XYpYfhihaho.ila@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=ham autolearn_force=no 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+incoming=patchwork.ozlabs.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 Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Havard Skinnemoen --- include/hw/arm/npcm7xx.h | 2 + include/hw/mem/npcm7xx_mc.h | 36 ++++++++++++++++ hw/arm/npcm7xx.c | 6 +++ hw/mem/npcm7xx_mc.c | 84 +++++++++++++++++++++++++++++++++++++ hw/mem/Makefile.objs | 1 + 5 files changed, 129 insertions(+) create mode 100644 include/hw/mem/npcm7xx_mc.h create mode 100644 hw/mem/npcm7xx_mc.c diff --git a/include/hw/arm/npcm7xx.h b/include/hw/arm/npcm7xx.h index 5816a07a72..9fa84a0702 100644 --- a/include/hw/arm/npcm7xx.h +++ b/include/hw/arm/npcm7xx.h @@ -18,6 +18,7 @@ #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" @@ -71,6 +72,7 @@ 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..7ed38be243 --- /dev/null +++ b/include/hw/mem/npcm7xx_mc.h @@ -0,0 +1,36 @@ +/* + * 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 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. + */ +#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 */ diff --git a/hw/arm/npcm7xx.c b/hw/arm/npcm7xx.c index 9166002598..6bb1693833 100644 --- a/hw/arm/npcm7xx.c +++ b/hw/arm/npcm7xx.c @@ -43,6 +43,7 @@ #define NPCM7XX_CPUP_BA (0xf03fe000) #define NPCM7XX_GCR_BA (0xf0800000) #define NPCM7XX_CLK_BA (0xf0801000) +#define NPCM7XX_MC_BA (0xf0824000) /* Internal AHB SRAM */ #define NPCM7XX_RAM3_BA (0xc0008000) @@ -186,6 +187,7 @@ 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); @@ -261,6 +263,10 @@ 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). Cannot fail. */ + sysbus_realize(SYS_BUS_DEVICE(&s->mc), &error_abort); + sysbus_mmio_map(SYS_BUS_DEVICE(&s->mc), 0, NPCM7XX_MC_BA); + /* Timer Modules (TIM). Cannot fail. */ 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/npcm7xx_mc.c b/hw/mem/npcm7xx_mc.c new file mode 100644 index 0000000000..0435d06ab4 --- /dev/null +++ b/hw/mem/npcm7xx_mc.c @@ -0,0 +1,84 @@ +/* + * 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 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. + */ + +#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/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