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GET /api/patches/2217894/?format=api
{ "id": 2217894, "url": "http://patchwork.ozlabs.org/api/patches/2217894/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260330211859.19317-11-deller@kernel.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260330211859.19317-11-deller@kernel.org>", "list_archive_url": null, "date": "2026-03-30T21:18:57", "name": "[10/11] hw/hppa: Implement memory ranges", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "0a720ec2e97718312aaf26178cbbe6d84e30e25f", "submitter": { "id": 87076, "url": "http://patchwork.ozlabs.org/api/people/87076/?format=api", "name": "Helge Deller", "email": "deller@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260330211859.19317-11-deller@kernel.org/mbox/", "series": [ { "id": 498097, "url": "http://patchwork.ozlabs.org/api/series/498097/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498097", "date": "2026-03-30T21:18:54", "name": "HPPA Patches for qemu-v11", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498097/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217894/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217894/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=Ebgf31kc;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fl4012d2Nz1y1q\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 31 Mar 2026 08:20:01 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1w7K11-0000q9-4s; Mon, 30 Mar 2026 17:19:19 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <deller@kernel.org>) id 1w7K0z-0000q0-Pl\n for qemu-devel@nongnu.org; Mon, 30 Mar 2026 17:19:17 -0400", "from sea.source.kernel.org ([172.234.252.31])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <deller@kernel.org>) id 1w7K0y-0003m1-57\n for qemu-devel@nongnu.org; Mon, 30 Mar 2026 17:19:17 -0400", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n by sea.source.kernel.org (Postfix) with ESMTP id 149AA43974;\n Mon, 30 Mar 2026 21:19:15 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 17928C4CEF7;\n Mon, 30 Mar 2026 21:19:13 +0000 (UTC)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n s=k20201202; t=1774905554;\n bh=8emu/u6YmaOVzGpK7CGOuoWPdfvgVUfc6OOJwBpWcog=;\n h=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n b=Ebgf31kc7xlo5c5vOUOMy668MJ1vKNNVoaUY0u1H3DBRy+wJudCB6mNrsjTjmOas5\n MGzPflJvWKJHYdPqpQdZIU/7naZF0UL45a965W5pVSrH0Xt1gRfDT1FNV1K+bD/PpE\n o9rX6x+SKfybqMIceeCg5o6pCUvWSeRIYpuFUMxViTvzaaySYgAEktgxHWRsEKXPZ9\n saU+FhOVIVqEaCa6vfAuw6sN0lnjjHvHW6ZjCznoKRNOawjKQRLPNh2v9e1IuqyhFr\n oQGUhqcs79aYMQ2N408J8VgnFj5wWXC+AXtOtKe80PVm4EDLHmCUVrUZM2vnlz+7re\n r+OAVGp85G1ZA==", "From": "Helge Deller <deller@kernel.org>", "To": "qemu-devel@nongnu.org", "Cc": "deller@gmx.de,\n\tRichard Henderson <richard.henderson@linaro.org>", "Subject": "[PATCH 10/11] hw/hppa: Implement memory ranges", "Date": "Mon, 30 Mar 2026 23:18:57 +0200", "Message-ID": "<20260330211859.19317-11-deller@kernel.org>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260330211859.19317-1-deller@kernel.org>", "References": "<20260330211859.19317-1-deller@kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=172.234.252.31; envelope-from=deller@kernel.org;\n helo=sea.source.kernel.org", "X-Spam_score_int": "-5", "X-Spam_score": "-0.6", "X-Spam_bar": "/", "X-Spam_report": "(-0.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=1, RCVD_IN_VALIDITY_RPBL_BLOCKED=1,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Helge Deller <deller@gmx.de>\n\nAll 64-bit PA-RISC machines split the memory into (up to 3) different\nmemory ranges, which are mapped at specific addresses. This patch\nmimics the mapping as it's done on physical machines, which includes the\n3.75 GB split for C3700, and 1 GB split for newer 64-bit PAT machines\nlike the A400.\n\nSeaBIOS-hppa needs to know how the memory split is done, so add a new\nmemsplit_addr variable which stores the specific split address and hand\nthis over to SeaBIOS-hppa via fwcfg.\n\nSigned-off-by: Helge Deller <deller@gmx.de>\n---\n hw/hppa/hppa_hardware.h | 3 ++-\n hw/hppa/machine.c | 58 ++++++++++++++++++++++++++++++-----------\n 2 files changed, 45 insertions(+), 16 deletions(-)", "diff": "diff --git a/hw/hppa/hppa_hardware.h b/hw/hppa/hppa_hardware.h\nindex 006aae63b9..e2b2faa4a3 100644\n--- a/hw/hppa/hppa_hardware.h\n+++ b/hw/hppa/hppa_hardware.h\n@@ -8,7 +8,8 @@\n #define FIRMWARE_END 0xf0100000\n #define FIRMWARE_HIGH 0xfffffff0 /* upper 32-bits of 64-bit firmware address */\n \n-#define RAM_MAP_HIGH 0x0100000000 /* memory above 3.75 GB is mapped here */\n+#define RAM_MAP_HIGH1 0x0100000000 /* memory above 4 GB */\n+#define RAM_MAP_HIGH2 0x4040000000 /* memory between 1 G and 3.75 GB */\n \n #define MEM_PDC_ENTRY 0x4800 /* PDC entry address */\n \ndiff --git a/hw/hppa/machine.c b/hw/hppa/machine.c\nindex 58e76bee2e..eece05ab65 100644\n--- a/hw/hppa/machine.c\n+++ b/hw/hppa/machine.c\n@@ -43,6 +43,8 @@ OBJECT_DECLARE_SIMPLE_TYPE(HppaMachineState, HPPA_COMMON_MACHINE)\n \n struct HppaMachineState {\n MachineState parent_obj;\n+\n+ uint64_t memsplit_addr;\n };\n \n #define MIN_SEABIOS_HPPA_VERSION 22 /* require at least this fw version */\n@@ -208,6 +210,7 @@ static FWCfgState *create_fw_cfg(MachineState *ms, PCIBus *pci_bus,\n const char qemu_version[] = QEMU_VERSION;\n MachineClass *mc = MACHINE_GET_CLASS(ms);\n int btlb_entries = HPPA_BTLB_ENTRIES(&cpu[0]->env);\n+ struct HppaMachineState *hpm = HPPA_COMMON_MACHINE(ms);\n int len;\n \n fw_cfg = fw_cfg_init_mem_nodma(addr, addr + 4, 1);\n@@ -231,6 +234,10 @@ static FWCfgState *create_fw_cfg(MachineState *ms, PCIBus *pci_bus,\n fw_cfg_add_file(fw_cfg, \"/etc/hppa/machine\",\n g_memdup2(mc->name, len), len);\n \n+ val = cpu_to_le64(hpm->memsplit_addr);\n+ fw_cfg_add_file(fw_cfg, \"/etc/hppa/memsplit-addr\",\n+ g_memdup2(&val, sizeof(val)), sizeof(val));\n+\n val = cpu_to_le64(soft_power_reg);\n fw_cfg_add_file(fw_cfg, \"/etc/hppa/power-button-addr\",\n g_memdup2(&val, sizeof(val)), sizeof(val));\n@@ -287,6 +294,8 @@ static TranslateFn *machine_HP_common_init_cpus(MachineState *machine)\n TranslateFn *translate;\n MemoryRegion *cpu_region;\n uint64_t ram_max;\n+ struct HppaMachineState *hpm;\n+ hwaddr splitaddr;\n \n /* Create CPUs. */\n for (unsigned int i = 0; i < smp_cpus; i++) {\n@@ -347,21 +356,36 @@ static TranslateFn *machine_HP_common_init_cpus(MachineState *machine)\n info_report(\"Max RAM size limited to %\" PRIu64 \" MB\", ram_max / MiB);\n machine->ram_size = ram_max;\n }\n- if (machine->ram_size <= FIRMWARE_START) {\n- /* contiguous memory up to 3.75 GB RAM */\n- memory_region_add_subregion_overlap(addr_space, 0, machine->ram, -1);\n- } else {\n+\n+ hpm = HPPA_COMMON_MACHINE(machine);\n+ if (!hpm->memsplit_addr) {\n /* non-contiguous: Memory above 3.75 GB is mapped at RAM_MAP_HIGH */\n- MemoryRegion *mem_region;\n- mem_region = g_new(MemoryRegion, 2);\n- memory_region_init_alias(&mem_region[0], &addr_space->parent_obj,\n- \"LowMem\", machine->ram, 0, FIRMWARE_START);\n- memory_region_init_alias(&mem_region[1], &addr_space->parent_obj,\n- \"HighMem\", machine->ram, FIRMWARE_START,\n- machine->ram_size - FIRMWARE_START);\n- memory_region_add_subregion_overlap(addr_space, 0, &mem_region[0], -1);\n- memory_region_add_subregion_overlap(addr_space, RAM_MAP_HIGH,\n- &mem_region[1], -1);\n+ hpm->memsplit_addr = FIRMWARE_START;\n+ }\n+ splitaddr = hpm->memsplit_addr;\n+\n+ MemoryRegion *mem_region;\n+ mem_region = g_new(MemoryRegion, 1);\n+ memory_region_init_alias(&mem_region[0], &addr_space->parent_obj,\n+ \"Range0_Mem\", machine->ram, 0, splitaddr);\n+ memory_region_add_subregion_overlap(addr_space, 0, &mem_region[0], -1);\n+ if (hppa_is_pa20(&cpu[0]->env)) {\n+ if (machine->ram_size > 4 * GiB) {\n+ mem_region = g_new(MemoryRegion, 1);\n+ memory_region_init_alias(&mem_region[0], &addr_space->parent_obj,\n+ \"Range1_Mem\", machine->ram, 4 * GiB,\n+ machine->ram_size - 4 * GiB);\n+ memory_region_add_subregion_overlap(addr_space, RAM_MAP_HIGH1,\n+ &mem_region[0], -1);\n+ }\n+ if (machine->ram_size > splitaddr) {\n+ mem_region = g_new(MemoryRegion, 1);\n+ memory_region_init_alias(&mem_region[0], &addr_space->parent_obj,\n+ \"Range2_Mem\", machine->ram, splitaddr,\n+ 4 * GiB - splitaddr);\n+ memory_region_add_subregion_overlap(addr_space, RAM_MAP_HIGH2,\n+ &mem_region[0], -1);\n+ }\n }\n \n return translate;\n@@ -757,6 +781,10 @@ static void machine_HP_C3700_init(MachineState *machine)\n */\n static void machine_HP_A400_init(MachineState *machine)\n {\n+ struct HppaMachineState *hpm;\n+\n+ hpm = HPPA_COMMON_MACHINE(machine);\n+ hpm->memsplit_addr = 1 * GiB;\n machine_HP_C3700_init(machine);\n }\n \n@@ -815,7 +843,7 @@ static void hppa_machine_common_class_init(ObjectClass *oc, const void *data)\n mc->default_cpus = 1;\n mc->max_cpus = HPPA_MAX_CPUS;\n mc->default_boot_order = \"cd\";\n- mc->default_ram_id = \"ram\";\n+ mc->default_ram_id = \"hppa.ram\";\n mc->default_nic = \"tulip\";\n \n nc->nmi_monitor_handler = hppa_nmi;\n", "prefixes": [ "10/11" ] }