From patchwork Tue Jul 12 08:32:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaojuan Yang X-Patchwork-Id: 12914645 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 D6788C433EF for ; Tue, 12 Jul 2022 08:54:32 +0000 (UTC) Received: from localhost ([::1]:60890 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oBBf5-0005nu-Ey for qemu-devel@archiver.kernel.org; Tue, 12 Jul 2022 04:54:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51420) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oBBJf-0002rq-Te for qemu-devel@nongnu.org; Tue, 12 Jul 2022 04:32:27 -0400 Received: from mail.loongson.cn ([114.242.206.163]:40906 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oBBJb-0006R4-0j for qemu-devel@nongnu.org; Tue, 12 Jul 2022 04:32:23 -0400 Received: from localhost.localdomain (unknown [10.2.5.185]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dxz9CGMc1iyeQYAA--.15566S8; Tue, 12 Jul 2022 16:32:09 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, gaosong@loongson.cn, maobibo@loongson.cn, mark.cave-ayland@ilande.co.uk, mst@redhat.com, imammedo@redhat.com, ani@anisinha.ca, f4bug@amsat.org, peter.maydell@linaro.org Subject: [PATCH 6/6] hw/loongarch: Add fdt support Date: Tue, 12 Jul 2022 16:32:06 +0800 Message-Id: <20220712083206.4187715-7-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220712083206.4187715-1-yangxiaojuan@loongson.cn> References: <20220712083206.4187715-1-yangxiaojuan@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf9Dxz9CGMc1iyeQYAA--.15566S8 X-Coremail-Antispam: 1UD129KBjvJXoWxtw1rtryUur1ruF4rGF4fGrg_yoW3tw4kpF W7AFWUWrW8Xrn7urs3W345uwn3Jr18GFW7Ww47WrWFkFyDWw1UZay0ya9ayF15J34jqFyY vFZ0qrySg3WxKFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: p1dqw5xldry3tdq6z05rqj20fqof0/ Received-SPF: pass client-ip=114.242.206.163; envelope-from=yangxiaojuan@loongson.cn; helo=loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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" Add LoongArch flatted device tree, adding cpu device node, firmware cfg node, pcie node into it, and create fdt rom memory region. Now fdt info is not full since only uefi bios uses fdt, linux kernel does not use fdt. Loongarch Linux kernel uses acpi table which is full in qemu virt machine. Signed-off-by: Xiaojuan Yang Reviewed-by: Richard Henderson --- hw/loongarch/loongson3.c | 136 +++++++++++++++++++++++++++++++++++- include/hw/loongarch/virt.h | 4 ++ target/loongarch/cpu.c | 1 + target/loongarch/cpu.h | 3 + 4 files changed, 141 insertions(+), 3 deletions(-) diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c index 45d1c60916..bdcd3a81cb 100644 --- a/hw/loongarch/loongson3.c +++ b/hw/loongarch/loongson3.c @@ -35,6 +35,129 @@ #include "qapi/qapi-visit-common.h" #include "hw/acpi/generic_event_device.h" #include "hw/mem/nvdimm.h" +#include "sysemu/device_tree.h" +#include + +static void create_fdt(LoongArchMachineState *lams) +{ + MachineState *ms = MACHINE(lams); + + ms->fdt = create_device_tree(&lams->fdt_size); + if (!ms->fdt) { + error_report("create_device_tree() failed"); + exit(1); + } + + /* Header */ + qemu_fdt_setprop_string(ms->fdt, "/", "compatible", + "linux,dummy-loongson3"); + qemu_fdt_setprop_cell(ms->fdt, "/", "#address-cells", 0x2); + qemu_fdt_setprop_cell(ms->fdt, "/", "#size-cells", 0x2); +} + +static void fdt_add_cpu_nodes(const LoongArchMachineState *lams) +{ + int num; + const MachineState *ms = MACHINE(lams); + int smp_cpus = ms->smp.cpus; + + qemu_fdt_add_subnode(ms->fdt, "/cpus"); + qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#address-cells", 0x1); + qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#size-cells", 0x0); + + /* cpu nodes */ + for (num = smp_cpus - 1; num >= 0; num--) { + char *nodename = g_strdup_printf("/cpus/cpu@%d", num); + LoongArchCPU *cpu = LOONGARCH_CPU(qemu_get_cpu(num)); + + qemu_fdt_add_subnode(ms->fdt, nodename); + qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "cpu"); + qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", + cpu->dtb_compatible); + qemu_fdt_setprop_cell(ms->fdt, nodename, "reg", num); + qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", + qemu_fdt_alloc_phandle(ms->fdt)); + g_free(nodename); + } + + /*cpu map */ + qemu_fdt_add_subnode(ms->fdt, "/cpus/cpu-map"); + + for (num = smp_cpus - 1; num >= 0; num--) { + char *cpu_path = g_strdup_printf("/cpus/cpu@%d", num); + char *map_path; + + if (ms->smp.threads > 1) { + map_path = g_strdup_printf( + "/cpus/cpu-map/socket%d/core%d/thread%d", + num / (ms->smp.cores * ms->smp.threads), + (num / ms->smp.threads) % ms->smp.cores, + num % ms->smp.threads); + } else { + map_path = g_strdup_printf( + "/cpus/cpu-map/socket%d/core%d", + num / ms->smp.cores, + num % ms->smp.cores); + } + qemu_fdt_add_path(ms->fdt, map_path); + qemu_fdt_setprop_phandle(ms->fdt, map_path, "cpu", cpu_path); + + g_free(map_path); + g_free(cpu_path); + } +} + +static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams) +{ + char *nodename; + hwaddr base = VIRT_FWCFG_BASE; + const MachineState *ms = MACHINE(lams); + + nodename = g_strdup_printf("/fw_cfg@%" PRIx64, base); + qemu_fdt_add_subnode(ms->fdt, nodename); + qemu_fdt_setprop_string(ms->fdt, nodename, + "compatible", "qemu,fw-cfg-mmio"); + qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", + 2, base, 2, 0x8); + qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); + g_free(nodename); +} + +static void fdt_add_pcie_node(const LoongArchMachineState *lams) +{ + char *nodename; + hwaddr base_mmio = LS7A_PCI_MEM_BASE; + hwaddr size_mmio = LS7A_PCI_MEM_SIZE; + hwaddr base_pio = LS7A_PCI_IO_BASE; + hwaddr size_pio = LS7A_PCI_IO_SIZE; + hwaddr base_pcie = LS_PCIECFG_BASE; + hwaddr size_pcie = LS_PCIECFG_SIZE; + hwaddr base = base_pcie; + + const MachineState *ms = MACHINE(lams); + + nodename = g_strdup_printf("/pcie@%" PRIx64, base); + qemu_fdt_add_subnode(ms->fdt, nodename); + qemu_fdt_setprop_string(ms->fdt, nodename, + "compatible", "pci-host-ecam-generic"); + qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "pci"); + qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 3); + qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 2); + qemu_fdt_setprop_cell(ms->fdt, nodename, "linux,pci-domain", 0); + qemu_fdt_setprop_cells(ms->fdt, nodename, "bus-range", 0, + PCIE_MMCFG_BUS(LS_PCIECFG_SIZE - 1)); + qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); + qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", + 2, base_pcie, 2, size_pcie); + qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges", + 1, FDT_PCI_RANGE_IOPORT, 2, LS7A_PCI_IO_OFFSET, + 2, base_pio, 2, size_pio, + 1, FDT_PCI_RANGE_MMIO, 2, base_mmio, + 2, base_mmio, 2, size_mmio); + g_free(nodename); + qemu_fdt_dumpdtb(ms->fdt, lams->fdt_size); +} + #define PM_BASE 0x10080000 #define PM_SIZE 0x100 @@ -530,12 +653,12 @@ static void loongarch_init(MachineState *machine) error_report("ram_size must be greater than 1G."); exit(1); } - + create_fdt(lams); /* Init CPUs */ for (i = 0; i < machine->smp.cpus; i++) { cpu_create(machine->cpu_type); } - + fdt_add_cpu_nodes(lams); /* Add memory region */ memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram", machine->ram, 0, 256 * MiB); @@ -558,12 +681,12 @@ static void loongarch_init(MachineState *machine) /* fw_cfg init */ lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine); rom_set_fw(lams->fw_cfg); - if (lams->fw_cfg != NULL) { fw_cfg_add_file(lams->fw_cfg, "etc/memmap", memmap_table, sizeof(struct memmap_entry) * (memmap_entries)); } + fdt_add_fw_cfg_node(lams); loaderparams.ram_size = ram_size; loaderparams.kernel_filename = machine->kernel_filename; loaderparams.kernel_cmdline = machine->kernel_cmdline; @@ -585,6 +708,13 @@ static void loongarch_init(MachineState *machine) loongarch_irq_init(lams); lams->machine_done.notify = virt_machine_done; qemu_add_machine_init_done_notifier(&lams->machine_done); + fdt_add_pcie_node(lams); + + /* load fdt */ + MemoryRegion *fdt_rom = g_new(MemoryRegion, 1); + memory_region_init_rom(fdt_rom, NULL, "fdt", LA_FDT_SIZE, &error_fatal); + memory_region_add_subregion(get_system_memory(), LA_FDT_BASE, fdt_rom); + rom_add_blob_fixed("fdt", machine->fdt, lams->fdt_size, LA_FDT_BASE); } bool loongarch_is_acpi_enabled(LoongArchMachineState *lams) diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index fb4a4f4e7b..f4f24df428 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -28,6 +28,9 @@ #define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN) #define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN) +#define LA_FDT_BASE 0x1c400000 +#define LA_FDT_SIZE 0x100000 + struct LoongArchMachineState { /*< private >*/ MachineState parent_obj; @@ -45,6 +48,7 @@ struct LoongArchMachineState { char *oem_id; char *oem_table_id; DeviceState *acpi_ged; + int fdt_size; }; #define TYPE_LOONGARCH_MACHINE MACHINE_TYPE_NAME("virt") diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 8e17b61a85..da67b84309 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -341,6 +341,7 @@ static void loongarch_la464_initfn(Object *obj) env->cpucfg[i] = 0x0; } + cpu->dtb_compatible = "loongarch,Loongson-3A5000"; env->cpucfg[0] = 0x14c010; /* PRID */ uint32_t data = 0; diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index d141ec9b5d..a36349df83 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -326,6 +326,9 @@ struct ArchCPU { CPUNegativeOffsetState neg; CPULoongArchState env; QEMUTimer timer; + + /* 'compatible' string for this CPU for Linux device trees */ + const char *dtb_compatible; }; #define TYPE_LOONGARCH_CPU "loongarch-cpu"