From patchwork Tue Sep 10 19:04:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Palmer Dabbelt X-Patchwork-Id: 11140685 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 BC43A112B for ; Wed, 11 Sep 2019 08:58:11 +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 8B52F2084D for ; Wed, 11 Sep 2019 08:58:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B52F2084D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sifive.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]:48180 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i7yS1-0002rZ-Qn for patchwork-qemu-devel@patchwork.kernel.org; Wed, 11 Sep 2019 04:58:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57617) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i7xwG-0008Cj-Tx for qemu-devel@nongnu.org; Wed, 11 Sep 2019 04:25:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i7xwF-0006me-0L for qemu-devel@nongnu.org; Wed, 11 Sep 2019 04:25:20 -0400 Received: from mail-wm1-f49.google.com ([209.85.128.49]:55432) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1i7xwE-0006mH-Pr for qemu-devel@nongnu.org; Wed, 11 Sep 2019 04:25:18 -0400 Received: by mail-wm1-f49.google.com with SMTP id g207so2321085wmg.5 for ; Wed, 11 Sep 2019 01:25:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:cc:from:to; bh=P7VabXfas9eiGrOMMiabUTjFR8zAzPPXsWhfGKuvZ/Y=; b=B2UofkxvRFXxEA9X+XQ9llbsjgfE74DIxif+eZnbW/LF7uu5bWmorumdcYzU4awBve Se2qYPb0d0U321mRolla7FWTU0SGCbgYOaaniDZfMX1NmBEE0o9iliHMyumQrid6IYCD jQLZXrbpY8F/NVWaIZLmGEtMPhe0Vyt5i5GJ1E+reg7oEmWfAuEsKvaXzws1VYGAmYjQ oqQhlvVAkoPWD84g5AGDSlIVWqcuHbkRqy+QYEOJ4/QrFTUXCLFb1iYhzoMFkFRy8BOt 2zgiKTCp5mXJYL9KK1F5WoUwbawGbWrV4r2UJ/J9igDwpYnOsMoEeHnO8JyMYUIPlALf 3KYw== X-Gm-Message-State: APjAAAXwdwdb739rbqRsjXJAoxHh3Jljc70sgWKCSO0THTOV2wQfPIFp OOQfok7oc+krgI0Qwlp/1ATamQ== X-Google-Smtp-Source: APXvYqy/n/wfaTc1XGGPyvsQA9FykrEUreXV0m89M3nsjkAuY5MkF2hH/ITZyib56KUJ6v+HeADZ7w== X-Received: by 2002:a05:600c:220c:: with SMTP id z12mr2982563wml.125.1568190317597; Wed, 11 Sep 2019 01:25:17 -0700 (PDT) Received: from localhost ([148.69.85.38]) by smtp.gmail.com with ESMTPSA id j1sm26305080wrg.24.2019.09.11.01.25.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2019 01:25:17 -0700 (PDT) Date: Tue, 10 Sep 2019 12:04:57 -0700 Message-Id: <20190910190513.21160-32-palmer@sifive.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190910190513.21160-1-palmer@sifive.com> References: <20190910190513.21160-1-palmer@sifive.com> MIME-Version: 1.0 From: Palmer Dabbelt To: Peter Maydell X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.128.49 Subject: [Qemu-devel] [PULL 31/47] riscv: sifive_u: Update hart configuration to reflect the real FU540 SoC 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: , Cc: Alistair Francis , Bin Meng , qemu-riscv@nongnu.org, qemu-devel@nongnu.org, Palmer Dabbelt Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Bin Meng The FU540-C000 includes a 64-bit E51 RISC-V core and four 64-bit U54 RISC-V cores. Currently the sifive_u machine only populates 4 U54 cores. Update the max cpu number to 5 to reflect the real hardware, by creating 2 CPU clusters as containers for RISC-V hart arrays to populate heterogeneous harts. The cpu nodes in the generated DTS have been updated as well. Signed-off-by: Bin Meng Reviewed-by: Alistair Francis Signed-off-by: Palmer Dabbelt --- hw/riscv/sifive_u.c | 92 +++++++++++++++++++++++++++---------- include/hw/riscv/sifive_u.h | 6 ++- 2 files changed, 72 insertions(+), 26 deletions(-) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 2023b71d53..6c4634dcac 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -11,7 +11,7 @@ * 2) PLIC (Platform Level Interrupt Controller) * * This board currently generates devicetree dynamically that indicates at least - * two harts. + * two harts and up to five harts. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -34,6 +34,7 @@ #include "hw/loader.h" #include "hw/sysbus.h" #include "hw/char/serial.h" +#include "hw/cpu/cluster.h" #include "target/riscv/cpu.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/sifive_plic.h" @@ -70,6 +71,7 @@ static const struct MemmapEntry { static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, uint64_t mem_size, const char *cmdline) { + MachineState *ms = MACHINE(qdev_get_machine()); void *fdt; int cpu; uint32_t *cells; @@ -110,15 +112,21 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); - for (cpu = s->soc.cpus.num_harts - 1; cpu >= 0; cpu--) { + for (cpu = ms->smp.cpus - 1; cpu >= 0; cpu--) { int cpu_phandle = phandle++; nodename = g_strdup_printf("/cpus/cpu@%d", cpu); char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); - char *isa = riscv_isa_string(&s->soc.cpus.harts[cpu]); + char *isa; qemu_fdt_add_subnode(fdt, nodename); qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", SIFIVE_U_CLOCK_FREQ); - qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); + /* cpu 0 is the management hart that does not have mmu */ + if (cpu != 0) { + qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); + isa = riscv_isa_string(&s->soc.u_cpus.harts[cpu - 1]); + } else { + isa = riscv_isa_string(&s->soc.e_cpus.harts[0]); + } qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa); qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv"); qemu_fdt_setprop_string(fdt, nodename, "status", "okay"); @@ -134,8 +142,8 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, g_free(nodename); } - cells = g_new0(uint32_t, s->soc.cpus.num_harts * 4); - for (cpu = 0; cpu < s->soc.cpus.num_harts; cpu++) { + cells = g_new0(uint32_t, ms->smp.cpus * 4); + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { nodename = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); @@ -153,20 +161,26 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, 0x0, memmap[SIFIVE_U_CLINT].base, 0x0, memmap[SIFIVE_U_CLINT].size); qemu_fdt_setprop(fdt, nodename, "interrupts-extended", - cells, s->soc.cpus.num_harts * sizeof(uint32_t) * 4); + cells, ms->smp.cpus * sizeof(uint32_t) * 4); g_free(cells); g_free(nodename); plic_phandle = phandle++; - cells = g_new0(uint32_t, s->soc.cpus.num_harts * 4); - for (cpu = 0; cpu < s->soc.cpus.num_harts; cpu++) { + cells = g_new0(uint32_t, ms->smp.cpus * 4 - 2); + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { nodename = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); - cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); - cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); - cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); - cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); + /* cpu 0 is the management hart that does not have S-mode */ + if (cpu == 0) { + cells[0] = cpu_to_be32(intc_phandle); + cells[1] = cpu_to_be32(IRQ_M_EXT); + } else { + cells[cpu * 4 - 2] = cpu_to_be32(intc_phandle); + cells[cpu * 4 - 1] = cpu_to_be32(IRQ_M_EXT); + cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); + cells[cpu * 4 + 1] = cpu_to_be32(IRQ_S_EXT); + } g_free(nodename); } nodename = g_strdup_printf("/soc/interrupt-controller@%lx", @@ -176,7 +190,7 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0"); qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); qemu_fdt_setprop(fdt, nodename, "interrupts-extended", - cells, s->soc.cpus.num_harts * sizeof(uint32_t) * 4); + cells, (ms->smp.cpus * 4 - 2) * sizeof(uint32_t)); qemu_fdt_setprop_cells(fdt, nodename, "reg", 0x0, memmap[SIFIVE_U_PLIC].base, 0x0, memmap[SIFIVE_U_PLIC].size); @@ -339,12 +353,31 @@ static void riscv_sifive_u_soc_init(Object *obj) MachineState *ms = MACHINE(qdev_get_machine()); SiFiveUSoCState *s = RISCV_U_SOC(obj); - object_initialize_child(obj, "cpus", &s->cpus, sizeof(s->cpus), - TYPE_RISCV_HART_ARRAY, &error_abort, NULL); - object_property_set_str(OBJECT(&s->cpus), SIFIVE_U_CPU, "cpu-type", - &error_abort); - object_property_set_int(OBJECT(&s->cpus), ms->smp.cpus, "num-harts", - &error_abort); + object_initialize_child(obj, "e-cluster", &s->e_cluster, + sizeof(s->e_cluster), TYPE_CPU_CLUSTER, + &error_abort, NULL); + qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0); + + object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", + &s->e_cpus, sizeof(s->e_cpus), + TYPE_RISCV_HART_ARRAY, &error_abort, + NULL); + qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1); + qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0); + qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", SIFIVE_E_CPU); + + object_initialize_child(obj, "u-cluster", &s->u_cluster, + sizeof(s->u_cluster), TYPE_CPU_CLUSTER, + &error_abort, NULL); + qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1); + + object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", + &s->u_cpus, sizeof(s->u_cpus), + TYPE_RISCV_HART_ARRAY, &error_abort, + NULL); + qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1); + qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1); + qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", SIFIVE_U_CPU); sysbus_init_child_obj(obj, "gem", &s->gem, sizeof(s->gem), TYPE_CADENCE_GEM); @@ -364,7 +397,19 @@ static void riscv_sifive_u_soc_realize(DeviceState *dev, Error **errp) Error *err = NULL; NICInfo *nd = &nd_table[0]; - object_property_set_bool(OBJECT(&s->cpus), true, "realized", + object_property_set_bool(OBJECT(&s->e_cpus), true, "realized", + &error_abort); + object_property_set_bool(OBJECT(&s->u_cpus), true, "realized", + &error_abort); + /* + * The cluster must be realized after the RISC-V hart array container, + * as the container's CPU object is only created on realize, and the + * CPU must exist and have been parented into the cluster before the + * cluster is realized. + */ + object_property_set_bool(OBJECT(&s->e_cluster), true, "realized", + &error_abort); + object_property_set_bool(OBJECT(&s->u_cluster), true, "realized", &error_abort); /* boot rom */ @@ -430,10 +475,7 @@ static void riscv_sifive_u_machine_init(MachineClass *mc) { mc->desc = "RISC-V Board compatible with SiFive U SDK"; mc->init = riscv_sifive_u_init; - /* The real hardware has 5 CPUs, but one of them is a small embedded power - * management CPU. - */ - mc->max_cpus = 4; + mc->max_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + SIFIVE_U_COMPUTE_CPU_COUNT; mc->min_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + 1; } diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h index 6d227410f8..6b2b5b68e2 100644 --- a/include/hw/riscv/sifive_u.h +++ b/include/hw/riscv/sifive_u.h @@ -32,7 +32,10 @@ typedef struct SiFiveUSoCState { SysBusDevice parent_obj; /*< public >*/ - RISCVHartArrayState cpus; + CPUClusterState e_cluster; + CPUClusterState u_cluster; + RISCVHartArrayState e_cpus; + RISCVHartArrayState u_cpus; DeviceState *plic; CadenceGEMState gem; } SiFiveUSoCState; @@ -70,6 +73,7 @@ enum { }; #define SIFIVE_U_MANAGEMENT_CPU_COUNT 1 +#define SIFIVE_U_COMPUTE_CPU_COUNT 4 #define SIFIVE_U_PLIC_HART_CONFIG "MS" #define SIFIVE_U_PLIC_NUM_SOURCES 54