From: Bin Meng <bmeng.cn@gmail.com> To: Alistair Francis <Alistair.Francis@wdc.com>, Palmer Dabbelt <palmer@sifive.com>, qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [Qemu-devel] [PATCH v4 14/28] riscv: sifive_u: Update hart configuration to reflect the real FU540 SoC Date: Sun, 18 Aug 2019 22:11:47 -0700 Message-ID: <1566191521-7820-15-git-send-email-bmeng.cn@gmail.com> (raw) In-Reply-To: <1566191521-7820-1-git-send-email-bmeng.cn@gmail.com> 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 <bmeng.cn@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> --- Changes in v4: - changed to create clusters for each cpu type Changes in v3: - changed to use macros for management and compute cpu count Changes in v2: - fixed the "interrupts-extended" property size hw/riscv/sifive_u.c | 102 +++++++++++++++++++++++++++++++++----------- include/hw/riscv/sifive_u.h | 8 +++- 2 files changed, 84 insertions(+), 26 deletions(-) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 3f58f61..0e5bbe7 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -10,7 +10,8 @@ * 1) CLINT (Core Level Interruptor) * 2) PLIC (Platform Level Interrupt Controller) * - * This board currently uses a hardcoded devicetree that indicates one hart. + * This board currently generates devicetree dynamically that indicates at most + * 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, @@ -26,6 +27,7 @@ */ #include "qemu/osdep.h" +#include "qemu/cutils.h" #include "qemu/log.h" #include "qemu/error-report.h" #include "qapi/error.h" @@ -34,6 +36,7 @@ #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" @@ -69,6 +72,7 @@ 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; @@ -109,15 +113,21 @@ 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"); @@ -133,8 +143,8 @@ 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); @@ -152,20 +162,26 @@ 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", @@ -175,7 +191,7 @@ 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); @@ -338,12 +354,39 @@ 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); + object_property_set_uint(OBJECT(&s->e_cpus), 1, + "num-harts", &error_abort); + object_property_set_uint(OBJECT(&s->e_cpus), 0, + "hartid-base", &error_abort); + object_property_set_str(OBJECT(&s->e_cpus), SIFIVE_E_CPU, + "cpu-type", &error_abort); + + if (ms->smp.cpus > 1) { + 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); + object_property_set_uint(OBJECT(&s->u_cpus), ms->smp.cpus - 1, + "num-harts", &error_abort); + object_property_set_uint(OBJECT(&s->u_cpus), 1, + "hartid-base", &error_abort); + object_property_set_str(OBJECT(&s->u_cpus), SIFIVE_U_CPU, + "cpu-type", &error_abort); + } sysbus_init_child_obj(obj, "gem", &s->gem, sizeof(s->gem), TYPE_CADENCE_GEM); @@ -363,7 +406,19 @@ 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 */ @@ -429,10 +484,7 @@ 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; } DEFINE_MACHINE("sifive_u", riscv_sifive_u_machine_init) diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h index 4abc621..7a1a4f3 100644 --- a/include/hw/riscv/sifive_u.h +++ b/include/hw/riscv/sifive_u.h @@ -31,7 +31,10 @@ 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; @@ -68,6 +71,9 @@ enum { SIFIVE_U_GEM_CLOCK_FREQ = 125000000 }; +#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 #define SIFIVE_U_PLIC_NUM_PRIORITIES 7 -- 2.7.4
next prev parent reply index Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-19 5:11 [Qemu-devel] [PATCH v4 00/28] riscv: sifive_u: Improve the emulation fidelity of sifive_u machine Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 01/28] riscv: hw: Remove superfluous "linux, phandle" property Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 02/28] riscv: hw: Use qemu_fdt_setprop_cell() for property with only 1 cell Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 03/28] riscv: hw: Remove not needed PLIC properties in device tree Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 04/28] riscv: hw: Change create_fdt() to return void Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 05/28] riscv: roms: Remove executable attribute of opensbi images Bin Meng 2019-08-19 20:08 ` Alistair Francis 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 06/28] riscv: sifive_u: Remove the unnecessary include of prci header Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 07/28] riscv: sifive: Rename sifive_prci.{c, h} to sifive_e_prci.{c, h} Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 08/28] riscv: sifive_e: prci: Fix a typo of hfxosccfg register programming Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 09/28] riscv: sifive_e: prci: Update the PRCI register block size Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 11/28] riscv: Add a sifive_cpu.h to include both E and U cpu type defines Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 12/28] riscv: hart: Extract hart realize to a separate routine Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 13/28] riscv: hart: Add a "hartid-base" property to RISC-V hart array Bin Meng 2019-08-22 22:40 ` Alistair Francis 2019-08-23 1:57 ` Bin Meng 2019-08-19 5:11 ` Bin Meng [this message] 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 15/28] riscv: sifive_u: Set the minimum number of cpus to 2 Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 16/28] riscv: sifive_u: Update PLIC hart topology configuration string Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 17/28] riscv: sifive: Implement PRCI model for FU540 Bin Meng 2019-08-19 20:21 ` Alistair Francis 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 18/28] riscv: sifive_u: Generate hfclk and rtcclk nodes Bin Meng 2019-08-19 20:22 ` Alistair Francis 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 19/28] riscv: sifive_u: Add PRCI block to the SoC Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 20/28] riscv: sifive_u: Reference PRCI clocks in UART and ethernet nodes Bin Meng 2019-08-20 18:26 ` Alistair Francis 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 21/28] riscv: sifive_u: Update UART base addresses and IRQs Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 22/28] riscv: sifive_u: Change UART node name in device tree Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 23/28] riscv: roms: Update default bios for sifive_u machine Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 24/28] riscv: sifive: Implement a model for SiFive FU540 OTP Bin Meng 2019-08-22 22:41 ` Alistair Francis 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 25/28] riscv: sifive_u: Instantiate OTP memory with a serial number Bin Meng 2019-08-19 5:11 ` [Qemu-devel] [PATCH v4 26/28] riscv: sifive_u: Fix broken GEM support Bin Meng 2019-08-19 5:12 ` [Qemu-devel] [PATCH v4 27/28] riscv: sifive_u: Remove handcrafted clock nodes for UART and ethernet Bin Meng 2019-08-22 22:39 ` Alistair Francis 2019-08-19 5:12 ` [Qemu-devel] [PATCH v4 28/28] riscv: sifive_u: Update model and compatible strings in device tree Bin Meng
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