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08b86e3b8f
qemu/hw/riscv/microchip_pfsoc.c
Bin Meng 08b86e3b8f hw/riscv: microchip_pfsoc: Document where to look at the SoC memory maps 
It is not easy to find out the memory map for a specific component
in the PolarFire SoC as the information is scattered in different
documents. Add some comments so that people can know where to get
such information from the Microchip website.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1603863010-15807-2-git-send-email-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-11-03 07:17:23 -08:00

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/*
* QEMU RISC-V Board Compatible with Microchip PolarFire SoC Icicle Kit
*
* Copyright (c) 2020 Wind River Systems, Inc.
*
* Author:
* Bin Meng <bin.meng@windriver.com>
*
* Provides a board compatible with the Microchip PolarFire SoC Icicle Kit
*
* 0) CLINT (Core Level Interruptor)
* 1) PLIC (Platform Level Interrupt Controller)
* 2) eNVM (Embedded Non-Volatile Memory)
* 3) MMUARTs (Multi-Mode UART)
* 4) Cadence eMMC/SDHC controller and an SD card connected to it
* 5) SiFive Platform DMA (Direct Memory Access Controller)
* 6) GEM (Gigabit Ethernet MAC Controller)
*
* This board currently generates devicetree dynamically that indicates at least
* 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,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/log.h"
#include "qemu/units.h"
#include "qemu/cutils.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/irq.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#include "chardev/char.h"
#include "hw/cpu/cluster.h"
#include "target/riscv/cpu.h"
#include "hw/misc/unimp.h"
#include "hw/riscv/boot.h"
#include "hw/riscv/riscv_hart.h"
#include "hw/riscv/microchip_pfsoc.h"
#include "hw/intc/sifive_clint.h"
#include "hw/intc/sifive_plic.h"
#include "sysemu/sysemu.h"
/*
* The BIOS image used by this machine is called Hart Software Services (HSS).
* See https://github.com/polarfire-soc/hart-software-services
*/
#define BIOS_FILENAME "hss.bin"
#define RESET_VECTOR 0x20220000
/* CLINT timebase frequency */
#define CLINT_TIMEBASE_FREQ 1000000
/* GEM version */
#define GEM_REVISION 0x0107010c
/*
* The complete description of the whole PolarFire SoC memory map is scattered
* in different documents. There are several places to look at for memory maps:
*
* 1 Chapter 11 "MSS Memory Map", in the doc "UG0880: PolarFire SoC FPGA
* Microprocessor Subsystem (MSS) User Guide", which can be downloaded from
* https://www.microsemi.com/document-portal/doc_download/
* 1244570-ug0880-polarfire-soc-fpga-microprocessor-subsystem-mss-user-guide,
* describes the whole picture of the PolarFire SoC memory map.
*
* 2 A zip file for PolarFire soC memory map, which can be downloaded from
* https://www.microsemi.com/document-portal/doc_download/
* 1244581-polarfire-soc-register-map, contains the following 2 major parts:
* - Register Map/PF_SoC_RegMap_V1_1/pfsoc_regmap.htm
* describes the complete integrated peripherals memory map
* - Register Map/PF_SoC_RegMap_V1_1/MPFS250T/mpfs250t_ioscb_memmap_dri.htm
* describes the complete IOSCB modules memory maps
*/
static const struct MemmapEntry {
hwaddr base;
hwaddr size;
} microchip_pfsoc_memmap[] = {
[MICROCHIP_PFSOC_DEBUG] = { 0x0, 0x1000 },
[MICROCHIP_PFSOC_E51_DTIM] = { 0x1000000, 0x2000 },
[MICROCHIP_PFSOC_BUSERR_UNIT0] = { 0x1700000, 0x1000 },
[MICROCHIP_PFSOC_BUSERR_UNIT1] = { 0x1701000, 0x1000 },
[MICROCHIP_PFSOC_BUSERR_UNIT2] = { 0x1702000, 0x1000 },
[MICROCHIP_PFSOC_BUSERR_UNIT3] = { 0x1703000, 0x1000 },
[MICROCHIP_PFSOC_BUSERR_UNIT4] = { 0x1704000, 0x1000 },
[MICROCHIP_PFSOC_CLINT] = { 0x2000000, 0x10000 },
[MICROCHIP_PFSOC_L2CC] = { 0x2010000, 0x1000 },
[MICROCHIP_PFSOC_DMA] = { 0x3000000, 0x100000 },
[MICROCHIP_PFSOC_L2LIM] = { 0x8000000, 0x2000000 },
[MICROCHIP_PFSOC_PLIC] = { 0xc000000, 0x4000000 },
[MICROCHIP_PFSOC_MMUART0] = { 0x20000000, 0x1000 },
[MICROCHIP_PFSOC_SYSREG] = { 0x20002000, 0x2000 },
[MICROCHIP_PFSOC_MPUCFG] = { 0x20005000, 0x1000 },
[MICROCHIP_PFSOC_EMMC_SD] = { 0x20008000, 0x1000 },
[MICROCHIP_PFSOC_MMUART1] = { 0x20100000, 0x1000 },
[MICROCHIP_PFSOC_MMUART2] = { 0x20102000, 0x1000 },
[MICROCHIP_PFSOC_MMUART3] = { 0x20104000, 0x1000 },
[MICROCHIP_PFSOC_MMUART4] = { 0x20106000, 0x1000 },
[MICROCHIP_PFSOC_GEM0] = { 0x20110000, 0x2000 },
[MICROCHIP_PFSOC_GEM1] = { 0x20112000, 0x2000 },
[MICROCHIP_PFSOC_GPIO0] = { 0x20120000, 0x1000 },
[MICROCHIP_PFSOC_GPIO1] = { 0x20121000, 0x1000 },
[MICROCHIP_PFSOC_GPIO2] = { 0x20122000, 0x1000 },
[MICROCHIP_PFSOC_ENVM_CFG] = { 0x20200000, 0x1000 },
[MICROCHIP_PFSOC_ENVM_DATA] = { 0x20220000, 0x20000 },
[MICROCHIP_PFSOC_IOSCB_CFG] = { 0x37080000, 0x1000 },
[MICROCHIP_PFSOC_DRAM] = { 0x80000000, 0x0 },
};
static void microchip_pfsoc_soc_instance_init(Object *obj)
{
MachineState *ms = MACHINE(qdev_get_machine());
MicrochipPFSoCState *s = MICROCHIP_PFSOC(obj);
object_initialize_child(obj, "e-cluster", &s->e_cluster, TYPE_CPU_CLUSTER);
qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0);
object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", &s->e_cpus,
TYPE_RISCV_HART_ARRAY);
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",
TYPE_RISCV_CPU_SIFIVE_E51);
qdev_prop_set_uint64(DEVICE(&s->e_cpus), "resetvec", RESET_VECTOR);
object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER);
qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1);
object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", &s->u_cpus,
TYPE_RISCV_HART_ARRAY);
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",
TYPE_RISCV_CPU_SIFIVE_U54);
qdev_prop_set_uint64(DEVICE(&s->u_cpus), "resetvec", RESET_VECTOR);
object_initialize_child(obj, "dma-controller", &s->dma,
TYPE_SIFIVE_PDMA);
object_initialize_child(obj, "gem0", &s->gem0, TYPE_CADENCE_GEM);
object_initialize_child(obj, "gem1", &s->gem1, TYPE_CADENCE_GEM);
object_initialize_child(obj, "sd-controller", &s->sdhci,
TYPE_CADENCE_SDHCI);
}
static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
MicrochipPFSoCState *s = MICROCHIP_PFSOC(dev);
const struct MemmapEntry *memmap = microchip_pfsoc_memmap;
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *e51_dtim_mem = g_new(MemoryRegion, 1);
MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1);
MemoryRegion *envm_data = g_new(MemoryRegion, 1);
char *plic_hart_config;
size_t plic_hart_config_len;
NICInfo *nd;
int i;
sysbus_realize(SYS_BUS_DEVICE(&s->e_cpus), &error_abort);
sysbus_realize(SYS_BUS_DEVICE(&s->u_cpus), &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.
*/
qdev_realize(DEVICE(&s->e_cluster), NULL, &error_abort);
qdev_realize(DEVICE(&s->u_cluster), NULL, &error_abort);
/* E51 DTIM */
memory_region_init_ram(e51_dtim_mem, NULL, "microchip.pfsoc.e51_dtim_mem",
memmap[MICROCHIP_PFSOC_E51_DTIM].size, &error_fatal);
memory_region_add_subregion(system_memory,
memmap[MICROCHIP_PFSOC_E51_DTIM].base,
e51_dtim_mem);
/* Bus Error Units */
create_unimplemented_device("microchip.pfsoc.buserr_unit0_mem",
memmap[MICROCHIP_PFSOC_BUSERR_UNIT0].base,
memmap[MICROCHIP_PFSOC_BUSERR_UNIT0].size);
create_unimplemented_device("microchip.pfsoc.buserr_unit1_mem",
memmap[MICROCHIP_PFSOC_BUSERR_UNIT1].base,
memmap[MICROCHIP_PFSOC_BUSERR_UNIT1].size);
create_unimplemented_device("microchip.pfsoc.buserr_unit2_mem",
memmap[MICROCHIP_PFSOC_BUSERR_UNIT2].base,
memmap[MICROCHIP_PFSOC_BUSERR_UNIT2].size);
create_unimplemented_device("microchip.pfsoc.buserr_unit3_mem",
memmap[MICROCHIP_PFSOC_BUSERR_UNIT3].base,
memmap[MICROCHIP_PFSOC_BUSERR_UNIT3].size);
create_unimplemented_device("microchip.pfsoc.buserr_unit4_mem",
memmap[MICROCHIP_PFSOC_BUSERR_UNIT4].base,
memmap[MICROCHIP_PFSOC_BUSERR_UNIT4].size);
/* CLINT */
sifive_clint_create(memmap[MICROCHIP_PFSOC_CLINT].base,
memmap[MICROCHIP_PFSOC_CLINT].size, 0, ms->smp.cpus,
SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE,
CLINT_TIMEBASE_FREQ, false);
/* L2 cache controller */
create_unimplemented_device("microchip.pfsoc.l2cc",
memmap[MICROCHIP_PFSOC_L2CC].base, memmap[MICROCHIP_PFSOC_L2CC].size);
/*
* Add L2-LIM at reset size.
* This should be reduced in size as the L2 Cache Controller WayEnable
* register is incremented. Unfortunately I don't see a nice (or any) way
* to handle reducing or blocking out the L2 LIM while still allowing it
* be re returned to all enabled after a reset. For the time being, just
* leave it enabled all the time. This won't break anything, but will be
* too generous to misbehaving guests.
*/
memory_region_init_ram(l2lim_mem, NULL, "microchip.pfsoc.l2lim",
memmap[MICROCHIP_PFSOC_L2LIM].size, &error_fatal);
memory_region_add_subregion(system_memory,
memmap[MICROCHIP_PFSOC_L2LIM].base,
l2lim_mem);
/* create PLIC hart topology configuration string */
plic_hart_config_len = (strlen(MICROCHIP_PFSOC_PLIC_HART_CONFIG) + 1) *
ms->smp.cpus;
plic_hart_config = g_malloc0(plic_hart_config_len);
for (i = 0; i < ms->smp.cpus; i++) {
if (i != 0) {
strncat(plic_hart_config, "," MICROCHIP_PFSOC_PLIC_HART_CONFIG,
plic_hart_config_len);
} else {
strncat(plic_hart_config, "M", plic_hart_config_len);
}
plic_hart_config_len -= (strlen(MICROCHIP_PFSOC_PLIC_HART_CONFIG) + 1);
}
/* PLIC */
s->plic = sifive_plic_create(memmap[MICROCHIP_PFSOC_PLIC].base,
plic_hart_config, 0,
MICROCHIP_PFSOC_PLIC_NUM_SOURCES,
MICROCHIP_PFSOC_PLIC_NUM_PRIORITIES,
MICROCHIP_PFSOC_PLIC_PRIORITY_BASE,
MICROCHIP_PFSOC_PLIC_PENDING_BASE,
MICROCHIP_PFSOC_PLIC_ENABLE_BASE,
MICROCHIP_PFSOC_PLIC_ENABLE_STRIDE,
MICROCHIP_PFSOC_PLIC_CONTEXT_BASE,
MICROCHIP_PFSOC_PLIC_CONTEXT_STRIDE,
memmap[MICROCHIP_PFSOC_PLIC].size);
g_free(plic_hart_config);
/* DMA */
sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->dma), 0,
memmap[MICROCHIP_PFSOC_DMA].base);
for (i = 0; i < SIFIVE_PDMA_IRQS; i++) {
sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), i,
qdev_get_gpio_in(DEVICE(s->plic),
MICROCHIP_PFSOC_DMA_IRQ0 + i));
}
/* SYSREG */
create_unimplemented_device("microchip.pfsoc.sysreg",
memmap[MICROCHIP_PFSOC_SYSREG].base,
memmap[MICROCHIP_PFSOC_SYSREG].size);
/* MPUCFG */
create_unimplemented_device("microchip.pfsoc.mpucfg",
memmap[MICROCHIP_PFSOC_MPUCFG].base,
memmap[MICROCHIP_PFSOC_MPUCFG].size);
/* SDHCI */
sysbus_realize(SYS_BUS_DEVICE(&s->sdhci), errp);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->sdhci), 0,
memmap[MICROCHIP_PFSOC_EMMC_SD].base);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_EMMC_SD_IRQ));
/* MMUARTs */
s->serial0 = mchp_pfsoc_mmuart_create(system_memory,
memmap[MICROCHIP_PFSOC_MMUART0].base,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART0_IRQ),
serial_hd(0));
s->serial1 = mchp_pfsoc_mmuart_create(system_memory,
memmap[MICROCHIP_PFSOC_MMUART1].base,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART1_IRQ),
serial_hd(1));
s->serial2 = mchp_pfsoc_mmuart_create(system_memory,
memmap[MICROCHIP_PFSOC_MMUART2].base,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART2_IRQ),
serial_hd(2));
s->serial3 = mchp_pfsoc_mmuart_create(system_memory,
memmap[MICROCHIP_PFSOC_MMUART3].base,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART3_IRQ),
serial_hd(3));
s->serial4 = mchp_pfsoc_mmuart_create(system_memory,
memmap[MICROCHIP_PFSOC_MMUART4].base,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART4_IRQ),
serial_hd(4));
/* GEMs */
nd = &nd_table[0];
if (nd->used) {
qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
qdev_set_nic_properties(DEVICE(&s->gem0), nd);
}
nd = &nd_table[1];
if (nd->used) {
qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
qdev_set_nic_properties(DEVICE(&s->gem1), nd);
}
object_property_set_int(OBJECT(&s->gem0), "revision", GEM_REVISION, errp);
object_property_set_int(OBJECT(&s->gem0), "phy-addr", 8, errp);
sysbus_realize(SYS_BUS_DEVICE(&s->gem0), errp);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gem0), 0,
memmap[MICROCHIP_PFSOC_GEM0].base);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem0), 0,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_GEM0_IRQ));
object_property_set_int(OBJECT(&s->gem1), "revision", GEM_REVISION, errp);
object_property_set_int(OBJECT(&s->gem1), "phy-addr", 9, errp);
sysbus_realize(SYS_BUS_DEVICE(&s->gem1), errp);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gem1), 0,
memmap[MICROCHIP_PFSOC_GEM1].base);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem1), 0,
qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_GEM1_IRQ));
/* GPIOs */
create_unimplemented_device("microchip.pfsoc.gpio0",
memmap[MICROCHIP_PFSOC_GPIO0].base,
memmap[MICROCHIP_PFSOC_GPIO0].size);
create_unimplemented_device("microchip.pfsoc.gpio1",
memmap[MICROCHIP_PFSOC_GPIO1].base,
memmap[MICROCHIP_PFSOC_GPIO1].size);
create_unimplemented_device("microchip.pfsoc.gpio2",
memmap[MICROCHIP_PFSOC_GPIO2].base,
memmap[MICROCHIP_PFSOC_GPIO2].size);
/* eNVM */
memory_region_init_rom(envm_data, OBJECT(dev), "microchip.pfsoc.envm.data",
memmap[MICROCHIP_PFSOC_ENVM_DATA].size,
&error_fatal);
memory_region_add_subregion(system_memory,
memmap[MICROCHIP_PFSOC_ENVM_DATA].base,
envm_data);
/* IOSCBCFG */
create_unimplemented_device("microchip.pfsoc.ioscb.cfg",
memmap[MICROCHIP_PFSOC_IOSCB_CFG].base,
memmap[MICROCHIP_PFSOC_IOSCB_CFG].size);
}
static void microchip_pfsoc_soc_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = microchip_pfsoc_soc_realize;
/* Reason: Uses serial_hds in realize function, thus can't be used twice */
dc->user_creatable = false;
}
static const TypeInfo microchip_pfsoc_soc_type_info = {
.name = TYPE_MICROCHIP_PFSOC,
.parent = TYPE_DEVICE,
.instance_size = sizeof(MicrochipPFSoCState),
.instance_init = microchip_pfsoc_soc_instance_init,
.class_init = microchip_pfsoc_soc_class_init,
};
static void microchip_pfsoc_soc_register_types(void)
{
type_register_static(&microchip_pfsoc_soc_type_info);
}
type_init(microchip_pfsoc_soc_register_types)
static void microchip_icicle_kit_machine_init(MachineState *machine)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
const struct MemmapEntry *memmap = microchip_pfsoc_memmap;
MicrochipIcicleKitState *s = MICROCHIP_ICICLE_KIT_MACHINE(machine);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
DriveInfo *dinfo = drive_get_next(IF_SD);
/* Sanity check on RAM size */
if (machine->ram_size < mc->default_ram_size) {
char *sz = size_to_str(mc->default_ram_size);
error_report("Invalid RAM size, should be bigger than %s", sz);
g_free(sz);
exit(EXIT_FAILURE);
}
/* Initialize SoC */
object_initialize_child(OBJECT(machine), "soc", &s->soc,
TYPE_MICROCHIP_PFSOC);
qdev_realize(DEVICE(&s->soc), NULL, &error_abort);
/* Register RAM */
memory_region_init_ram(main_mem, NULL, "microchip.icicle.kit.ram",
machine->ram_size, &error_fatal);
memory_region_add_subregion(system_memory,
memmap[MICROCHIP_PFSOC_DRAM].base, main_mem);
/* Load the firmware */
riscv_find_and_load_firmware(machine, BIOS_FILENAME, RESET_VECTOR, NULL);
/* Attach an SD card */
if (dinfo) {
CadenceSDHCIState *sdhci = &(s->soc.sdhci);
DeviceState *card = qdev_new(TYPE_SD_CARD);
qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
&error_fatal);
qdev_realize_and_unref(card, sdhci->bus, &error_fatal);
}
}
static void microchip_icicle_kit_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "Microchip PolarFire SoC Icicle Kit";
mc->init = microchip_icicle_kit_machine_init;
mc->max_cpus = MICROCHIP_PFSOC_MANAGEMENT_CPU_COUNT +
MICROCHIP_PFSOC_COMPUTE_CPU_COUNT;
mc->min_cpus = MICROCHIP_PFSOC_MANAGEMENT_CPU_COUNT + 1;
mc->default_cpus = mc->min_cpus;
mc->default_ram_size = 1 * GiB;
}
static const TypeInfo microchip_icicle_kit_machine_typeinfo = {
.name = MACHINE_TYPE_NAME("microchip-icicle-kit"),
.parent = TYPE_MACHINE,
.class_init = microchip_icicle_kit_machine_class_init,
.instance_size = sizeof(MicrochipIcicleKitState),
};
static void microchip_icicle_kit_machine_init_register_types(void)
{
type_register_static(&microchip_icicle_kit_machine_typeinfo);
}
type_init(microchip_icicle_kit_machine_init_register_types)
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