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2d8f048c25
xemu/hw/arm/npcm7xx.c
Havard Skinnemoen 2d8f048c25 hw/arm: Add NPCM730 and NPCM750 SoC models 
The Nuvoton NPCM7xx SoC family are used to implement Baseboard
Management Controllers in servers. While the family includes four SoCs,
this patch implements limited support for two of them: NPCM730 (targeted
for Data Center applications) and NPCM750 (targeted for Enterprise
applications).

This patch includes little more than the bare minimum needed to boot a
Linux kernel built with NPCM7xx support in direct-kernel mode:

  - Two Cortex-A9 CPU cores with built-in periperhals.
  - Global Configuration Registers.
  - Clock Management.
  - 3 Timer Modules with 5 timers each.
  - 4 serial ports.

The chips themselves have a lot more features, some of which will be
added to the model at a later stage.

Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Message-id: 20200911052101.2602693-5-hskinnemoen@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-09-14 14:24:58 +01:00

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/*
* Nuvoton NPCM7xx SoC family.
*
* Copyright 2020 Google LLC
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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.
*/
#include "qemu/osdep.h"
#include "exec/address-spaces.h"
#include "hw/arm/boot.h"
#include "hw/arm/npcm7xx.h"
#include "hw/char/serial.h"
#include "hw/loader.h"
#include "hw/misc/unimp.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/units.h"
#include "sysemu/sysemu.h"
/*
* This covers the whole MMIO space. We'll use this to catch any MMIO accesses
* that aren't handled by any device.
*/
#define NPCM7XX_MMIO_BA (0x80000000)
#define NPCM7XX_MMIO_SZ (0x7ffd0000)
/* Core system modules. */
#define NPCM7XX_L2C_BA (0xf03fc000)
#define NPCM7XX_CPUP_BA (0xf03fe000)
#define NPCM7XX_GCR_BA (0xf0800000)
#define NPCM7XX_CLK_BA (0xf0801000)
/* Internal AHB SRAM */
#define NPCM7XX_RAM3_BA (0xc0008000)
#define NPCM7XX_RAM3_SZ (4 * KiB)
/* Memory blocks at the end of the address space */
#define NPCM7XX_RAM2_BA (0xfffd0000)
#define NPCM7XX_RAM2_SZ (128 * KiB)
#define NPCM7XX_ROM_BA (0xffff0000)
#define NPCM7XX_ROM_SZ (64 * KiB)
/*
* Interrupt lines going into the GIC. This does not include internal Cortex-A9
* interrupts.
*/
enum NPCM7xxInterrupt {
NPCM7XX_UART0_IRQ = 2,
NPCM7XX_UART1_IRQ,
NPCM7XX_UART2_IRQ,
NPCM7XX_UART3_IRQ,
NPCM7XX_TIMER0_IRQ = 32, /* Timer Module 0 */
NPCM7XX_TIMER1_IRQ,
NPCM7XX_TIMER2_IRQ,
NPCM7XX_TIMER3_IRQ,
NPCM7XX_TIMER4_IRQ,
NPCM7XX_TIMER5_IRQ, /* Timer Module 1 */
NPCM7XX_TIMER6_IRQ,
NPCM7XX_TIMER7_IRQ,
NPCM7XX_TIMER8_IRQ,
NPCM7XX_TIMER9_IRQ,
NPCM7XX_TIMER10_IRQ, /* Timer Module 2 */
NPCM7XX_TIMER11_IRQ,
NPCM7XX_TIMER12_IRQ,
NPCM7XX_TIMER13_IRQ,
NPCM7XX_TIMER14_IRQ,
};
/* Total number of GIC interrupts, including internal Cortex-A9 interrupts. */
#define NPCM7XX_NUM_IRQ (160)
/* Register base address for each Timer Module */
static const hwaddr npcm7xx_tim_addr[] = {
0xf0008000,
0xf0009000,
0xf000a000,
};
/* Register base address for each 16550 UART */
static const hwaddr npcm7xx_uart_addr[] = {
0xf0001000,
0xf0002000,
0xf0003000,
0xf0004000,
};
static void npcm7xx_write_secondary_boot(ARMCPU *cpu,
const struct arm_boot_info *info)
{
/*
* The default smpboot stub halts the secondary CPU with a 'wfi'
* instruction, but the arch/arm/mach-npcm/platsmp.c in the Linux kernel
* does not send an IPI to wake it up, so the second CPU fails to boot. So
* we need to provide our own smpboot stub that can not use 'wfi', it has
* to spin the secondary CPU until the first CPU writes to the SCRPAD reg.
*/
uint32_t smpboot[] = {
0xe59f2018, /* ldr r2, bootreg_addr */
0xe3a00000, /* mov r0, #0 */
0xe5820000, /* str r0, [r2] */
0xe320f002, /* wfe */
0xe5921000, /* ldr r1, [r2] */
0xe1110001, /* tst r1, r1 */
0x0afffffb, /* beq <wfe> */
0xe12fff11, /* bx r1 */
NPCM7XX_SMP_BOOTREG_ADDR,
};
int i;
for (i = 0; i < ARRAY_SIZE(smpboot); i++) {
smpboot[i] = tswap32(smpboot[i]);
}
rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
NPCM7XX_SMP_LOADER_START);
}
static struct arm_boot_info npcm7xx_binfo = {
.loader_start = NPCM7XX_LOADER_START,
.smp_loader_start = NPCM7XX_SMP_LOADER_START,
.smp_bootreg_addr = NPCM7XX_SMP_BOOTREG_ADDR,
.gic_cpu_if_addr = NPCM7XX_GIC_CPU_IF_ADDR,
.write_secondary_boot = npcm7xx_write_secondary_boot,
.board_id = -1,
};
void npcm7xx_load_kernel(MachineState *machine, NPCM7xxState *soc)
{
NPCM7xxClass *sc = NPCM7XX_GET_CLASS(soc);
npcm7xx_binfo.ram_size = machine->ram_size;
npcm7xx_binfo.nb_cpus = sc->num_cpus;
arm_load_kernel(&soc->cpu[0], machine, &npcm7xx_binfo);
}
static qemu_irq npcm7xx_irq(NPCM7xxState *s, int n)
{
return qdev_get_gpio_in(DEVICE(&s->a9mpcore), n);
}
static void npcm7xx_init(Object *obj)
{
NPCM7xxState *s = NPCM7XX(obj);
int i;
for (i = 0; i < NPCM7XX_MAX_NUM_CPUS; i++) {
object_initialize_child(obj, "cpu[*]", &s->cpu[i],
ARM_CPU_TYPE_NAME("cortex-a9"));
}
object_initialize_child(obj, "a9mpcore", &s->a9mpcore, TYPE_A9MPCORE_PRIV);
object_initialize_child(obj, "gcr", &s->gcr, TYPE_NPCM7XX_GCR);
object_property_add_alias(obj, "power-on-straps", OBJECT(&s->gcr),
"power-on-straps");
object_initialize_child(obj, "clk", &s->clk, TYPE_NPCM7XX_CLK);
for (i = 0; i < ARRAY_SIZE(s->tim); i++) {
object_initialize_child(obj, "tim[*]", &s->tim[i], TYPE_NPCM7XX_TIMER);
}
}
static void npcm7xx_realize(DeviceState *dev, Error **errp)
{
NPCM7xxState *s = NPCM7XX(dev);
NPCM7xxClass *nc = NPCM7XX_GET_CLASS(s);
int i;
if (memory_region_size(s->dram) > NPCM7XX_DRAM_SZ) {
error_setg(errp, "%s: NPCM7xx cannot address more than %" PRIu64
" MiB of DRAM", __func__, NPCM7XX_DRAM_SZ / MiB);
return;
}
/* CPUs */
for (i = 0; i < nc->num_cpus; i++) {
object_property_set_int(OBJECT(&s->cpu[i]), "mp-affinity",
arm_cpu_mp_affinity(i, NPCM7XX_MAX_NUM_CPUS),
&error_abort);
object_property_set_int(OBJECT(&s->cpu[i]), "reset-cbar",
NPCM7XX_GIC_CPU_IF_ADDR, &error_abort);
object_property_set_bool(OBJECT(&s->cpu[i]), "reset-hivecs", true,
&error_abort);
/* Disable security extensions. */
object_property_set_bool(OBJECT(&s->cpu[i]), "has_el3", false,
&error_abort);
if (!qdev_realize(DEVICE(&s->cpu[i]), NULL, errp)) {
return;
}
}
/* A9MPCORE peripherals. Can only fail if we pass bad parameters here. */
object_property_set_int(OBJECT(&s->a9mpcore), "num-cpu", nc->num_cpus,
&error_abort);
object_property_set_int(OBJECT(&s->a9mpcore), "num-irq", NPCM7XX_NUM_IRQ,
&error_abort);
sysbus_realize(SYS_BUS_DEVICE(&s->a9mpcore), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->a9mpcore), 0, NPCM7XX_CPUP_BA);
for (i = 0; i < nc->num_cpus; i++) {
sysbus_connect_irq(SYS_BUS_DEVICE(&s->a9mpcore), i,
qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->a9mpcore), i + nc->num_cpus,
qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_FIQ));
}
/* L2 cache controller */
sysbus_create_simple("l2x0", NPCM7XX_L2C_BA, NULL);
/* System Global Control Registers (GCR). Can fail due to user input. */
object_property_set_int(OBJECT(&s->gcr), "disabled-modules",
nc->disabled_modules, &error_abort);
object_property_add_const_link(OBJECT(&s->gcr), "dram-mr", OBJECT(s->dram));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gcr), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gcr), 0, NPCM7XX_GCR_BA);
/* Clock Control Registers (CLK). Cannot fail. */
sysbus_realize(SYS_BUS_DEVICE(&s->clk), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->clk), 0, NPCM7XX_CLK_BA);
/* Timer Modules (TIM). Cannot fail. */
QEMU_BUILD_BUG_ON(ARRAY_SIZE(npcm7xx_tim_addr) != ARRAY_SIZE(s->tim));
for (i = 0; i < ARRAY_SIZE(s->tim); i++) {
SysBusDevice *sbd = SYS_BUS_DEVICE(&s->tim[i]);
int first_irq;
int j;
sysbus_realize(sbd, &error_abort);
sysbus_mmio_map(sbd, 0, npcm7xx_tim_addr[i]);
first_irq = NPCM7XX_TIMER0_IRQ + i * NPCM7XX_TIMERS_PER_CTRL;
for (j = 0; j < NPCM7XX_TIMERS_PER_CTRL; j++) {
qemu_irq irq = npcm7xx_irq(s, first_irq + j);
sysbus_connect_irq(sbd, j, irq);
}
}
/* UART0..3 (16550 compatible) */
for (i = 0; i < ARRAY_SIZE(npcm7xx_uart_addr); i++) {
serial_mm_init(get_system_memory(), npcm7xx_uart_addr[i], 2,
npcm7xx_irq(s, NPCM7XX_UART0_IRQ + i), 115200,
serial_hd(i), DEVICE_LITTLE_ENDIAN);
}
/* RAM2 (SRAM) */
memory_region_init_ram(&s->sram, OBJECT(dev), "ram2",
NPCM7XX_RAM2_SZ, &error_abort);
memory_region_add_subregion(get_system_memory(), NPCM7XX_RAM2_BA, &s->sram);
/* RAM3 (SRAM) */
memory_region_init_ram(&s->ram3, OBJECT(dev), "ram3",
NPCM7XX_RAM3_SZ, &error_abort);
memory_region_add_subregion(get_system_memory(), NPCM7XX_RAM3_BA, &s->ram3);
/* Internal ROM */
memory_region_init_rom(&s->irom, OBJECT(dev), "irom", NPCM7XX_ROM_SZ,
&error_abort);
memory_region_add_subregion(get_system_memory(), NPCM7XX_ROM_BA, &s->irom);
create_unimplemented_device("npcm7xx.shm", 0xc0001000, 4 * KiB);
create_unimplemented_device("npcm7xx.vdmx", 0xe0800000, 4 * KiB);
create_unimplemented_device("npcm7xx.pcierc", 0xe1000000, 64 * KiB);
create_unimplemented_device("npcm7xx.kcs", 0xf0007000, 4 * KiB);
create_unimplemented_device("npcm7xx.rng", 0xf000b000, 4 * KiB);
create_unimplemented_device("npcm7xx.adc", 0xf000c000, 4 * KiB);
create_unimplemented_device("npcm7xx.gfxi", 0xf000e000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[0]", 0xf0010000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[1]", 0xf0011000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[2]", 0xf0012000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[3]", 0xf0013000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[4]", 0xf0014000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[5]", 0xf0015000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[6]", 0xf0016000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[7]", 0xf0017000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[0]", 0xf0080000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[1]", 0xf0081000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[2]", 0xf0082000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[3]", 0xf0083000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[4]", 0xf0084000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[5]", 0xf0085000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[6]", 0xf0086000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[7]", 0xf0087000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[8]", 0xf0088000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[9]", 0xf0089000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[10]", 0xf008a000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[11]", 0xf008b000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[12]", 0xf008c000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[13]", 0xf008d000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[14]", 0xf008e000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[15]", 0xf008f000, 4 * KiB);
create_unimplemented_device("npcm7xx.espi", 0xf009f000, 4 * KiB);
create_unimplemented_device("npcm7xx.peci", 0xf0100000, 4 * KiB);
create_unimplemented_device("npcm7xx.siox[1]", 0xf0101000, 4 * KiB);
create_unimplemented_device("npcm7xx.siox[2]", 0xf0102000, 4 * KiB);
create_unimplemented_device("npcm7xx.pwm[0]", 0xf0103000, 4 * KiB);
create_unimplemented_device("npcm7xx.pwm[1]", 0xf0104000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[0]", 0xf0180000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[1]", 0xf0181000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[2]", 0xf0182000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[3]", 0xf0183000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[4]", 0xf0184000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[5]", 0xf0185000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[6]", 0xf0186000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[7]", 0xf0187000, 4 * KiB);
create_unimplemented_device("npcm7xx.pspi1", 0xf0200000, 4 * KiB);
create_unimplemented_device("npcm7xx.pspi2", 0xf0201000, 4 * KiB);
create_unimplemented_device("npcm7xx.ahbpci", 0xf0400000, 1 * MiB);
create_unimplemented_device("npcm7xx.mcphy", 0xf05f0000, 64 * KiB);
create_unimplemented_device("npcm7xx.gmac1", 0xf0802000, 8 * KiB);
create_unimplemented_device("npcm7xx.gmac2", 0xf0804000, 8 * KiB);
create_unimplemented_device("npcm7xx.ehci", 0xf0806000, 4 * KiB);
create_unimplemented_device("npcm7xx.ohci", 0xf0807000, 4 * KiB);
create_unimplemented_device("npcm7xx.vcd", 0xf0810000, 64 * KiB);
create_unimplemented_device("npcm7xx.ece", 0xf0820000, 8 * KiB);
create_unimplemented_device("npcm7xx.vdma", 0xf0822000, 8 * KiB);
create_unimplemented_device("npcm7xx.emc1", 0xf0825000, 4 * KiB);
create_unimplemented_device("npcm7xx.emc2", 0xf0826000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[0]", 0xf0830000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[1]", 0xf0831000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[2]", 0xf0832000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[3]", 0xf0833000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[4]", 0xf0834000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[5]", 0xf0835000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[6]", 0xf0836000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[7]", 0xf0837000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[8]", 0xf0838000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[9]", 0xf0839000, 4 * KiB);
create_unimplemented_device("npcm7xx.sd", 0xf0840000, 8 * KiB);
create_unimplemented_device("npcm7xx.mmc", 0xf0842000, 8 * KiB);
create_unimplemented_device("npcm7xx.pcimbx", 0xf0848000, 512 * KiB);
create_unimplemented_device("npcm7xx.aes", 0xf0858000, 4 * KiB);
create_unimplemented_device("npcm7xx.des", 0xf0859000, 4 * KiB);
create_unimplemented_device("npcm7xx.sha", 0xf085a000, 4 * KiB);
create_unimplemented_device("npcm7xx.secacc", 0xf085b000, 4 * KiB);
create_unimplemented_device("npcm7xx.spixcs0", 0xf8000000, 16 * MiB);
create_unimplemented_device("npcm7xx.spixcs1", 0xf9000000, 16 * MiB);
create_unimplemented_device("npcm7xx.spix", 0xfb001000, 4 * KiB);
}
static Property npcm7xx_properties[] = {
DEFINE_PROP_LINK("dram-mr", NPCM7xxState, dram, TYPE_MEMORY_REGION,
MemoryRegion *),
DEFINE_PROP_END_OF_LIST(),
};
static void npcm7xx_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = npcm7xx_realize;
dc->user_creatable = false;
device_class_set_props(dc, npcm7xx_properties);
}
static void npcm730_class_init(ObjectClass *oc, void *data)
{
NPCM7xxClass *nc = NPCM7XX_CLASS(oc);
/* NPCM730 is optimized for data center use, so no graphics, etc. */
nc->disabled_modules = 0x00300395;
nc->num_cpus = 2;
}
static void npcm750_class_init(ObjectClass *oc, void *data)
{
NPCM7xxClass *nc = NPCM7XX_CLASS(oc);
/* NPCM750 has 2 cores and a full set of peripherals */
nc->disabled_modules = 0x00000000;
nc->num_cpus = 2;
}
static const TypeInfo npcm7xx_soc_types[] = {
{
.name = TYPE_NPCM7XX,
.parent = TYPE_DEVICE,
.instance_size = sizeof(NPCM7xxState),
.instance_init = npcm7xx_init,
.class_size = sizeof(NPCM7xxClass),
.class_init = npcm7xx_class_init,
.abstract = true,
}, {
.name = TYPE_NPCM730,
.parent = TYPE_NPCM7XX,
.class_init = npcm730_class_init,
}, {
.name = TYPE_NPCM750,
.parent = TYPE_NPCM7XX,
.class_init = npcm750_class_init,
},
};
DEFINE_TYPES(npcm7xx_soc_types);
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