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qemu/hw/arm/exynos4210.c
Krzysztof Kozlowski f3a6339a5b hw/arm/exynos: Fix proper mapping of CPUs by providing real cluster ID 
The Exynos4210 has cluster ID 0x9 in its MPIDR register (raw value
0x8000090x).  If this cluster ID is not provided, then Linux kernel
cannot map DeviceTree nodes to MPIDR values resulting in kernel
warning and lack of any secondary CPUs:

    DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map
    ...
    smp: Bringing up secondary CPUs ...
    smp: Brought up 1 node, 1 CPU
    SMP: Total of 1 processors activated (24.00 BogoMIPS).

Provide a cluster ID so Linux will see proper MPIDR and will try to
bring the secondary CPU online.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-id: 20170226200142.31169-2-krzk@kernel.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-02-28 12:08:20 +00:00

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/*
* Samsung exynos4210 SoC emulation
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd. All rights reserved.
* Maksim Kozlov <m.kozlov@samsung.com>
* Evgeny Voevodin <e.voevodin@samsung.com>
* Igor Mitsyanko <i.mitsyanko@samsung.com>
*
* 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.
*
* 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 "qapi/error.h"
#include "qemu-common.h"
#include "qemu/log.h"
#include "cpu.h"
#include "hw/boards.h"
#include "sysemu/sysemu.h"
#include "hw/sysbus.h"
#include "hw/arm/arm.h"
#include "hw/loader.h"
#include "hw/arm/exynos4210.h"
#include "hw/usb/hcd-ehci.h"
#define EXYNOS4210_CHIPID_ADDR 0x10000000
/* PWM */
#define EXYNOS4210_PWM_BASE_ADDR 0x139D0000
/* RTC */
#define EXYNOS4210_RTC_BASE_ADDR 0x10070000
/* MCT */
#define EXYNOS4210_MCT_BASE_ADDR 0x10050000
/* I2C */
#define EXYNOS4210_I2C_SHIFT 0x00010000
#define EXYNOS4210_I2C_BASE_ADDR 0x13860000
/* Interrupt Group of External Interrupt Combiner for I2C */
#define EXYNOS4210_I2C_INTG 27
#define EXYNOS4210_HDMI_INTG 16
/* UART's definitions */
#define EXYNOS4210_UART0_BASE_ADDR 0x13800000
#define EXYNOS4210_UART1_BASE_ADDR 0x13810000
#define EXYNOS4210_UART2_BASE_ADDR 0x13820000
#define EXYNOS4210_UART3_BASE_ADDR 0x13830000
#define EXYNOS4210_UART0_FIFO_SIZE 256
#define EXYNOS4210_UART1_FIFO_SIZE 64
#define EXYNOS4210_UART2_FIFO_SIZE 16
#define EXYNOS4210_UART3_FIFO_SIZE 16
/* Interrupt Group of External Interrupt Combiner for UART */
#define EXYNOS4210_UART_INT_GRP 26
/* External GIC */
#define EXYNOS4210_EXT_GIC_CPU_BASE_ADDR 0x10480000
#define EXYNOS4210_EXT_GIC_DIST_BASE_ADDR 0x10490000
/* Combiner */
#define EXYNOS4210_EXT_COMBINER_BASE_ADDR 0x10440000
#define EXYNOS4210_INT_COMBINER_BASE_ADDR 0x10448000
/* PMU SFR base address */
#define EXYNOS4210_PMU_BASE_ADDR 0x10020000
/* Clock controller SFR base address */
#define EXYNOS4210_CLK_BASE_ADDR 0x10030000
/* Display controllers (FIMD) */
#define EXYNOS4210_FIMD0_BASE_ADDR 0x11C00000
/* EHCI */
#define EXYNOS4210_EHCI_BASE_ADDR 0x12580000
static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,
0x09, 0x00, 0x00, 0x00 };
static uint64_t exynos4210_chipid_and_omr_read(void *opaque, hwaddr offset,
unsigned size)
{
assert(offset < sizeof(chipid_and_omr));
return chipid_and_omr[offset];
}
static void exynos4210_chipid_and_omr_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
return;
}
static const MemoryRegionOps exynos4210_chipid_and_omr_ops = {
.read = exynos4210_chipid_and_omr_read,
.write = exynos4210_chipid_and_omr_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.max_access_size = 1,
}
};
void exynos4210_write_secondary(ARMCPU *cpu,
const struct arm_boot_info *info)
{
int n;
uint32_t smpboot[] = {
0xe59f3034, /* ldr r3, External gic_cpu_if */
0xe59f2034, /* ldr r2, Internal gic_cpu_if */
0xe59f0034, /* ldr r0, startaddr */
0xe3a01001, /* mov r1, #1 */
0xe5821000, /* str r1, [r2] */
0xe5831000, /* str r1, [r3] */
0xe3a010ff, /* mov r1, #0xff */
0xe5821004, /* str r1, [r2, #4] */
0xe5831004, /* str r1, [r3, #4] */
0xf57ff04f, /* dsb */
0xe320f003, /* wfi */
0xe5901000, /* ldr r1, [r0] */
0xe1110001, /* tst r1, r1 */
0x0afffffb, /* beq <wfi> */
0xe12fff11, /* bx r1 */
EXYNOS4210_EXT_GIC_CPU_BASE_ADDR,
0, /* gic_cpu_if: base address of Internal GIC CPU interface */
0 /* bootreg: Boot register address is held here */
};
smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr;
smpboot[ARRAY_SIZE(smpboot) - 2] = info->gic_cpu_if_addr;
for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
smpboot[n] = tswap32(smpboot[n]);
}
rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
info->smp_loader_start);
}
static uint64_t exynos4210_calc_affinity(int cpu)
{
uint64_t mp_affinity;
/* Exynos4210 has 0x9 as cluster ID */
mp_affinity = (0x9 << ARM_AFF1_SHIFT) | cpu;
return mp_affinity;
}
Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
unsigned long ram_size)
{
int i, n;
Exynos4210State *s = g_new(Exynos4210State, 1);
qemu_irq gate_irq[EXYNOS4210_NCPUS][EXYNOS4210_IRQ_GATE_NINPUTS];
unsigned long mem_size;
DeviceState *dev;
SysBusDevice *busdev;
ObjectClass *cpu_oc;
cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, "cortex-a9");
assert(cpu_oc);
for (n = 0; n < EXYNOS4210_NCPUS; n++) {
Object *cpuobj = object_new(object_class_get_name(cpu_oc));
/* By default A9 CPUs have EL3 enabled. This board does not currently
* support EL3 so the CPU EL3 property is disabled before realization.
*/
if (object_property_find(cpuobj, "has_el3", NULL)) {
object_property_set_bool(cpuobj, false, "has_el3", &error_fatal);
}
s->cpu[n] = ARM_CPU(cpuobj);
object_property_set_int(cpuobj, exynos4210_calc_affinity(n),
"mp-affinity", &error_abort);
object_property_set_int(cpuobj, EXYNOS4210_SMP_PRIVATE_BASE_ADDR,
"reset-cbar", &error_abort);
object_property_set_bool(cpuobj, true, "realized", &error_fatal);
}
/*** IRQs ***/
s->irq_table = exynos4210_init_irq(&s->irqs);
/* IRQ Gate */
for (i = 0; i < EXYNOS4210_NCPUS; i++) {
dev = qdev_create(NULL, "exynos4210.irq_gate");
qdev_prop_set_uint32(dev, "n_in", EXYNOS4210_IRQ_GATE_NINPUTS);
qdev_init_nofail(dev);
/* Get IRQ Gate input in gate_irq */
for (n = 0; n < EXYNOS4210_IRQ_GATE_NINPUTS; n++) {
gate_irq[i][n] = qdev_get_gpio_in(dev, n);
}
busdev = SYS_BUS_DEVICE(dev);
/* Connect IRQ Gate output to CPU's IRQ line */
sysbus_connect_irq(busdev, 0,
qdev_get_gpio_in(DEVICE(s->cpu[i]), ARM_CPU_IRQ));
}
/* Private memory region and Internal GIC */
dev = qdev_create(NULL, "a9mpcore_priv");
qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, EXYNOS4210_SMP_PRIVATE_BASE_ADDR);
for (n = 0; n < EXYNOS4210_NCPUS; n++) {
sysbus_connect_irq(busdev, n, gate_irq[n][0]);
}
for (n = 0; n < EXYNOS4210_INT_GIC_NIRQ; n++) {
s->irqs.int_gic_irq[n] = qdev_get_gpio_in(dev, n);
}
/* Cache controller */
sysbus_create_simple("l2x0", EXYNOS4210_L2X0_BASE_ADDR, NULL);
/* External GIC */
dev = qdev_create(NULL, "exynos4210.gic");
qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
/* Map CPU interface */
sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_GIC_CPU_BASE_ADDR);
/* Map Distributer interface */
sysbus_mmio_map(busdev, 1, EXYNOS4210_EXT_GIC_DIST_BASE_ADDR);
for (n = 0; n < EXYNOS4210_NCPUS; n++) {
sysbus_connect_irq(busdev, n, gate_irq[n][1]);
}
for (n = 0; n < EXYNOS4210_EXT_GIC_NIRQ; n++) {
s->irqs.ext_gic_irq[n] = qdev_get_gpio_in(dev, n);
}
/* Internal Interrupt Combiner */
dev = qdev_create(NULL, "exynos4210.combiner");
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
sysbus_connect_irq(busdev, n, s->irqs.int_gic_irq[n]);
}
exynos4210_combiner_get_gpioin(&s->irqs, dev, 0);
sysbus_mmio_map(busdev, 0, EXYNOS4210_INT_COMBINER_BASE_ADDR);
/* External Interrupt Combiner */
dev = qdev_create(NULL, "exynos4210.combiner");
qdev_prop_set_uint32(dev, "external", 1);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
sysbus_connect_irq(busdev, n, s->irqs.ext_gic_irq[n]);
}
exynos4210_combiner_get_gpioin(&s->irqs, dev, 1);
sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_COMBINER_BASE_ADDR);
/* Initialize board IRQs. */
exynos4210_init_board_irqs(&s->irqs);
/*** Memory ***/
/* Chip-ID and OMR */
memory_region_init_io(&s->chipid_mem, NULL, &exynos4210_chipid_and_omr_ops,
NULL, "exynos4210.chipid", sizeof(chipid_and_omr));
memory_region_add_subregion(system_mem, EXYNOS4210_CHIPID_ADDR,
&s->chipid_mem);
/* Internal ROM */
memory_region_init_ram(&s->irom_mem, NULL, "exynos4210.irom",
EXYNOS4210_IROM_SIZE, &error_fatal);
vmstate_register_ram_global(&s->irom_mem);
memory_region_set_readonly(&s->irom_mem, true);
memory_region_add_subregion(system_mem, EXYNOS4210_IROM_BASE_ADDR,
&s->irom_mem);
/* mirror of iROM */
memory_region_init_alias(&s->irom_alias_mem, NULL, "exynos4210.irom_alias",
&s->irom_mem,
0,
EXYNOS4210_IROM_SIZE);
memory_region_set_readonly(&s->irom_alias_mem, true);
memory_region_add_subregion(system_mem, EXYNOS4210_IROM_MIRROR_BASE_ADDR,
&s->irom_alias_mem);
/* Internal RAM */
memory_region_init_ram(&s->iram_mem, NULL, "exynos4210.iram",
EXYNOS4210_IRAM_SIZE, &error_fatal);
vmstate_register_ram_global(&s->iram_mem);
memory_region_add_subregion(system_mem, EXYNOS4210_IRAM_BASE_ADDR,
&s->iram_mem);
/* DRAM */
mem_size = ram_size;
if (mem_size > EXYNOS4210_DRAM_MAX_SIZE) {
memory_region_init_ram(&s->dram1_mem, NULL, "exynos4210.dram1",
mem_size - EXYNOS4210_DRAM_MAX_SIZE, &error_fatal);
vmstate_register_ram_global(&s->dram1_mem);
memory_region_add_subregion(system_mem, EXYNOS4210_DRAM1_BASE_ADDR,
&s->dram1_mem);
mem_size = EXYNOS4210_DRAM_MAX_SIZE;
}
memory_region_init_ram(&s->dram0_mem, NULL, "exynos4210.dram0", mem_size,
&error_fatal);
vmstate_register_ram_global(&s->dram0_mem);
memory_region_add_subregion(system_mem, EXYNOS4210_DRAM0_BASE_ADDR,
&s->dram0_mem);
/* PMU.
* The only reason of existence at the moment is that secondary CPU boot
* loader uses PMU INFORM5 register as a holding pen.
*/
sysbus_create_simple("exynos4210.pmu", EXYNOS4210_PMU_BASE_ADDR, NULL);
sysbus_create_simple("exynos4210.clk", EXYNOS4210_CLK_BASE_ADDR, NULL);
/* PWM */
sysbus_create_varargs("exynos4210.pwm", EXYNOS4210_PWM_BASE_ADDR,
s->irq_table[exynos4210_get_irq(22, 0)],
s->irq_table[exynos4210_get_irq(22, 1)],
s->irq_table[exynos4210_get_irq(22, 2)],
s->irq_table[exynos4210_get_irq(22, 3)],
s->irq_table[exynos4210_get_irq(22, 4)],
NULL);
/* RTC */
sysbus_create_varargs("exynos4210.rtc", EXYNOS4210_RTC_BASE_ADDR,
s->irq_table[exynos4210_get_irq(23, 0)],
s->irq_table[exynos4210_get_irq(23, 1)],
NULL);
/* Multi Core Timer */
dev = qdev_create(NULL, "exynos4210.mct");
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
for (n = 0; n < 4; n++) {
/* Connect global timer interrupts to Combiner gpio_in */
sysbus_connect_irq(busdev, n,
s->irq_table[exynos4210_get_irq(1, 4 + n)]);
}
/* Connect local timer interrupts to Combiner gpio_in */
sysbus_connect_irq(busdev, 4,
s->irq_table[exynos4210_get_irq(51, 0)]);
sysbus_connect_irq(busdev, 5,
s->irq_table[exynos4210_get_irq(35, 3)]);
sysbus_mmio_map(busdev, 0, EXYNOS4210_MCT_BASE_ADDR);
/*** I2C ***/
for (n = 0; n < EXYNOS4210_I2C_NUMBER; n++) {
uint32_t addr = EXYNOS4210_I2C_BASE_ADDR + EXYNOS4210_I2C_SHIFT * n;
qemu_irq i2c_irq;
if (n < 8) {
i2c_irq = s->irq_table[exynos4210_get_irq(EXYNOS4210_I2C_INTG, n)];
} else {
i2c_irq = s->irq_table[exynos4210_get_irq(EXYNOS4210_HDMI_INTG, 1)];
}
dev = qdev_create(NULL, "exynos4210.i2c");
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_connect_irq(busdev, 0, i2c_irq);
sysbus_mmio_map(busdev, 0, addr);
s->i2c_if[n] = (I2CBus *)qdev_get_child_bus(dev, "i2c");
}
/*** UARTs ***/
exynos4210_uart_create(EXYNOS4210_UART0_BASE_ADDR,
EXYNOS4210_UART0_FIFO_SIZE, 0, NULL,
s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 0)]);
exynos4210_uart_create(EXYNOS4210_UART1_BASE_ADDR,
EXYNOS4210_UART1_FIFO_SIZE, 1, NULL,
s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 1)]);
exynos4210_uart_create(EXYNOS4210_UART2_BASE_ADDR,
EXYNOS4210_UART2_FIFO_SIZE, 2, NULL,
s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 2)]);
exynos4210_uart_create(EXYNOS4210_UART3_BASE_ADDR,
EXYNOS4210_UART3_FIFO_SIZE, 3, NULL,
s->irq_table[exynos4210_get_irq(EXYNOS4210_UART_INT_GRP, 3)]);
/*** Display controller (FIMD) ***/
sysbus_create_varargs("exynos4210.fimd", EXYNOS4210_FIMD0_BASE_ADDR,
s->irq_table[exynos4210_get_irq(11, 0)],
s->irq_table[exynos4210_get_irq(11, 1)],
s->irq_table[exynos4210_get_irq(11, 2)],
NULL);
sysbus_create_simple(TYPE_EXYNOS4210_EHCI, EXYNOS4210_EHCI_BASE_ADDR,
s->irq_table[exynos4210_get_irq(28, 3)]);
return s;
}
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