mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
45dd668f23
qemu/hw/arm/highbank.c
Peter Maydell 45dd668f23 hw/arm/highbank: Drop unused secondary boot stub code 
The highbank and midway board code includes boot-stub code for
handling secondary CPU boot which keeps the secondaries in a pen
until the primary writes to a known location with the address they
should jump to.

This code is never used, because the boards enable QEMU's PSCI
emulation, so secondary CPUs are kept powered off until the PSCI call
which turns them on, and then start execution from the address given
by the guest in that PSCI call.  Delete the unreachable code.

(The code was wrong for midway in any case -- on the Cortex-A15 the
GIC CPU interface registers are at a different offset from PERIPHBASE
compared to the Cortex-A9, and the code baked-in the offsets for
highbank's A9.)

Note that this commit implicitly depends on the preceding "Don't
write secondary boot stub if using PSCI" commit -- the default
secondary-boot stub code overlaps with one of the highbank-specific
bootcode rom blobs, so we must suppress the secondary-boot
stub code entirely, not merely replace the highbank-specific
version with the default.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Tested-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20220127154639.2090164-15-peter.maydell@linaro.org
2022-02-08 10:56:28 +00:00

390 lines
12 KiB
C
Raw Blame History

/*
* Calxeda Highbank SoC emulation
*
* Copyright (c) 2010-2012 Calxeda
*
* 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/datadir.h"
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "migration/vmstate.h"
#include "hw/arm/boot.h"
#include "hw/loader.h"
#include "net/net.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "qemu/error-report.h"
#include "hw/char/pl011.h"
#include "hw/ide/ahci.h"
#include "hw/cpu/a9mpcore.h"
#include "hw/cpu/a15mpcore.h"
#include "qemu/log.h"
#include "qom/object.h"
#include "cpu.h"
#define SMP_BOOT_ADDR 0x100
#define SMP_BOOT_REG 0x40
#define MPCORE_PERIPHBASE 0xfff10000
#define MVBAR_ADDR 0x200
#define BOARD_SETUP_ADDR (MVBAR_ADDR + 8 * sizeof(uint32_t))
#define NIRQ_GIC 160
/* Board init. */
#define NUM_REGS 0x200
static void hb_regs_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
uint32_t *regs = opaque;
if (offset == 0xf00) {
if (value == 1 || value == 2) {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
} else if (value == 3) {
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
}
}
if (offset / 4 >= NUM_REGS) {
qemu_log_mask(LOG_GUEST_ERROR,
"highbank: bad write offset 0x%" HWADDR_PRIx "\n", offset);
return;
}
regs[offset / 4] = value;
}
static uint64_t hb_regs_read(void *opaque, hwaddr offset,
unsigned size)
{
uint32_t value;
uint32_t *regs = opaque;
if (offset / 4 >= NUM_REGS) {
qemu_log_mask(LOG_GUEST_ERROR,
"highbank: bad read offset 0x%" HWADDR_PRIx "\n", offset);
return 0;
}
value = regs[offset / 4];
if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) {
value |= 0x30000000;
}
return value;
}
static const MemoryRegionOps hb_mem_ops = {
.read = hb_regs_read,
.write = hb_regs_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
#define TYPE_HIGHBANK_REGISTERS "highbank-regs"
OBJECT_DECLARE_SIMPLE_TYPE(HighbankRegsState, HIGHBANK_REGISTERS)
struct HighbankRegsState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
uint32_t regs[NUM_REGS];
};
static const VMStateDescription vmstate_highbank_regs = {
.name = "highbank-regs",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS),
VMSTATE_END_OF_LIST(),
},
};
static void highbank_regs_reset(DeviceState *dev)
{
HighbankRegsState *s = HIGHBANK_REGISTERS(dev);
s->regs[0x40] = 0x05F20121;
s->regs[0x41] = 0x2;
s->regs[0x42] = 0x05F30121;
s->regs[0x43] = 0x05F40121;
}
static void highbank_regs_init(Object *obj)
{
HighbankRegsState *s = HIGHBANK_REGISTERS(obj);
SysBusDevice *dev = SYS_BUS_DEVICE(obj);
memory_region_init_io(&s->iomem, obj, &hb_mem_ops, s->regs,
"highbank_regs", 0x1000);
sysbus_init_mmio(dev, &s->iomem);
}
static void highbank_regs_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->desc = "Calxeda Highbank registers";
dc->vmsd = &vmstate_highbank_regs;
dc->reset = highbank_regs_reset;
}
static const TypeInfo highbank_regs_info = {
.name = TYPE_HIGHBANK_REGISTERS,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(HighbankRegsState),
.instance_init = highbank_regs_init,
.class_init = highbank_regs_class_init,
};
static void highbank_regs_register_types(void)
{
type_register_static(&highbank_regs_info);
}
type_init(highbank_regs_register_types)
static struct arm_boot_info highbank_binfo;
enum cxmachines {
CALXEDA_HIGHBANK,
CALXEDA_MIDWAY,
};
/* ram_size must be set to match the upper bound of memory in the
* device tree (linux/arch/arm/boot/dts/highbank.dts), which is
* normally 0xff900000 or -m 4089. When running this board on a
* 32-bit host, set the reg value of memory to 0xf7ff00000 in the
* device tree and pass -m 2047 to QEMU.
*/
static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
{
DeviceState *dev = NULL;
SysBusDevice *busdev;
qemu_irq pic[128];
int n;
unsigned int smp_cpus = machine->smp.cpus;
qemu_irq cpu_irq[4];
qemu_irq cpu_fiq[4];
qemu_irq cpu_virq[4];
qemu_irq cpu_vfiq[4];
MemoryRegion *sysram;
MemoryRegion *sysmem;
char *sysboot_filename;
switch (machine_id) {
case CALXEDA_HIGHBANK:
machine->cpu_type = ARM_CPU_TYPE_NAME("cortex-a9");
break;
case CALXEDA_MIDWAY:
machine->cpu_type = ARM_CPU_TYPE_NAME("cortex-a15");
break;
default:
assert(0);
}
for (n = 0; n < smp_cpus; n++) {
Object *cpuobj;
ARMCPU *cpu;
cpuobj = object_new(machine->cpu_type);
cpu = ARM_CPU(cpuobj);
object_property_set_int(cpuobj, "psci-conduit", QEMU_PSCI_CONDUIT_SMC,
&error_abort);
if (object_property_find(cpuobj, "reset-cbar")) {
object_property_set_int(cpuobj, "reset-cbar", MPCORE_PERIPHBASE,
&error_abort);
}
qdev_realize(DEVICE(cpuobj), NULL, &error_fatal);
cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ);
cpu_fiq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_FIQ);
cpu_virq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_VIRQ);
cpu_vfiq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_VFIQ);
}
sysmem = get_system_memory();
/* SDRAM at address zero. */
memory_region_add_subregion(sysmem, 0, machine->ram);
sysram = g_new(MemoryRegion, 1);
memory_region_init_ram(sysram, NULL, "highbank.sysram", 0x8000,
&error_fatal);
memory_region_add_subregion(sysmem, 0xfff88000, sysram);
if (machine->firmware != NULL) {
sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, machine->firmware);
if (sysboot_filename != NULL) {
if (load_image_targphys(sysboot_filename, 0xfff88000, 0x8000) < 0) {
error_report("Unable to load %s", machine->firmware);
exit(1);
}
g_free(sysboot_filename);
} else {
error_report("Unable to find %s", machine->firmware);
exit(1);
}
}
switch (machine_id) {
case CALXEDA_HIGHBANK:
dev = qdev_new("l2x0");
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0xfff12000);
dev = qdev_new(TYPE_A9MPCORE_PRIV);
break;
case CALXEDA_MIDWAY:
dev = qdev_new(TYPE_A15MPCORE_PRIV);
break;
}
qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
for (n = 0; n < smp_cpus; n++) {
sysbus_connect_irq(busdev, n, cpu_irq[n]);
sysbus_connect_irq(busdev, n + smp_cpus, cpu_fiq[n]);
sysbus_connect_irq(busdev, n + 2 * smp_cpus, cpu_virq[n]);
sysbus_connect_irq(busdev, n + 3 * smp_cpus, cpu_vfiq[n]);
}
for (n = 0; n < 128; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
dev = qdev_new("sp804");
qdev_prop_set_uint32(dev, "freq0", 150000000);
qdev_prop_set_uint32(dev, "freq1", 150000000);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0xfff34000);
sysbus_connect_irq(busdev, 0, pic[18]);
pl011_create(0xfff36000, pic[20], serial_hd(0));
dev = qdev_new(TYPE_HIGHBANK_REGISTERS);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0xfff3c000);
sysbus_create_simple("pl061", 0xfff30000, pic[14]);
sysbus_create_simple("pl061", 0xfff31000, pic[15]);
sysbus_create_simple("pl061", 0xfff32000, pic[16]);
sysbus_create_simple("pl061", 0xfff33000, pic[17]);
sysbus_create_simple("pl031", 0xfff35000, pic[19]);
sysbus_create_simple("pl022", 0xfff39000, pic[23]);
sysbus_create_simple(TYPE_SYSBUS_AHCI, 0xffe08000, pic[83]);
if (nd_table[0].used) {
qemu_check_nic_model(&nd_table[0], "xgmac");
dev = qdev_new("xgmac");
qdev_set_nic_properties(dev, &nd_table[0]);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xfff50000);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[77]);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, pic[78]);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[79]);
qemu_check_nic_model(&nd_table[1], "xgmac");
dev = qdev_new("xgmac");
qdev_set_nic_properties(dev, &nd_table[1]);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xfff51000);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[80]);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, pic[81]);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[82]);
}
/* TODO create and connect IDE devices for ide_drive_get() */
highbank_binfo.ram_size = machine->ram_size;
/* highbank requires a dtb in order to boot, and the dtb will override
* the board ID. The following value is ignored, so set it to -1 to be
* clear that the value is meaningless.
*/
highbank_binfo.board_id = -1;
highbank_binfo.nb_cpus = smp_cpus;
highbank_binfo.loader_start = 0;
highbank_binfo.board_setup_addr = BOARD_SETUP_ADDR;
highbank_binfo.psci_conduit = QEMU_PSCI_CONDUIT_SMC;
arm_load_kernel(ARM_CPU(first_cpu), machine, &highbank_binfo);
}
static void highbank_init(MachineState *machine)
{
calxeda_init(machine, CALXEDA_HIGHBANK);
}
static void midway_init(MachineState *machine)
{
calxeda_init(machine, CALXEDA_MIDWAY);
}
static void highbank_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "Calxeda Highbank (ECX-1000)";
mc->init = highbank_init;
mc->block_default_type = IF_IDE;
mc->units_per_default_bus = 1;
mc->max_cpus = 4;
mc->ignore_memory_transaction_failures = true;
mc->default_ram_id = "highbank.dram";
}
static const TypeInfo highbank_type = {
.name = MACHINE_TYPE_NAME("highbank"),
.parent = TYPE_MACHINE,
.class_init = highbank_class_init,
};
static void midway_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "Calxeda Midway (ECX-2000)";
mc->init = midway_init;
mc->block_default_type = IF_IDE;
mc->units_per_default_bus = 1;
mc->max_cpus = 4;
mc->ignore_memory_transaction_failures = true;
mc->default_ram_id = "highbank.dram";
}
static const TypeInfo midway_type = {
.name = MACHINE_TYPE_NAME("midway"),
.parent = TYPE_MACHINE,
.class_init = midway_class_init,
};
static void calxeda_machines_init(void)
{
type_register_static(&highbank_type);
type_register_static(&midway_type);
}
type_init(calxeda_machines_init)
Reference in New Issue View Git Blame Copy Permalink