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xemu/hw/arm/xilinx_zynq.c
Markus Armbruster d2623129a7 qom: Drop parameter @errp of object_property_add() & friends 
The only way object_property_add() can fail is when a property with
the same name already exists.  Since our property names are all
hardcoded, failure is a programming error, and the appropriate way to
handle it is passing &error_abort.

Same for its variants, except for object_property_add_child(), which
additionally fails when the child already has a parent.  Parentage is
also under program control, so this is a programming error, too.

We have a bit over 500 callers.  Almost half of them pass
&error_abort, slightly fewer ignore errors, one test case handles
errors, and the remaining few callers pass them to their own callers.

The previous few commits demonstrated once again that ignoring
programming errors is a bad idea.

Of the few ones that pass on errors, several violate the Error API.
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL.  Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call.  ich9_pm_add_properties(), sparc32_ledma_realize(),
sparc32_dma_realize(), xilinx_axidma_realize(), xilinx_enet_realize()
are wrong that way.

When the one appropriate choice of argument is &error_abort, letting
users pick the argument is a bad idea.

Drop parameter @errp and assert the preconditions instead.

There's one exception to "duplicate property name is a programming
error": the way object_property_add() implements the magic (and
undocumented) "automatic arrayification".  Don't drop @errp there.
Instead, rename object_property_add() to object_property_try_add(),
and add the obvious wrapper object_property_add().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-15-armbru@redhat.com>
[Two semantic rebase conflicts resolved]
2020-05-15 07:07:58 +02:00

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/*
* Xilinx Zynq Baseboard System emulation.
*
* Copyright (c) 2010 Xilinx.
* Copyright (c) 2012 Peter A.G. Crosthwaite (peter.croshtwaite@petalogix.com)
* Copyright (c) 2012 Petalogix Pty Ltd.
* Written by Haibing Ma
*
* 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.
*
* 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/units.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "hw/arm/boot.h"
#include "net/net.h"
#include "exec/address-spaces.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "hw/block/flash.h"
#include "hw/loader.h"
#include "hw/misc/zynq-xadc.h"
#include "hw/ssi/ssi.h"
#include "hw/usb/chipidea.h"
#include "qemu/error-report.h"
#include "hw/sd/sdhci.h"
#include "hw/char/cadence_uart.h"
#include "hw/net/cadence_gem.h"
#include "hw/cpu/a9mpcore.h"
#include "hw/qdev-clock.h"
#include "sysemu/reset.h"
#define TYPE_ZYNQ_MACHINE MACHINE_TYPE_NAME("xilinx-zynq-a9")
#define ZYNQ_MACHINE(obj) \
OBJECT_CHECK(ZynqMachineState, (obj), TYPE_ZYNQ_MACHINE)
/* board base frequency: 33.333333 MHz */
#define PS_CLK_FREQUENCY (100 * 1000 * 1000 / 3)
#define NUM_SPI_FLASHES 4
#define NUM_QSPI_FLASHES 2
#define NUM_QSPI_BUSSES 2
#define FLASH_SIZE (64 * 1024 * 1024)
#define FLASH_SECTOR_SIZE (128 * 1024)
#define IRQ_OFFSET 32 /* pic interrupts start from index 32 */
#define MPCORE_PERIPHBASE 0xF8F00000
#define ZYNQ_BOARD_MIDR 0x413FC090
static const int dma_irqs[8] = {
46, 47, 48, 49, 72, 73, 74, 75
};
#define BOARD_SETUP_ADDR 0x100
#define SLCR_LOCK_OFFSET 0x004
#define SLCR_UNLOCK_OFFSET 0x008
#define SLCR_ARM_PLL_OFFSET 0x100
#define SLCR_XILINX_UNLOCK_KEY 0xdf0d
#define SLCR_XILINX_LOCK_KEY 0x767b
#define ZYNQ_SDHCI_CAPABILITIES 0x69ec0080 /* Datasheet: UG585 (v1.12.1) */
#define ARMV7_IMM16(x) (extract32((x), 0, 12) | \
extract32((x), 12, 4) << 16)
/* Write immediate val to address r0 + addr. r0 should contain base offset
* of the SLCR block. Clobbers r1.
*/
#define SLCR_WRITE(addr, val) \
0xe3001000 + ARMV7_IMM16(extract32((val), 0, 16)), /* movw r1 ... */ \
0xe3401000 + ARMV7_IMM16(extract32((val), 16, 16)), /* movt r1 ... */ \
0xe5801000 + (addr)
typedef struct ZynqMachineState {
MachineState parent;
Clock *ps_clk;
} ZynqMachineState;
static void zynq_write_board_setup(ARMCPU *cpu,
const struct arm_boot_info *info)
{
int n;
uint32_t board_setup_blob[] = {
0xe3a004f8, /* mov r0, #0xf8000000 */
SLCR_WRITE(SLCR_UNLOCK_OFFSET, SLCR_XILINX_UNLOCK_KEY),
SLCR_WRITE(SLCR_ARM_PLL_OFFSET, 0x00014008),
SLCR_WRITE(SLCR_LOCK_OFFSET, SLCR_XILINX_LOCK_KEY),
0xe12fff1e, /* bx lr */
};
for (n = 0; n < ARRAY_SIZE(board_setup_blob); n++) {
board_setup_blob[n] = tswap32(board_setup_blob[n]);
}
rom_add_blob_fixed("board-setup", board_setup_blob,
sizeof(board_setup_blob), BOARD_SETUP_ADDR);
}
static struct arm_boot_info zynq_binfo = {};
static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq)
{
DeviceState *dev;
SysBusDevice *s;
dev = qdev_create(NULL, TYPE_CADENCE_GEM);
if (nd->used) {
qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
qdev_set_nic_properties(dev, nd);
}
qdev_init_nofail(dev);
s = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(s, 0, base);
sysbus_connect_irq(s, 0, irq);
}
static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
bool is_qspi)
{
DeviceState *dev;
SysBusDevice *busdev;
SSIBus *spi;
DeviceState *flash_dev;
int i, j;
int num_busses = is_qspi ? NUM_QSPI_BUSSES : 1;
int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES;
dev = qdev_create(NULL, is_qspi ? "xlnx.ps7-qspi" : "xlnx.ps7-spi");
qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1);
qdev_prop_set_uint8(dev, "num-ss-bits", num_ss);
qdev_prop_set_uint8(dev, "num-busses", num_busses);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, base_addr);
if (is_qspi) {
sysbus_mmio_map(busdev, 1, 0xFC000000);
}
sysbus_connect_irq(busdev, 0, irq);
for (i = 0; i < num_busses; ++i) {
char bus_name[16];
qemu_irq cs_line;
snprintf(bus_name, 16, "spi%d", i);
spi = (SSIBus *)qdev_get_child_bus(dev, bus_name);
for (j = 0; j < num_ss; ++j) {
DriveInfo *dinfo = drive_get_next(IF_MTD);
flash_dev = ssi_create_slave_no_init(spi, "n25q128");
if (dinfo) {
qdev_prop_set_drive(flash_dev, "drive",
blk_by_legacy_dinfo(dinfo), &error_fatal);
}
qdev_init_nofail(flash_dev);
cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line);
}
}
}
static void zynq_init(MachineState *machine)
{
ZynqMachineState *zynq_machine = ZYNQ_MACHINE(machine);
ARMCPU *cpu;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ocm_ram = g_new(MemoryRegion, 1);
DeviceState *dev, *slcr;
SysBusDevice *busdev;
qemu_irq pic[64];
int n;
/* max 2GB ram */
if (machine->ram_size > 2 * GiB) {
error_report("RAM size more than 2 GiB is not supported");
exit(EXIT_FAILURE);
}
cpu = ARM_CPU(object_new(machine->cpu_type));
/* 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(OBJECT(cpu), "has_el3", NULL)) {
object_property_set_bool(OBJECT(cpu), false, "has_el3", &error_fatal);
}
object_property_set_int(OBJECT(cpu), ZYNQ_BOARD_MIDR, "midr",
&error_fatal);
object_property_set_int(OBJECT(cpu), MPCORE_PERIPHBASE, "reset-cbar",
&error_fatal);
object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
/* DDR remapped to address zero. */
memory_region_add_subregion(address_space_mem, 0, machine->ram);
/* 256K of on-chip memory */
memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 * KiB,
&error_fatal);
memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram);
DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
/* AMD */
pflash_cfi02_register(0xe2000000, "zynq.pflash", FLASH_SIZE,
dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
FLASH_SECTOR_SIZE, 1,
1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa,
0);
/* Create slcr, keep a pointer to connect clocks */
slcr = qdev_create(NULL, "xilinx,zynq_slcr");
qdev_init_nofail(slcr);
sysbus_mmio_map(SYS_BUS_DEVICE(slcr), 0, 0xF8000000);
/* Create the main clock source, and feed slcr with it */
zynq_machine->ps_clk = CLOCK(object_new(TYPE_CLOCK));
object_property_add_child(OBJECT(zynq_machine), "ps_clk",
OBJECT(zynq_machine->ps_clk));
object_unref(OBJECT(zynq_machine->ps_clk));
clock_set_hz(zynq_machine->ps_clk, PS_CLK_FREQUENCY);
qdev_connect_clock_in(slcr, "ps_clk", zynq_machine->ps_clk);
dev = qdev_create(NULL, TYPE_A9MPCORE_PRIV);
qdev_prop_set_uint32(dev, "num-cpu", 1);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
sysbus_connect_irq(busdev, 0,
qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ));
for (n = 0; n < 64; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET], false);
zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false);
zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true);
sysbus_create_simple(TYPE_CHIPIDEA, 0xE0002000, pic[53 - IRQ_OFFSET]);
sysbus_create_simple(TYPE_CHIPIDEA, 0xE0003000, pic[76 - IRQ_OFFSET]);
dev = cadence_uart_create(0xE0000000, pic[59 - IRQ_OFFSET], serial_hd(0));
qdev_connect_clock_in(dev, "refclk",
qdev_get_clock_out(slcr, "uart0_ref_clk"));
dev = cadence_uart_create(0xE0001000, pic[82 - IRQ_OFFSET], serial_hd(1));
qdev_connect_clock_in(dev, "refclk",
qdev_get_clock_out(slcr, "uart1_ref_clk"));
sysbus_create_varargs("cadence_ttc", 0xF8001000,
pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL);
sysbus_create_varargs("cadence_ttc", 0xF8002000,
pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL);
gem_init(&nd_table[0], 0xE000B000, pic[54-IRQ_OFFSET]);
gem_init(&nd_table[1], 0xE000C000, pic[77-IRQ_OFFSET]);
for (n = 0; n < 2; n++) {
int hci_irq = n ? 79 : 56;
hwaddr hci_addr = n ? 0xE0101000 : 0xE0100000;
DriveInfo *di;
BlockBackend *blk;
DeviceState *carddev;
/* Compatible with:
* - SD Host Controller Specification Version 2.0 Part A2
* - SDIO Specification Version 2.0
* - MMC Specification Version 3.31
*/
dev = qdev_create(NULL, TYPE_SYSBUS_SDHCI);
qdev_prop_set_uint8(dev, "sd-spec-version", 2);
qdev_prop_set_uint64(dev, "capareg", ZYNQ_SDHCI_CAPABILITIES);
qdev_init_nofail(dev);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, hci_addr);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[hci_irq - IRQ_OFFSET]);
di = drive_get_next(IF_SD);
blk = di ? blk_by_legacy_dinfo(di) : NULL;
carddev = qdev_create(qdev_get_child_bus(dev, "sd-bus"), TYPE_SD_CARD);
qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
object_property_set_bool(OBJECT(carddev), true, "realized",
&error_fatal);
}
dev = qdev_create(NULL, TYPE_ZYNQ_XADC);
qdev_init_nofail(dev);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8007100);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[39-IRQ_OFFSET]);
dev = qdev_create(NULL, "pl330");
qdev_prop_set_uint8(dev, "num_chnls", 8);
qdev_prop_set_uint8(dev, "num_periph_req", 4);
qdev_prop_set_uint8(dev, "num_events", 16);
qdev_prop_set_uint8(dev, "data_width", 64);
qdev_prop_set_uint8(dev, "wr_cap", 8);
qdev_prop_set_uint8(dev, "wr_q_dep", 16);
qdev_prop_set_uint8(dev, "rd_cap", 8);
qdev_prop_set_uint8(dev, "rd_q_dep", 16);
qdev_prop_set_uint16(dev, "data_buffer_dep", 256);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, 0xF8003000);
sysbus_connect_irq(busdev, 0, pic[45-IRQ_OFFSET]); /* abort irq line */
for (n = 0; n < ARRAY_SIZE(dma_irqs); ++n) { /* event irqs */
sysbus_connect_irq(busdev, n + 1, pic[dma_irqs[n] - IRQ_OFFSET]);
}
dev = qdev_create(NULL, "xlnx.ps7-dev-cfg");
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]);
sysbus_mmio_map(busdev, 0, 0xF8007000);
zynq_binfo.ram_size = machine->ram_size;
zynq_binfo.nb_cpus = 1;
zynq_binfo.board_id = 0xd32;
zynq_binfo.loader_start = 0;
zynq_binfo.board_setup_addr = BOARD_SETUP_ADDR;
zynq_binfo.write_board_setup = zynq_write_board_setup;
arm_load_kernel(ARM_CPU(first_cpu), machine, &zynq_binfo);
}
static void zynq_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9";
mc->init = zynq_init;
mc->max_cpus = 1;
mc->no_sdcard = 1;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a9");
mc->default_ram_id = "zynq.ext_ram";
}
static const TypeInfo zynq_machine_type = {
.name = TYPE_ZYNQ_MACHINE,
.parent = TYPE_MACHINE,
.class_init = zynq_machine_class_init,
.instance_size = sizeof(ZynqMachineState),
};
static void zynq_machine_register_types(void)
{
type_register_static(&zynq_machine_type);
}
type_init(zynq_machine_register_types)
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