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qemu-e2k/hw/arm/realview.c
Markus Armbruster 64eaa82095 hw: Replace trivial drive_get_next() by drive_get() 
drive_get_next() is basically a bad idea.  It returns the "next" block
backend of a certain interface type.  "Next" means bus=0,unit=N, where
subsequent calls count N up from zero, per interface type.

This lets you define unit numbers implicitly by execution order.  If the
order changes, or new calls appear "in the middle", unit numbers change.
ABI break.  Hard to spot in review.

A number of machines connect just one backend with drive_get_next().
Change them to use drive_get() directly.  This makes the (zero) unit
number explicit in the code.

Cc: Beniamino Galvani <b.galvani@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Subbaraya Sundeep <sundeep.lkml@gmail.com>
Cc: Niek Linnenbank <nieklinnenbank@gmail.com>
Cc: Andrew Baumann <Andrew.Baumann@microsoft.com>
Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: Jean-Christophe Dubois <jcd@tribudubois.net>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: qemu-arm@nongnu.org
Cc: qemu-riscv@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211117163409.3587705-3-armbru@redhat.com>
2021-12-15 08:38:16 +01:00

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/*
* ARM RealView Baseboard System emulation.
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "hw/arm/boot.h"
#include "hw/arm/primecell.h"
#include "hw/net/lan9118.h"
#include "hw/net/smc91c111.h"
#include "hw/pci/pci.h"
#include "net/net.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "hw/i2c/i2c.h"
#include "qemu/error-report.h"
#include "hw/char/pl011.h"
#include "hw/cpu/a9mpcore.h"
#include "hw/intc/realview_gic.h"
#include "hw/irq.h"
#include "hw/i2c/arm_sbcon_i2c.h"
#include "hw/sd/sd.h"
#define SMP_BOOT_ADDR 0xe0000000
#define SMP_BOOTREG_ADDR 0x10000030
/* Board init. */
static struct arm_boot_info realview_binfo = {
.smp_loader_start = SMP_BOOT_ADDR,
.smp_bootreg_addr = SMP_BOOTREG_ADDR,
};
/* The following two lists must be consistent. */
enum realview_board_type {
BOARD_EB,
BOARD_EB_MPCORE,
BOARD_PB_A8,
BOARD_PBX_A9,
};
static const int realview_board_id[] = {
0x33b,
0x33b,
0x769,
0x76d
};
static void realview_init(MachineState *machine,
enum realview_board_type board_type)
{
ARMCPU *cpu = NULL;
CPUARMState *env;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram_lo;
MemoryRegion *ram_hi = g_new(MemoryRegion, 1);
MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
MemoryRegion *ram_hack = g_new(MemoryRegion, 1);
DeviceState *dev, *sysctl, *gpio2, *pl041;
SysBusDevice *busdev;
qemu_irq pic[64];
qemu_irq mmc_irq[2];
PCIBus *pci_bus = NULL;
NICInfo *nd;
DriveInfo *dinfo;
I2CBus *i2c;
int n;
unsigned int smp_cpus = machine->smp.cpus;
int done_nic = 0;
qemu_irq cpu_irq[4];
int is_mpcore = 0;
int is_pb = 0;
uint32_t proc_id = 0;
uint32_t sys_id;
ram_addr_t low_ram_size;
ram_addr_t ram_size = machine->ram_size;
hwaddr periphbase = 0;
switch (board_type) {
case BOARD_EB:
break;
case BOARD_EB_MPCORE:
is_mpcore = 1;
periphbase = 0x10100000;
break;
case BOARD_PB_A8:
is_pb = 1;
break;
case BOARD_PBX_A9:
is_mpcore = 1;
is_pb = 1;
periphbase = 0x1f000000;
break;
}
for (n = 0; n < smp_cpus; n++) {
Object *cpuobj = object_new(machine->cpu_type);
/* By default A9,A15 and ARM1176 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")) {
object_property_set_bool(cpuobj, "has_el3", false, &error_fatal);
}
if (is_pb && is_mpcore) {
object_property_set_int(cpuobj, "reset-cbar", periphbase,
&error_fatal);
}
qdev_realize(DEVICE(cpuobj), NULL, &error_fatal);
cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpuobj), ARM_CPU_IRQ);
}
cpu = ARM_CPU(first_cpu);
env = &cpu->env;
if (arm_feature(env, ARM_FEATURE_V7)) {
if (is_mpcore) {
proc_id = 0x0c000000;
} else {
proc_id = 0x0e000000;
}
} else if (arm_feature(env, ARM_FEATURE_V6K)) {
proc_id = 0x06000000;
} else if (arm_feature(env, ARM_FEATURE_V6)) {
proc_id = 0x04000000;
} else {
proc_id = 0x02000000;
}
if (is_pb && ram_size > 0x20000000) {
/* Core tile RAM. */
ram_lo = g_new(MemoryRegion, 1);
low_ram_size = ram_size - 0x20000000;
ram_size = 0x20000000;
memory_region_init_ram(ram_lo, NULL, "realview.lowmem", low_ram_size,
&error_fatal);
memory_region_add_subregion(sysmem, 0x20000000, ram_lo);
}
memory_region_init_ram(ram_hi, NULL, "realview.highmem", ram_size,
&error_fatal);
low_ram_size = ram_size;
if (low_ram_size > 0x10000000)
low_ram_size = 0x10000000;
/* SDRAM at address zero. */
memory_region_init_alias(ram_alias, NULL, "realview.alias",
ram_hi, 0, low_ram_size);
memory_region_add_subregion(sysmem, 0, ram_alias);
if (is_pb) {
/* And again at a high address. */
memory_region_add_subregion(sysmem, 0x70000000, ram_hi);
} else {
ram_size = low_ram_size;
}
sys_id = is_pb ? 0x01780500 : 0xc1400400;
sysctl = qdev_new("realview_sysctl");
qdev_prop_set_uint32(sysctl, "sys_id", sys_id);
qdev_prop_set_uint32(sysctl, "proc_id", proc_id);
sysbus_realize_and_unref(SYS_BUS_DEVICE(sysctl), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(sysctl), 0, 0x10000000);
if (is_mpcore) {
dev = qdev_new(is_pb ? TYPE_A9MPCORE_PRIV : "realview_mpcore");
qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, periphbase);
for (n = 0; n < smp_cpus; n++) {
sysbus_connect_irq(busdev, n, cpu_irq[n]);
}
sysbus_create_varargs("l2x0", periphbase + 0x2000, NULL);
/* Both A9 and 11MPCore put the GIC CPU i/f at base + 0x100 */
realview_binfo.gic_cpu_if_addr = periphbase + 0x100;
} else {
uint32_t gic_addr = is_pb ? 0x1e000000 : 0x10040000;
/* For now just create the nIRQ GIC, and ignore the others. */
dev = sysbus_create_simple(TYPE_REALVIEW_GIC, gic_addr, cpu_irq[0]);
}
for (n = 0; n < 64; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
pl041 = qdev_new("pl041");
qdev_prop_set_uint32(pl041, "nc_fifo_depth", 512);
sysbus_realize_and_unref(SYS_BUS_DEVICE(pl041), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(pl041), 0, 0x10004000);
sysbus_connect_irq(SYS_BUS_DEVICE(pl041), 0, pic[19]);
sysbus_create_simple("pl050_keyboard", 0x10006000, pic[20]);
sysbus_create_simple("pl050_mouse", 0x10007000, pic[21]);
pl011_create(0x10009000, pic[12], serial_hd(0));
pl011_create(0x1000a000, pic[13], serial_hd(1));
pl011_create(0x1000b000, pic[14], serial_hd(2));
pl011_create(0x1000c000, pic[15], serial_hd(3));
/* DMA controller is optional, apparently. */
dev = qdev_new("pl081");
object_property_set_link(OBJECT(dev), "downstream", OBJECT(sysmem),
&error_fatal);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0x10030000);
sysbus_connect_irq(busdev, 0, pic[24]);
sysbus_create_simple("sp804", 0x10011000, pic[4]);
sysbus_create_simple("sp804", 0x10012000, pic[5]);
sysbus_create_simple("pl061", 0x10013000, pic[6]);
sysbus_create_simple("pl061", 0x10014000, pic[7]);
gpio2 = sysbus_create_simple("pl061", 0x10015000, pic[8]);
sysbus_create_simple("pl111", 0x10020000, pic[23]);
dev = sysbus_create_varargs("pl181", 0x10005000, pic[17], pic[18], NULL);
/* Wire up MMC card detect and read-only signals. These have
* to go to both the PL061 GPIO and the sysctl register.
* Note that the PL181 orders these lines (readonly,inserted)
* and the PL061 has them the other way about. Also the card
* detect line is inverted.
*/
mmc_irq[0] = qemu_irq_split(
qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_WPROT),
qdev_get_gpio_in(gpio2, 1));
mmc_irq[1] = qemu_irq_split(
qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_CARDIN),
qemu_irq_invert(qdev_get_gpio_in(gpio2, 0)));
qdev_connect_gpio_out_named(dev, "card-read-only", 0, mmc_irq[0]);
qdev_connect_gpio_out_named(dev, "card-inserted", 0, mmc_irq[1]);
dinfo = drive_get(IF_SD, 0, 0);
if (dinfo) {
DeviceState *card;
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, qdev_get_child_bus(dev, "sd-bus"),
&error_fatal);
}
sysbus_create_simple("pl031", 0x10017000, pic[10]);
if (!is_pb) {
dev = qdev_new("realview_pci");
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0x10019000); /* PCI controller registers */
sysbus_mmio_map(busdev, 1, 0x60000000); /* PCI self-config */
sysbus_mmio_map(busdev, 2, 0x61000000); /* PCI config */
sysbus_mmio_map(busdev, 3, 0x62000000); /* PCI I/O */
sysbus_mmio_map(busdev, 4, 0x63000000); /* PCI memory window 1 */
sysbus_mmio_map(busdev, 5, 0x64000000); /* PCI memory window 2 */
sysbus_mmio_map(busdev, 6, 0x68000000); /* PCI memory window 3 */
sysbus_connect_irq(busdev, 0, pic[48]);
sysbus_connect_irq(busdev, 1, pic[49]);
sysbus_connect_irq(busdev, 2, pic[50]);
sysbus_connect_irq(busdev, 3, pic[51]);
pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
if (machine_usb(machine)) {
pci_create_simple(pci_bus, -1, "pci-ohci");
}
n = drive_get_max_bus(IF_SCSI);
while (n >= 0) {
dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a"));
lsi53c8xx_handle_legacy_cmdline(dev);
n--;
}
}
for(n = 0; n < nb_nics; n++) {
nd = &nd_table[n];
if (!done_nic && (!nd->model ||
strcmp(nd->model, is_pb ? "lan9118" : "smc91c111") == 0)) {
if (is_pb) {
lan9118_init(nd, 0x4e000000, pic[28]);
} else {
smc91c111_init(nd, 0x4e000000, pic[28]);
}
done_nic = 1;
} else {
if (pci_bus) {
pci_nic_init_nofail(nd, pci_bus, "rtl8139", NULL);
}
}
}
dev = sysbus_create_simple(TYPE_VERSATILE_I2C, 0x10002000, NULL);
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
i2c_slave_create_simple(i2c, "ds1338", 0x68);
/* Memory map for RealView Emulation Baseboard: */
/* 0x10000000 System registers. */
/* 0x10001000 System controller. */
/* 0x10002000 Two-Wire Serial Bus. */
/* 0x10003000 Reserved. */
/* 0x10004000 AACI. */
/* 0x10005000 MCI. */
/* 0x10006000 KMI0. */
/* 0x10007000 KMI1. */
/* 0x10008000 Character LCD. (EB) */
/* 0x10009000 UART0. */
/* 0x1000a000 UART1. */
/* 0x1000b000 UART2. */
/* 0x1000c000 UART3. */
/* 0x1000d000 SSPI. */
/* 0x1000e000 SCI. */
/* 0x1000f000 Reserved. */
/* 0x10010000 Watchdog. */
/* 0x10011000 Timer 0+1. */
/* 0x10012000 Timer 2+3. */
/* 0x10013000 GPIO 0. */
/* 0x10014000 GPIO 1. */
/* 0x10015000 GPIO 2. */
/* 0x10002000 Two-Wire Serial Bus - DVI. (PB) */
/* 0x10017000 RTC. */
/* 0x10018000 DMC. */
/* 0x10019000 PCI controller config. */
/* 0x10020000 CLCD. */
/* 0x10030000 DMA Controller. */
/* 0x10040000 GIC1. (EB) */
/* 0x10050000 GIC2. (EB) */
/* 0x10060000 GIC3. (EB) */
/* 0x10070000 GIC4. (EB) */
/* 0x10080000 SMC. */
/* 0x1e000000 GIC1. (PB) */
/* 0x1e001000 GIC2. (PB) */
/* 0x1e002000 GIC3. (PB) */
/* 0x1e003000 GIC4. (PB) */
/* 0x40000000 NOR flash. */
/* 0x44000000 DoC flash. */
/* 0x48000000 SRAM. */
/* 0x4c000000 Configuration flash. */
/* 0x4e000000 Ethernet. */
/* 0x4f000000 USB. */
/* 0x50000000 PISMO. */
/* 0x54000000 PISMO. */
/* 0x58000000 PISMO. */
/* 0x5c000000 PISMO. */
/* 0x60000000 PCI. */
/* 0x60000000 PCI Self Config. */
/* 0x61000000 PCI Config. */
/* 0x62000000 PCI IO. */
/* 0x63000000 PCI mem 0. */
/* 0x64000000 PCI mem 1. */
/* 0x68000000 PCI mem 2. */
/* ??? Hack to map an additional page of ram for the secondary CPU
startup code. I guess this works on real hardware because the
BootROM happens to be in ROM/flash or in memory that isn't clobbered
until after Linux boots the secondary CPUs. */
memory_region_init_ram(ram_hack, NULL, "realview.hack", 0x1000,
&error_fatal);
memory_region_add_subregion(sysmem, SMP_BOOT_ADDR, ram_hack);
realview_binfo.ram_size = ram_size;
realview_binfo.nb_cpus = smp_cpus;
realview_binfo.board_id = realview_board_id[board_type];
realview_binfo.loader_start = (board_type == BOARD_PB_A8 ? 0x70000000 : 0);
arm_load_kernel(ARM_CPU(first_cpu), machine, &realview_binfo);
}
static void realview_eb_init(MachineState *machine)
{
realview_init(machine, BOARD_EB);
}
static void realview_eb_mpcore_init(MachineState *machine)
{
realview_init(machine, BOARD_EB_MPCORE);
}
static void realview_pb_a8_init(MachineState *machine)
{
realview_init(machine, BOARD_PB_A8);
}
static void realview_pbx_a9_init(MachineState *machine)
{
realview_init(machine, BOARD_PBX_A9);
}
static void realview_eb_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ARM RealView Emulation Baseboard (ARM926EJ-S)";
mc->init = realview_eb_init;
mc->block_default_type = IF_SCSI;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
}
static const TypeInfo realview_eb_type = {
.name = MACHINE_TYPE_NAME("realview-eb"),
.parent = TYPE_MACHINE,
.class_init = realview_eb_class_init,
};
static void realview_eb_mpcore_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ARM RealView Emulation Baseboard (ARM11MPCore)";
mc->init = realview_eb_mpcore_init;
mc->block_default_type = IF_SCSI;
mc->max_cpus = 4;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm11mpcore");
}
static const TypeInfo realview_eb_mpcore_type = {
.name = MACHINE_TYPE_NAME("realview-eb-mpcore"),
.parent = TYPE_MACHINE,
.class_init = realview_eb_mpcore_class_init,
};
static void realview_pb_a8_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ARM RealView Platform Baseboard for Cortex-A8";
mc->init = realview_pb_a8_init;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8");
}
static const TypeInfo realview_pb_a8_type = {
.name = MACHINE_TYPE_NAME("realview-pb-a8"),
.parent = TYPE_MACHINE,
.class_init = realview_pb_a8_class_init,
};
static void realview_pbx_a9_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ARM RealView Platform Baseboard Explore for Cortex-A9";
mc->init = realview_pbx_a9_init;
mc->max_cpus = 4;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a9");
}
static const TypeInfo realview_pbx_a9_type = {
.name = MACHINE_TYPE_NAME("realview-pbx-a9"),
.parent = TYPE_MACHINE,
.class_init = realview_pbx_a9_class_init,
};
static void realview_machine_init(void)
{
type_register_static(&realview_eb_type);
type_register_static(&realview_eb_mpcore_type);
type_register_static(&realview_pb_a8_type);
type_register_static(&realview_pbx_a9_type);
}
type_init(realview_machine_init)
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