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qemu-e2k/hw/mips/fuloong2e.c
Bernhard Beschow e052944a96 hw/pci/pci: Remove multifunction parameter from pci_create_simple_multifunction() 
There is also pci_create_simple() which creates non-multifunction PCI
devices. Accordingly the parameter is always set to true when a multi
function PCI device is to be created.

The reason for the parameter's existence seems to be that it is used in the
internal PCI code as well which is the only location where it gets set to
false. This one usage can be replaced by trivial code.

Remove this redundant, error-prone parameter.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20230304114043.121024-5-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-07-10 16:29:17 -04:00

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/*
* QEMU fuloong 2e mini pc support
*
* Copyright (c) 2008 yajin (yajin@vm-kernel.org)
* Copyright (c) 2009 chenming (chenming@rdc.faw.com.cn)
* Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com)
* This code is licensed under the GNU GPL v2.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
/*
* Fuloong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz)
* https://www.linux-mips.org/wiki/Fuloong_2E
*
* Loongson 2e manuals:
* https://github.com/loongson-community/docs/tree/master/2E
*/
#include "qemu/osdep.h"
#include "qemu/datadir.h"
#include "qemu/units.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/clock.h"
#include "net/net.h"
#include "hw/boards.h"
#include "hw/i2c/smbus_eeprom.h"
#include "hw/block/flash.h"
#include "hw/mips/mips.h"
#include "hw/mips/bootloader.h"
#include "hw/mips/cpudevs.h"
#include "hw/pci/pci.h"
#include "hw/loader.h"
#include "hw/ide/pci.h"
#include "hw/qdev-properties.h"
#include "elf.h"
#include "hw/isa/vt82c686.h"
#include "sysemu/qtest.h"
#include "sysemu/reset.h"
#include "sysemu/sysemu.h"
#include "qemu/error-report.h"
#define ENVP_PADDR 0x2000
#define ENVP_VADDR cpu_mips_phys_to_kseg0(NULL, ENVP_PADDR)
#define ENVP_NB_ENTRIES 16
#define ENVP_ENTRY_SIZE 256
/* Fuloong 2e has a 512k flash: Winbond W39L040AP70Z */
#define BIOS_SIZE (512 * KiB)
/*
* PMON is not part of qemu and released with BSD license, anyone
* who want to build a pmon binary please first git-clone the source
* from the git repository at:
* https://github.com/loongson-community/pmon
*/
#define FULOONG_BIOSNAME "pmon_2e.bin"
/* PCI SLOT in Fuloong 2e */
#define FULOONG2E_VIA_SLOT 5
#define FULOONG2E_ATI_SLOT 6
#define FULOONG2E_RTL8139_SLOT 7
static struct _loaderparams {
int ram_size;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
} loaderparams;
static void G_GNUC_PRINTF(3, 4) prom_set(uint32_t *prom_buf, int index,
const char *string, ...)
{
va_list ap;
int32_t table_addr;
if (index >= ENVP_NB_ENTRIES) {
return;
}
if (string == NULL) {
prom_buf[index] = 0;
return;
}
table_addr = sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE;
prom_buf[index] = tswap32(ENVP_VADDR + table_addr);
va_start(ap, string);
vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap);
va_end(ap);
}
static uint64_t load_kernel(MIPSCPU *cpu)
{
uint64_t kernel_entry, kernel_high, initrd_size;
int index = 0;
long kernel_size;
ram_addr_t initrd_offset;
uint32_t *prom_buf;
long prom_size;
kernel_size = load_elf(loaderparams.kernel_filename, NULL,
cpu_mips_kseg0_to_phys, NULL,
&kernel_entry, NULL,
&kernel_high, NULL,
0, EM_MIPS, 1, 0);
if (kernel_size < 0) {
error_report("could not load kernel '%s': %s",
loaderparams.kernel_filename,
load_elf_strerror(kernel_size));
exit(1);
}
/* load initrd */
initrd_size = 0;
initrd_offset = 0;
if (loaderparams.initrd_filename) {
initrd_size = get_image_size(loaderparams.initrd_filename);
if (initrd_size > 0) {
initrd_offset = ROUND_UP(kernel_high, INITRD_PAGE_SIZE);
if (initrd_offset + initrd_size > loaderparams.ram_size) {
error_report("memory too small for initial ram disk '%s'",
loaderparams.initrd_filename);
exit(1);
}
initrd_size = load_image_targphys(loaderparams.initrd_filename,
initrd_offset,
loaderparams.ram_size - initrd_offset);
}
if (initrd_size == (target_ulong) -1) {
error_report("could not load initial ram disk '%s'",
loaderparams.initrd_filename);
exit(1);
}
}
/* Setup prom parameters. */
prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE);
prom_buf = g_malloc(prom_size);
prom_set(prom_buf, index++, "%s", loaderparams.kernel_filename);
if (initrd_size > 0) {
prom_set(prom_buf, index++,
"rd_start=0x%" PRIx64 " rd_size=%" PRId64 " %s",
cpu_mips_phys_to_kseg0(NULL, initrd_offset),
initrd_size, loaderparams.kernel_cmdline);
} else {
prom_set(prom_buf, index++, "%s", loaderparams.kernel_cmdline);
}
/* Setup minimum environment variables */
prom_set(prom_buf, index++, "busclock=33000000");
prom_set(prom_buf, index++, "cpuclock=%u", clock_get_hz(cpu->clock));
prom_set(prom_buf, index++, "memsize=%"PRIi64, loaderparams.ram_size / MiB);
prom_set(prom_buf, index++, NULL);
rom_add_blob_fixed("prom", prom_buf, prom_size, ENVP_PADDR);
g_free(prom_buf);
return kernel_entry;
}
static void write_bootloader(CPUMIPSState *env, uint8_t *base,
uint64_t kernel_addr)
{
uint32_t *p;
/* Small bootloader */
p = (uint32_t *)base;
/* j 0x1fc00040 */
stl_p(p++, 0x0bf00010);
/* nop */
stl_p(p++, 0x00000000);
/* Second part of the bootloader */
p = (uint32_t *)(base + 0x040);
bl_gen_jump_kernel((void **)&p,
true, ENVP_VADDR - 64,
true, 2, true, ENVP_VADDR,
true, ENVP_VADDR + 8,
true, loaderparams.ram_size,
kernel_addr);
}
static void main_cpu_reset(void *opaque)
{
MIPSCPU *cpu = opaque;
CPUMIPSState *env = &cpu->env;
cpu_reset(CPU(cpu));
/* TODO: 2E reset stuff */
if (loaderparams.kernel_filename) {
env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL));
}
}
/* Network support */
static void network_init(PCIBus *pci_bus)
{
int i;
for (i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
const char *default_devaddr = NULL;
if (i == 0 && (!nd->model || strcmp(nd->model, "rtl8139") == 0)) {
/* The Fuloong board has a RTL8139 card using PCI SLOT 7 */
default_devaddr = "07";
}
pci_nic_init_nofail(nd, pci_bus, "rtl8139", default_devaddr);
}
}
static void mips_fuloong2e_init(MachineState *machine)
{
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
char *filename;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *bios = g_new(MemoryRegion, 1);
long bios_size;
uint8_t *spd_data;
uint64_t kernel_entry;
PCIDevice *pci_dev;
PCIBus *pci_bus;
I2CBus *smbus;
Clock *cpuclk;
MIPSCPU *cpu;
CPUMIPSState *env;
DeviceState *dev;
cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
clock_set_hz(cpuclk, 533080000); /* ~533 MHz */
/* init CPUs */
cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
env = &cpu->env;
qemu_register_reset(main_cpu_reset, cpu);
/* TODO: support more than 256M RAM as highmem */
if (machine->ram_size != 256 * MiB) {
error_report("Invalid RAM size, should be 256MB");
exit(EXIT_FAILURE);
}
memory_region_add_subregion(address_space_mem, 0, machine->ram);
/* Boot ROM */
memory_region_init_rom(bios, NULL, "fuloong2e.bios", BIOS_SIZE,
&error_fatal);
memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios);
/*
* We do not support flash operation, just loading pmon.bin as raw BIOS.
* Please use -L to set the BIOS path and -bios to set bios name.
*/
if (kernel_filename) {
loaderparams.ram_size = machine->ram_size;
loaderparams.kernel_filename = kernel_filename;
loaderparams.kernel_cmdline = kernel_cmdline;
loaderparams.initrd_filename = initrd_filename;
kernel_entry = load_kernel(cpu);
write_bootloader(env, memory_region_get_ram_ptr(bios), kernel_entry);
} else {
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS,
machine->firmware ?: FULOONG_BIOSNAME);
if (filename) {
bios_size = load_image_targphys(filename, 0x1fc00000LL,
BIOS_SIZE);
g_free(filename);
} else {
bios_size = -1;
}
if ((bios_size < 0 || bios_size > BIOS_SIZE) &&
machine->firmware && !qtest_enabled()) {
error_report("Could not load MIPS bios '%s'", machine->firmware);
exit(1);
}
}
/* Init internal devices */
cpu_mips_irq_init_cpu(cpu);
cpu_mips_clock_init(cpu);
/* North bridge, Bonito --> IP2 */
pci_bus = bonito_init((qemu_irq *)&(env->irq[2]));
/* South bridge -> IP5 */
pci_dev = pci_create_simple_multifunction(pci_bus,
PCI_DEVFN(FULOONG2E_VIA_SLOT, 0),
TYPE_VT82C686B_ISA);
object_property_add_alias(OBJECT(machine), "rtc-time",
object_resolve_path_component(OBJECT(pci_dev),
"rtc"),
"date");
qdev_connect_gpio_out(DEVICE(pci_dev), 0, env->irq[5]);
dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "ide"));
pci_ide_create_devs(PCI_DEVICE(dev));
dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "pm"));
smbus = I2C_BUS(qdev_get_child_bus(dev, "i2c"));
/* GPU */
if (vga_interface_type != VGA_NONE) {
vga_interface_created = true;
pci_dev = pci_new(-1, "ati-vga");
dev = DEVICE(pci_dev);
qdev_prop_set_uint32(dev, "vgamem_mb", 16);
qdev_prop_set_uint16(dev, "x-device-id", 0x5159);
pci_realize_and_unref(pci_dev, pci_bus, &error_fatal);
}
/* Populate SPD eeprom data */
spd_data = spd_data_generate(DDR, machine->ram_size);
smbus_eeprom_init_one(smbus, 0x50, spd_data);
/* Network card: RTL8139D */
network_init(pci_bus);
}
static void mips_fuloong2e_machine_init(MachineClass *mc)
{
mc->desc = "Fuloong 2e mini pc";
mc->init = mips_fuloong2e_init;
mc->block_default_type = IF_IDE;
mc->default_cpu_type = MIPS_CPU_TYPE_NAME("Loongson-2E");
mc->default_ram_size = 256 * MiB;
mc->default_ram_id = "fuloong2e.ram";
mc->minimum_page_bits = 14;
}
DEFINE_MACHINE("fuloong2e", mips_fuloong2e_machine_init)
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