409 lines
13 KiB
C
409 lines
13 KiB
C
/*
|
|
* QEMU fulong 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.
|
|
*/
|
|
|
|
/*
|
|
* Fulong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz)
|
|
* http://www.linux-mips.org/wiki/Fulong
|
|
*
|
|
* Loongson 2e user manual:
|
|
* http://www.loongsondeveloper.com/doc/Loongson2EUserGuide.pdf
|
|
*/
|
|
|
|
#include "hw.h"
|
|
#include "pc.h"
|
|
#include "fdc.h"
|
|
#include "net.h"
|
|
#include "boards.h"
|
|
#include "smbus.h"
|
|
#include "block.h"
|
|
#include "flash.h"
|
|
#include "mips.h"
|
|
#include "mips_cpudevs.h"
|
|
#include "pci.h"
|
|
#include "usb-uhci.h"
|
|
#include "qemu-char.h"
|
|
#include "sysemu.h"
|
|
#include "audio/audio.h"
|
|
#include "qemu-log.h"
|
|
#include "loader.h"
|
|
#include "mips-bios.h"
|
|
#include "ide.h"
|
|
#include "elf.h"
|
|
#include "vt82c686.h"
|
|
#include "mc146818rtc.h"
|
|
#include "blockdev.h"
|
|
|
|
#define DEBUG_FULONG2E_INIT
|
|
|
|
#define ENVP_ADDR 0x80002000l
|
|
#define ENVP_NB_ENTRIES 16
|
|
#define ENVP_ENTRY_SIZE 256
|
|
|
|
#define MAX_IDE_BUS 2
|
|
|
|
/*
|
|
* 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:
|
|
* http://www.loongson.cn/support/git/pmon
|
|
* Then follow the "Compile Guide" available at:
|
|
* http://dev.lemote.com/code/pmon
|
|
*
|
|
* Notes:
|
|
* 1, don't use the source at http://dev.lemote.com/http_git/pmon.git
|
|
* 2, use "Bonito2edev" to replace "dir_corresponding_to_your_target_hardware"
|
|
* in the "Compile Guide".
|
|
*/
|
|
#define FULONG_BIOSNAME "pmon_fulong2e.bin"
|
|
|
|
/* PCI SLOT in fulong 2e */
|
|
#define FULONG2E_VIA_SLOT 5
|
|
#define FULONG2E_ATI_SLOT 6
|
|
#define FULONG2E_RTL8139_SLOT 7
|
|
|
|
static ISADevice *pit;
|
|
|
|
static struct _loaderparams {
|
|
int ram_size;
|
|
const char *kernel_filename;
|
|
const char *kernel_cmdline;
|
|
const char *initrd_filename;
|
|
} loaderparams;
|
|
|
|
static void GCC_FMT_ATTR(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_ADDR + table_addr);
|
|
|
|
va_start(ap, string);
|
|
vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
static int64_t load_kernel (CPUState *env)
|
|
{
|
|
int64_t kernel_entry, kernel_low, kernel_high;
|
|
int index = 0;
|
|
long initrd_size;
|
|
ram_addr_t initrd_offset;
|
|
uint32_t *prom_buf;
|
|
long prom_size;
|
|
|
|
if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL,
|
|
(uint64_t *)&kernel_entry, (uint64_t *)&kernel_low,
|
|
(uint64_t *)&kernel_high, 0, ELF_MACHINE, 1) < 0) {
|
|
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
|
loaderparams.kernel_filename);
|
|
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 = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK;
|
|
if (initrd_offset + initrd_size > ram_size) {
|
|
fprintf(stderr,
|
|
"qemu: memory too small for initial ram disk '%s'\n",
|
|
loaderparams.initrd_filename);
|
|
exit(1);
|
|
}
|
|
initrd_size = load_image_targphys(loaderparams.initrd_filename,
|
|
initrd_offset, ram_size - initrd_offset);
|
|
}
|
|
if (initrd_size == (target_ulong) -1) {
|
|
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
|
loaderparams.initrd_filename);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Setup prom parameters. */
|
|
prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE);
|
|
prom_buf = qemu_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=%li %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=100000000");
|
|
prom_set(prom_buf, index++, "memsize=%i", loaderparams.ram_size/1024/1024);
|
|
prom_set(prom_buf, index++, "modetty0=38400n8r");
|
|
prom_set(prom_buf, index++, NULL);
|
|
|
|
rom_add_blob_fixed("prom", prom_buf, prom_size,
|
|
cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR));
|
|
|
|
return kernel_entry;
|
|
}
|
|
|
|
static void write_bootloader (CPUState *env, uint8_t *base, int64_t kernel_addr)
|
|
{
|
|
uint32_t *p;
|
|
|
|
/* Small bootloader */
|
|
p = (uint32_t *) base;
|
|
|
|
stl_raw(p++, 0x0bf00010); /* j 0x1fc00040 */
|
|
stl_raw(p++, 0x00000000); /* nop */
|
|
|
|
/* Second part of the bootloader */
|
|
p = (uint32_t *) (base + 0x040);
|
|
|
|
stl_raw(p++, 0x3c040000); /* lui a0, 0 */
|
|
stl_raw(p++, 0x34840002); /* ori a0, a0, 2 */
|
|
stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */
|
|
stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */
|
|
stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */
|
|
stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */
|
|
stl_raw(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(env->ram_size) */
|
|
stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */
|
|
stl_raw(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); /* lui ra, high(kernel_addr) */;
|
|
stl_raw(p++, 0x37ff0000 | (kernel_addr & 0xffff)); /* ori ra, ra, low(kernel_addr) */
|
|
stl_raw(p++, 0x03e00008); /* jr ra */
|
|
stl_raw(p++, 0x00000000); /* nop */
|
|
}
|
|
|
|
|
|
static void main_cpu_reset(void *opaque)
|
|
{
|
|
CPUState *env = opaque;
|
|
|
|
cpu_reset(env);
|
|
/* TODO: 2E reset stuff */
|
|
if (loaderparams.kernel_filename) {
|
|
env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL));
|
|
}
|
|
}
|
|
|
|
uint8_t eeprom_spd[0x80] = {
|
|
0x80,0x08,0x07,0x0d,0x09,0x02,0x40,0x00,0x04,0x70,
|
|
0x70,0x00,0x82,0x10,0x00,0x01,0x0e,0x04,0x0c,0x01,
|
|
0x02,0x20,0x80,0x75,0x70,0x00,0x00,0x50,0x3c,0x50,
|
|
0x2d,0x20,0xb0,0xb0,0x50,0x50,0x00,0x00,0x00,0x00,
|
|
0x00,0x41,0x48,0x3c,0x32,0x75,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x9c,0x7b,0x07,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x48,0x42,0x35,0x34,0x41,0x32,
|
|
0x35,0x36,0x38,0x4b,0x4e,0x2d,0x41,0x37,0x35,0x42,
|
|
0x20,0x30,0x20
|
|
};
|
|
|
|
/* Audio support */
|
|
static void audio_init (PCIBus *pci_bus)
|
|
{
|
|
vt82c686b_ac97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 5));
|
|
vt82c686b_mc97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 6));
|
|
}
|
|
|
|
/* Network support */
|
|
static void network_init (void)
|
|
{
|
|
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 fulong board has a RTL8139 card using PCI SLOT 7 */
|
|
default_devaddr = "07";
|
|
}
|
|
|
|
pci_nic_init_nofail(nd, "rtl8139", default_devaddr);
|
|
}
|
|
}
|
|
|
|
static void cpu_request_exit(void *opaque, int irq, int level)
|
|
{
|
|
CPUState *env = cpu_single_env;
|
|
|
|
if (env && level) {
|
|
cpu_exit(env);
|
|
}
|
|
}
|
|
|
|
static void mips_fulong2e_init(ram_addr_t ram_size, const char *boot_device,
|
|
const char *kernel_filename, const char *kernel_cmdline,
|
|
const char *initrd_filename, const char *cpu_model)
|
|
{
|
|
char *filename;
|
|
unsigned long ram_offset, bios_offset;
|
|
long bios_size;
|
|
int64_t kernel_entry;
|
|
qemu_irq *i8259;
|
|
qemu_irq *cpu_exit_irq;
|
|
int via_devfn;
|
|
PCIBus *pci_bus;
|
|
uint8_t *eeprom_buf;
|
|
i2c_bus *smbus;
|
|
int i;
|
|
DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
|
|
DeviceState *eeprom;
|
|
CPUState *env;
|
|
|
|
/* init CPUs */
|
|
if (cpu_model == NULL) {
|
|
cpu_model = "Loongson-2E";
|
|
}
|
|
env = cpu_init(cpu_model);
|
|
if (!env) {
|
|
fprintf(stderr, "Unable to find CPU definition\n");
|
|
exit(1);
|
|
}
|
|
|
|
register_savevm(NULL, "cpu", 0, 3, cpu_save, cpu_load, env);
|
|
qemu_register_reset(main_cpu_reset, env);
|
|
|
|
/* fulong 2e has 256M ram. */
|
|
ram_size = 256 * 1024 * 1024;
|
|
|
|
/* fulong 2e has a 1M flash.Winbond W39L040AP70Z */
|
|
bios_size = 1024 * 1024;
|
|
|
|
/* allocate RAM */
|
|
ram_offset = qemu_ram_alloc(NULL, "fulong2e.ram", ram_size);
|
|
bios_offset = qemu_ram_alloc(NULL, "fulong2e.bios", bios_size);
|
|
|
|
cpu_register_physical_memory(0, ram_size, ram_offset);
|
|
cpu_register_physical_memory(0x1fc00000LL,
|
|
bios_size, bios_offset | IO_MEM_ROM);
|
|
|
|
/* 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 = ram_size;
|
|
loaderparams.kernel_filename = kernel_filename;
|
|
loaderparams.kernel_cmdline = kernel_cmdline;
|
|
loaderparams.initrd_filename = initrd_filename;
|
|
kernel_entry = load_kernel (env);
|
|
write_bootloader(env, qemu_get_ram_ptr(bios_offset), kernel_entry);
|
|
} else {
|
|
if (bios_name == NULL) {
|
|
bios_name = FULONG_BIOSNAME;
|
|
}
|
|
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
|
|
if (filename) {
|
|
bios_size = load_image_targphys(filename, 0x1fc00000LL,
|
|
BIOS_SIZE);
|
|
qemu_free(filename);
|
|
} else {
|
|
bios_size = -1;
|
|
}
|
|
|
|
if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) {
|
|
fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n", bios_name);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Init internal devices */
|
|
cpu_mips_irq_init_cpu(env);
|
|
cpu_mips_clock_init(env);
|
|
|
|
/* Interrupt controller */
|
|
/* The 8259 -> IP5 */
|
|
i8259 = i8259_init(env->irq[5]);
|
|
|
|
/* North bridge, Bonito --> IP2 */
|
|
pci_bus = bonito_init((qemu_irq *)&(env->irq[2]));
|
|
|
|
/* South bridge */
|
|
if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
|
|
fprintf(stderr, "qemu: too many IDE bus\n");
|
|
exit(1);
|
|
}
|
|
|
|
for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
|
|
hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
|
|
}
|
|
|
|
via_devfn = vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 0));
|
|
if (via_devfn < 0) {
|
|
fprintf(stderr, "vt82c686b_init error \n");
|
|
exit(1);
|
|
}
|
|
|
|
isa_bus_irqs(i8259);
|
|
vt82c686b_ide_init(pci_bus, hd, PCI_DEVFN(FULONG2E_VIA_SLOT, 1));
|
|
usb_uhci_vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 2));
|
|
usb_uhci_vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 3));
|
|
|
|
smbus = vt82c686b_pm_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 4),
|
|
0xeee1, NULL);
|
|
eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
|
|
memcpy(eeprom_buf, eeprom_spd, sizeof(eeprom_spd));
|
|
/* TODO: Populate SPD eeprom data. */
|
|
eeprom = qdev_create((BusState *)smbus, "smbus-eeprom");
|
|
qdev_prop_set_uint8(eeprom, "address", 0x50);
|
|
qdev_prop_set_ptr(eeprom, "data", eeprom_buf);
|
|
qdev_init_nofail(eeprom);
|
|
|
|
/* init other devices */
|
|
pit = pit_init(0x40, 0);
|
|
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
|
|
DMA_init(0, cpu_exit_irq);
|
|
|
|
/* Super I/O */
|
|
isa_create_simple("i8042");
|
|
|
|
rtc_init(2000, NULL);
|
|
|
|
for(i = 0; i < MAX_SERIAL_PORTS; i++) {
|
|
if (serial_hds[i]) {
|
|
serial_isa_init(i, serial_hds[i]);
|
|
}
|
|
}
|
|
|
|
if (parallel_hds[0]) {
|
|
parallel_init(0, parallel_hds[0]);
|
|
}
|
|
|
|
/* Sound card */
|
|
audio_init(pci_bus);
|
|
/* Network card */
|
|
network_init();
|
|
}
|
|
|
|
QEMUMachine mips_fulong2e_machine = {
|
|
.name = "fulong2e",
|
|
.desc = "Fulong 2e mini pc",
|
|
.init = mips_fulong2e_init,
|
|
};
|
|
|
|
static void mips_fulong2e_machine_init(void)
|
|
{
|
|
qemu_register_machine(&mips_fulong2e_machine);
|
|
}
|
|
|
|
machine_init(mips_fulong2e_machine_init);
|