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qemu/hw/mips/mips_fulong2e.c
James Hogan 05b3274b6b hw/mips: align initrd to 64KB to avoid kernel error 
The Linux kernel can be configured to use 64KB pages, but it also
requires initrd to be page aligned. Therefore, to be safe, align the
initrd to 64KB using a new INITRD_PAGE_MASK rather than
TARGET_PAGE_MASK.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-07-29 00:27:35 +02:00

411 lines
13 KiB
C
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/*
* 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.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
/*
* 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/hw.h"
#include "hw/i386/pc.h"
#include "hw/char/serial.h"
#include "hw/block/fdc.h"
#include "net/net.h"
#include "hw/boards.h"
#include "hw/i2c/smbus.h"
#include "block/block.h"
#include "hw/block/flash.h"
#include "hw/mips/mips.h"
#include "hw/mips/cpudevs.h"
#include "hw/pci/pci.h"
#include "sysemu/char.h"
#include "sysemu/sysemu.h"
#include "audio/audio.h"
#include "qemu/log.h"
#include "hw/loader.h"
#include "hw/mips/bios.h"
#include "hw/ide.h"
#include "elf.h"
#include "hw/isa/vt82c686.h"
#include "hw/timer/mc146818rtc.h"
#include "hw/timer/i8254.h"
#include "sysemu/blockdev.h"
#include "exec/address-spaces.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 (CPUMIPSState *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 + ~INITRD_PAGE_MASK) & INITRD_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 = 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=%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 (CPUMIPSState *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)
{
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));
}
}
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 (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 fulong board has a RTL8139 card using PCI SLOT 7 */
default_devaddr = "07";
}
pci_nic_init_nofail(nd, pci_bus, "rtl8139", default_devaddr);
}
}
static void cpu_request_exit(void *opaque, int irq, int level)
{
CPUState *cpu = current_cpu;
if (cpu && level) {
cpu_exit(cpu);
}
}
static void mips_fulong2e_init(QEMUMachineInitArgs *args)
{
ram_addr_t ram_size = args->ram_size;
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
const char *kernel_cmdline = args->kernel_cmdline;
const char *initrd_filename = args->initrd_filename;
char *filename;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
MemoryRegion *bios = g_new(MemoryRegion, 1);
long bios_size;
int64_t kernel_entry;
qemu_irq *i8259;
qemu_irq *cpu_exit_irq;
PCIBus *pci_bus;
ISABus *isa_bus;
i2c_bus *smbus;
int i;
DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
MIPSCPU *cpu;
CPUMIPSState *env;
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "Loongson-2E";
}
cpu = cpu_mips_init(cpu_model);
if (cpu == NULL) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
env = &cpu->env;
qemu_register_reset(main_cpu_reset, cpu);
/* fulong 2e has 256M ram. */
ram_size = 256 * 1024 * 1024;
/* fulong 2e has a 1M flash.Winbond W39L040AP70Z */
bios_size = 1024 * 1024;
/* allocate RAM */
memory_region_init_ram(ram, NULL, "fulong2e.ram", ram_size);
vmstate_register_ram_global(ram);
memory_region_init_ram(bios, NULL, "fulong2e.bios", bios_size);
vmstate_register_ram_global(bios);
memory_region_set_readonly(bios, true);
memory_region_add_subregion(address_space_mem, 0, ram);
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 = 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, memory_region_get_ram_ptr(bios), 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);
g_free(filename);
} else {
bios_size = -1;
}
if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) {
fprintf(stderr, "qemu: Warning, could not load MIPS bios '%s'\n", bios_name);
}
}
/* Init internal devices */
cpu_mips_irq_init_cpu(env);
cpu_mips_clock_init(env);
/* North bridge, Bonito --> IP2 */
pci_bus = bonito_init((qemu_irq *)&(env->irq[2]));
/* South bridge */
ide_drive_get(hd, MAX_IDE_BUS);
isa_bus = vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 0));
if (!isa_bus) {
fprintf(stderr, "vt82c686b_init error\n");
exit(1);
}
/* Interrupt controller */
/* The 8259 -> IP5 */
i8259 = i8259_init(isa_bus, env->irq[5]);
isa_bus_irqs(isa_bus, i8259);
vt82c686b_ide_init(pci_bus, hd, PCI_DEVFN(FULONG2E_VIA_SLOT, 1));
pci_create_simple(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 2),
"vt82c686b-usb-uhci");
pci_create_simple(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 3),
"vt82c686b-usb-uhci");
smbus = vt82c686b_pm_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 4),
0xeee1, NULL);
/* TODO: Populate SPD eeprom data. */
smbus_eeprom_init(smbus, 1, eeprom_spd, sizeof(eeprom_spd));
/* init other devices */
pit = pit_init(isa_bus, 0x40, 0, NULL);
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
DMA_init(0, cpu_exit_irq);
/* Super I/O */
isa_create_simple(isa_bus, "i8042");
rtc_init(isa_bus, 2000, NULL);
for(i = 0; i < MAX_SERIAL_PORTS; i++) {
if (serial_hds[i]) {
serial_isa_init(isa_bus, i, serial_hds[i]);
}
}
if (parallel_hds[0]) {
parallel_init(isa_bus, 0, parallel_hds[0]);
}
/* Sound card */
audio_init(pci_bus);
/* Network card */
network_init(pci_bus);
}
static QEMUMachine mips_fulong2e_machine = {
.name = "fulong2e",
.desc = "Fulong 2e mini pc",
.init = mips_fulong2e_init,
DEFAULT_MACHINE_OPTIONS,
};
static void mips_fulong2e_machine_init(void)
{
qemu_register_machine(&mips_fulong2e_machine);
}
machine_init(mips_fulong2e_machine_init);
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