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Diffstat (limited to 'hw/mips/mips_fulong2e.c')
-rw-r--r--hw/mips/mips_fulong2e.c411
1 files changed, 411 insertions, 0 deletions
diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
new file mode 100644
index 0000000000..766aa9dfb5
--- /dev/null
+++ b/hw/mips/mips_fulong2e.c
@@ -0,0 +1,411 @@
+/*
+ * 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/pc.h"
+#include "hw/serial.h"
+#include "hw/fdc.h"
+#include "net/net.h"
+#include "hw/boards.h"
+#include "hw/smbus.h"
+#include "block/block.h"
+#include "hw/flash.h"
+#include "hw/mips.h"
+#include "hw/mips_cpudevs.h"
+#include "hw/pci/pci.h"
+#include "char/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/vt82c686.h"
+#include "hw/mc146818rtc.h"
+#include "hw/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 + ~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 = 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 (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)
+{
+ CPUMIPSState *env = cpu_single_env;
+
+ if (env && level) {
+ cpu_exit(env);
+ }
+}
+
+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, "fulong2e.ram", ram_size);
+ vmstate_register_ram_global(ram);
+ memory_region_init_ram(bios, "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: 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);
+
+ /* 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();
+}
+
+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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