--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/mips_malta.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,954 @@
+/*
+ * QEMU Malta board support
+ *
+ * Copyright (c) 2006 Aurelien Jarno
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#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 "pci.h"
+#include "qemu-char.h"
+#include "sysemu.h"
+#include "audio/audio.h"
+#include "boards.h"
+#include "qemu-log.h"
+
+//#define DEBUG_BOARD_INIT
+
+#ifdef TARGET_WORDS_BIGENDIAN
+#define BIOS_FILENAME "mips_bios.bin"
+#else
+#define BIOS_FILENAME "mipsel_bios.bin"
+#endif
+
+#ifdef TARGET_MIPS64
+#define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffULL)
+#else
+#define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffU)
+#endif
+
+#define ENVP_ADDR (int32_t)0x80002000
+#define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000))
+
+#define ENVP_NB_ENTRIES 16
+#define ENVP_ENTRY_SIZE 256
+
+#define MAX_IDE_BUS 2
+
+typedef struct {
+ uint32_t leds;
+ uint32_t brk;
+ uint32_t gpout;
+ uint32_t i2cin;
+ uint32_t i2coe;
+ uint32_t i2cout;
+ uint32_t i2csel;
+ CharDriverState *display;
+ char display_text[9];
+ SerialState *uart;
+} MaltaFPGAState;
+
+static PITState *pit;
+
+static struct _loaderparams {
+ int ram_size;
+ const char *kernel_filename;
+ const char *kernel_cmdline;
+ const char *initrd_filename;
+} loaderparams;
+
+/* Malta FPGA */
+static void malta_fpga_update_display(void *opaque)
+{
+ char leds_text[9];
+ int i;
+ MaltaFPGAState *s = opaque;
+
+ for (i = 7 ; i >= 0 ; i--) {
+ if (s->leds & (1 << i))
+ leds_text[i] = '#';
+ else
+ leds_text[i] = ' ';
+ }
+ leds_text[8] = '\0';
+
+ qemu_chr_printf(s->display, "\e[H\n\n|\e[32m%-8.8s\e[00m|\r\n", leds_text);
+ qemu_chr_printf(s->display, "\n\n\n\n|\e[31m%-8.8s\e[00m|", s->display_text);
+}
+
+/*
+ * EEPROM 24C01 / 24C02 emulation.
+ *
+ * Emulation for serial EEPROMs:
+ * 24C01 - 1024 bit (128 x 8)
+ * 24C02 - 2048 bit (256 x 8)
+ *
+ * Typical device names include Microchip 24C02SC or SGS Thomson ST24C02.
+ */
+
+//~ #define DEBUG
+
+#if defined(DEBUG)
+# define logout(fmt, args...) fprintf(stderr, "MALTA\t%-24s" fmt, __func__, ##args)
+#else
+# define logout(fmt, args...) ((void)0)
+#endif
+
+struct _eeprom24c0x_t {
+ uint8_t tick;
+ uint8_t address;
+ uint8_t command;
+ uint8_t ack;
+ uint8_t scl;
+ uint8_t sda;
+ uint8_t data;
+ //~ uint16_t size;
+ uint8_t contents[256];
+};
+
+typedef struct _eeprom24c0x_t eeprom24c0x_t;
+
+static eeprom24c0x_t eeprom = {
+ contents: {
+ /* 00000000: */ 0x80,0x08,0x04,0x0D,0x0A,0x01,0x40,0x00,
+ /* 00000008: */ 0x01,0x75,0x54,0x00,0x82,0x08,0x00,0x01,
+ /* 00000010: */ 0x8F,0x04,0x02,0x01,0x01,0x00,0x0E,0x00,
+ /* 00000018: */ 0x00,0x00,0x00,0x14,0x0F,0x14,0x2D,0x40,
+ /* 00000020: */ 0x15,0x08,0x15,0x08,0x00,0x00,0x00,0x00,
+ /* 00000028: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000030: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000038: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x12,0xD0,
+ /* 00000040: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000048: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000050: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000058: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000060: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000068: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000070: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ /* 00000078: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x64,0xF4,
+ },
+};
+
+static uint8_t eeprom24c0x_read(void)
+{
+ logout("%u: scl = %u, sda = %u, data = 0x%02x\n",
+ eeprom.tick, eeprom.scl, eeprom.sda, eeprom.data);
+ return eeprom.sda;
+}
+
+static void eeprom24c0x_write(int scl, int sda)
+{
+ if (eeprom.scl && scl && (eeprom.sda != sda)) {
+ logout("%u: scl = %u->%u, sda = %u->%u i2c %s\n",
+ eeprom.tick, eeprom.scl, scl, eeprom.sda, sda, sda ? "stop" : "start");
+ if (!sda) {
+ eeprom.tick = 1;
+ eeprom.command = 0;
+ }
+ } else if (eeprom.tick == 0 && !eeprom.ack) {
+ /* Waiting for start. */
+ logout("%u: scl = %u->%u, sda = %u->%u wait for i2c start\n",
+ eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
+ } else if (!eeprom.scl && scl) {
+ logout("%u: scl = %u->%u, sda = %u->%u trigger bit\n",
+ eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
+ if (eeprom.ack) {
+ logout("\ti2c ack bit = 0\n");
+ sda = 0;
+ eeprom.ack = 0;
+ } else if (eeprom.sda == sda) {
+ uint8_t bit = (sda != 0);
+ logout("\ti2c bit = %d\n", bit);
+ if (eeprom.tick < 9) {
+ eeprom.command <<= 1;
+ eeprom.command += bit;
+ eeprom.tick++;
+ if (eeprom.tick == 9) {
+ logout("\tcommand 0x%04x, %s\n", eeprom.command, bit ? "read" : "write");
+ eeprom.ack = 1;
+ }
+ } else if (eeprom.tick < 17) {
+ if (eeprom.command & 1) {
+ sda = ((eeprom.data & 0x80) != 0);
+ }
+ eeprom.address <<= 1;
+ eeprom.address += bit;
+ eeprom.tick++;
+ eeprom.data <<= 1;
+ if (eeprom.tick == 17) {
+ eeprom.data = eeprom.contents[eeprom.address];
+ logout("\taddress 0x%04x, data 0x%02x\n", eeprom.address, eeprom.data);
+ eeprom.ack = 1;
+ eeprom.tick = 0;
+ }
+ } else if (eeprom.tick >= 17) {
+ sda = 0;
+ }
+ } else {
+ logout("\tsda changed with raising scl\n");
+ }
+ } else {
+ logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
+ }
+ eeprom.scl = scl;
+ eeprom.sda = sda;
+}
+
+static uint32_t malta_fpga_readl(void *opaque, target_phys_addr_t addr)
+{
+ MaltaFPGAState *s = opaque;
+ uint32_t val = 0;
+ uint32_t saddr;
+
+ saddr = (addr & 0xfffff);
+
+ switch (saddr) {
+
+ /* SWITCH Register */
+ case 0x00200:
+ val = 0x00000000; /* All switches closed */
+ break;
+
+ /* STATUS Register */
+ case 0x00208:
+#ifdef TARGET_WORDS_BIGENDIAN
+ val = 0x00000012;
+#else
+ val = 0x00000010;
+#endif
+ break;
+
+ /* JMPRS Register */
+ case 0x00210:
+ val = 0x00;
+ break;
+
+ /* LEDBAR Register */
+ case 0x00408:
+ val = s->leds;
+ break;
+
+ /* BRKRES Register */
+ case 0x00508:
+ val = s->brk;
+ break;
+
+ /* UART Registers are handled directly by the serial device */
+
+ /* GPOUT Register */
+ case 0x00a00:
+ val = s->gpout;
+ break;
+
+ /* XXX: implement a real I2C controller */
+
+ /* GPINP Register */
+ case 0x00a08:
+ /* IN = OUT until a real I2C control is implemented */
+ if (s->i2csel)
+ val = s->i2cout;
+ else
+ val = 0x00;
+ break;
+
+ /* I2CINP Register */
+ case 0x00b00:
+ val = ((s->i2cin & ~1) | eeprom24c0x_read());
+ break;
+
+ /* I2COE Register */
+ case 0x00b08:
+ val = s->i2coe;
+ break;
+
+ /* I2COUT Register */
+ case 0x00b10:
+ val = s->i2cout;
+ break;
+
+ /* I2CSEL Register */
+ case 0x00b18:
+ val = s->i2csel;
+ break;
+
+ default:
+#if 0
+ printf ("malta_fpga_read: Bad register offset 0x" TARGET_FMT_lx "\n",
+ addr);
+#endif
+ break;
+ }
+ return val;
+}
+
+static void malta_fpga_writel(void *opaque, target_phys_addr_t addr,
+ uint32_t val)
+{
+ MaltaFPGAState *s = opaque;
+ uint32_t saddr;
+
+ saddr = (addr & 0xfffff);
+
+ switch (saddr) {
+
+ /* SWITCH Register */
+ case 0x00200:
+ break;
+
+ /* JMPRS Register */
+ case 0x00210:
+ break;
+
+ /* LEDBAR Register */
+ /* XXX: implement a 8-LED array */
+ case 0x00408:
+ s->leds = val & 0xff;
+ break;
+
+ /* ASCIIWORD Register */
+ case 0x00410:
+ snprintf(s->display_text, 9, "%08X", val);
+ malta_fpga_update_display(s);
+ break;
+
+ /* ASCIIPOS0 to ASCIIPOS7 Registers */
+ case 0x00418:
+ case 0x00420:
+ case 0x00428:
+ case 0x00430:
+ case 0x00438:
+ case 0x00440:
+ case 0x00448:
+ case 0x00450:
+ s->display_text[(saddr - 0x00418) >> 3] = (char) val;
+ malta_fpga_update_display(s);
+ break;
+
+ /* SOFTRES Register */
+ case 0x00500:
+ if (val == 0x42)
+ qemu_system_reset_request ();
+ break;
+
+ /* BRKRES Register */
+ case 0x00508:
+ s->brk = val & 0xff;
+ break;
+
+ /* UART Registers are handled directly by the serial device */
+
+ /* GPOUT Register */
+ case 0x00a00:
+ s->gpout = val & 0xff;
+ break;
+
+ /* I2COE Register */
+ case 0x00b08:
+ s->i2coe = val & 0x03;
+ break;
+
+ /* I2COUT Register */
+ case 0x00b10:
+ eeprom24c0x_write(val & 0x02, val & 0x01);
+ s->i2cout = val;
+ break;
+
+ /* I2CSEL Register */
+ case 0x00b18:
+ s->i2csel = val & 0x01;
+ break;
+
+ default:
+#if 0
+ printf ("malta_fpga_write: Bad register offset 0x" TARGET_FMT_lx "\n",
+ addr);
+#endif
+ break;
+ }
+}
+
+static CPUReadMemoryFunc *malta_fpga_read[] = {
+ malta_fpga_readl,
+ malta_fpga_readl,
+ malta_fpga_readl
+};
+
+static CPUWriteMemoryFunc *malta_fpga_write[] = {
+ malta_fpga_writel,
+ malta_fpga_writel,
+ malta_fpga_writel
+};
+
+static void malta_fpga_reset(void *opaque)
+{
+ MaltaFPGAState *s = opaque;
+
+ s->leds = 0x00;
+ s->brk = 0x0a;
+ s->gpout = 0x00;
+ s->i2cin = 0x3;
+ s->i2coe = 0x0;
+ s->i2cout = 0x3;
+ s->i2csel = 0x1;
+
+ s->display_text[8] = '\0';
+ snprintf(s->display_text, 9, " ");
+ malta_fpga_update_display(s);
+}
+
+static MaltaFPGAState *malta_fpga_init(target_phys_addr_t base, CPUState *env)
+{
+ MaltaFPGAState *s;
+ CharDriverState *uart_chr;
+ int malta;
+
+ s = (MaltaFPGAState *)qemu_mallocz(sizeof(MaltaFPGAState));
+
+ malta = cpu_register_io_memory(0, malta_fpga_read,
+ malta_fpga_write, s);
+
+ cpu_register_physical_memory(base, 0x900, malta);
+ /* 0xa00 is less than a page, so will still get the right offsets. */
+ cpu_register_physical_memory(base + 0xa00, 0x100000 - 0xa00, malta);
+
+ s->display = qemu_chr_open("fpga", "vc:320x200");
+ qemu_chr_printf(s->display, "\e[HMalta LEDBAR\r\n");
+ qemu_chr_printf(s->display, "+--------+\r\n");
+ qemu_chr_printf(s->display, "+ +\r\n");
+ qemu_chr_printf(s->display, "+--------+\r\n");
+ qemu_chr_printf(s->display, "\n");
+ qemu_chr_printf(s->display, "Malta ASCII\r\n");
+ qemu_chr_printf(s->display, "+--------+\r\n");
+ qemu_chr_printf(s->display, "+ +\r\n");
+ qemu_chr_printf(s->display, "+--------+\r\n");
+
+ uart_chr = qemu_chr_open("cbus", "vc:80Cx24C");
+ qemu_chr_printf(uart_chr, "CBUS UART\r\n");
+ s->uart =
+ serial_mm_init(base + 0x900, 3, env->irq[2], 230400, uart_chr, 1);
+
+ malta_fpga_reset(s);
+ qemu_register_reset(malta_fpga_reset, s);
+
+ return s;
+}
+
+/* Audio support */
+#ifdef HAS_AUDIO
+static void audio_init (PCIBus *pci_bus)
+{
+ struct soundhw *c;
+ int audio_enabled = 0;
+
+ for (c = soundhw; !audio_enabled && c->name; ++c) {
+ audio_enabled = c->enabled;
+ }
+
+ if (audio_enabled) {
+ AudioState *s;
+
+ s = AUD_init ();
+ if (s) {
+ for (c = soundhw; c->name; ++c) {
+ if (c->enabled)
+ c->init.init_pci (pci_bus, s);
+ }
+ }
+ }
+}
+#endif
+
+/* Network support */
+static void network_init (PCIBus *pci_bus)
+{
+ int i;
+ NICInfo *nd;
+
+ for(i = 0; i < nb_nics; i++) {
+ nd = &nd_table[i];
+ if (!nd->model) {
+ nd->model = "pcnet";
+ }
+ if (i == 0 && strcmp(nd->model, "pcnet") == 0) {
+ /* The malta board has a PCNet card using PCI SLOT 11 */
+ pci_nic_init(pci_bus, nd, 88);
+ } else {
+ pci_nic_init(pci_bus, nd, -1);
+ }
+ }
+}
+
+/* ROM and pseudo bootloader
+
+ The following code implements a very very simple bootloader. It first
+ loads the registers a0 to a3 to the values expected by the OS, and
+ then jump at the kernel address.
+
+ The bootloader should pass the locations of the kernel arguments and
+ environment variables tables. Those tables contain the 32-bit address
+ of NULL terminated strings. The environment variables table should be
+ terminated by a NULL address.
+
+ For a simpler implementation, the number of kernel arguments is fixed
+ to two (the name of the kernel and the command line), and the two
+ tables are actually the same one.
+
+ The registers a0 to a3 should contain the following values:
+ a0 - number of kernel arguments
+ a1 - 32-bit address of the kernel arguments table
+ a2 - 32-bit address of the environment variables table
+ a3 - RAM size in bytes
+*/
+
+static void write_bootloader (CPUState *env, unsigned long bios_offset, int64_t kernel_entry)
+{
+ uint32_t *p;
+
+ /* Small bootloader */
+ p = (uint32_t *) (phys_ram_base + bios_offset);
+ stl_raw(p++, 0x0bf00160); /* j 0x1fc00580 */
+ stl_raw(p++, 0x00000000); /* nop */
+
+ /* YAMON service vector */
+ stl_raw(phys_ram_base + bios_offset + 0x500, 0xbfc00580); /* start: */
+ stl_raw(phys_ram_base + bios_offset + 0x504, 0xbfc0083c); /* print_count: */
+ stl_raw(phys_ram_base + bios_offset + 0x520, 0xbfc00580); /* start: */
+ stl_raw(phys_ram_base + bios_offset + 0x52c, 0xbfc00800); /* flush_cache: */
+ stl_raw(phys_ram_base + bios_offset + 0x534, 0xbfc00808); /* print: */
+ stl_raw(phys_ram_base + bios_offset + 0x538, 0xbfc00800); /* reg_cpu_isr: */
+ stl_raw(phys_ram_base + bios_offset + 0x53c, 0xbfc00800); /* unred_cpu_isr: */
+ stl_raw(phys_ram_base + bios_offset + 0x540, 0xbfc00800); /* reg_ic_isr: */
+ stl_raw(phys_ram_base + bios_offset + 0x544, 0xbfc00800); /* unred_ic_isr: */
+ stl_raw(phys_ram_base + bios_offset + 0x548, 0xbfc00800); /* reg_esr: */
+ stl_raw(phys_ram_base + bios_offset + 0x54c, 0xbfc00800); /* unreg_esr: */
+ stl_raw(phys_ram_base + bios_offset + 0x550, 0xbfc00800); /* getchar: */
+ stl_raw(phys_ram_base + bios_offset + 0x554, 0xbfc00800); /* syscon_read: */
+
+
+ /* Second part of the bootloader */
+ p = (uint32_t *) (phys_ram_base + bios_offset + 0x580);
+ stl_raw(p++, 0x24040002); /* addiu a0, zero, 2 */
+ stl_raw(p++, 0x3c1d0000 | (((ENVP_ADDR - 64) >> 16) & 0xffff)); /* lui sp, high(ENVP_ADDR) */
+ stl_raw(p++, 0x37bd0000 | ((ENVP_ADDR - 64) & 0xffff)); /* ori sp, sp, low(ENVP_ADDR) */
+ stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */
+ stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a1, 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(ram_size) */
+ stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(ram_size) */
+
+ /* Load BAR registers as done by YAMON */
+ stl_raw(p++, 0x3c09b400); /* lui t1, 0xb400 */
+
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c08df00); /* lui t0, 0xdf00 */
+#else
+ stl_raw(p++, 0x340800df); /* ori t0, r0, 0x00df */
+#endif
+ stl_raw(p++, 0xad280068); /* sw t0, 0x0068(t1) */
+
+ stl_raw(p++, 0x3c09bbe0); /* lui t1, 0xbbe0 */
+
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c08c000); /* lui t0, 0xc000 */
+#else
+ stl_raw(p++, 0x340800c0); /* ori t0, r0, 0x00c0 */
+#endif
+ stl_raw(p++, 0xad280048); /* sw t0, 0x0048(t1) */
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c084000); /* lui t0, 0x4000 */
+#else
+ stl_raw(p++, 0x34080040); /* ori t0, r0, 0x0040 */
+#endif
+ stl_raw(p++, 0xad280050); /* sw t0, 0x0050(t1) */
+
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c088000); /* lui t0, 0x8000 */
+#else
+ stl_raw(p++, 0x34080080); /* ori t0, r0, 0x0080 */
+#endif
+ stl_raw(p++, 0xad280058); /* sw t0, 0x0058(t1) */
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c083f00); /* lui t0, 0x3f00 */
+#else
+ stl_raw(p++, 0x3408003f); /* ori t0, r0, 0x003f */
+#endif
+ stl_raw(p++, 0xad280060); /* sw t0, 0x0060(t1) */
+
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c08c100); /* lui t0, 0xc100 */
+#else
+ stl_raw(p++, 0x340800c1); /* ori t0, r0, 0x00c1 */
+#endif
+ stl_raw(p++, 0xad280080); /* sw t0, 0x0080(t1) */
+#ifdef TARGET_WORDS_BIGENDIAN
+ stl_raw(p++, 0x3c085e00); /* lui t0, 0x5e00 */
+#else
+ stl_raw(p++, 0x3408005e); /* ori t0, r0, 0x005e */
+#endif
+ stl_raw(p++, 0xad280088); /* sw t0, 0x0088(t1) */
+
+ /* Jump to kernel code */
+ stl_raw(p++, 0x3c1f0000 | ((kernel_entry >> 16) & 0xffff)); /* lui ra, high(kernel_entry) */
+ stl_raw(p++, 0x37ff0000 | (kernel_entry & 0xffff)); /* ori ra, ra, low(kernel_entry) */
+ stl_raw(p++, 0x03e00008); /* jr ra */
+ stl_raw(p++, 0x00000000); /* nop */
+
+ /* YAMON subroutines */
+ p = (uint32_t *) (phys_ram_base + bios_offset + 0x800);
+ stl_raw(p++, 0x03e00008); /* jr ra */
+ stl_raw(p++, 0x24020000); /* li v0,0 */
+ /* 808 YAMON print */
+ stl_raw(p++, 0x03e06821); /* move t5,ra */
+ stl_raw(p++, 0x00805821); /* move t3,a0 */
+ stl_raw(p++, 0x00a05021); /* move t2,a1 */
+ stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */
+ stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */
+ stl_raw(p++, 0x10800005); /* beqz a0,834 */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x0ff0021c); /* jal 870 */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x08000205); /* j 814 */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x01a00008); /* jr t5 */
+ stl_raw(p++, 0x01602021); /* move a0,t3 */
+ /* 0x83c YAMON print_count */
+ stl_raw(p++, 0x03e06821); /* move t5,ra */
+ stl_raw(p++, 0x00805821); /* move t3,a0 */
+ stl_raw(p++, 0x00a05021); /* move t2,a1 */
+ stl_raw(p++, 0x00c06021); /* move t4,a2 */
+ stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */
+ stl_raw(p++, 0x0ff0021c); /* jal 870 */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */
+ stl_raw(p++, 0x258cffff); /* addiu t4,t4,-1 */
+ stl_raw(p++, 0x1580fffa); /* bnez t4,84c */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x01a00008); /* jr t5 */
+ stl_raw(p++, 0x01602021); /* move a0,t3 */
+ /* 0x870 */
+ stl_raw(p++, 0x3c08b800); /* lui t0,0xb400 */
+ stl_raw(p++, 0x350803f8); /* ori t0,t0,0x3f8 */
+ stl_raw(p++, 0x91090005); /* lbu t1,5(t0) */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x31290040); /* andi t1,t1,0x40 */
+ stl_raw(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */
+ stl_raw(p++, 0x00000000); /* nop */
+ stl_raw(p++, 0x03e00008); /* jr ra */
+ stl_raw(p++, 0xa1040000); /* sb a0,0(t0) */
+
+}
+
+static void prom_set(int index, const char *string, ...)
+{
+ va_list ap;
+ int32_t *p;
+ int32_t table_addr;
+ char *s;
+
+ if (index >= ENVP_NB_ENTRIES)
+ return;
+
+ p = (int32_t *) (phys_ram_base + ENVP_ADDR + VIRT_TO_PHYS_ADDEND);
+ p += index;
+
+ if (string == NULL) {
+ stl_raw(p, 0);
+ return;
+ }
+
+ table_addr = ENVP_ADDR + sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE;
+ s = (char *) (phys_ram_base + VIRT_TO_PHYS_ADDEND + table_addr);
+
+ stl_raw(p, table_addr);
+
+ va_start(ap, string);
+ vsnprintf (s, ENVP_ENTRY_SIZE, string, ap);
+ va_end(ap);
+}
+
+/* Kernel */
+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;
+
+ if (load_elf(loaderparams.kernel_filename, VIRT_TO_PHYS_ADDEND,
+ (uint64_t *)&kernel_entry, (uint64_t *)&kernel_low,
+ (uint64_t *)&kernel_high) < 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(loaderparams.initrd_filename,
+ phys_ram_base + initrd_offset);
+ }
+ if (initrd_size == (target_ulong) -1) {
+ fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
+ loaderparams.initrd_filename);
+ exit(1);
+ }
+ }
+
+ /* Store command line. */
+ prom_set(index++, loaderparams.kernel_filename);
+ if (initrd_size > 0)
+ prom_set(index++, "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s",
+ PHYS_TO_VIRT(initrd_offset), initrd_size,
+ loaderparams.kernel_cmdline);
+ else
+ prom_set(index++, loaderparams.kernel_cmdline);
+
+ /* Setup minimum environment variables */
+ prom_set(index++, "memsize");
+ prom_set(index++, "%i", loaderparams.ram_size);
+ prom_set(index++, "modetty0");
+ prom_set(index++, "38400n8r");
+ prom_set(index++, NULL);
+
+ return kernel_entry;
+}
+
+static void main_cpu_reset(void *opaque)
+{
+ CPUState *env = opaque;
+ cpu_reset(env);
+
+ /* The bootload does not need to be rewritten as it is located in a
+ read only location. The kernel location and the arguments table
+ location does not change. */
+ if (loaderparams.kernel_filename) {
+ env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL));
+ load_kernel (env);
+ }
+}
+
+static
+void mips_malta_init (ram_addr_t ram_size, int vga_ram_size,
+ const char *boot_device, DisplayState *ds,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename, const char *cpu_model)
+{
+ char buf[1024];
+ unsigned long bios_offset;
+ target_long bios_size;
+ int64_t kernel_entry;
+ PCIBus *pci_bus;
+ CPUState *env;
+ RTCState *rtc_state;
+ fdctrl_t *floppy_controller;
+ MaltaFPGAState *malta_fpga;
+ qemu_irq *i8259;
+ int piix4_devfn;
+ uint8_t *eeprom_buf;
+ i2c_bus *smbus;
+ int i;
+ int index;
+ BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
+ BlockDriverState *fd[MAX_FD];
+ int fl_idx = 0;
+ int fl_sectors = 0;
+
+ /* init CPUs */
+ if (cpu_model == NULL) {
+#ifdef TARGET_MIPS64
+ cpu_model = "20Kc";
+#else
+ cpu_model = "24Kf";
+#endif
+ }
+ env = cpu_init(cpu_model);
+ if (!env) {
+ fprintf(stderr, "Unable to find CPU definition\n");
+ exit(1);
+ }
+ qemu_register_reset(main_cpu_reset, env);
+
+ /* allocate RAM */
+ cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
+
+ /* Map the bios at two physical locations, as on the real board. */
+ bios_offset = ram_size + vga_ram_size;
+ cpu_register_physical_memory(0x1e000000LL,
+ BIOS_SIZE, bios_offset | IO_MEM_ROM);
+ cpu_register_physical_memory(0x1fc00000LL,
+ BIOS_SIZE, bios_offset | IO_MEM_ROM);
+
+ /* FPGA */
+ malta_fpga = malta_fpga_init(0x1f000000LL, env);
+
+ /* Load firmware in flash / BIOS unless we boot directly into a kernel. */
+ if (kernel_filename) {
+ /* Write a small bootloader to the flash location. */
+ 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);
+ env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL));
+ write_bootloader(env, bios_offset, kernel_entry);
+ } else {
+ index = drive_get_index(IF_PFLASH, 0, fl_idx);
+ if (index != -1) {
+ /* Load firmware from flash. */
+ bios_size = 0x400000;
+ fl_sectors = bios_size >> 16;
+#ifdef DEBUG_BOARD_INIT
+ printf("Register parallel flash %d size " TARGET_FMT_lx " at "
+ "offset %08lx addr %08llx '%s' %x\n",
+ fl_idx, bios_size, bios_offset, 0x1e000000LL,
+ bdrv_get_device_name(drives_table[index].bdrv), fl_sectors);
+#endif
+ pflash_cfi01_register(0x1e000000LL, bios_offset,
+ drives_table[index].bdrv, 65536, fl_sectors,
+ 4, 0x0000, 0x0000, 0x0000, 0x0000);
+ fl_idx++;
+ } else {
+ /* Load a BIOS image. */
+ if (bios_name == NULL)
+ bios_name = BIOS_FILENAME;
+ snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
+ bios_size = load_image(buf, phys_ram_base + bios_offset);
+ if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) {
+ fprintf(stderr,
+ "qemu: Could not load MIPS bios '%s', and no -kernel argument was specified\n",
+ buf);
+ exit(1);
+ }
+ }
+ /* In little endian mode the 32bit words in the bios are swapped,
+ a neat trick which allows bi-endian firmware. */
+#ifndef TARGET_WORDS_BIGENDIAN
+ {
+ uint32_t *addr;
+ for (addr = (uint32_t *)(phys_ram_base + bios_offset);
+ addr < (uint32_t *)(phys_ram_base + bios_offset + bios_size);
+ addr++) {
+ *addr = bswap32(*addr);
+ }
+ }
+#endif
+ }
+
+ /* Board ID = 0x420 (Malta Board with CoreLV)
+ XXX: theoretically 0x1e000010 should map to flash and 0x1fc00010 should
+ map to the board ID. */
+ stl_raw(phys_ram_base + bios_offset + 0x10, 0x00000420);
+
+ /* Init internal devices */
+ cpu_mips_irq_init_cpu(env);
+ cpu_mips_clock_init(env);
+
+ /* Interrupt controller */
+ /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
+ i8259 = i8259_init(env->irq[2]);
+
+ /* Northbridge */
+ pci_bus = pci_gt64120_init(i8259);
+
+ /* Southbridge */
+
+ 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++) {
+ index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
+ if (index != -1)
+ hd[i] = drives_table[index].bdrv;
+ else
+ hd[i] = NULL;
+ }
+
+ piix4_devfn = piix4_init(pci_bus, 80);
+ pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1, i8259);
+ usb_uhci_piix4_init(pci_bus, piix4_devfn + 2);
+ smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100, i8259[9]);
+ eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
+ for (i = 0; i < 8; i++) {
+ /* TODO: Populate SPD eeprom data. */
+ smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
+ }
+ pit = pit_init(0x40, i8259[0]);
+ DMA_init(0);
+
+ /* Super I/O */
+ i8042_init(i8259[1], i8259[12], 0x60);
+ rtc_state = rtc_init(0x70, i8259[8]);
+ if (serial_hds[0])
+ serial_init(0x3f8, i8259[4], 115200, serial_hds[0]);
+ if (serial_hds[1])
+ serial_init(0x2f8, i8259[3], 115200, serial_hds[1]);
+ if (parallel_hds[0])
+ parallel_init(0x378, i8259[7], parallel_hds[0]);
+ for(i = 0; i < MAX_FD; i++) {
+ index = drive_get_index(IF_FLOPPY, 0, i);
+ if (index != -1)
+ fd[i] = drives_table[index].bdrv;
+ else
+ fd[i] = NULL;
+ }
+ floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
+
+ /* Sound card */
+#ifdef HAS_AUDIO
+ audio_init(pci_bus);
+#endif
+
+ /* Network card */
+ network_init(pci_bus);
+
+ /* Optional PCI video card */
+ pci_cirrus_vga_init(pci_bus, ds, phys_ram_base + ram_size,
+ ram_size, vga_ram_size);
+}
+
+QEMUMachine mips_malta_machine = {
+ .name = "malta",
+ .desc = "MIPS Malta Core LV",
+ .init = mips_malta_init,
+ .ram_require = VGA_RAM_SIZE + BIOS_SIZE,
+ .nodisk_ok = 1,
+};