| /* |
| * 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 "mips_cpudevs.h" |
| #include "pci.h" |
| #include "usb-uhci.h" |
| #include "vmware_vga.h" |
| #include "qemu-char.h" |
| #include "sysemu.h" |
| #include "arch_init.h" |
| #include "boards.h" |
| #include "qemu-log.h" |
| #include "mips-bios.h" |
| #include "ide.h" |
| #include "loader.h" |
| #include "elf.h" |
| #include "mc146818rtc.h" |
| #include "blockdev.h" |
| |
| //#define DEBUG_BOARD_INIT |
| |
| #define ENVP_ADDR 0x80002000l |
| #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, ...) fprintf(stderr, "MALTA\t%-24s" fmt, __func__, ## __VA_ARGS__) |
| #else |
| # define logout(fmt, ...) ((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 * const malta_fpga_read[] = { |
| malta_fpga_readl, |
| malta_fpga_readl, |
| malta_fpga_readl |
| }; |
| |
| static CPUWriteMemoryFunc * const 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, " "); |
| } |
| |
| static void malta_fpga_led_init(CharDriverState *chr) |
| { |
| qemu_chr_printf(chr, "\e[HMalta LEDBAR\r\n"); |
| qemu_chr_printf(chr, "+--------+\r\n"); |
| qemu_chr_printf(chr, "+ +\r\n"); |
| qemu_chr_printf(chr, "+--------+\r\n"); |
| qemu_chr_printf(chr, "\n"); |
| qemu_chr_printf(chr, "Malta ASCII\r\n"); |
| qemu_chr_printf(chr, "+--------+\r\n"); |
| qemu_chr_printf(chr, "+ +\r\n"); |
| qemu_chr_printf(chr, "+--------+\r\n"); |
| } |
| |
| static MaltaFPGAState *malta_fpga_init(target_phys_addr_t base, qemu_irq uart_irq, CharDriverState *uart_chr) |
| { |
| MaltaFPGAState *s; |
| int malta; |
| |
| s = (MaltaFPGAState *)qemu_mallocz(sizeof(MaltaFPGAState)); |
| |
| malta = cpu_register_io_memory(malta_fpga_read, |
| malta_fpga_write, s, |
| DEVICE_NATIVE_ENDIAN); |
| |
| 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", malta_fpga_led_init); |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| s->uart = serial_mm_init(base + 0x900, 3, uart_irq, 230400, uart_chr, 1, 1); |
| #else |
| s->uart = serial_mm_init(base + 0x900, 3, uart_irq, 230400, uart_chr, 1, 0); |
| #endif |
| |
| malta_fpga_reset(s); |
| qemu_register_reset(malta_fpga_reset, s); |
| |
| return s; |
| } |
| |
| /* 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, "pcnet") == 0)) |
| /* The malta board has a PCNet card using PCI SLOT 11 */ |
| default_devaddr = "0b"; |
| |
| pci_nic_init_nofail(nd, "pcnet", default_devaddr); |
| } |
| } |
| |
| /* 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, uint8_t *base, |
| int64_t kernel_entry) |
| { |
| uint32_t *p; |
| |
| /* Small bootloader */ |
| p = (uint32_t *)base; |
| stl_raw(p++, 0x0bf00160); /* j 0x1fc00580 */ |
| stl_raw(p++, 0x00000000); /* nop */ |
| |
| /* YAMON service vector */ |
| stl_raw(base + 0x500, 0xbfc00580); /* start: */ |
| stl_raw(base + 0x504, 0xbfc0083c); /* print_count: */ |
| stl_raw(base + 0x520, 0xbfc00580); /* start: */ |
| stl_raw(base + 0x52c, 0xbfc00800); /* flush_cache: */ |
| stl_raw(base + 0x534, 0xbfc00808); /* print: */ |
| stl_raw(base + 0x538, 0xbfc00800); /* reg_cpu_isr: */ |
| stl_raw(base + 0x53c, 0xbfc00800); /* unred_cpu_isr: */ |
| stl_raw(base + 0x540, 0xbfc00800); /* reg_ic_isr: */ |
| stl_raw(base + 0x544, 0xbfc00800); /* unred_ic_isr: */ |
| stl_raw(base + 0x548, 0xbfc00800); /* reg_esr: */ |
| stl_raw(base + 0x54c, 0xbfc00800); /* unreg_esr: */ |
| stl_raw(base + 0x550, 0xbfc00800); /* getchar: */ |
| stl_raw(base + 0x554, 0xbfc00800); /* syscon_read: */ |
| |
| |
| /* Second part of the bootloader */ |
| p = (uint32_t *) (base + 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 *) (base + 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 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); |
| } |
| |
| /* Kernel */ |
| static int64_t load_kernel (void) |
| { |
| int64_t kernel_entry, kernel_high; |
| long initrd_size; |
| ram_addr_t initrd_offset; |
| int big_endian; |
| uint32_t *prom_buf; |
| long prom_size; |
| int prom_index = 0; |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| big_endian = 1; |
| #else |
| big_endian = 0; |
| #endif |
| |
| if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL, |
| (uint64_t *)&kernel_entry, NULL, (uint64_t *)&kernel_high, |
| big_endian, 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, prom_index++, "%s", loaderparams.kernel_filename); |
| if (initrd_size > 0) { |
| prom_set(prom_buf, prom_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, prom_index++, "%s", loaderparams.kernel_cmdline); |
| } |
| |
| prom_set(prom_buf, prom_index++, "memsize"); |
| prom_set(prom_buf, prom_index++, "%i", loaderparams.ram_size); |
| prom_set(prom_buf, prom_index++, "modetty0"); |
| prom_set(prom_buf, prom_index++, "38400n8r"); |
| prom_set(prom_buf, prom_index++, NULL); |
| |
| rom_add_blob_fixed("prom", prom_buf, prom_size, |
| cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR)); |
| |
| return kernel_entry; |
| } |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| CPUState *env = opaque; |
| cpu_reset(env); |
| |
| /* The bootloader 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)); |
| } |
| } |
| |
| 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_malta_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; |
| ram_addr_t ram_offset; |
| ram_addr_t bios_offset; |
| target_long bios_size; |
| int64_t kernel_entry; |
| PCIBus *pci_bus; |
| CPUState *env; |
| qemu_irq *i8259; |
| qemu_irq *cpu_exit_irq; |
| int piix4_devfn; |
| uint8_t *eeprom_buf; |
| i2c_bus *smbus; |
| int i; |
| DriveInfo *dinfo; |
| DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
| DriveInfo *fd[MAX_FD]; |
| int fl_idx = 0; |
| int fl_sectors = 0; |
| int be; |
| |
| /* Make sure the first 3 serial ports are associated with a device. */ |
| for(i = 0; i < 3; i++) { |
| if (!serial_hds[i]) { |
| char label[32]; |
| snprintf(label, sizeof(label), "serial%d", i); |
| serial_hds[i] = qemu_chr_open(label, "null", NULL); |
| } |
| } |
| |
| /* 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 */ |
| if (ram_size > (256 << 20)) { |
| fprintf(stderr, |
| "qemu: Too much memory for this machine: %d MB, maximum 256 MB\n", |
| ((unsigned int)ram_size / (1 << 20))); |
| exit(1); |
| } |
| ram_offset = qemu_ram_alloc(NULL, "mips_malta.ram", ram_size); |
| bios_offset = qemu_ram_alloc(NULL, "mips_malta.bios", BIOS_SIZE); |
| |
| |
| cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM); |
| |
| /* Map the bios at two physical locations, as on the real board. */ |
| cpu_register_physical_memory(0x1e000000LL, |
| BIOS_SIZE, bios_offset | IO_MEM_ROM); |
| cpu_register_physical_memory(0x1fc00000LL, |
| BIOS_SIZE, bios_offset | IO_MEM_ROM); |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| be = 1; |
| #else |
| be = 0; |
| #endif |
| /* FPGA */ |
| malta_fpga_init(0x1f000000LL, env->irq[2], serial_hds[2]); |
| |
| /* 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(); |
| write_bootloader(env, qemu_get_ram_ptr(bios_offset), kernel_entry); |
| } else { |
| dinfo = drive_get(IF_PFLASH, 0, fl_idx); |
| if (dinfo) { |
| /* 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(dinfo->bdrv), fl_sectors); |
| #endif |
| pflash_cfi01_register(0x1e000000LL, bios_offset, |
| dinfo->bdrv, 65536, fl_sectors, |
| 4, 0x0000, 0x0000, 0x0000, 0x0000, be); |
| fl_idx++; |
| } else { |
| /* Load a BIOS image. */ |
| if (bios_name == NULL) |
| bios_name = BIOS_FILENAME; |
| 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', and no -kernel argument was specified\n", |
| bios_name); |
| 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 = qemu_get_ram_ptr(bios_offset);; |
| uint32_t *end = addr + bios_size; |
| while (addr < end) { |
| bswap32s(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_p(qemu_get_ram_ptr(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 = gt64120_register(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++) { |
| hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); |
| } |
| |
| piix4_devfn = piix4_init(pci_bus, 80); |
| isa_bus_irqs(i8259); |
| pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1); |
| usb_uhci_piix4_init(pci_bus, piix4_devfn + 2); |
| smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100, isa_reserve_irq(9), |
| NULL, NULL, 0); |
| eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ |
| for (i = 0; i < 8; i++) { |
| /* TODO: Populate SPD eeprom data. */ |
| DeviceState *eeprom; |
| eeprom = qdev_create((BusState *)smbus, "smbus-eeprom"); |
| qdev_prop_set_uint8(eeprom, "address", 0x50 + i); |
| qdev_prop_set_ptr(eeprom, "data", eeprom_buf + (i * 256)); |
| qdev_init_nofail(eeprom); |
| } |
| pit = pit_init(0x40, isa_reserve_irq(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); |
| serial_isa_init(0, serial_hds[0]); |
| serial_isa_init(1, serial_hds[1]); |
| if (parallel_hds[0]) |
| parallel_init(0, parallel_hds[0]); |
| for(i = 0; i < MAX_FD; i++) { |
| fd[i] = drive_get(IF_FLOPPY, 0, i); |
| } |
| fdctrl_init_isa(fd); |
| |
| /* Sound card */ |
| audio_init(NULL, pci_bus); |
| |
| /* Network card */ |
| network_init(); |
| |
| /* Optional PCI video card */ |
| if (cirrus_vga_enabled) { |
| pci_cirrus_vga_init(pci_bus); |
| } else if (vmsvga_enabled) { |
| pci_vmsvga_init(pci_bus); |
| } else if (std_vga_enabled) { |
| pci_vga_init(pci_bus); |
| } |
| } |
| |
| static QEMUMachine mips_malta_machine = { |
| .name = "malta", |
| .desc = "MIPS Malta Core LV", |
| .init = mips_malta_init, |
| .is_default = 1, |
| }; |
| |
| static void mips_malta_machine_init(void) |
| { |
| qemu_register_machine(&mips_malta_machine); |
| } |
| |
| machine_init(mips_malta_machine_init); |
