diff options
Diffstat (limited to 'qemu/hw/mips/mips_malta.c')
| -rw-r--r-- | qemu/hw/mips/mips_malta.c | 1270 |
1 files changed, 0 insertions, 1270 deletions
diff --git a/qemu/hw/mips/mips_malta.c b/qemu/hw/mips/mips_malta.c deleted file mode 100644 index fa769e5c0..000000000 --- a/qemu/hw/mips/mips_malta.c +++ /dev/null @@ -1,1270 +0,0 @@ -/* - * 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 "qemu/osdep.h" -#include "qemu-common.h" -#include "cpu.h" -#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 "sysemu/block-backend.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 "sysemu/arch_init.h" -#include "qemu/log.h" -#include "hw/mips/bios.h" -#include "hw/ide.h" -#include "hw/loader.h" -#include "elf.h" -#include "hw/timer/mc146818rtc.h" -#include "hw/timer/i8254.h" -#include "sysemu/block-backend.h" -#include "sysemu/blockdev.h" -#include "exec/address-spaces.h" -#include "hw/sysbus.h" /* SysBusDevice */ -#include "qemu/host-utils.h" -#include "sysemu/qtest.h" -#include "qemu/error-report.h" -#include "hw/empty_slot.h" -#include "sysemu/kvm.h" -#include "exec/semihost.h" -#include "hw/mips/cps.h" - -//#define DEBUG_BOARD_INIT - -#define ENVP_ADDR 0x80002000l -#define ENVP_NB_ENTRIES 16 -#define ENVP_ENTRY_SIZE 256 - -/* Hardware addresses */ -#define FLASH_ADDRESS 0x1e000000ULL -#define FPGA_ADDRESS 0x1f000000ULL -#define RESET_ADDRESS 0x1fc00000ULL - -#define FLASH_SIZE 0x400000 - -#define MAX_IDE_BUS 2 - -typedef struct { - MemoryRegion iomem; - MemoryRegion iomem_lo; /* 0 - 0x900 */ - MemoryRegion iomem_hi; /* 0xa00 - 0x100000 */ - 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; - -#define TYPE_MIPS_MALTA "mips-malta" -#define MIPS_MALTA(obj) OBJECT_CHECK(MaltaState, (obj), TYPE_MIPS_MALTA) - -typedef struct { - SysBusDevice parent_obj; - - MIPSCPSState *cps; - qemu_irq *i8259; -} MaltaState; - -static ISADevice *pit; - -static struct _loaderparams { - int ram_size, ram_low_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_fe_printf(s->display, "\e[H\n\n|\e[32m%-8.8s\e[00m|\r\n", leds_text); - qemu_chr_fe_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 spd_eeprom = { - .contents = { - /* 00000000: */ 0x80,0x08,0xFF,0x0D,0x0A,0xFF,0x40,0x00, - /* 00000008: */ 0x01,0x75,0x54,0x00,0x82,0x08,0x00,0x01, - /* 00000010: */ 0x8F,0x04,0x02,0x01,0x01,0x00,0x00,0x00, - /* 00000018: */ 0x00,0x00,0x00,0x14,0x0F,0x14,0x2D,0xFF, - /* 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 void generate_eeprom_spd(uint8_t *eeprom, ram_addr_t ram_size) -{ - enum { SDR = 0x4, DDR2 = 0x8 } type; - uint8_t *spd = spd_eeprom.contents; - uint8_t nbanks = 0; - uint16_t density = 0; - int i; - - /* work in terms of MB */ - ram_size >>= 20; - - while ((ram_size >= 4) && (nbanks <= 2)) { - int sz_log2 = MIN(31 - clz32(ram_size), 14); - nbanks++; - density |= 1 << (sz_log2 - 2); - ram_size -= 1 << sz_log2; - } - - /* split to 2 banks if possible */ - if ((nbanks == 1) && (density > 1)) { - nbanks++; - density >>= 1; - } - - if (density & 0xff00) { - density = (density & 0xe0) | ((density >> 8) & 0x1f); - type = DDR2; - } else if (!(density & 0x1f)) { - type = DDR2; - } else { - type = SDR; - } - - if (ram_size) { - fprintf(stderr, "Warning: SPD cannot represent final %dMB" - " of SDRAM\n", (int)ram_size); - } - - /* fill in SPD memory information */ - spd[2] = type; - spd[5] = nbanks; - spd[31] = density; - - /* checksum */ - spd[63] = 0; - for (i = 0; i < 63; i++) { - spd[63] += spd[i]; - } - - /* copy for SMBUS */ - memcpy(eeprom, spd, sizeof(spd_eeprom.contents)); -} - -static void generate_eeprom_serial(uint8_t *eeprom) -{ - int i, pos = 0; - uint8_t mac[6] = { 0x00 }; - uint8_t sn[5] = { 0x01, 0x23, 0x45, 0x67, 0x89 }; - - /* version */ - eeprom[pos++] = 0x01; - - /* count */ - eeprom[pos++] = 0x02; - - /* MAC address */ - eeprom[pos++] = 0x01; /* MAC */ - eeprom[pos++] = 0x06; /* length */ - memcpy(&eeprom[pos], mac, sizeof(mac)); - pos += sizeof(mac); - - /* serial number */ - eeprom[pos++] = 0x02; /* serial */ - eeprom[pos++] = 0x05; /* length */ - memcpy(&eeprom[pos], sn, sizeof(sn)); - pos += sizeof(sn); - - /* checksum */ - eeprom[pos] = 0; - for (i = 0; i < pos; i++) { - eeprom[pos] += eeprom[i]; - } -} - -static uint8_t eeprom24c0x_read(eeprom24c0x_t *eeprom) -{ - 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(eeprom24c0x_t *eeprom, 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 uint64_t malta_fpga_read(void *opaque, hwaddr addr, - unsigned size) -{ - 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(&spd_eeprom)); - 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_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ - MaltaFPGAState *s = opaque; - uint32_t saddr; - - saddr = (addr & 0xfffff); - - switch (saddr) { - - /* SWITCH Register */ - case 0x00200: - break; - - /* JMPRS Register */ - case 0x00210: - break; - - /* LEDBAR Register */ - case 0x00408: - s->leds = val & 0xff; - malta_fpga_update_display(s); - break; - - /* ASCIIWORD Register */ - case 0x00410: - snprintf(s->display_text, 9, "%08X", (uint32_t)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(&spd_eeprom, 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 const MemoryRegionOps malta_fpga_ops = { - .read = malta_fpga_read, - .write = malta_fpga_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -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_fe_printf(chr, "\e[HMalta LEDBAR\r\n"); - qemu_chr_fe_printf(chr, "+--------+\r\n"); - qemu_chr_fe_printf(chr, "+ +\r\n"); - qemu_chr_fe_printf(chr, "+--------+\r\n"); - qemu_chr_fe_printf(chr, "\n"); - qemu_chr_fe_printf(chr, "Malta ASCII\r\n"); - qemu_chr_fe_printf(chr, "+--------+\r\n"); - qemu_chr_fe_printf(chr, "+ +\r\n"); - qemu_chr_fe_printf(chr, "+--------+\r\n"); -} - -static MaltaFPGAState *malta_fpga_init(MemoryRegion *address_space, - hwaddr base, qemu_irq uart_irq, CharDriverState *uart_chr) -{ - MaltaFPGAState *s; - - s = (MaltaFPGAState *)g_malloc0(sizeof(MaltaFPGAState)); - - memory_region_init_io(&s->iomem, NULL, &malta_fpga_ops, s, - "malta-fpga", 0x100000); - memory_region_init_alias(&s->iomem_lo, NULL, "malta-fpga", - &s->iomem, 0, 0x900); - memory_region_init_alias(&s->iomem_hi, NULL, "malta-fpga", - &s->iomem, 0xa00, 0x10000-0xa00); - - memory_region_add_subregion(address_space, base, &s->iomem_lo); - memory_region_add_subregion(address_space, base + 0xa00, &s->iomem_hi); - - s->display = qemu_chr_new("fpga", "vc:320x200", malta_fpga_led_init); - - s->uart = serial_mm_init(address_space, base + 0x900, 3, uart_irq, - 230400, uart_chr, DEVICE_NATIVE_ENDIAN); - - malta_fpga_reset(s); - qemu_register_reset(malta_fpga_reset, s); - - return s; -} - -/* 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, "pcnet") == 0)) - /* The malta board has a PCNet card using PCI SLOT 11 */ - default_devaddr = "0b"; - - pci_nic_init_nofail(nd, pci_bus, "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(uint8_t *base, int64_t run_addr, - int64_t kernel_entry) -{ - uint32_t *p; - - /* Small bootloader */ - p = (uint32_t *)base; - - stl_p(p++, 0x08000000 | /* j 0x1fc00580 */ - ((run_addr + 0x580) & 0x0fffffff) >> 2); - stl_p(p++, 0x00000000); /* nop */ - - /* YAMON service vector */ - stl_p(base + 0x500, run_addr + 0x0580); /* start: */ - stl_p(base + 0x504, run_addr + 0x083c); /* print_count: */ - stl_p(base + 0x520, run_addr + 0x0580); /* start: */ - stl_p(base + 0x52c, run_addr + 0x0800); /* flush_cache: */ - stl_p(base + 0x534, run_addr + 0x0808); /* print: */ - stl_p(base + 0x538, run_addr + 0x0800); /* reg_cpu_isr: */ - stl_p(base + 0x53c, run_addr + 0x0800); /* unred_cpu_isr: */ - stl_p(base + 0x540, run_addr + 0x0800); /* reg_ic_isr: */ - stl_p(base + 0x544, run_addr + 0x0800); /* unred_ic_isr: */ - stl_p(base + 0x548, run_addr + 0x0800); /* reg_esr: */ - stl_p(base + 0x54c, run_addr + 0x0800); /* unreg_esr: */ - stl_p(base + 0x550, run_addr + 0x0800); /* getchar: */ - stl_p(base + 0x554, run_addr + 0x0800); /* syscon_read: */ - - - /* Second part of the bootloader */ - p = (uint32_t *) (base + 0x580); - - if (semihosting_get_argc()) { - /* Preserve a0 content as arguments have been passed */ - stl_p(p++, 0x00000000); /* nop */ - } else { - stl_p(p++, 0x24040002); /* addiu a0, zero, 2 */ - } - stl_p(p++, 0x3c1d0000 | (((ENVP_ADDR - 64) >> 16) & 0xffff)); /* lui sp, high(ENVP_ADDR) */ - stl_p(p++, 0x37bd0000 | ((ENVP_ADDR - 64) & 0xffff)); /* ori sp, sp, low(ENVP_ADDR) */ - stl_p(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ - stl_p(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a1, low(ENVP_ADDR) */ - stl_p(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ - stl_p(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ - stl_p(p++, 0x3c070000 | (loaderparams.ram_low_size >> 16)); /* lui a3, high(ram_low_size) */ - stl_p(p++, 0x34e70000 | (loaderparams.ram_low_size & 0xffff)); /* ori a3, a3, low(ram_low_size) */ - - /* Load BAR registers as done by YAMON */ - stl_p(p++, 0x3c09b400); /* lui t1, 0xb400 */ - -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c08df00); /* lui t0, 0xdf00 */ -#else - stl_p(p++, 0x340800df); /* ori t0, r0, 0x00df */ -#endif - stl_p(p++, 0xad280068); /* sw t0, 0x0068(t1) */ - - stl_p(p++, 0x3c09bbe0); /* lui t1, 0xbbe0 */ - -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c08c000); /* lui t0, 0xc000 */ -#else - stl_p(p++, 0x340800c0); /* ori t0, r0, 0x00c0 */ -#endif - stl_p(p++, 0xad280048); /* sw t0, 0x0048(t1) */ -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c084000); /* lui t0, 0x4000 */ -#else - stl_p(p++, 0x34080040); /* ori t0, r0, 0x0040 */ -#endif - stl_p(p++, 0xad280050); /* sw t0, 0x0050(t1) */ - -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c088000); /* lui t0, 0x8000 */ -#else - stl_p(p++, 0x34080080); /* ori t0, r0, 0x0080 */ -#endif - stl_p(p++, 0xad280058); /* sw t0, 0x0058(t1) */ -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c083f00); /* lui t0, 0x3f00 */ -#else - stl_p(p++, 0x3408003f); /* ori t0, r0, 0x003f */ -#endif - stl_p(p++, 0xad280060); /* sw t0, 0x0060(t1) */ - -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c08c100); /* lui t0, 0xc100 */ -#else - stl_p(p++, 0x340800c1); /* ori t0, r0, 0x00c1 */ -#endif - stl_p(p++, 0xad280080); /* sw t0, 0x0080(t1) */ -#ifdef TARGET_WORDS_BIGENDIAN - stl_p(p++, 0x3c085e00); /* lui t0, 0x5e00 */ -#else - stl_p(p++, 0x3408005e); /* ori t0, r0, 0x005e */ -#endif - stl_p(p++, 0xad280088); /* sw t0, 0x0088(t1) */ - - /* Jump to kernel code */ - stl_p(p++, 0x3c1f0000 | ((kernel_entry >> 16) & 0xffff)); /* lui ra, high(kernel_entry) */ - stl_p(p++, 0x37ff0000 | (kernel_entry & 0xffff)); /* ori ra, ra, low(kernel_entry) */ - stl_p(p++, 0x03e00009); /* jalr ra */ - stl_p(p++, 0x00000000); /* nop */ - - /* YAMON subroutines */ - p = (uint32_t *) (base + 0x800); - stl_p(p++, 0x03e00009); /* jalr ra */ - stl_p(p++, 0x24020000); /* li v0,0 */ - /* 808 YAMON print */ - stl_p(p++, 0x03e06821); /* move t5,ra */ - stl_p(p++, 0x00805821); /* move t3,a0 */ - stl_p(p++, 0x00a05021); /* move t2,a1 */ - stl_p(p++, 0x91440000); /* lbu a0,0(t2) */ - stl_p(p++, 0x254a0001); /* addiu t2,t2,1 */ - stl_p(p++, 0x10800005); /* beqz a0,834 */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x0ff0021c); /* jal 870 */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x08000205); /* j 814 */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x01a00009); /* jalr t5 */ - stl_p(p++, 0x01602021); /* move a0,t3 */ - /* 0x83c YAMON print_count */ - stl_p(p++, 0x03e06821); /* move t5,ra */ - stl_p(p++, 0x00805821); /* move t3,a0 */ - stl_p(p++, 0x00a05021); /* move t2,a1 */ - stl_p(p++, 0x00c06021); /* move t4,a2 */ - stl_p(p++, 0x91440000); /* lbu a0,0(t2) */ - stl_p(p++, 0x0ff0021c); /* jal 870 */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x254a0001); /* addiu t2,t2,1 */ - stl_p(p++, 0x258cffff); /* addiu t4,t4,-1 */ - stl_p(p++, 0x1580fffa); /* bnez t4,84c */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x01a00009); /* jalr t5 */ - stl_p(p++, 0x01602021); /* move a0,t3 */ - /* 0x870 */ - stl_p(p++, 0x3c08b800); /* lui t0,0xb400 */ - stl_p(p++, 0x350803f8); /* ori t0,t0,0x3f8 */ - stl_p(p++, 0x91090005); /* lbu t1,5(t0) */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x31290040); /* andi t1,t1,0x40 */ - stl_p(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */ - stl_p(p++, 0x00000000); /* nop */ - stl_p(p++, 0x03e00009); /* jalr ra */ - stl_p(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; - uint64_t (*xlate_to_kseg0) (void *opaque, uint64_t addr); - -#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, EM_MIPS, 1, 0) < 0) { - fprintf(stderr, "qemu: could not load kernel '%s'\n", - loaderparams.kernel_filename); - exit(1); - } - - /* Sanity check where the kernel has been linked */ - if (kvm_enabled()) { - if (kernel_entry & 0x80000000ll) { - error_report("KVM guest kernels must be linked in useg. " - "Did you forget to enable CONFIG_KVM_GUEST?"); - exit(1); - } - - xlate_to_kseg0 = cpu_mips_kvm_um_phys_to_kseg0; - } else { - if (!(kernel_entry & 0x80000000ll)) { - error_report("KVM guest kernels aren't supported with TCG. " - "Did you unintentionally enable CONFIG_KVM_GUEST?"); - exit(1); - } - - xlate_to_kseg0 = cpu_mips_phys_to_kseg0; - } - - /* 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, prom_index++, "%s", loaderparams.kernel_filename); - if (initrd_size > 0) { - prom_set(prom_buf, prom_index++, "rd_start=0x%" PRIx64 " rd_size=%li %s", - xlate_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++, "%u", loaderparams.ram_low_size); - - prom_set(prom_buf, prom_index++, "ememsize"); - prom_set(prom_buf, prom_index++, "%u", 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)); - - g_free(prom_buf); - return kernel_entry; -} - -static void malta_mips_config(MIPSCPU *cpu) -{ - CPUMIPSState *env = &cpu->env; - CPUState *cs = CPU(cpu); - - env->mvp->CP0_MVPConf0 |= ((smp_cpus - 1) << CP0MVPC0_PVPE) | - ((smp_cpus * cs->nr_threads - 1) << CP0MVPC0_PTC); -} - -static void main_cpu_reset(void *opaque) -{ - MIPSCPU *cpu = opaque; - CPUMIPSState *env = &cpu->env; - - cpu_reset(CPU(cpu)); - - /* 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_ERL); - } - - malta_mips_config(cpu); - - if (kvm_enabled()) { - /* Start running from the bootloader we wrote to end of RAM */ - env->active_tc.PC = 0x40000000 + loaderparams.ram_low_size; - } -} - -static void create_cpu_without_cps(const char *cpu_model, - qemu_irq *cbus_irq, qemu_irq *i8259_irq) -{ - CPUMIPSState *env; - MIPSCPU *cpu; - int i; - - for (i = 0; i < smp_cpus; i++) { - cpu = cpu_mips_init(cpu_model); - if (cpu == NULL) { - fprintf(stderr, "Unable to find CPU definition\n"); - exit(1); - } - env = &cpu->env; - - /* Init internal devices */ - cpu_mips_irq_init_cpu(env); - cpu_mips_clock_init(env); - qemu_register_reset(main_cpu_reset, cpu); - } - - cpu = MIPS_CPU(first_cpu); - env = &cpu->env; - *i8259_irq = env->irq[2]; - *cbus_irq = env->irq[4]; -} - -static void create_cps(MaltaState *s, const char *cpu_model, - qemu_irq *cbus_irq, qemu_irq *i8259_irq) -{ - Error *err = NULL; - s->cps = g_new0(MIPSCPSState, 1); - - object_initialize(s->cps, sizeof(MIPSCPSState), TYPE_MIPS_CPS); - qdev_set_parent_bus(DEVICE(s->cps), sysbus_get_default()); - - object_property_set_str(OBJECT(s->cps), cpu_model, "cpu-model", &err); - object_property_set_int(OBJECT(s->cps), smp_cpus, "num-vp", &err); - object_property_set_bool(OBJECT(s->cps), true, "realized", &err); - if (err != NULL) { - error_report("%s", error_get_pretty(err)); - exit(1); - } - - sysbus_mmio_map_overlap(SYS_BUS_DEVICE(s->cps), 0, 0, 1); - - /* FIXME: When GIC is present then we should use GIC's IRQ 3. - Until then CPS exposes CPU's IRQs thus use the default IRQ 2. */ - *i8259_irq = get_cps_irq(s->cps, 2); - *cbus_irq = NULL; -} - -static void create_cpu(MaltaState *s, const char *cpu_model, - qemu_irq *cbus_irq, qemu_irq *i8259_irq) -{ - if (cpu_model == NULL) { -#ifdef TARGET_MIPS64 - cpu_model = "20Kc"; -#else - cpu_model = "24Kf"; -#endif - } - - if ((smp_cpus > 1) && cpu_supports_cps_smp(cpu_model)) { - create_cps(s, cpu_model, cbus_irq, i8259_irq); - } else { - create_cpu_without_cps(cpu_model, cbus_irq, i8259_irq); - } -} - -static -void mips_malta_init(MachineState *machine) -{ - ram_addr_t ram_size = machine->ram_size; - ram_addr_t ram_low_size; - const char *kernel_filename = machine->kernel_filename; - const char *kernel_cmdline = machine->kernel_cmdline; - const char *initrd_filename = machine->initrd_filename; - char *filename; - pflash_t *fl; - MemoryRegion *system_memory = get_system_memory(); - MemoryRegion *ram_high = g_new(MemoryRegion, 1); - MemoryRegion *ram_low_preio = g_new(MemoryRegion, 1); - MemoryRegion *ram_low_postio; - MemoryRegion *bios, *bios_copy = g_new(MemoryRegion, 1); - target_long bios_size = FLASH_SIZE; - const size_t smbus_eeprom_size = 8 * 256; - uint8_t *smbus_eeprom_buf = g_malloc0(smbus_eeprom_size); - int64_t kernel_entry, bootloader_run_addr; - PCIBus *pci_bus; - ISABus *isa_bus; - qemu_irq *isa_irq; - qemu_irq cbus_irq, i8259_irq; - int piix4_devfn; - I2CBus *smbus; - int i; - DriveInfo *dinfo; - DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; - DriveInfo *fd[MAX_FD]; - int fl_idx = 0; - int fl_sectors = bios_size >> 16; - int be; - - DeviceState *dev = qdev_create(NULL, TYPE_MIPS_MALTA); - MaltaState *s = MIPS_MALTA(dev); - - /* The whole address space decoded by the GT-64120A doesn't generate - exception when accessing invalid memory. Create an empty slot to - emulate this feature. */ - empty_slot_init(0, 0x20000000); - - qdev_init_nofail(dev); - - /* 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_new(label, "null", NULL); - } - } - - /* create CPU */ - create_cpu(s, machine->cpu_model, &cbus_irq, &i8259_irq); - - /* allocate RAM */ - if (ram_size > (2048u << 20)) { - fprintf(stderr, - "qemu: Too much memory for this machine: %d MB, maximum 2048 MB\n", - ((unsigned int)ram_size / (1 << 20))); - exit(1); - } - - /* register RAM at high address where it is undisturbed by IO */ - memory_region_allocate_system_memory(ram_high, NULL, "mips_malta.ram", - ram_size); - memory_region_add_subregion(system_memory, 0x80000000, ram_high); - - /* alias for pre IO hole access */ - memory_region_init_alias(ram_low_preio, NULL, "mips_malta_low_preio.ram", - ram_high, 0, MIN(ram_size, (256 << 20))); - memory_region_add_subregion(system_memory, 0, ram_low_preio); - - /* alias for post IO hole access, if there is enough RAM */ - if (ram_size > (512 << 20)) { - ram_low_postio = g_new(MemoryRegion, 1); - memory_region_init_alias(ram_low_postio, NULL, - "mips_malta_low_postio.ram", - ram_high, 512 << 20, - ram_size - (512 << 20)); - memory_region_add_subregion(system_memory, 512 << 20, ram_low_postio); - } - - /* generate SPD EEPROM data */ - generate_eeprom_spd(&smbus_eeprom_buf[0 * 256], ram_size); - generate_eeprom_serial(&smbus_eeprom_buf[6 * 256]); - -#ifdef TARGET_WORDS_BIGENDIAN - be = 1; -#else - be = 0; -#endif - /* FPGA */ - /* The CBUS UART is attached to the MIPS CPU INT2 pin, ie interrupt 4 */ - malta_fpga_init(system_memory, FPGA_ADDRESS, cbus_irq, serial_hds[2]); - - /* Load firmware in flash / BIOS. */ - dinfo = drive_get(IF_PFLASH, 0, fl_idx); -#ifdef DEBUG_BOARD_INIT - if (dinfo) { - printf("Register parallel flash %d size " TARGET_FMT_lx " at " - "addr %08llx '%s' %x\n", - fl_idx, bios_size, FLASH_ADDRESS, - blk_name(dinfo->bdrv), fl_sectors); - } -#endif - fl = pflash_cfi01_register(FLASH_ADDRESS, NULL, "mips_malta.bios", - BIOS_SIZE, - dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, - 65536, fl_sectors, - 4, 0x0000, 0x0000, 0x0000, 0x0000, be); - bios = pflash_cfi01_get_memory(fl); - fl_idx++; - if (kernel_filename) { - ram_low_size = MIN(ram_size, 256 << 20); - /* For KVM we reserve 1MB of RAM for running bootloader */ - if (kvm_enabled()) { - ram_low_size -= 0x100000; - bootloader_run_addr = 0x40000000 + ram_low_size; - } else { - bootloader_run_addr = 0xbfc00000; - } - - /* Write a small bootloader to the flash location. */ - loaderparams.ram_size = ram_size; - loaderparams.ram_low_size = ram_low_size; - loaderparams.kernel_filename = kernel_filename; - loaderparams.kernel_cmdline = kernel_cmdline; - loaderparams.initrd_filename = initrd_filename; - kernel_entry = load_kernel(); - - write_bootloader(memory_region_get_ram_ptr(bios), - bootloader_run_addr, kernel_entry); - if (kvm_enabled()) { - /* Write the bootloader code @ the end of RAM, 1MB reserved */ - write_bootloader(memory_region_get_ram_ptr(ram_low_preio) + - ram_low_size, - bootloader_run_addr, kernel_entry); - } - } else { - /* The flash region isn't executable from a KVM guest */ - if (kvm_enabled()) { - error_report("KVM enabled but no -kernel argument was specified. " - "Booting from flash is not supported with KVM."); - exit(1); - } - /* Load firmware from flash. */ - if (!dinfo) { - /* 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, FLASH_ADDRESS, - BIOS_SIZE); - g_free(filename); - } else { - bios_size = -1; - } - if ((bios_size < 0 || bios_size > BIOS_SIZE) && - !kernel_filename && !qtest_enabled()) { - error_report("Could not load MIPS bios '%s', and no " - "-kernel argument was specified", 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 *end, *addr = rom_ptr(FLASH_ADDRESS); - if (!addr) { - addr = memory_region_get_ram_ptr(bios); - } - end = (void *)addr + MIN(bios_size, 0x3e0000); - while (addr < end) { - bswap32s(addr); - addr++; - } - } -#endif - } - - /* - * Map the BIOS at a 2nd physical location, as on the real board. - * Copy it so that we can patch in the MIPS revision, which cannot be - * handled by an overlapping region as the resulting ROM code subpage - * regions are not executable. - */ - memory_region_init_ram(bios_copy, NULL, "bios.1fc", BIOS_SIZE, - &error_fatal); - if (!rom_copy(memory_region_get_ram_ptr(bios_copy), - FLASH_ADDRESS, BIOS_SIZE)) { - memcpy(memory_region_get_ram_ptr(bios_copy), - memory_region_get_ram_ptr(bios), BIOS_SIZE); - } - memory_region_set_readonly(bios_copy, true); - memory_region_add_subregion(system_memory, RESET_ADDRESS, bios_copy); - - /* Board ID = 0x420 (Malta Board with CoreLV) */ - stl_p(memory_region_get_ram_ptr(bios_copy) + 0x10, 0x00000420); - - /* - * We have a circular dependency problem: pci_bus depends on isa_irq, - * isa_irq is provided by i8259, i8259 depends on ISA, ISA depends - * on piix4, and piix4 depends on pci_bus. To stop the cycle we have - * qemu_irq_proxy() adds an extra bit of indirection, allowing us - * to resolve the isa_irq -> i8259 dependency after i8259 is initialized. - */ - isa_irq = qemu_irq_proxy(&s->i8259, 16); - - /* Northbridge */ - pci_bus = gt64120_register(isa_irq); - - /* Southbridge */ - ide_drive_get(hd, ARRAY_SIZE(hd)); - - piix4_devfn = piix4_init(pci_bus, &isa_bus, 80); - - /* Interrupt controller */ - /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */ - s->i8259 = i8259_init(isa_bus, i8259_irq); - - isa_bus_irqs(isa_bus, s->i8259); - pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1); - pci_create_simple(pci_bus, piix4_devfn + 2, "piix4-usb-uhci"); - smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100, - isa_get_irq(NULL, 9), NULL, 0, NULL); - smbus_eeprom_init(smbus, 8, smbus_eeprom_buf, smbus_eeprom_size); - g_free(smbus_eeprom_buf); - pit = pit_init(isa_bus, 0x40, 0, NULL); - DMA_init(isa_bus, 0); - - /* Super I/O */ - isa_create_simple(isa_bus, "i8042"); - - rtc_init(isa_bus, 2000, NULL); - serial_hds_isa_init(isa_bus, 2); - parallel_hds_isa_init(isa_bus, 1); - - for(i = 0; i < MAX_FD; i++) { - fd[i] = drive_get(IF_FLOPPY, 0, i); - } - fdctrl_init_isa(isa_bus, fd); - - /* Network card */ - network_init(pci_bus); - - /* Optional PCI video card */ - pci_vga_init(pci_bus); -} - -static int mips_malta_sysbus_device_init(SysBusDevice *sysbusdev) -{ - return 0; -} - -static void mips_malta_class_init(ObjectClass *klass, void *data) -{ - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = mips_malta_sysbus_device_init; -} - -static const TypeInfo mips_malta_device = { - .name = TYPE_MIPS_MALTA, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(MaltaState), - .class_init = mips_malta_class_init, -}; - -static void mips_malta_machine_init(MachineClass *mc) -{ - mc->desc = "MIPS Malta Core LV"; - mc->init = mips_malta_init; - mc->max_cpus = 16; - mc->is_default = 1; -} - -DEFINE_MACHINE("malta", mips_malta_machine_init) - -static void mips_malta_register_types(void) -{ - type_register_static(&mips_malta_device); -} - -type_init(mips_malta_register_types) |