| /* |
| * QEMU PPC PREP hardware System Emulator |
| * |
| * Copyright (c) 2003-2004 Jocelyn Mayer |
| * |
| * 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 "vl.h" |
| |
| //#define HARD_DEBUG_PPC_IO |
| //#define DEBUG_PPC_IO |
| |
| #define BIOS_FILENAME "ppc_rom.bin" |
| #define KERNEL_LOAD_ADDR 0x01000000 |
| #define INITRD_LOAD_ADDR 0x01800000 |
| |
| extern int loglevel; |
| extern FILE *logfile; |
| |
| #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO) |
| #define DEBUG_PPC_IO |
| #endif |
| |
| #if defined (HARD_DEBUG_PPC_IO) |
| #define PPC_IO_DPRINTF(fmt, args...) \ |
| do { \ |
| if (loglevel & CPU_LOG_IOPORT) { \ |
| fprintf(logfile, "%s: " fmt, __func__ , ##args); \ |
| } else { \ |
| printf("%s : " fmt, __func__ , ##args); \ |
| } \ |
| } while (0) |
| #elif defined (DEBUG_PPC_IO) |
| #define PPC_IO_DPRINTF(fmt, args...) \ |
| do { \ |
| if (loglevel & CPU_LOG_IOPORT) { \ |
| fprintf(logfile, "%s: " fmt, __func__ , ##args); \ |
| } \ |
| } while (0) |
| #else |
| #define PPC_IO_DPRINTF(fmt, args...) do { } while (0) |
| #endif |
| |
| /* Constants for devices init */ |
| static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
| static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
| static const int ide_irq[2] = { 13, 13 }; |
| |
| #define NE2000_NB_MAX 6 |
| |
| static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
| static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
| |
| //static PITState *pit; |
| |
| /* ISA IO ports bridge */ |
| #define PPC_IO_BASE 0x80000000 |
| |
| /* Speaker port 0x61 */ |
| int speaker_data_on; |
| int dummy_refresh_clock; |
| |
| static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
| { |
| #if 0 |
| speaker_data_on = (val >> 1) & 1; |
| pit_set_gate(pit, 2, val & 1); |
| #endif |
| } |
| |
| static uint32_t speaker_ioport_read(void *opaque, uint32_t addr) |
| { |
| #if 0 |
| int out; |
| out = pit_get_out(pit, 2, qemu_get_clock(vm_clock)); |
| dummy_refresh_clock ^= 1; |
| return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) | |
| (dummy_refresh_clock << 4); |
| #endif |
| return 0; |
| } |
| |
| /* PCI intack register */ |
| /* Read-only register (?) */ |
| static void _PPC_intack_write (void *opaque, target_phys_addr_t addr, uint32_t value) |
| { |
| // printf("%s: 0x%08x => 0x%08x\n", __func__, addr, value); |
| } |
| |
| static inline uint32_t _PPC_intack_read (target_phys_addr_t addr) |
| { |
| uint32_t retval = 0; |
| |
| if (addr == 0xBFFFFFF0) |
| retval = pic_intack_read(NULL); |
| // printf("%s: 0x%08x <= %d\n", __func__, addr, retval); |
| |
| return retval; |
| } |
| |
| static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr) |
| { |
| return _PPC_intack_read(addr); |
| } |
| |
| static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr) |
| { |
| #ifdef TARGET_WORDS_BIGENDIAN |
| return bswap16(_PPC_intack_read(addr)); |
| #else |
| return _PPC_intack_read(addr); |
| #endif |
| } |
| |
| static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr) |
| { |
| #ifdef TARGET_WORDS_BIGENDIAN |
| return bswap32(_PPC_intack_read(addr)); |
| #else |
| return _PPC_intack_read(addr); |
| #endif |
| } |
| |
| static CPUWriteMemoryFunc *PPC_intack_write[] = { |
| &_PPC_intack_write, |
| &_PPC_intack_write, |
| &_PPC_intack_write, |
| }; |
| |
| static CPUReadMemoryFunc *PPC_intack_read[] = { |
| &PPC_intack_readb, |
| &PPC_intack_readw, |
| &PPC_intack_readl, |
| }; |
| |
| /* PowerPC control and status registers */ |
| #if 0 // Not used |
| static struct { |
| /* IDs */ |
| uint32_t veni_devi; |
| uint32_t revi; |
| /* Control and status */ |
| uint32_t gcsr; |
| uint32_t xcfr; |
| uint32_t ct32; |
| uint32_t mcsr; |
| /* General purpose registers */ |
| uint32_t gprg[6]; |
| /* Exceptions */ |
| uint32_t feen; |
| uint32_t fest; |
| uint32_t fema; |
| uint32_t fecl; |
| uint32_t eeen; |
| uint32_t eest; |
| uint32_t eecl; |
| uint32_t eeint; |
| uint32_t eemck0; |
| uint32_t eemck1; |
| /* Error diagnostic */ |
| } XCSR; |
| |
| static void PPC_XCSR_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) |
| { |
| printf("%s: 0x%08lx => 0x%08x\n", __func__, (long)addr, value); |
| } |
| |
| static void PPC_XCSR_writew (void *opaque, target_phys_addr_t addr, uint32_t value) |
| { |
| #ifdef TARGET_WORDS_BIGENDIAN |
| value = bswap16(value); |
| #endif |
| printf("%s: 0x%08lx => 0x%08x\n", __func__, (long)addr, value); |
| } |
| |
| static void PPC_XCSR_writel (void *opaque, target_phys_addr_t addr, uint32_t value) |
| { |
| #ifdef TARGET_WORDS_BIGENDIAN |
| value = bswap32(value); |
| #endif |
| printf("%s: 0x%08lx => 0x%08x\n", __func__, (long)addr, value); |
| } |
| |
| static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr) |
| { |
| uint32_t retval = 0; |
| |
| printf("%s: 0x%08lx <= %d\n", __func__, (long)addr, retval); |
| |
| return retval; |
| } |
| |
| static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr) |
| { |
| uint32_t retval = 0; |
| |
| printf("%s: 0x%08lx <= %d\n", __func__, (long)addr, retval); |
| #ifdef TARGET_WORDS_BIGENDIAN |
| retval = bswap16(retval); |
| #endif |
| |
| return retval; |
| } |
| |
| static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr) |
| { |
| uint32_t retval = 0; |
| |
| printf("%s: 0x%08lx <= %d\n", __func__, (long)addr, retval); |
| #ifdef TARGET_WORDS_BIGENDIAN |
| retval = bswap32(retval); |
| #endif |
| |
| return retval; |
| } |
| |
| static CPUWriteMemoryFunc *PPC_XCSR_write[] = { |
| &PPC_XCSR_writeb, |
| &PPC_XCSR_writew, |
| &PPC_XCSR_writel, |
| }; |
| |
| static CPUReadMemoryFunc *PPC_XCSR_read[] = { |
| &PPC_XCSR_readb, |
| &PPC_XCSR_readw, |
| &PPC_XCSR_readl, |
| }; |
| #endif |
| |
| /* Fake super-io ports for PREP platform (Intel 82378ZB) */ |
| typedef struct sysctrl_t { |
| m48t59_t *nvram; |
| uint8_t state; |
| uint8_t syscontrol; |
| uint8_t fake_io[2]; |
| } sysctrl_t; |
| |
| enum { |
| STATE_HARDFILE = 0x01, |
| }; |
| |
| static sysctrl_t *sysctrl; |
| |
| static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val) |
| { |
| sysctrl_t *sysctrl = opaque; |
| |
| PPC_IO_DPRINTF("0x%08lx => 0x%08x\n", (long)addr - PPC_IO_BASE, val); |
| sysctrl->fake_io[addr - 0x0398] = val; |
| } |
| |
| static uint32_t PREP_io_read (void *opaque, uint32_t addr) |
| { |
| sysctrl_t *sysctrl = opaque; |
| |
| PPC_IO_DPRINTF("0x%08lx <= 0x%08x\n", (long)addr - PPC_IO_BASE, |
| sysctrl->fake_io[addr - 0x0398]); |
| return sysctrl->fake_io[addr - 0x0398]; |
| } |
| |
| static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val) |
| { |
| sysctrl_t *sysctrl = opaque; |
| |
| PPC_IO_DPRINTF("0x%08lx => 0x%08x\n", (long)addr - PPC_IO_BASE, val); |
| switch (addr) { |
| case 0x0092: |
| /* Special port 92 */ |
| /* Check soft reset asked */ |
| if (val & 0x01) { |
| // cpu_interrupt(cpu_single_env, CPU_INTERRUPT_RESET); |
| } |
| /* Check LE mode */ |
| if (val & 0x02) { |
| printf("Little Endian mode isn't supported (yet ?)\n"); |
| abort(); |
| } |
| break; |
| case 0x0800: |
| /* Motorola CPU configuration register : read-only */ |
| break; |
| case 0x0802: |
| /* Motorola base module feature register : read-only */ |
| break; |
| case 0x0803: |
| /* Motorola base module status register : read-only */ |
| break; |
| case 0x0808: |
| /* Hardfile light register */ |
| if (val & 1) |
| sysctrl->state |= STATE_HARDFILE; |
| else |
| sysctrl->state &= ~STATE_HARDFILE; |
| break; |
| case 0x0810: |
| /* Password protect 1 register */ |
| if (sysctrl->nvram != NULL) |
| m48t59_toggle_lock(sysctrl->nvram, 1); |
| break; |
| case 0x0812: |
| /* Password protect 2 register */ |
| if (sysctrl->nvram != NULL) |
| m48t59_toggle_lock(sysctrl->nvram, 2); |
| break; |
| case 0x0814: |
| /* L2 invalidate register */ |
| // tlb_flush(cpu_single_env, 1); |
| break; |
| case 0x081C: |
| /* system control register */ |
| sysctrl->syscontrol = val & 0x0F; |
| break; |
| case 0x0850: |
| /* I/O map type register */ |
| if (!(val & 0x01)) { |
| printf("No support for non-continuous I/O map mode\n"); |
| abort(); |
| } |
| break; |
| default: |
| printf("ERROR: unaffected IO port write: %04lx => %02x\n", |
| (long)addr, val); |
| break; |
| } |
| } |
| |
| static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr) |
| { |
| sysctrl_t *sysctrl = opaque; |
| uint32_t retval = 0xFF; |
| |
| switch (addr) { |
| case 0x0092: |
| /* Special port 92 */ |
| retval = 0x00; |
| break; |
| case 0x0800: |
| /* Motorola CPU configuration register */ |
| retval = 0xEF; /* MPC750 */ |
| break; |
| case 0x0802: |
| /* Motorola Base module feature register */ |
| retval = 0xAD; /* No ESCC, PMC slot neither ethernet */ |
| break; |
| case 0x0803: |
| /* Motorola base module status register */ |
| retval = 0xE0; /* Standard MPC750 */ |
| break; |
| case 0x080C: |
| /* Equipment present register: |
| * no L2 cache |
| * no upgrade processor |
| * no cards in PCI slots |
| * SCSI fuse is bad |
| */ |
| retval = 0x3C; |
| break; |
| case 0x0810: |
| /* Motorola base module extended feature register */ |
| retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */ |
| break; |
| case 0x0818: |
| /* Keylock */ |
| retval = 0x00; |
| break; |
| case 0x081C: |
| /* system control register |
| * 7 - 6 / 1 - 0: L2 cache enable |
| */ |
| retval = sysctrl->syscontrol; |
| break; |
| case 0x0823: |
| /* */ |
| retval = 0x03; /* no L2 cache */ |
| break; |
| case 0x0850: |
| /* I/O map type register */ |
| retval = 0x01; |
| break; |
| default: |
| printf("ERROR: unaffected IO port: %04lx read\n", (long)addr); |
| break; |
| } |
| PPC_IO_DPRINTF("0x%08lx <= 0x%08x\n", (long)addr - PPC_IO_BASE, retval); |
| |
| return retval; |
| } |
| |
| extern CPUPPCState *global_env; |
| |
| #define NVRAM_SIZE 0x2000 |
| |
| /* PowerPC PREP hardware initialisation */ |
| void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device, |
| DisplayState *ds, const char **fd_filename, int snapshot, |
| const char *kernel_filename, const char *kernel_cmdline, |
| const char *initrd_filename) |
| { |
| char buf[1024]; |
| m48t59_t *nvram; |
| int PPC_io_memory; |
| int ret, linux_boot, i, nb_nics1; |
| unsigned long bios_offset; |
| uint32_t kernel_base, kernel_size, initrd_base, initrd_size; |
| PCIBus *pci_bus; |
| |
| sysctrl = qemu_mallocz(sizeof(sysctrl_t)); |
| if (sysctrl == NULL) |
| return; |
| |
| linux_boot = (kernel_filename != NULL); |
| |
| /* allocate RAM */ |
| cpu_register_physical_memory(0, ram_size, IO_MEM_RAM); |
| |
| /* allocate and load BIOS */ |
| bios_offset = ram_size + vga_ram_size; |
| snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME); |
| ret = load_image(buf, phys_ram_base + bios_offset); |
| if (ret != BIOS_SIZE) { |
| fprintf(stderr, "qemu: could not load PPC PREP bios '%s'\n", buf); |
| exit(1); |
| } |
| cpu_register_physical_memory((uint32_t)(-BIOS_SIZE), |
| BIOS_SIZE, bios_offset | IO_MEM_ROM); |
| cpu_single_env->nip = 0xfffffffc; |
| |
| if (linux_boot) { |
| kernel_base = KERNEL_LOAD_ADDR; |
| /* now we can load the kernel */ |
| kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base); |
| if (kernel_size < 0) { |
| fprintf(stderr, "qemu: could not load kernel '%s'\n", |
| kernel_filename); |
| exit(1); |
| } |
| /* load initrd */ |
| if (initrd_filename) { |
| initrd_base = INITRD_LOAD_ADDR; |
| initrd_size = load_image(initrd_filename, |
| phys_ram_base + initrd_base); |
| if (initrd_size < 0) { |
| fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", |
| initrd_filename); |
| exit(1); |
| } |
| } else { |
| initrd_base = 0; |
| initrd_size = 0; |
| } |
| boot_device = 'm'; |
| } else { |
| kernel_base = 0; |
| kernel_size = 0; |
| initrd_base = 0; |
| initrd_size = 0; |
| } |
| |
| /* Register CPU as a 74x/75x */ |
| cpu_ppc_register(cpu_single_env, 0x00080000); |
| /* Set time-base frequency to 100 Mhz */ |
| cpu_ppc_tb_init(cpu_single_env, 100UL * 1000UL * 1000UL); |
| |
| isa_mem_base = 0xc0000000; |
| pci_bus = pci_prep_init(); |
| /* Register 64 KB of ISA IO space */ |
| PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL); |
| cpu_register_physical_memory(0x80000000, 0x00010000, PPC_io_memory); |
| |
| /* init basic PC hardware */ |
| vga_initialize(pci_bus, ds, phys_ram_base + ram_size, ram_size, |
| vga_ram_size); |
| rtc_init(0x70, 8); |
| // openpic = openpic_init(0x00000000, 0xF0000000, 1); |
| // pic_init(openpic); |
| pic_init(); |
| // pit = pit_init(0x40, 0); |
| |
| serial_init(0x3f8, 4, serial_hds[0]); |
| nb_nics1 = nb_nics; |
| if (nb_nics1 > NE2000_NB_MAX) |
| nb_nics1 = NE2000_NB_MAX; |
| for(i = 0; i < nb_nics1; i++) { |
| isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]); |
| } |
| |
| for(i = 0; i < 2; i++) { |
| isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i], |
| bs_table[2 * i], bs_table[2 * i + 1]); |
| } |
| kbd_init(); |
| DMA_init(1); |
| // AUD_init(); |
| // SB16_init(); |
| |
| fdctrl_init(6, 2, 0, 0x3f0, fd_table); |
| |
| /* Register speaker port */ |
| register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL); |
| register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL); |
| /* Register fake IO ports for PREP */ |
| register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl); |
| register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl); |
| /* System control ports */ |
| register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl); |
| register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl); |
| register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl); |
| register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl); |
| /* PCI intack location */ |
| PPC_io_memory = cpu_register_io_memory(0, PPC_intack_read, |
| PPC_intack_write, NULL); |
| cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory); |
| /* PowerPC control and status register group */ |
| #if 0 |
| PPC_io_memory = cpu_register_io_memory(0, PPC_XCSR_read, PPC_XCSR_write, NULL); |
| cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory); |
| #endif |
| |
| nvram = m48t59_init(8, 0, 0x0074, NVRAM_SIZE); |
| if (nvram == NULL) |
| return; |
| sysctrl->nvram = nvram; |
| |
| /* Initialise NVRAM */ |
| PPC_NVRAM_set_params(nvram, NVRAM_SIZE, "PREP", ram_size, boot_device, |
| kernel_base, kernel_size, |
| kernel_cmdline, |
| initrd_base, initrd_size, |
| /* XXX: need an option to load a NVRAM image */ |
| 0, |
| graphic_width, graphic_height, graphic_depth); |
| } |
