diff options
Diffstat (limited to 'hw/ppc.c')
| -rw-r--r-- | hw/ppc.c | 248 |
1 files changed, 239 insertions, 9 deletions
@@ -23,11 +23,6 @@ */ #include "vl.h" -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); - /*****************************************************************************/ /* PPC time base and decrementer emulation */ //#define DEBUG_TB @@ -202,14 +197,249 @@ void cpu_ppc_reset (CPUState *env) } #endif +static void PPC_io_writeb (target_phys_addr_t addr, uint32_t value) +{ + cpu_outb(NULL, addr & 0xffff, value); +} + +static uint32_t PPC_io_readb (target_phys_addr_t addr) +{ + uint32_t ret = cpu_inb(NULL, addr & 0xffff); + return ret; +} + +static void PPC_io_writew (target_phys_addr_t addr, uint32_t value) +{ +#ifdef TARGET_WORDS_BIGENDIAN + value = bswap16(value); +#endif + cpu_outw(NULL, addr & 0xffff, value); +} + +static uint32_t PPC_io_readw (target_phys_addr_t addr) +{ + uint32_t ret = cpu_inw(NULL, addr & 0xffff); +#ifdef TARGET_WORDS_BIGENDIAN + ret = bswap16(ret); +#endif + return ret; +} + +static void PPC_io_writel (target_phys_addr_t addr, uint32_t value) +{ +#ifdef TARGET_WORDS_BIGENDIAN + value = bswap32(value); +#endif + cpu_outl(NULL, addr & 0xffff, value); +} + +static uint32_t PPC_io_readl (target_phys_addr_t addr) +{ + uint32_t ret = cpu_inl(NULL, addr & 0xffff); + +#ifdef TARGET_WORDS_BIGENDIAN + ret = bswap32(ret); +#endif + return ret; +} + +CPUWriteMemoryFunc *PPC_io_write[] = { + &PPC_io_writeb, + &PPC_io_writew, + &PPC_io_writel, +}; + +CPUReadMemoryFunc *PPC_io_read[] = { + &PPC_io_readb, + &PPC_io_readw, + &PPC_io_readl, +}; + +/*****************************************************************************/ +/* Debug port */ +void PREP_debug_write (void *opaque, uint32_t addr, uint32_t val) +{ + addr &= 0xF; + switch (addr) { + case 0: + printf("%c", val); + break; + case 1: + printf("\n"); + fflush(stdout); + break; + case 2: + printf("Set loglevel to %04x\n", val); + cpu_set_log(val); + break; + } +} + +/*****************************************************************************/ +/* NVRAM helpers */ +void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value) +{ + m48t59_set_addr(nvram, addr); + m48t59_write(nvram, value); +} + +uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr) +{ + m48t59_set_addr(nvram, addr); + return m48t59_read(nvram); +} + +void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value) +{ + m48t59_set_addr(nvram, addr); + m48t59_write(nvram, value >> 8); + m48t59_set_addr(nvram, addr + 1); + m48t59_write(nvram, value & 0xFF); +} + +uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr) +{ + uint16_t tmp; + + m48t59_set_addr(nvram, addr); + tmp = m48t59_read(nvram) << 8; + m48t59_set_addr(nvram, addr + 1); + tmp |= m48t59_read(nvram); + + return tmp; +} + +void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value) +{ + m48t59_set_addr(nvram, addr); + m48t59_write(nvram, value >> 24); + m48t59_set_addr(nvram, addr + 1); + m48t59_write(nvram, (value >> 16) & 0xFF); + m48t59_set_addr(nvram, addr + 2); + m48t59_write(nvram, (value >> 8) & 0xFF); + m48t59_set_addr(nvram, addr + 3); + m48t59_write(nvram, value & 0xFF); +} + +uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr) +{ + uint32_t tmp; + + m48t59_set_addr(nvram, addr); + tmp = m48t59_read(nvram) << 24; + m48t59_set_addr(nvram, addr + 1); + tmp |= m48t59_read(nvram) << 16; + m48t59_set_addr(nvram, addr + 2); + tmp |= m48t59_read(nvram) << 8; + m48t59_set_addr(nvram, addr + 3); + tmp |= m48t59_read(nvram); + + return tmp; +} + +void NVRAM_set_string (m48t59_t *nvram, uint32_t addr, + const unsigned char *str, uint32_t max) +{ + int i; + + for (i = 0; i < max && str[i] != '\0'; i++) { + m48t59_set_addr(nvram, addr + i); + m48t59_write(nvram, str[i]); + } + m48t59_set_addr(nvram, addr + max - 1); + m48t59_write(nvram, '\0'); +} + +int NVRAM_get_string (m48t59_t *nvram, uint8_t *dst, uint16_t addr, int max) +{ + int i; + + memset(dst, 0, max); + for (i = 0; i < max; i++) { + dst[i] = NVRAM_get_byte(nvram, addr + i); + if (dst[i] == '\0') + break; + } + + return i; +} + +static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value) +{ + uint16_t tmp; + uint16_t pd, pd1, pd2; + + tmp = prev >> 8; + pd = prev ^ value; + pd1 = pd & 0x000F; + pd2 = ((pd >> 4) & 0x000F) ^ pd1; + tmp ^= (pd1 << 3) | (pd1 << 8); + tmp ^= pd2 | (pd2 << 7) | (pd2 << 12); + + return tmp; +} + +uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count) +{ + uint32_t i; + uint16_t crc = 0xFFFF; + int odd; + + odd = count & 1; + count &= ~1; + for (i = 0; i != count; i++) { + crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i)); + } + if (odd) { + crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8); + } + + return crc; +} + +int PPC_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size, + const unsigned char *arch, + uint32_t RAM_size, int boot_device, + uint32_t kernel_image, uint32_t kernel_size, + uint32_t cmdline, uint32_t cmdline_size, + uint32_t initrd_image, uint32_t initrd_size, + uint32_t NVRAM_image) +{ + uint16_t crc; + + /* Set parameters for Open Hack'Ware BIOS */ + NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16); + NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */ + NVRAM_set_word(nvram, 0x14, NVRAM_size); + NVRAM_set_string(nvram, 0x20, arch, 16); + NVRAM_set_lword(nvram, 0x30, RAM_size); + NVRAM_set_byte(nvram, 0x34, boot_device); + NVRAM_set_lword(nvram, 0x38, kernel_image); + NVRAM_set_lword(nvram, 0x3C, kernel_size); + NVRAM_set_lword(nvram, 0x40, cmdline); + NVRAM_set_lword(nvram, 0x44, cmdline_size); + NVRAM_set_lword(nvram, 0x48, initrd_image); + NVRAM_set_lword(nvram, 0x4C, initrd_size); + NVRAM_set_lword(nvram, 0x50, NVRAM_image); + crc = NVRAM_compute_crc(nvram, 0x00, 0x5C); + NVRAM_set_word(nvram, 0x5C, crc); + + return 0; + } + /*****************************************************************************/ void ppc_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) { - /* For now, only PREP is supported */ - return ppc_prep_init(ram_size, vga_ram_size, boot_device, ds, fd_filename, - snapshot, kernel_filename, kernel_cmdline, - initrd_filename); + if (prep_enabled) { + ppc_prep_init(ram_size, vga_ram_size, boot_device, ds, fd_filename, + snapshot, kernel_filename, kernel_cmdline, + initrd_filename); + } else { + ppc_chrp_init(ram_size, vga_ram_size, boot_device, ds, fd_filename, + snapshot, kernel_filename, kernel_cmdline, + initrd_filename); + } } |