Revision ae0bfb79 hw/ppc_oldworld.c
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/* |
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* QEMU OldWorld PowerMac (currently ~G3 Beige) hardware System Emulator |
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* |
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#include "blockdev.h" |
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#define MAX_IDE_BUS 2 |
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#define VGA_BIOS_SIZE 65536 |
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#define CFG_ADDR 0xf0000510 |
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/* temporary frame buffer OSI calls for the video.x driver. The right |
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solution is to modify the driver to use VGA PCI I/Os */ |
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/* XXX: to be removed. This is no way related to emulation */ |
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static int vga_osi_call (CPUState *env) |
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{
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static int vga_vbl_enabled; |
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int linesize; |
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#if 0 |
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printf("osi_call R5=%016" PRIx64 "\n", ppc_dump_gpr(env, 5));
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#endif |
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/* same handler as PearPC, coming from the original MOL video |
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driver. */ |
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switch(env->gpr[5]) {
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case 4: |
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break; |
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case 28: /* set_vmode */ |
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if (env->gpr[6] != 1 || env->gpr[7] != 0) |
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env->gpr[3] = 1; |
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else |
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env->gpr[3] = 0; |
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break; |
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case 29: /* get_vmode_info */ |
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if (env->gpr[6] != 0) {
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if (env->gpr[6] != 1 || env->gpr[7] != 0) {
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env->gpr[3] = 1; |
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break; |
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} |
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} |
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env->gpr[3] = 0; |
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env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */ |
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env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */ |
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env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */ |
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env->gpr[7] = 85 << 16; /* refresh rate */ |
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env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */ |
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linesize = ((graphic_depth + 7) >> 3) * graphic_width; |
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linesize = (linesize + 3) & ~3; |
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env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */ |
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break; |
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case 31: /* set_video power */ |
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env->gpr[3] = 0; |
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break; |
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case 39: /* video_ctrl */ |
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if (env->gpr[6] == 0 || env->gpr[6] == 1) |
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vga_vbl_enabled = env->gpr[6]; |
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env->gpr[3] = 0; |
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break; |
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case 47: |
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break; |
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case 59: /* set_color */ |
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/* R6 = index, R7 = RGB */ |
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env->gpr[3] = 0; |
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break; |
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case 64: /* get color */ |
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/* R6 = index */ |
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env->gpr[3] = 0; |
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break; |
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case 116: /* set hwcursor */ |
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/* R6 = x, R7 = y, R8 = visible, R9 = data */ |
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break; |
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default: |
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fprintf(stderr, "unsupported OSI call R5=%016" PRIx64 "\n", |
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ppc_dump_gpr(env, 5)); |
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break; |
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} |
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return 1; /* osi_call handled */ |
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} |
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static int fw_cfg_boot_set(void *opaque, const char *boot_device) |
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{
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fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]); |
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char *filename; |
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qemu_irq *pic, **heathrow_irqs; |
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int linux_boot, i; |
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ram_addr_t ram_offset, bios_offset, vga_bios_offset;
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ram_addr_t ram_offset, bios_offset; |
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uint32_t kernel_base, initrd_base; |
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int32_t kernel_size, initrd_size; |
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PCIBus *pci_bus; |
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MacIONVRAMState *nvr; |
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int vga_bios_size, bios_size;
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int bios_size; |
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int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index; |
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int escc_mem_index, ide_mem_index[2]; |
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uint16_t ppc_boot_device; |
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DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
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void *fw_cfg; |
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void *dbdma; |
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uint8_t *vga_bios_ptr; |
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linux_boot = (kernel_filename != NULL); |
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} |
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/* Set time-base frequency to 16.6 Mhz */ |
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cpu_ppc_tb_init(env, 16600000UL); |
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env->osi_call = vga_osi_call; |
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qemu_register_reset((QEMUResetHandler*)&cpu_reset, env); |
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envs[i] = env; |
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} |
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exit(1); |
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} |
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/* allocate and load VGA BIOS */ |
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vga_bios_offset = qemu_ram_alloc(NULL, "ppc_heathrow.vbios", VGA_BIOS_SIZE); |
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vga_bios_ptr = qemu_get_ram_ptr(vga_bios_offset); |
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filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, VGABIOS_FILENAME); |
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if (filename) {
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vga_bios_size = load_image(filename, vga_bios_ptr + 8); |
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qemu_free(filename); |
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} else {
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vga_bios_size = -1; |
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} |
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if (vga_bios_size < 0) {
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/* if no bios is present, we can still work */ |
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fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", |
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VGABIOS_FILENAME); |
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vga_bios_size = 0; |
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} else {
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/* set a specific header (XXX: find real Apple format for NDRV |
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drivers) */ |
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vga_bios_ptr[0] = 'N'; |
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vga_bios_ptr[1] = 'D'; |
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vga_bios_ptr[2] = 'R'; |
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vga_bios_ptr[3] = 'V'; |
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cpu_to_be32w((uint32_t *)(vga_bios_ptr + 4), vga_bios_size); |
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vga_bios_size += 8; |
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/* Round to page boundary */ |
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vga_bios_size = (vga_bios_size + TARGET_PAGE_SIZE - 1) & |
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TARGET_PAGE_MASK; |
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} |
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if (linux_boot) {
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uint64_t lowaddr = 0; |
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int bswap_needed; |
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} |
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pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs); |
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pci_bus = pci_grackle_init(0xfec00000, pic); |
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pci_vga_init(pci_bus, vga_bios_offset, vga_bios_size);
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pci_vga_init(pci_bus, 0, 0);
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escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0], |
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serial_hds[1], ESCC_CLOCK, 4); |
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