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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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 * Copyright (c) 2004-2007 Fabrice Bellard
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 * Copyright (c) 2007 Jocelyn Mayer
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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#include "hw.h"
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#include "ppc.h"
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#include "ppc_mac.h"
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#include "mac_dbdma.h"
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#include "nvram.h"
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#include "pc.h"
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#include "sysemu.h"
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#include "net.h"
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#include "isa.h"
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#include "pci.h"
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#include "usb-ohci.h"
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#include "boards.h"
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#include "fw_cfg.h"
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#include "escc.h"
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#include "ide.h"
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#include "loader.h"
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#include "elf.h"
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#include "kvm.h"
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#include "kvm_ppc.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
60

    
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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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    return 0;
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}
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static void ppc_heathrow_init (ram_addr_t ram_size,
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                               const char *boot_device,
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                               const char *kernel_filename,
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                               const char *kernel_cmdline,
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                               const char *initrd_filename,
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                               const char *cpu_model)
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{
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    CPUState *env = NULL, *envs[MAX_CPUS];
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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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    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 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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    /* init CPUs */
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    if (cpu_model == NULL)
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        cpu_model = "G3";
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    for (i = 0; i < smp_cpus; i++) {
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        env = cpu_init(cpu_model);
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        if (!env) {
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            fprintf(stderr, "Unable to find PowerPC CPU definition\n");
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            exit(1);
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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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    /* Make sure all register sets take effect */
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    cpu_synchronize_state(env);
170

    
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    /* allocate RAM */
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    if (ram_size > (2047 << 20)) {
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        fprintf(stderr,
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                "qemu: Too much memory for this machine: %d MB, maximum 2047 MB\n",
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                ((unsigned int)ram_size / (1 << 20)));
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        exit(1);
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    }
178

    
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    ram_offset = qemu_ram_alloc(ram_size);
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    cpu_register_physical_memory(0, ram_size, ram_offset);
181

    
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    /* allocate and load BIOS */
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    bios_offset = qemu_ram_alloc(BIOS_SIZE);
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    if (bios_name == NULL)
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        bios_name = PROM_FILENAME;
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    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
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    cpu_register_physical_memory(PROM_ADDR, BIOS_SIZE, bios_offset | IO_MEM_ROM);
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    /* Load OpenBIOS (ELF) */
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    if (filename) {
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        bios_size = load_elf(filename, 0, NULL, NULL, NULL,
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                               1, ELF_MACHINE, 0);
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        qemu_free(filename);
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    } else {
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        bios_size = -1;
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    }
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    if (bios_size < 0 || bios_size > BIOS_SIZE) {
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        hw_error("qemu: could not load PowerPC bios '%s'\n", bios_name);
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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(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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    }
231

    
232
    if (linux_boot) {
233
        uint64_t lowaddr = 0;
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        int bswap_needed;
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236
#ifdef BSWAP_NEEDED
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        bswap_needed = 1;
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#else
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        bswap_needed = 0;
240
#endif
241
        kernel_base = KERNEL_LOAD_ADDR;
242
        /* Now we can load the kernel. The first step tries to load the kernel
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           supposing PhysAddr = 0x00000000. If that was wrong the kernel is
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           loaded again, the new PhysAddr being computed from lowaddr. */
245
        kernel_size = load_elf(kernel_filename, kernel_base, NULL, &lowaddr, NULL,
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                               1, ELF_MACHINE, 0);
247
        if (kernel_size > 0 && lowaddr != KERNEL_LOAD_ADDR) {
248
            kernel_size = load_elf(kernel_filename, (2 * kernel_base) - lowaddr,
249
                                   NULL, NULL, NULL, 1, ELF_MACHINE, 0);
250
        }
251
        if (kernel_size < 0)
252
            kernel_size = load_aout(kernel_filename, kernel_base,
253
                                    ram_size - kernel_base, bswap_needed,
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                                    TARGET_PAGE_SIZE);
255
        if (kernel_size < 0)
256
            kernel_size = load_image_targphys(kernel_filename,
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                                              kernel_base,
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                                              ram_size - kernel_base);
259
        if (kernel_size < 0) {
260
            hw_error("qemu: could not load kernel '%s'\n",
261
                      kernel_filename);
262
            exit(1);
263
        }
264
        /* load initrd */
265
        if (initrd_filename) {
266
            initrd_base = INITRD_LOAD_ADDR;
267
            initrd_size = load_image_targphys(initrd_filename, initrd_base,
268
                                              ram_size - initrd_base);
269
            if (initrd_size < 0) {
270
                hw_error("qemu: could not load initial ram disk '%s'\n",
271
                         initrd_filename);
272
                exit(1);
273
            }
274
        } else {
275
            initrd_base = 0;
276
            initrd_size = 0;
277
        }
278
        ppc_boot_device = 'm';
279
    } else {
280
        kernel_base = 0;
281
        kernel_size = 0;
282
        initrd_base = 0;
283
        initrd_size = 0;
284
        ppc_boot_device = '\0';
285
        for (i = 0; boot_device[i] != '\0'; i++) {
286
            /* TOFIX: for now, the second IDE channel is not properly
287
             *        used by OHW. The Mac floppy disk are not emulated.
288
             *        For now, OHW cannot boot from the network.
289
             */
290
#if 0
291
            if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
292
                ppc_boot_device = boot_device[i];
293
                break;
294
            }
295
#else
296
            if (boot_device[i] >= 'c' && boot_device[i] <= 'd') {
297
                ppc_boot_device = boot_device[i];
298
                break;
299
            }
300
#endif
301
        }
302
        if (ppc_boot_device == '\0') {
303
            fprintf(stderr, "No valid boot device for G3 Beige machine\n");
304
            exit(1);
305
        }
306
    }
307

    
308
    isa_mem_base = 0x80000000;
309

    
310
    /* Register 2 MB of ISA IO space */
311
    isa_mmio_init(0xfe000000, 0x00200000);
312

    
313
    /* XXX: we register only 1 output pin for heathrow PIC */
314
    heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));
315
    heathrow_irqs[0] =
316
        qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1);
317
    /* Connect the heathrow PIC outputs to the 6xx bus */
318
    for (i = 0; i < smp_cpus; i++) {
319
        switch (PPC_INPUT(env)) {
320
        case PPC_FLAGS_INPUT_6xx:
321
            heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);
322
            heathrow_irqs[i][0] =
323
                ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
324
            break;
325
        default:
326
            hw_error("Bus model not supported on OldWorld Mac machine\n");
327
        }
328
    }
329

    
330
    /* init basic PC hardware */
331
    if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
332
        hw_error("Only 6xx bus is supported on heathrow machine\n");
333
    }
334
    pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
335
    pci_bus = pci_grackle_init(0xfec00000, pic);
336
    pci_vga_init(pci_bus, vga_bios_offset, vga_bios_size);
337

    
338
    escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
339
                               serial_hds[1], ESCC_CLOCK, 4);
340

    
341
    for(i = 0; i < nb_nics; i++)
342
        pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
343

    
344

    
345
    if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
346
        fprintf(stderr, "qemu: too many IDE bus\n");
347
        exit(1);
348
    }
349

    
350
    /* First IDE channel is a MAC IDE on the MacIO bus */
351
    hd[0] = drive_get(IF_IDE, 0, 0);
352
    hd[1] = drive_get(IF_IDE, 0, 1);
353
    dbdma = DBDMA_init(&dbdma_mem_index);
354
    ide_mem_index[0] = -1;
355
    ide_mem_index[1] = pmac_ide_init(hd, pic[0x0D], dbdma, 0x16, pic[0x02]);
356

    
357
    /* Second IDE channel is a CMD646 on the PCI bus */
358
    hd[0] = drive_get(IF_IDE, 1, 0);
359
    hd[1] = drive_get(IF_IDE, 1, 1);
360
    hd[3] = hd[2] = NULL;
361
    pci_cmd646_ide_init(pci_bus, hd, 0);
362

    
363
    /* cuda also initialize ADB */
364
    cuda_init(&cuda_mem_index, pic[0x12]);
365

    
366
    adb_kbd_init(&adb_bus);
367
    adb_mouse_init(&adb_bus);
368

    
369
    nvr = macio_nvram_init(&nvram_mem_index, 0x2000, 4);
370
    pmac_format_nvram_partition(nvr, 0x2000);
371

    
372
    macio_init(pci_bus, PCI_DEVICE_ID_APPLE_343S1201, 1, pic_mem_index,
373
               dbdma_mem_index, cuda_mem_index, nvr, 2, ide_mem_index,
374
               escc_mem_index);
375

    
376
    if (usb_enabled) {
377
        usb_ohci_init_pci(pci_bus, -1);
378
    }
379

    
380
    if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
381
        graphic_depth = 15;
382

    
383
    /* No PCI init: the BIOS will do it */
384

    
385
    fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
386
    fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
387
    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
388
    fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
389
    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
390
    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
391
    if (kernel_cmdline) {
392
        fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
393
        pstrcpy_targphys("cmdline", CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
394
    } else {
395
        fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
396
    }
397
    fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
398
    fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
399
    fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
400

    
401
    fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);
402
    fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);
403
    fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);
404

    
405
    if (kvm_enabled()) {
406
#ifdef CONFIG_KVM
407
        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());
408
#endif
409
    } else {
410
        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());
411
    }
412

    
413
    qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
414
}
415

    
416
static QEMUMachine heathrow_machine = {
417
    .name = "g3beige",
418
    .desc = "Heathrow based PowerMAC",
419
    .init = ppc_heathrow_init,
420
    .max_cpus = MAX_CPUS,
421
#ifndef TARGET_PPC64
422
    .is_default = 1,
423
#endif
424
};
425

    
426
static void heathrow_machine_init(void)
427
{
428
    qemu_register_machine(&heathrow_machine);
429
}
430

    
431
machine_init(heathrow_machine_init);