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qemu-irix/hw/ppc_chrp.c

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/*
* QEMU PPC CHRP/PMAC hardware System Emulator
*
* Copyright (c) 2004 Fabrice Bellard
*
* 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 BIOS_FILENAME "ppc_rom.bin"
#define VGABIOS_FILENAME "video.x"
#define NVRAM_SIZE 0x2000
#define KERNEL_LOAD_ADDR 0x01000000
#define INITRD_LOAD_ADDR 0x01800000
/* MacIO devices (mapped inside the MacIO address space): CUDA, DBDMA,
NVRAM */
static int dbdma_mem_index;
static int cuda_mem_index;
static int ide0_mem_index = -1;
static int ide1_mem_index = -1;
static int openpic_mem_index = -1;
static int heathrow_pic_mem_index = -1;
static int macio_nvram_mem_index = -1;
/* DBDMA: currently no op - should suffice right now */
static void dbdma_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
{
printf("%s: 0x%08x <= 0x%08x\n", __func__, addr, value);
}
static void dbdma_writew (void *opaque, target_phys_addr_t addr, uint32_t value)
{
}
static void dbdma_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
{
}
static uint32_t dbdma_readb (void *opaque, target_phys_addr_t addr)
{
printf("%s: 0x%08x => 0x00000000\n", __func__, addr);
return 0;
}
static uint32_t dbdma_readw (void *opaque, target_phys_addr_t addr)
{
return 0;
}
static uint32_t dbdma_readl (void *opaque, target_phys_addr_t addr)
{
return 0;
}
static CPUWriteMemoryFunc *dbdma_write[] = {
&dbdma_writeb,
&dbdma_writew,
&dbdma_writel,
};
static CPUReadMemoryFunc *dbdma_read[] = {
&dbdma_readb,
&dbdma_readw,
&dbdma_readl,
};
/* macio style NVRAM device */
typedef struct MacIONVRAMState {
uint8_t data[0x2000];
} MacIONVRAMState;
static void macio_nvram_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
{
MacIONVRAMState *s = opaque;
addr = (addr >> 4) & 0x1fff;
s->data[addr] = value;
// printf("macio_nvram_writeb %04x = %02x\n", addr, value);
}
static uint32_t macio_nvram_readb (void *opaque, target_phys_addr_t addr)
{
MacIONVRAMState *s = opaque;
uint32_t value;
addr = (addr >> 4) & 0x1fff;
value = s->data[addr];
// printf("macio_nvram_readb %04x = %02x\n", addr, value);
return value;
}
static CPUWriteMemoryFunc *macio_nvram_write[] = {
&macio_nvram_writeb,
&macio_nvram_writeb,
&macio_nvram_writeb,
};
static CPUReadMemoryFunc *macio_nvram_read[] = {
&macio_nvram_readb,
&macio_nvram_readb,
&macio_nvram_readb,
};
static MacIONVRAMState *macio_nvram_init(void)
{
MacIONVRAMState *s;
s = qemu_mallocz(sizeof(MacIONVRAMState));
if (!s)
return NULL;
macio_nvram_mem_index = cpu_register_io_memory(0, macio_nvram_read,
macio_nvram_write, s);
return s;
}
static void macio_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
if (heathrow_pic_mem_index >= 0) {
cpu_register_physical_memory(addr + 0x00000, 0x1000,
heathrow_pic_mem_index);
}
cpu_register_physical_memory(addr + 0x08000, 0x1000, dbdma_mem_index);
cpu_register_physical_memory(addr + 0x16000, 0x2000, cuda_mem_index);
if (ide0_mem_index >= 0)
cpu_register_physical_memory(addr + 0x1f000, 0x1000, ide0_mem_index);
if (ide1_mem_index >= 0)
cpu_register_physical_memory(addr + 0x20000, 0x1000, ide1_mem_index);
if (openpic_mem_index >= 0) {
cpu_register_physical_memory(addr + 0x40000, 0x40000,
openpic_mem_index);
}
if (macio_nvram_mem_index >= 0)
cpu_register_physical_memory(addr + 0x60000, 0x20000, macio_nvram_mem_index);
}
static void macio_init(PCIBus *bus, int device_id)
{
PCIDevice *d;
d = pci_register_device(bus, "macio", sizeof(PCIDevice),
-1, NULL, NULL);
/* Note: this code is strongly inspirated from the corresponding code
in PearPC */
d->config[0x00] = 0x6b; // vendor_id
d->config[0x01] = 0x10;
d->config[0x02] = device_id;
d->config[0x03] = device_id >> 8;
d->config[0x0a] = 0x00; // class_sub = pci2pci
d->config[0x0b] = 0xff; // class_base = bridge
d->config[0x0e] = 0x00; // header_type
d->config[0x3d] = 0x01; // interrupt on pin 1
dbdma_mem_index = cpu_register_io_memory(0, dbdma_read, dbdma_write, NULL);
pci_register_io_region(d, 0, 0x80000,
PCI_ADDRESS_SPACE_MEM, macio_map);
}
/* UniN device */
static void unin_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
{
}
static uint32_t unin_readl (void *opaque, target_phys_addr_t addr)
{
return 0;
}
static CPUWriteMemoryFunc *unin_write[] = {
&unin_writel,
&unin_writel,
&unin_writel,
};
static CPUReadMemoryFunc *unin_read[] = {
&unin_readl,
&unin_readl,
&unin_readl,
};
/* temporary frame buffer OSI calls for the video.x driver. The right
solution is to modify the driver to use VGA PCI I/Os */
static int vga_osi_call(CPUState *env)
{
static int vga_vbl_enabled;
int linesize;
// printf("osi_call R5=%d\n", env->gpr[5]);
/* same handler as PearPC, coming from the original MOL video
driver. */
switch(env->gpr[5]) {
case 4:
break;
case 28: /* set_vmode */
if (env->gpr[6] != 1 || env->gpr[7] != 0)
env->gpr[3] = 1;
else
env->gpr[3] = 0;
break;
case 29: /* get_vmode_info */
if (env->gpr[6] != 0) {
if (env->gpr[6] != 1 || env->gpr[7] != 0) {
env->gpr[3] = 1;
break;
}
}
env->gpr[3] = 0;
env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */
env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */
env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */
env->gpr[7] = 85 << 16; /* refresh rate */
env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */
linesize = ((graphic_depth + 7) >> 3) * graphic_width;
linesize = (linesize + 3) & ~3;
env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */
break;
case 31: /* set_video power */
env->gpr[3] = 0;
break;
case 39: /* video_ctrl */
if (env->gpr[6] == 0 || env->gpr[6] == 1)
vga_vbl_enabled = env->gpr[6];
env->gpr[3] = 0;
break;
case 47:
break;
case 59: /* set_color */
/* R6 = index, R7 = RGB */
env->gpr[3] = 0;
break;
case 64: /* get color */
/* R6 = index */
env->gpr[3] = 0;
break;
case 116: /* set hwcursor */
/* R6 = x, R7 = y, R8 = visible, R9 = data */
break;
default:
fprintf(stderr, "unsupported OSI call R5=%08x\n", env->gpr[5]);
break;
}
return 1; /* osi_call handled */
}
/* XXX: suppress that */
static void pic_irq_request(void *opaque, int level)
{
}
static uint8_t nvram_chksum(const uint8_t *buf, int n)
{
int sum, i;
sum = 0;
for(i = 0; i < n; i++)
sum += buf[i];
return (sum & 0xff) + (sum >> 8);
}
/* set a free Mac OS NVRAM partition */
void pmac_format_nvram_partition(uint8_t *buf, int len)
{
char partition_name[12] = "wwwwwwwwwwww";
buf[0] = 0x7f; /* free partition magic */
buf[1] = 0; /* checksum */
buf[2] = len >> 8;
buf[3] = len;
memcpy(buf + 4, partition_name, 12);
buf[1] = nvram_chksum(buf, 16);
}
/* PowerPC CHRP hardware initialisation */
static void ppc_chrp_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,
int is_heathrow)
{
CPUState *env;
char buf[1024];
SetIRQFunc *set_irq;
void *pic;
m48t59_t *nvram;
int PPC_io_memory, unin_memory;
int linux_boot, i;
unsigned long bios_offset, vga_bios_offset;
uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
ppc_def_t *def;
PCIBus *pci_bus;
const char *arch_name;
int vga_bios_size, bios_size;
linux_boot = (kernel_filename != NULL);
/* init CPUs */
env = cpu_init();
register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
/* Register CPU as a 74x/75x */
/* XXX: CPU model (or PVR) should be provided on command line */
// ppc_find_by_name("750gx", &def); // Linux boot OK
// ppc_find_by_name("750fx", &def); // Linux boot OK
/* Linux does not boot on 750cxe (and probably other 750cx based)
* because it assumes it has 8 IBAT & DBAT pairs as it only have 4.
*/
// ppc_find_by_name("750cxe", &def);
// ppc_find_by_name("750p", &def);
// ppc_find_by_name("740p", &def);
ppc_find_by_name("750", &def);
// ppc_find_by_name("740", &def);
// ppc_find_by_name("G3", &def);
// ppc_find_by_name("604r", &def);
// ppc_find_by_name("604e", &def);
// ppc_find_by_name("604", &def);
if (def == NULL) {
cpu_abort(env, "Unable to find PowerPC CPU definition\n");
}
cpu_ppc_register(env, def);
/* Set time-base frequency to 100 Mhz */
cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
env->osi_call = vga_osi_call;
/* 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);
bios_size = load_image(buf, phys_ram_base + bios_offset);
if (bios_size < 0 || bios_size > BIOS_SIZE) {
fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n", buf);
exit(1);
}
bios_size = (bios_size + 0xfff) & ~0xfff;
cpu_register_physical_memory((uint32_t)(-bios_size),
bios_size, bios_offset | IO_MEM_ROM);
/* allocate and load VGA BIOS */
vga_bios_offset = bios_offset + bios_size;
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8);
if (vga_bios_size < 0) {
/* if no bios is present, we can still work */
fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf);
vga_bios_size = 0;
} else {
/* set a specific header (XXX: find real Apple format for NDRV
drivers) */
phys_ram_base[vga_bios_offset] = 'N';
phys_ram_base[vga_bios_offset + 1] = 'D';
phys_ram_base[vga_bios_offset + 2] = 'R';
phys_ram_base[vga_bios_offset + 3] = 'V';
cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4),
vga_bios_size);
vga_bios_size += 8;
}
vga_bios_size = (vga_bios_size + 0xfff) & ~0xfff;
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;
}
if (is_heathrow) {
isa_mem_base = 0x80000000;
/* Register 2 MB of ISA IO space */
PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL);
cpu_register_physical_memory(0xfe000000, 0x00200000, PPC_io_memory);
/* init basic PC hardware */
pic = heathrow_pic_init(&heathrow_pic_mem_index);
set_irq = heathrow_pic_set_irq;
pci_bus = pci_grackle_init(0xfec00000, pic);
vga_initialize(pci_bus, ds, phys_ram_base + ram_size,
ram_size, vga_ram_size,
vga_bios_offset, vga_bios_size);
/* XXX: suppress that */
isa_pic = pic_init(pic_irq_request, NULL);
/* XXX: use Mac Serial port */
serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
for(i = 0; i < nb_nics; i++) {
if (!nd_table[i].model)
nd_table[i].model = "ne2k_pci";
pci_nic_init(pci_bus, &nd_table[i]);
}
pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);
/* cuda also initialize ADB */
cuda_mem_index = cuda_init(set_irq, pic, 0x12);
adb_kbd_init(&adb_bus);
adb_mouse_init(&adb_bus);
{
MacIONVRAMState *nvr;
nvr = macio_nvram_init();
pmac_format_nvram_partition(nvr->data, 0x2000);
}
macio_init(pci_bus, 0x0017);
nvram = m48t59_init(8, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
arch_name = "HEATHROW";
} else {
isa_mem_base = 0x80000000;
/* Register 8 MB of ISA IO space */
PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL);
cpu_register_physical_memory(0xF2000000, 0x00800000, PPC_io_memory);
/* UniN init */
unin_memory = cpu_register_io_memory(0, unin_read, unin_write, NULL);
cpu_register_physical_memory(0xf8000000, 0x00001000, unin_memory);
pic = openpic_init(NULL, &openpic_mem_index, 1, &env);
set_irq = openpic_set_irq;
pci_bus = pci_pmac_init(pic);
/* init basic PC hardware */
vga_initialize(pci_bus, ds, phys_ram_base + ram_size,
ram_size, vga_ram_size,
vga_bios_offset, vga_bios_size);
/* XXX: suppress that */
isa_pic = pic_init(pic_irq_request, NULL);
/* XXX: use Mac Serial port */
serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
for(i = 0; i < nb_nics; i++) {
pci_ne2000_init(pci_bus, &nd_table[i]);
}
#if 1
ide0_mem_index = pmac_ide_init(&bs_table[0], set_irq, pic, 0x13);
ide1_mem_index = pmac_ide_init(&bs_table[2], set_irq, pic, 0x14);
#else
pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);
#endif
/* cuda also initialize ADB */
cuda_mem_index = cuda_init(set_irq, pic, 0x19);
adb_kbd_init(&adb_bus);
adb_mouse_init(&adb_bus);
macio_init(pci_bus, 0x0022);
nvram = m48t59_init(8, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
arch_name = "MAC99";
}
if (usb_enabled) {
usb_ohci_init(pci_bus, 3, -1);
}
if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
graphic_depth = 15;
PPC_NVRAM_set_params(nvram, NVRAM_SIZE, arch_name, 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);
/* No PCI init: the BIOS will do it */
/* Special port to get debug messages from Open-Firmware */
register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
}
static void ppc_core99_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_chrp_init(ram_size, vga_ram_size, boot_device,
ds, fd_filename, snapshot,
kernel_filename, kernel_cmdline,
initrd_filename, 0);
}
static void ppc_heathrow_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_chrp_init(ram_size, vga_ram_size, boot_device,
ds, fd_filename, snapshot,
kernel_filename, kernel_cmdline,
initrd_filename, 1);
}
QEMUMachine core99_machine = {
"mac99",
"Mac99 based PowerMAC",
ppc_core99_init,
};
QEMUMachine heathrow_machine = {
"g3bw",
"Heathrow based PowerMAC",
ppc_heathrow_init,
};
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