On Tue, Jun 29, 2010 at 2:35 PM, Alexander Graf <ag...@suse.de> wrote: > Intel Macs have a chip called the "AppleSMC" which they use to control > certain Apple specific parts of the hardware, like the keyboard background > light. > > That chip is also used to store a key that Mac OS X uses to decrypt binaries. > > This patch adds emulation for that chip, so we're getting one step further > to having Mac OS X run natively on Qemu. > > Signed-off-by: Alexander Graf <ag...@suse.de> > --- > Makefile.target | 2 +- > hw/applesmc.c | 225 > +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 226 insertions(+), 1 deletions(-) > create mode 100644 hw/applesmc.c > > diff --git a/Makefile.target b/Makefile.target > index f64702b..dcf0193 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -192,7 +192,7 @@ obj-y += e1000.o > obj-i386-y += vga.o > obj-i386-y += mc146818rtc.o i8259.o pc.o > obj-i386-y += cirrus_vga.o apic.o ioapic.o piix_pci.o > -obj-i386-y += vmmouse.o vmport.o hpet.o > +obj-i386-y += vmmouse.o vmport.o hpet.o applesmc.o > obj-i386-y += device-hotplug.o pci-hotplug.o smbios.o wdt_ib700.o > obj-i386-y += debugcon.o multiboot.o > obj-i386-y += pc_piix.o > diff --git a/hw/applesmc.c b/hw/applesmc.c > new file mode 100644 > index 0000000..572b8f7 > --- /dev/null > +++ b/hw/applesmc.c > @@ -0,0 +1,225 @@ > +/* > + * Apple SMC controller > + * > + * Copyright (c) 2007 Alexander Graf > + * > + * Authors: Alexander Graf <ag...@suse.de> > + * Susanne Graf <s...@csgraf.de> > + * > + * This library is free software; you can redistribute it and/or > + * modify it under the terms of the GNU Lesser General Public > + * License as published by the Free Software Foundation; either > + * version 2 of the License, or (at your option) any later version. > + * > + * This library is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + * Lesser General Public License for more details. > + * > + * You should have received a copy of the GNU Lesser General Public > + * License along with this library; if not, write to the Free Software > + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Please use the modern version with 'if not, see <http://www.gnu.org/licenses/>.' > + * > + * ***************************************************************** > + * > + * In all Intel-based Apple hardware there is an SMC chip to control the > + * backlight, fans and several other generic device parameters. It also > + * contains the magic keys used to dongle Mac OS X to the device. > + * > + * This driver was mostly created by looking at the Linux AppleSMC driver > + * implementation and does not support IRQ. > + * > + */ > + > +#include "hw.h" > +#include "isa.h" > +#include "console.h" > +#include "qemu-timer.h" > + > +#define DEBUG_SMC > + > +#define APPLESMC_DEFAULT_IOBASE 0x300 > +/* data port used by Apple SMC */ > +#define APPLESMC_DATA_PORT 0x0 > +/* command/status port used by Apple SMC */ > +#define APPLESMC_CMD_PORT 0x4 > +#define APPLESMC_NR_PORTS 32 > +#define APPLESMC_MAX_DATA_LENGTH 32 > + > +#define APPLESMC_READ_CMD 0x10 > +#define APPLESMC_WRITE_CMD 0x11 > +#define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 > +#define APPLESMC_GET_KEY_TYPE_CMD 0x13 > + > +#ifdef DEBUG_SMC > +#define smc_debug(...) printf(__VA_ARGS__) How about: #define smc_debug(fmt, ...) printf("APPLESMC: " fmt, ## __VA_ARGS__) > +#else > +#define smc_debug(...) do { } while(0) > +#endif > + > +static char default_osk[64] = "This is a dummy key. Enter the real key " > + "using the -osk parameter"; > + > +struct AppleSMCData { > + uint8_t len; > + const char *key; > + const char *data; > + QLIST_ENTRY(AppleSMCData) node; > +}; > + > +struct AppleSMCStatus { > + ISADevice dev; > + uint32_t iobase; > + uint8_t cmd; > + uint8_t status; > + uint8_t key[4]; > + uint8_t read_pos; > + uint8_t data_len; > + uint8_t data_pos; > + uint8_t data[255]; > + uint8_t charactic[4]; > + char *osk; > + QLIST_HEAD(, AppleSMCData) data_def; > +}; > + > +static void applesmc_io_cmd_writeb(void *opaque, uint32_t addr, uint32_t val) > +{ > + struct AppleSMCStatus *s = (struct AppleSMCStatus *)opaque; Useless cast in C, also in other places. > + smc_debug("APPLESMC: CMD Write B: %#x = %#x\n", addr, val); > + switch(val) { > + case APPLESMC_READ_CMD: > + s->status = 0x0c; > + break; > + } > + s->cmd = val; > + s->read_pos = 0; > + s->data_pos = 0; > +} > + > +static void applesmc_fill_data(struct AppleSMCStatus *s) > +{ > + struct AppleSMCData *d; > + > + QLIST_FOREACH(d, &s->data_def, node) { > + uint32_t key_data = *((uint32_t*)d->key); > + uint32_t key_current = *((uint32_t*)s->key); > + if(key_data == key_current) { I'd use memcmp(). There's no space between 'if' and '('. > + smc_debug("APPLESMC: Key matched (%s Len=%d Data=%s)\n", d->key, > + d->len, d->data); > + memcpy(s->data, d->data, d->len); > + return; > + } > + } > +} > + > +static void applesmc_io_data_writeb(void *opaque, uint32_t addr, uint32_t > val) > +{ > + struct AppleSMCStatus *s = (struct AppleSMCStatus *)opaque; > + smc_debug("APPLESMC: DATA Write B: %#x = %#x\n", addr, val); > + switch(s->cmd) { > + case APPLESMC_READ_CMD: > + if(s->read_pos < 4) { > + s->key[s->read_pos] = val; > + s->status = 0x04; > + } else if(s->read_pos == 4) { > + s->data_len = val; > + s->status = 0x05; > + s->data_pos = 0; > + smc_debug("APPLESMC: Key = %c%c%c%c Len = %d\n", s->key[0], > + s->key[1], s->key[2], s->key[3], val); > + applesmc_fill_data(s); > + } > + s->read_pos++; > + break; > + } > +} > + > +static uint32_t applesmc_io_data_readb(void *opaque, uint32_t addr1) > +{ > + struct AppleSMCStatus *s = (struct AppleSMCStatus *)opaque; > + uint8_t retval = 0; > + switch(s->cmd) { > + case APPLESMC_READ_CMD: > + if(s->data_pos < s->data_len) { > + retval = s->data[s->data_pos]; > + smc_debug("APPLESMC: READ_DATA[%d] = %#hhx\n", s->data_pos, > + retval); > + s->data_pos++; > + if(s->data_pos == s->data_len) { > + s->status = 0x00; > + smc_debug("APPLESMC: EOF\n"); > + } else > + s->status = 0x05; > + } > + } > + smc_debug("APPLESMC: DATA Read b: %#x = %#x\n", addr1, retval); > + return retval; > +} > + > +static uint32_t applesmc_io_cmd_readb(void *opaque, uint32_t addr1) > +{ > + smc_debug("APPLESMC: CMD Read B: %#x\n", addr1); > + return ((struct AppleSMCStatus*)opaque)->status; I'd add a variable to avoid the cast. > +} > + > +static void applesmc_add_key(struct AppleSMCStatus *s, const char *key, > + int len, const char *data) > +{ > + struct AppleSMCData *def; > + > + def = qemu_mallocz(sizeof(struct AppleSMCData)); > + def->key = key; > + def->len = len; > + def->data = data; > + > + QLIST_INSERT_HEAD(&s->data_def, def, node); > +} > + > +static int applesmc_isa_init(ISADevice *dev) > +{ > + struct AppleSMCStatus *s = DO_UPCAST(struct AppleSMCStatus, dev, dev); > + > + register_ioport_read(s->iobase + APPLESMC_DATA_PORT, 4, 1, > + applesmc_io_data_readb, s); > + register_ioport_read(s->iobase + APPLESMC_CMD_PORT, 4, 1, > + applesmc_io_cmd_readb, s); > + register_ioport_write(s->iobase + APPLESMC_DATA_PORT, 4, 1, > + applesmc_io_data_writeb, s); > + register_ioport_write(s->iobase + APPLESMC_CMD_PORT, 4, 1, > + applesmc_io_cmd_writeb, s); > + > + QLIST_INIT(&s->data_def); > + > + if (!s->osk || (strlen(s->osk) != 64)) { > + fprintf(stderr, "WARNING: Using AppleSMC with invalid key\n"); > + s->osk = default_osk; > + } > + > + applesmc_add_key(s, "REV ", 6, "\0x01\0x13\0x0f\0x00\0x00\0x03"); > + applesmc_add_key(s, "OSK0", 32, s->osk); > + applesmc_add_key(s, "OSK1", 32, s->osk + 32); > + applesmc_add_key(s, "NATJ", 1, "\0"); > + applesmc_add_key(s, "MSSP", 1, "\0"); > + applesmc_add_key(s, "MSSD", 1, "\0x3"); Please add a reset function which sets these, possibly freeing the old keys. That is, if it is the correct action in reset. > + > + return 0; > +} > + > +static ISADeviceInfo applesmc_isa_info = { > + .qdev.name = "isa-applesmc", > + .qdev.size = sizeof(struct AppleSMCStatus), > + .init = applesmc_isa_init, > + .qdev.props = (Property[]) { > + DEFINE_PROP_HEX32("iobase", struct AppleSMCStatus, iobase, > + APPLESMC_DEFAULT_IOBASE), > + DEFINE_PROP_STRING("osk", struct AppleSMCStatus, osk), > + DEFINE_PROP_END_OF_LIST(), > + }, > +}; > + > +static void applesmc_register_devices(void) > +{ > + isa_qdev_register(&applesmc_isa_info); > +} > + > +device_init(applesmc_register_devices) > -- > 1.6.0.2 > > >
