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-rw-r--r--hw/misc/applesmc.c251
1 files changed, 251 insertions, 0 deletions
diff --git a/hw/misc/applesmc.c b/hw/misc/applesmc.c
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+/*
+ * Apple SMC controller
+ *
+ * Copyright (c) 2007 Alexander Graf
+ *
+ * Authors: Alexander Graf <agraf@suse.de>
+ * Susanne Graf <suse@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, 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/hw.h"
+#include "hw/isa/isa.h"
+#include "ui/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(...) fprintf(stderr, "AppleSMC: " __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 = opaque;
+
+ smc_debug("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) {
+ if (!memcmp(d->key, s->key, 4)) {
+ smc_debug("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 = opaque;
+
+ smc_debug("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("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 = 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("READ_DATA[%d] = %#hhx\n", s->data_pos,
+ retval);
+ s->data_pos++;
+ if(s->data_pos == s->data_len) {
+ s->status = 0x00;
+ smc_debug("EOF\n");
+ } else
+ s->status = 0x05;
+ }
+ }
+ smc_debug("DATA Read b: %#x = %#x\n", addr1, retval);
+
+ return retval;
+}
+
+static uint32_t applesmc_io_cmd_readb(void *opaque, uint32_t addr1)
+{
+ struct AppleSMCStatus *s = opaque;
+
+ smc_debug("CMD Read B: %#x\n", addr1);
+ return s->status;
+}
+
+static void applesmc_add_key(struct AppleSMCStatus *s, const char *key,
+ int len, const char *data)
+{
+ struct AppleSMCData *def;
+
+ def = g_malloc0(sizeof(struct AppleSMCData));
+ def->key = key;
+ def->len = len;
+ def->data = data;
+
+ QLIST_INSERT_HEAD(&s->data_def, def, node);
+}
+
+static void qdev_applesmc_isa_reset(DeviceState *dev)
+{
+ struct AppleSMCStatus *s = DO_UPCAST(struct AppleSMCStatus, dev.qdev, dev);
+ struct AppleSMCData *d, *next;
+
+ /* Remove existing entries */
+ QLIST_FOREACH_SAFE(d, &s->data_def, node, next) {
+ QLIST_REMOVE(d, node);
+ }
+
+ applesmc_add_key(s, "REV ", 6, "\x01\x13\x0f\x00\x00\x03");
+ 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");
+}
+
+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);
+
+ if (!s->osk || (strlen(s->osk) != 64)) {
+ fprintf(stderr, "WARNING: Using AppleSMC with invalid key\n");
+ s->osk = default_osk;
+ }
+
+ QLIST_INIT(&s->data_def);
+ qdev_applesmc_isa_reset(&dev->qdev);
+
+ return 0;
+}
+
+static Property applesmc_isa_properties[] = {
+ DEFINE_PROP_HEX32("iobase", struct AppleSMCStatus, iobase,
+ APPLESMC_DEFAULT_IOBASE),
+ DEFINE_PROP_STRING("osk", struct AppleSMCStatus, osk),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void qdev_applesmc_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
+ ic->init = applesmc_isa_init;
+ dc->reset = qdev_applesmc_isa_reset;
+ dc->props = applesmc_isa_properties;
+}
+
+static const TypeInfo applesmc_isa_info = {
+ .name = "isa-applesmc",
+ .parent = TYPE_ISA_DEVICE,
+ .instance_size = sizeof(struct AppleSMCStatus),
+ .class_init = qdev_applesmc_class_init,
+};
+
+static void applesmc_register_types(void)
+{
+ type_register_static(&applesmc_isa_info);
+}
+
+type_init(applesmc_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-28 14:01:05 +0000