* [Qemu-devel] [PULL 1/3] applesmc: cosmetic whitespace and indentation cleanup
2017-06-23 12:48 [Qemu-devel] [PULL 0/3] Queue/misc patches Gerd Hoffmann
@ 2017-06-23 12:48 ` Gerd Hoffmann
2017-06-23 12:48 ` [Qemu-devel] [PULL 2/3] applesmc: implement error status port Gerd Hoffmann
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2017-06-23 12:48 UTC (permalink / raw)
To: qemu-devel; +Cc: Gabriel L. Somlo, Gerd Hoffmann
From: "Gabriel L. Somlo" <gsomlo@gmail.com>
Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Message-id: 1497639316-22202-2-git-send-email-gsomlo@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/misc/applesmc.c | 98 ++++++++++++++++++++++++++++--------------------------
1 file changed, 50 insertions(+), 48 deletions(-)
diff --git a/hw/misc/applesmc.c b/hw/misc/applesmc.c
index 77fab5b9d2..6381197728 100644
--- a/hw/misc/applesmc.c
+++ b/hw/misc/applesmc.c
@@ -39,21 +39,24 @@
/* #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_READ_CMD 0x10
-#define APPLESMC_WRITE_CMD 0x11
-#define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12
-#define APPLESMC_GET_KEY_TYPE_CMD 0x13
+enum {
+ APPLESMC_DATA_PORT = 0x00,
+ APPLESMC_CMD_PORT = 0x04,
+ APPLESMC_NUM_PORTS = 0x20,
+};
+
+enum {
+ APPLESMC_READ_CMD = 0x10,
+ APPLESMC_WRITE_CMD = 0x11,
+ APPLESMC_GET_KEY_BY_INDEX_CMD = 0x12,
+ APPLESMC_GET_KEY_TYPE_CMD = 0x13,
+};
#ifdef DEBUG_SMC
#define smc_debug(...) fprintf(stderr, "AppleSMC: " __VA_ARGS__)
#else
-#define smc_debug(...) do { } while(0)
+#define smc_debug(...) do { } while (0)
#endif
static char default_osk[64] = "This is a dummy key. Enter the real key "
@@ -77,12 +80,11 @@ struct AppleSMCState {
uint32_t iobase;
uint8_t cmd;
uint8_t status;
- uint8_t key[4];
+ char 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;
};
@@ -93,10 +95,10 @@ static void applesmc_io_cmd_write(void *opaque, hwaddr addr, uint64_t val,
AppleSMCState *s = opaque;
smc_debug("CMD Write B: %#x = %#x\n", addr, val);
- switch(val) {
- case APPLESMC_READ_CMD:
- s->status = 0x0c;
- break;
+ switch (val) {
+ case APPLESMC_READ_CMD:
+ s->status = 0x0c;
+ break;
}
s->cmd = val;
s->read_pos = 0;
@@ -123,54 +125,54 @@ static void applesmc_io_data_write(void *opaque, hwaddr addr, uint64_t val,
AppleSMCState *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;
+ 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 uint64_t applesmc_io_data_read(void *opaque, hwaddr addr1,
- unsigned size)
+static uint64_t applesmc_io_data_read(void *opaque, hwaddr addr, unsigned size)
{
AppleSMCState *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;
+ 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);
+ smc_debug("DATA Read b: %#x = %#x\n", addr, retval);
return retval;
}
-static uint64_t applesmc_io_cmd_read(void *opaque, hwaddr addr1, unsigned size)
+static uint64_t applesmc_io_cmd_read(void *opaque, hwaddr addr, unsigned size)
{
AppleSMCState *s = opaque;
- smc_debug("CMD Read B: %#x\n", addr1);
+ smc_debug("CMD Read B: %#x\n", addr);
return s->status;
}
--
2.9.3
^ permalink raw reply related [flat|nested] 5+ messages in thread* [Qemu-devel] [PULL 2/3] applesmc: implement error status port
2017-06-23 12:48 [Qemu-devel] [PULL 0/3] Queue/misc patches Gerd Hoffmann
2017-06-23 12:48 ` [Qemu-devel] [PULL 1/3] applesmc: cosmetic whitespace and indentation cleanup Gerd Hoffmann
@ 2017-06-23 12:48 ` Gerd Hoffmann
2017-06-23 12:48 ` [Qemu-devel] [PULL 3/3] applesmc: fix port i/o access width Gerd Hoffmann
2017-06-23 15:17 ` [Qemu-devel] [PULL 0/3] Queue/misc patches Peter Maydell
3 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2017-06-23 12:48 UTC (permalink / raw)
To: qemu-devel; +Cc: Gabriel L. Somlo, Gerd Hoffmann
From: "Gabriel L. Somlo" <gsomlo@gmail.com>
As of release 10.12.4, OS X (Sierra) refuses to boot unless the
AppleSMC supports an additional I/O port, expected to provide an
error status code.
Update the [cmd|data]_write() and data_read() methods to implement
the required state machine, and add I/O region & methods to handle
access to the error port.
Originally proposed by Eric Shelton <eshelton@pobox.com> based in
part on FakeSMC (git://git.assembla.com/fakesmc.git).
Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1497639316-22202-3-git-send-email-gsomlo@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/misc/applesmc.c | 141 +++++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 115 insertions(+), 26 deletions(-)
diff --git a/hw/misc/applesmc.c b/hw/misc/applesmc.c
index 6381197728..0d882e8f42 100644
--- a/hw/misc/applesmc.c
+++ b/hw/misc/applesmc.c
@@ -43,6 +43,7 @@
enum {
APPLESMC_DATA_PORT = 0x00,
APPLESMC_CMD_PORT = 0x04,
+ APPLESMC_ERR_PORT = 0x1e,
APPLESMC_NUM_PORTS = 0x20,
};
@@ -53,6 +54,24 @@ enum {
APPLESMC_GET_KEY_TYPE_CMD = 0x13,
};
+enum {
+ APPLESMC_ST_CMD_DONE = 0x00,
+ APPLESMC_ST_DATA_READY = 0x01,
+ APPLESMC_ST_BUSY = 0x02,
+ APPLESMC_ST_ACK = 0x04,
+ APPLESMC_ST_NEW_CMD = 0x08,
+};
+
+enum {
+ APPLESMC_ST_1E_CMD_INTRUPTED = 0x80,
+ APPLESMC_ST_1E_STILL_BAD_CMD = 0x81,
+ APPLESMC_ST_1E_BAD_CMD = 0x82,
+ APPLESMC_ST_1E_NOEXIST = 0x84,
+ APPLESMC_ST_1E_WRITEONLY = 0x85,
+ APPLESMC_ST_1E_READONLY = 0x86,
+ APPLESMC_ST_1E_BAD_INDEX = 0xb8,
+};
+
#ifdef DEBUG_SMC
#define smc_debug(...) fprintf(stderr, "AppleSMC: " __VA_ARGS__)
#else
@@ -77,9 +96,12 @@ struct AppleSMCState {
MemoryRegion io_data;
MemoryRegion io_cmd;
+ MemoryRegion io_err;
uint32_t iobase;
uint8_t cmd;
uint8_t status;
+ uint8_t status_1e;
+ uint8_t last_ret;
char key[4];
uint8_t read_pos;
uint8_t data_len;
@@ -93,89 +115,138 @@ static void applesmc_io_cmd_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
AppleSMCState *s = opaque;
+ uint8_t status = s->status & 0x0f;
- smc_debug("CMD Write B: %#x = %#x\n", addr, val);
+ smc_debug("CMD received: 0x%02x\n", (uint8_t)val);
switch (val) {
case APPLESMC_READ_CMD:
- s->status = 0x0c;
+ /* did last command run through OK? */
+ if (status == APPLESMC_ST_CMD_DONE || status == APPLESMC_ST_NEW_CMD) {
+ s->cmd = val;
+ s->status = APPLESMC_ST_NEW_CMD | APPLESMC_ST_ACK;
+ } else {
+ smc_debug("ERROR: previous command interrupted!\n");
+ s->status = APPLESMC_ST_NEW_CMD;
+ s->status_1e = APPLESMC_ST_1E_CMD_INTRUPTED;
+ }
break;
+ default:
+ smc_debug("UNEXPECTED CMD 0x%02x\n", (uint8_t)val);
+ s->status = APPLESMC_ST_NEW_CMD;
+ s->status_1e = APPLESMC_ST_1E_BAD_CMD;
}
- s->cmd = val;
s->read_pos = 0;
s->data_pos = 0;
}
-static void applesmc_fill_data(AppleSMCState *s)
+static struct AppleSMCData *applesmc_find_key(AppleSMCState *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;
+ return d;
}
}
+ return NULL;
}
static void applesmc_io_data_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
AppleSMCState *s = opaque;
+ struct AppleSMCData *d;
- smc_debug("DATA Write B: %#x = %#x\n", addr, val);
+ smc_debug("DATA received: 0x%02x\n", (uint8_t)val);
switch (s->cmd) {
case APPLESMC_READ_CMD:
+ if ((s->status & 0x0f) == APPLESMC_ST_CMD_DONE) {
+ break;
+ }
if (s->read_pos < 4) {
s->key[s->read_pos] = val;
- s->status = 0x04;
+ s->status = APPLESMC_ST_ACK;
} 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);
+ d = applesmc_find_key(s);
+ if (d != NULL) {
+ memcpy(s->data, d->data, d->len);
+ s->data_len = d->len;
+ s->data_pos = 0;
+ s->status = APPLESMC_ST_ACK | APPLESMC_ST_DATA_READY;
+ s->status_1e = APPLESMC_ST_CMD_DONE; /* clear on valid key */
+ } else {
+ smc_debug("READ_CMD: key '%c%c%c%c' not found!\n",
+ s->key[0], s->key[1], s->key[2], s->key[3]);
+ s->status = APPLESMC_ST_CMD_DONE;
+ s->status_1e = APPLESMC_ST_1E_NOEXIST;
+ }
}
s->read_pos++;
break;
+ default:
+ s->status = APPLESMC_ST_CMD_DONE;
+ s->status_1e = APPLESMC_ST_1E_STILL_BAD_CMD;
}
}
+static void applesmc_io_err_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
+{
+ smc_debug("ERR_CODE received: 0x%02x, ignoring!\n", (uint8_t)val);
+ /* NOTE: writing to the error port not supported! */
+}
+
static uint64_t applesmc_io_data_read(void *opaque, hwaddr addr, unsigned size)
{
AppleSMCState *s = opaque;
- uint8_t retval = 0;
switch (s->cmd) {
case APPLESMC_READ_CMD:
+ if (!(s->status & APPLESMC_ST_DATA_READY)) {
+ break;
+ }
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->last_ret = s->data[s->data_pos];
+ smc_debug("READ '%c%c%c%c'[%d] = %02x\n",
+ s->key[0], s->key[1], s->key[2], s->key[3],
+ s->data_pos, s->last_ret);
s->data_pos++;
if (s->data_pos == s->data_len) {
- s->status = 0x00;
- smc_debug("EOF\n");
+ s->status = APPLESMC_ST_CMD_DONE;
+ smc_debug("READ '%c%c%c%c' Len=%d complete!\n",
+ s->key[0], s->key[1], s->key[2], s->key[3],
+ s->data_len);
} else {
- s->status = 0x05;
+ s->status = APPLESMC_ST_ACK | APPLESMC_ST_DATA_READY;
}
}
+ break;
+ default:
+ s->status = APPLESMC_ST_CMD_DONE;
+ s->status_1e = APPLESMC_ST_1E_STILL_BAD_CMD;
}
- smc_debug("DATA Read b: %#x = %#x\n", addr, retval);
+ smc_debug("DATA sent: 0x%02x\n", s->last_ret);
- return retval;
+ return s->last_ret;
}
static uint64_t applesmc_io_cmd_read(void *opaque, hwaddr addr, unsigned size)
{
AppleSMCState *s = opaque;
- smc_debug("CMD Read B: %#x\n", addr);
+ smc_debug("CMD sent: 0x%02x\n", s->status);
return s->status;
}
+static uint64_t applesmc_io_err_read(void *opaque, hwaddr addr, unsigned size)
+{
+ AppleSMCState *s = opaque;
+
+ /* NOTE: read does not clear the 1e status */
+ smc_debug("ERR_CODE sent: 0x%02x\n", s->status_1e);
+ return s->status_1e;
+}
+
static void applesmc_add_key(AppleSMCState *s, const char *key,
int len, const char *data)
{
@@ -198,6 +269,9 @@ static void qdev_applesmc_isa_reset(DeviceState *dev)
QLIST_FOREACH_SAFE(d, &s->data_def, node, next) {
QLIST_REMOVE(d, node);
}
+ s->status = 0x00;
+ s->status_1e = 0x00;
+ s->last_ret = 0x00;
applesmc_add_key(s, "REV ", 6, "\x01\x13\x0f\x00\x00\x03");
applesmc_add_key(s, "OSK0", 32, s->osk);
@@ -227,6 +301,16 @@ static const MemoryRegionOps applesmc_cmd_io_ops = {
},
};
+static const MemoryRegionOps applesmc_err_io_ops = {
+ .write = applesmc_io_err_write,
+ .read = applesmc_io_err_read,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
static void applesmc_isa_realize(DeviceState *dev, Error **errp)
{
AppleSMCState *s = APPLE_SMC(dev);
@@ -241,6 +325,11 @@ static void applesmc_isa_realize(DeviceState *dev, Error **errp)
isa_register_ioport(&s->parent_obj, &s->io_cmd,
s->iobase + APPLESMC_CMD_PORT);
+ memory_region_init_io(&s->io_err, OBJECT(s), &applesmc_err_io_ops, s,
+ "applesmc-err", 1);
+ isa_register_ioport(&s->parent_obj, &s->io_err,
+ s->iobase + APPLESMC_ERR_PORT);
+
if (!s->osk || (strlen(s->osk) != 64)) {
fprintf(stderr, "WARNING: Using AppleSMC with invalid key\n");
s->osk = default_osk;
--
2.9.3
^ permalink raw reply related [flat|nested] 5+ messages in thread