* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* Emulation for serial EEPROMs:
* - No emulation of EEPROM timings.
*/
-#include <assert.h>
#include "hw.h"
#include "eeprom93xx.h"
//~ #define DEBUG_EEPROM
#ifdef DEBUG_EEPROM
-#define logout(fmt, args...) fprintf(stderr, "EEPROM\t%-24s" fmt, __func__, ##args)
+#define logout(fmt, ...) fprintf(stderr, "EEPROM\t%-24s" fmt, __func__, ## __VA_ARGS__)
#else
-#define logout(fmt, args...) ((void)0)
+#define logout(fmt, ...) ((void)0)
#endif
-static int eeprom_instance = 0;
-static const int eeprom_version = 20061112;
+#define EEPROM_INSTANCE 0
+#define OLD_EEPROM_VERSION 20061112
+#define EEPROM_VERSION (OLD_EEPROM_VERSION + 1)
#if 0
typedef enum {
uint8_t tick;
uint8_t address;
uint8_t command;
- uint8_t writeable;
+ uint8_t writable;
uint8_t eecs;
uint8_t eesk;
uint8_t eedo;
uint8_t addrbits;
- uint8_t size;
+ uint16_t size;
uint16_t data;
uint16_t contents[0];
};
/* Code for saving and restoring of EEPROM state. */
-static void eeprom_save(QEMUFile *f, void *opaque)
+/* Restore an uint16_t from an uint8_t
+ This is a Big hack, but it is how the old state did it.
+ */
+
+static int get_uint16_from_uint8(QEMUFile *f, void *pv, size_t size)
{
- /* Save EEPROM data. */
- unsigned address;
- eeprom_t *eeprom = (eeprom_t *)opaque;
- qemu_put_buffer(f, (uint8_t *)eeprom, sizeof(*eeprom) - 2);
- qemu_put_be16(f, eeprom->data);
- for (address = 0; address < eeprom->size; address++) {
- qemu_put_be16(f, eeprom->contents[address]);
- }
+ uint16_t *v = pv;
+ *v = qemu_get_ubyte(f);
+ return 0;
}
-static int eeprom_load(QEMUFile *f, void *opaque, int version_id)
+static void put_unused(QEMUFile *f, void *pv, size_t size)
{
- /* Load EEPROM data from saved data if version and EEPROM size
- of data and current EEPROM are identical. */
- eeprom_t *eeprom = (eeprom_t *)opaque;
- int result = -EINVAL;
- if (version_id == eeprom_version) {
- unsigned address;
- uint8_t size = eeprom->size;
- qemu_get_buffer(f, (uint8_t *)eeprom, sizeof(*eeprom) - 2);
- if (eeprom->size == size) {
- eeprom->data = qemu_get_be16(f);
- for (address = 0; address < eeprom->size; address++) {
- eeprom->contents[address] = qemu_get_be16(f);
- }
- result = 0;
- }
- }
- return result;
+ fprintf(stderr, "uint16_from_uint8 is used only for backwards compatibility.\n");
+ fprintf(stderr, "Never should be used to write a new state.\n");
+ exit(0);
}
+static const VMStateInfo vmstate_hack_uint16_from_uint8 = {
+ .name = "uint16_from_uint8",
+ .get = get_uint16_from_uint8,
+ .put = put_unused,
+};
+
+#define VMSTATE_UINT16_HACK_TEST(_f, _s, _t) \
+ VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint16_from_uint8, uint16_t)
+
+static bool is_old_eeprom_version(void *opaque, int version_id)
+{
+ return version_id == OLD_EEPROM_VERSION;
+}
+
+static const VMStateDescription vmstate_eeprom = {
+ .name = "eeprom",
+ .version_id = EEPROM_VERSION,
+ .minimum_version_id = OLD_EEPROM_VERSION,
+ .minimum_version_id_old = OLD_EEPROM_VERSION,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT8(tick, eeprom_t),
+ VMSTATE_UINT8(address, eeprom_t),
+ VMSTATE_UINT8(command, eeprom_t),
+ VMSTATE_UINT8(writable, eeprom_t),
+
+ VMSTATE_UINT8(eecs, eeprom_t),
+ VMSTATE_UINT8(eesk, eeprom_t),
+ VMSTATE_UINT8(eedo, eeprom_t),
+
+ VMSTATE_UINT8(addrbits, eeprom_t),
+ VMSTATE_UINT16_HACK_TEST(size, eeprom_t, is_old_eeprom_version),
+ VMSTATE_UNUSED_TEST(is_old_eeprom_version, 1),
+ VMSTATE_UINT16_EQUAL_V(size, eeprom_t, EEPROM_VERSION),
+ VMSTATE_UINT16(data, eeprom_t),
+ VMSTATE_VARRAY_UINT16_UNSAFE(contents, eeprom_t, size, 0,
+ vmstate_info_uint16, uint16_t),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
void eeprom93xx_write(eeprom_t *eeprom, int eecs, int eesk, int eedi)
{
uint8_t tick = eeprom->tick;
address = 0x0;
} else if (eeprom->eecs && ! eecs) {
/* End chip select cycle. This triggers write / erase. */
- if (eeprom->writeable) {
+ if (eeprom->writable) {
uint8_t subcommand = address >> (eeprom->addrbits - 2);
if (command == 0 && subcommand == 2) {
/* Erase all. */
switch (address >> (eeprom->addrbits - 2)) {
case 0:
logout("write disable command\n");
- eeprom->writeable = 0;
+ eeprom->writable = 0;
break;
case 1:
logout("write all command\n");
break;
case 3:
logout("write enable command\n");
- eeprom->writeable = 1;
+ eeprom->writable = 1;
break;
}
} else {
}
#endif
-eeprom_t *eeprom93xx_new(uint16_t nwords)
+eeprom_t *eeprom93xx_new(DeviceState *dev, uint16_t nwords)
{
/* Add a new EEPROM (with 16, 64 or 256 words). */
eeprom_t *eeprom;
/* Output DO is tristate, read results in 1. */
eeprom->eedo = 1;
logout("eeprom = 0x%p, nwords = %u\n", eeprom, nwords);
- register_savevm("eeprom", eeprom_instance, eeprom_version,
- eeprom_save, eeprom_load, eeprom);
+ vmstate_register(dev, 0, &vmstate_eeprom, eeprom);
return eeprom;
}
-void eeprom93xx_free(eeprom_t *eeprom)
+void eeprom93xx_free(DeviceState *dev, eeprom_t *eeprom)
{
/* Destroy EEPROM. */
logout("eeprom = 0x%p\n", eeprom);
+ vmstate_unregister(dev, &vmstate_eeprom, eeprom);
qemu_free(eeprom);
}
projects / qemu.git / blobdiff