2  * QEMU SMBus EEPROM device
31 #include "hw/qdev-properties.h"
38 #define TYPE_SMBUS_EEPROM "smbus-eeprom"
46     uint8_t data[SMBUS_EEPROM_SIZE];  member
54     SMBusEEPROMDevice *eeprom = SMBUS_EEPROM(dev);  in eeprom_receive_byte()  local
55     uint8_t *data = eeprom->data;  in eeprom_receive_byte()  local
56     uint8_t val = data[eeprom->offset++];  in eeprom_receive_byte()
58     eeprom->accessed = true;  in eeprom_receive_byte()
61            dev->i2c.address, val);  in eeprom_receive_byte()
68     SMBusEEPROMDevice *eeprom = SMBUS_EEPROM(dev);  in eeprom_write_data()  local
69     uint8_t *data = eeprom->data;  in eeprom_write_data()  local
71     eeprom->accessed = true;  in eeprom_write_data()
74            dev->i2c.address, buf[0], buf[1]);  in eeprom_write_data()
77     eeprom->offset = buf[0];  in eeprom_write_data()
79     len--;  in eeprom_write_data()
81     for (; len > 0; len--) {  in eeprom_write_data()
82         data[eeprom->offset] = *buf++;  in eeprom_write_data()
83         eeprom->offset = (eeprom->offset + 1) % SMBUS_EEPROM_SIZE;  in eeprom_write_data()
92     SMBusEEPROMDevice *eeprom = opaque;  in smbus_eeprom_vmstate_needed()  local
94     return (eeprom->accessed || smbus_vmstate_needed(&eeprom->smbusdev)) &&  in smbus_eeprom_vmstate_needed()
95         !mc->smbus_no_migration_support;  in smbus_eeprom_vmstate_needed()
99     .name = "smbus-eeprom",
105         VMSTATE_UINT8_ARRAY(data, SMBusEEPROMDevice, SMBUS_EEPROM_SIZE),
113  * Reset the EEPROM contents to the initial state on a reset.  This
114  * isn't really how an EEPROM works, of course, but the general
124     SMBusEEPROMDevice *eeprom = SMBUS_EEPROM(dev);  in smbus_eeprom_reset()  local
126     memcpy(eeprom->data, eeprom->init_data, SMBUS_EEPROM_SIZE);  in smbus_eeprom_reset()
127     eeprom->offset = 0;  in smbus_eeprom_reset()
132     SMBusEEPROMDevice *eeprom = SMBUS_EEPROM(dev);  in smbus_eeprom_realize()  local
135     if (eeprom->init_data == NULL) {  in smbus_eeprom_realize()
140 static void smbus_eeprom_class_initfn(ObjectClass *klass, void *data)  in smbus_eeprom_class_initfn()  argument
145     dc->realize = smbus_eeprom_realize;  in smbus_eeprom_class_initfn()
147     sc->receive_byte = eeprom_receive_byte;  in smbus_eeprom_class_initfn()
148     sc->write_data = eeprom_write_data;  in smbus_eeprom_class_initfn()
149     dc->vmsd = &vmstate_smbus_eeprom;  in smbus_eeprom_class_initfn()
151     dc->user_creatable = false;  in smbus_eeprom_class_initfn()
172     SMBUS_EEPROM(dev)->init_data = eeprom_buf;  in DEFINE_TYPES()
194 /* Generate SDRAM SPD EEPROM data describing a module of type and size */
221     sz_log2 = 31 - clz32(size);  in spd_data_generate()
228         sz_log2--;  in spd_data_generate()
236         sz_log2--;  in spd_data_generate()
240     density = 1ULL << (sz_log2 - 2);  in spd_data_generate()
255     spd[0] = 128;   /* data bytes in EEPROM */  in spd_data_generate()
256     spd[1] = 8;     /* log2 size of EEPROM */  in spd_data_generate()
260     spd[5] = (type == DDR2 ? nbanks - 1 : nbanks);  in spd_data_generate()
261     spd[6] = 64;    /* module data width */  in spd_data_generate()
262                     /* reserved / data width high */  in spd_data_generate()
266                     /* DIMM configuration 0 = non-ECC */  in spd_data_generate()
279                     /* data access time */  in spd_data_generate()
281                     /* data access time */  in spd_data_generate()
289     spd[34] = 20;   /* data input setup time */  in spd_data_generate()
290     spd[35] = 8;    /* data input hold time */  in spd_data_generate()