]> Git Repo - qemu.git/blob - hw/fw_cfg.h
Key/value based qemu<->guest firmware communication mechanism (Gleb Natapov)
[qemu.git] / hw / fw_cfg.h
1 #ifndef FW_CFG_H
2 #define FW_CFG_H
3
4 #define FW_CFG_SIGNATURE        0x00
5 #define FW_CFG_ID               0x01
6 #define FW_CFG_MAX_ENTRY        0x10
7
8 #define FW_CFG_WRITE_CHANNEL    0x4000
9 #define FW_CFG_ARCH_LOCAL       0x8000
10 #define FW_CFG_ENTRY_MASK       ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)
11
12 #define FW_CFG_INVALID          0xffff
13
14 #ifndef NO_QEMU_PROTOS
15 typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
16
17 int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint16_t len);
18 int fw_cfg_add_i16(void *opaque, uint16_t key, uint16_t value);
19 int fw_cfg_add_i32(void *opaque, uint16_t key, uint32_t value);
20 int fw_cfg_add_i64(void *opaque, uint16_t key, uint64_t value);
21 int fw_cfg_add_callback(void *opaque, uint16_t key, FWCfgCallback callback,
22                         void *callback_opaque, uint8_t *data, size_t len);
23 void *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
24                 target_phys_addr_t crl_addr, target_phys_addr_t data_addr);
25
26 #endif /* NO_QEMU_PROTOS */
27
28 #endif
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