Key/value based qemu<->guest firmware communication mechanism (Gleb Natapov)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5256 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 28 insertions, 0 deletions

diff --git a/hw/fw_cfg.h b/hw/fw_cfg.h
new file mode 100644
index 0000000000..b949c702b8
--- /dev/null
+++ b/hw/fw_cfg.h
@@ -0,0 +1,28 @@
+#ifndef FW_CFG_H
+#define FW_CFG_H
+
+#define FW_CFG_SIGNATURE        0x00
+#define FW_CFG_ID               0x01
+#define FW_CFG_MAX_ENTRY        0x10
+
+#define FW_CFG_WRITE_CHANNEL    0x4000
+#define FW_CFG_ARCH_LOCAL       0x8000
+#define FW_CFG_ENTRY_MASK       ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)
+
+#define FW_CFG_INVALID          0xffff
+
+#ifndef NO_QEMU_PROTOS
+typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
+
+int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint16_t len);
+int fw_cfg_add_i16(void *opaque, uint16_t key, uint16_t value);
+int fw_cfg_add_i32(void *opaque, uint16_t key, uint32_t value);
+int fw_cfg_add_i64(void *opaque, uint16_t key, uint64_t value);
+int fw_cfg_add_callback(void *opaque, uint16_t key, FWCfgCallback callback,
+                        void *callback_opaque, uint8_t *data, size_t len);
+void *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
+		target_phys_addr_t crl_addr, target_phys_addr_t data_addr);
+
+#endif /* NO_QEMU_PROTOS */
+
+#endif