/** @file\r
QEMU/KVM Firmware Configuration access\r
\r
- Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (C) 2013, Red Hat, Inc.\r
+\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
#ifndef __FW_CFG_LIB__\r
#define __FW_CFG_LIB__\r
\r
+//\r
+// The size, in bytes, of names of firmware configuration files, including at\r
+// least one terminating NUL byte.\r
+//\r
+#define QEMU_FW_CFG_FNAME_SIZE 56\r
+\r
typedef enum {\r
QemuFwCfgItemSignature = 0x0000,\r
QemuFwCfgItemInterfaceVersion = 0x0001,\r
Returns a boolean indicating if the firmware configuration interface\r
is available or not.\r
\r
+ This function may change fw_cfg state.\r
+\r
@retval TRUE The interface is available\r
@retval FALSE The interface is not available\r
\r
);\r
\r
\r
+/**\r
+ Writes firmware configuration bytes from a buffer\r
+\r
+ If called multiple times, then the data written will\r
+ continue at the offset of the firmware configuration\r
+ item where the previous write ended.\r
+\r
+ @param[in] Size - Size in bytes to write\r
+ @param[in] Buffer - Buffer to read data from\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+QemuFwCfgWriteBytes (\r
+ IN UINTN Size,\r
+ IN VOID *Buffer\r
+ );\r
+\r
+\r
/**\r
Reads a UINT8 firmware configuration value\r
\r
OUT FIRMWARE_CONFIG_ITEM *Item,\r
OUT UINTN *Size\r
);\r
+\r
+\r
+/**\r
+ Returns a boolean indicating if the firmware configuration interface is\r
+ available for library-internal purposes.\r
+\r
+ This function never changes fw_cfg state.\r
+\r
+ @retval TRUE The interface is available internally.\r
+ @retval FALSE The interface is not available internally.\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+InternalQemuFwCfgIsAvailable (\r
+ VOID\r
+ );\r
+\r
+\r
+/**\r
+ Determine if S3 support is explicitly enabled.\r
+\r
+ @retval TRUE if S3 support is explicitly enabled.\r
+ FALSE otherwise. This includes unavailability of the firmware\r
+ configuration interface.\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+QemuFwCfgS3Enabled (\r
+ VOID\r
+ );\r
+\r
#endif\r
\r