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//------------------------------------------------------------------------------
// Copyright (c) 2004-2010 Atheros Corporation. All rights reserved.
//
// The software source and binaries included in this development package are
// licensed, not sold. You, or your company, received the package under one
// or more license agreements. The rights granted to you are specifically
// listed in these license agreement(s). All other rights remain with Atheros
// Communications, Inc., its subsidiaries, or the respective owner including
// those listed on the included copyright notices. Distribution of any
// portion of this package must be in strict compliance with the license
// agreement(s) terms.
// </copyright>
//
// <summary>
// Wifi driver for AR6003
// </summary>
//
//------------------------------------------------------------------------------
//==============================================================================
// Author(s): ="Atheros"
//==============================================================================
#ifndef __BMI_MSG_H__
#define __BMI_MSG_H__
#ifndef ATH_TARGET
#include "athstartpack.h"
#endif
/*
* Bootloader Messaging Interface (BMI)
*
* BMI is a very simple messaging interface used during initialization
* to read memory, write memory, execute code, and to define an
* application entry PC.
*
* It is used to download an application to AR6K, to provide
* patches to code that is already resident on AR6K, and generally
* to examine and modify state. The Host has an opportunity to use
* BMI only once during bootup. Once the Host issues a BMI_DONE
* command, this opportunity ends.
*
* The Host writes BMI requests to mailbox0, and reads BMI responses
* from mailbox0. BMI requests all begin with a command
* (see below for specific commands), and are followed by
* command-specific data.
*
* Flow control:
* The Host can only issue a command once the Target gives it a
* "BMI Command Credit", using AR6K Counter #4. As soon as the
* Target has completed a command, it issues another BMI Command
* Credit (so the Host can issue the next command).
*
* BMI handles all required Target-side cache flushing.
*/
/* Maximum data size used for BMI transfers */
#define BMI_DATASZ_MAX 256
/* BMI Commands */
#define BMI_NO_COMMAND 0
#define BMI_DONE 1
/*
* Semantics: Host is done using BMI
* Request format:
* A_UINT32 command (BMI_DONE)
* Response format: none
*/
#define BMI_READ_MEMORY 2
/*
* Semantics: Host reads AR6K memory
* Request format:
* A_UINT32 command (BMI_READ_MEMORY)
* A_UINT32 address
* A_UINT32 length, at most BMI_DATASZ_MAX
* Response format:
* A_UINT8 data[length]
*/
#define BMI_WRITE_MEMORY 3
/*
* Semantics: Host writes AR6K memory
* Request format:
* A_UINT32 command (BMI_WRITE_MEMORY)
* A_UINT32 address
* A_UINT32 length, at most BMI_DATASZ_MAX
* A_UINT8 data[length]
* Response format: none
*/
/*
* Capbility to write "segmented files" is provided for two reasons
* 1) backwards compatibility for certain situations where Hosts
* have limited flexibility
* 2) because it's darn convenient.
*
* A segmented file consists of a file header followed by an arbitrary number
* of segments. Each segment contains segment metadata -- a Target address and
* a length -- followed by "length" bytes of data. A segmented file ends with
* a segment that specifies length=BMI_SGMTFILE_DONE. When a segmented file
* is sent to the Target, firmware writes each segment to the specified address.
*
* Special cases:
* 1) If a segment's metadata indicates length=BMI_SGMTFILE_EXEC, then the
* specified address is used as a function entry point for a brief function
* with prototype "(void *)(void)". That function is called immediately.
* After execution of the function completes, firmware continues with the
* next segment. No data is expected when length=BMI_SGMTFILE_EXEC.
*
* 2) If a segment's metadata indicates length=BMI_SGMTFILE_BEGINADDR, then
* the specified address is established as the application start address
* so that a subsequent BMI_DONE jumps there.
*
* 3) If a segment's metadata indicates length=BMI_SGMTFILE_BDDATA, then
* the specified address is used as the (possibly compressed) length of board
* data, which is loaded into the proper Target address as specified by
* hi_board_data. In addition, the hi_board_data_initialized flag is set.
*
* A segmented file is sent to the Target using a sequence of 1 or more
* BMI_WRITE_MEMORY commands. The first such command must have
* address=BMI_SEGMENTED_WRITE_ADDR. Subsequent BMI_WRITE_MEMORY commands
* can use an arbitrary address. In each BMI_WRITE_MEMORY command, the
* length specifies the number of data bytes transmitted (except for the
* special cases listed above).
*
* Alternatively, a segmented file may be sent to the Target using a
* BMI_LZ_STREAM_START command with address=BMI_SEGMENTED_WRITE_ADDR
* followed by a series of BMI_LZ_DATA commands that each send the next portion
* of the segmented file.
*
* The data segments may be lz77 compressed. In this case, the segmented file
* header flag, BMI_SGMTFILE_FLAG_COMPRESS, must be set. Note that segmented
* file METAdata is never compressed; only the data segments themselves are
* compressed. There is no way to mix compressed and uncompressed data segments
* in a single segmented file. Compressed (or uncompressed) segments are handled
* by both BMI_WRITE_MEMORY and by BMI_LZ_DATA commands. (Compression is an
* attribute of the segmented file rather than of the command used to transmit
* it.)
*/
#define BMI_SEGMENTED_WRITE_ADDR 0x1234
/* File header for a segmented file */
struct bmi_segmented_file_header {
A_UINT32 magic_num;
A_UINT32 file_flags;
};
#define BMI_SGMTFILE_MAGIC_NUM 0x544d4753 /* "SGMT" */
#define BMI_SGMTFILE_FLAG_COMPRESS 1
/* Metadata for a segmented file segment */
struct bmi_segmented_metadata {
A_UINT32 addr;
A_UINT32 length;
};
/* Special values for bmi_segmented_metadata.length (all have high bit set) */
#define BMI_SGMTFILE_DONE 0xffffffff /* end of segmented data */
#define BMI_SGMTFILE_BDDATA 0xfffffffe /* Board Data segment */
#define BMI_SGMTFILE_BEGINADDR 0xfffffffd /* set beginning address */
#define BMI_SGMTFILE_EXEC 0xfffffffc /* immediate function execution */
#define BMI_EXECUTE 4
/*
* Semantics: Causes AR6K to execute code
* Request format:
* A_UINT32 command (BMI_EXECUTE)
* A_UINT32 address
* A_UINT32 parameter
* Response format:
* A_UINT32 return value
*/
/*
* Note: In order to support the segmented file feature
* (see BMI_WRITE_MEMORY), when the address specified in a
* BMI_EXECUTE command matches (same physical address)
* BMI_SEGMENTED_WRITE_ADDR, it is ignored. Instead, execution
* begins at the address specified by hi_app_start.
*/
#define BMI_SET_APP_START 5
/*
* Semantics: Set Target application starting address
* Request format:
* A_UINT32 command (BMI_SET_APP_START)
* A_UINT32 address
* Response format: none
*/
#define BMI_READ_SOC_REGISTER 6
/*
* Semantics: Read a 32-bit Target SOC register.
* Request format:
* A_UINT32 command (BMI_READ_REGISTER)
* A_UINT32 address
* Response format:
* A_UINT32 value
*/
#define BMI_WRITE_SOC_REGISTER 7
/*
* Semantics: Write a 32-bit Target SOC register.
* Request format:
* A_UINT32 command (BMI_WRITE_REGISTER)
* A_UINT32 address
* A_UINT32 value
*
* Response format: none
*/
#define BMI_GET_TARGET_ID 8
#define BMI_GET_TARGET_INFO 8
/*
* Semantics: Fetch the 4-byte Target information
* Request format:
* A_UINT32 command (BMI_GET_TARGET_ID/INFO)
* Response format1 (old firmware):
* A_UINT32 TargetVersionID
* Response format2 (newer firmware):
* A_UINT32 TARGET_VERSION_SENTINAL
* struct bmi_target_info;
*/
PREPACK struct bmi_target_info {
A_UINT32 target_info_byte_count; /* size of this structure */
A_UINT32 target_ver; /* Target Version ID */
A_UINT32 target_type; /* Target type */
} POSTPACK;
#define TARGET_VERSION_SENTINAL 0xffffffff
#define TARGET_TYPE_AR6001 1
#define TARGET_TYPE_AR6002 2
#define TARGET_TYPE_AR6003 3
#define TARGET_TYPE_MCKINLEY 5
#define BMI_ROMPATCH_INSTALL 9
/*
* Semantics: Install a ROM Patch.
* Request format:
* A_UINT32 command (BMI_ROMPATCH_INSTALL)
* A_UINT32 Target ROM Address
* A_UINT32 Target RAM Address or Value (depending on Target Type)
* A_UINT32 Size, in bytes
* A_UINT32 Activate? 1-->activate;
* 0-->install but do not activate
* Response format:
* A_UINT32 PatchID
*/
#define BMI_ROMPATCH_UNINSTALL 10
/*
* Semantics: Uninstall a previously-installed ROM Patch,
* automatically deactivating, if necessary.
* Request format:
* A_UINT32 command (BMI_ROMPATCH_UNINSTALL)
* A_UINT32 PatchID
*
* Response format: none
*/
#define BMI_ROMPATCH_ACTIVATE 11
/*
* Semantics: Activate a list of previously-installed ROM Patches.
* Request format:
* A_UINT32 command (BMI_ROMPATCH_ACTIVATE)
* A_UINT32 rompatch_count
* A_UINT32 PatchID[rompatch_count]
*
* Response format: none
*/
#define BMI_ROMPATCH_DEACTIVATE 12
/*
* Semantics: Deactivate a list of active ROM Patches.
* Request format:
* A_UINT32 command (BMI_ROMPATCH_DEACTIVATE)
* A_UINT32 rompatch_count
* A_UINT32 PatchID[rompatch_count]
*
* Response format: none
*/
#define BMI_LZ_STREAM_START 13
/*
* Semantics: Begin an LZ-compressed stream of input
* which is to be uncompressed by the Target to an
* output buffer at address. The output buffer must
* be sufficiently large to hold the uncompressed
* output from the compressed input stream. This BMI
* command should be followed by a series of 1 or more
* BMI_LZ_DATA commands.
* A_UINT32 command (BMI_LZ_STREAM_START)
* A_UINT32 address
* Note: Not supported on all versions of ROM firmware.
*/
#define BMI_LZ_DATA 14
/*
* Semantics: Host writes AR6K memory with LZ-compressed
* data which is uncompressed by the Target. This command
* must be preceded by a BMI_LZ_STREAM_START command. A series
* of BMI_LZ_DATA commands are considered part of a single
* input stream until another BMI_LZ_STREAM_START is issued.
* Request format:
* A_UINT32 command (BMI_LZ_DATA)
* A_UINT32 length (of compressed data),
* at most BMI_DATASZ_MAX
* A_UINT8 CompressedData[length]
* Response format: none
* Note: Not supported on all versions of ROM firmware.
*/
#define BMI_NVRAM_PROCESS 15
#define BMI_NVRAM_SEG_NAME_SZ 16
/*
* Semantics: Cause Target to search NVRAM (if any) for a
* segment with the specified name and process it according
* to NVRAM metadata.
* Request format:
* A_UINT32 command (BMI_NVRAM_PROCESS)
* A_UCHAR name[BMI_NVRAM_SEG_NAME_SZ] name (LE format)
* Response format:
* A_UINT32 0, if nothing was executed;
* otherwise the value returned from the
* last NVRAM segment that was executed
*/
#ifndef ATH_TARGET
#include "athendpack.h"
#endif
#endif /* __BMI_MSG_H__ */