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/*
* Copyright (c) 2004-2011 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef BMI_H
#define BMI_H
/*
* 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 ATH6KL, to provide
* patches to code that is already resident on ATH6KL, 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 ATH6KL 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.
*/
#define MAX_BMI_CMDBUF_SZ (BMI_DATASZ_MAX + \
(sizeof(u32) * 3 /* cmd + addr + len */))
/* 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:
* u32 command (BMI_DONE)
* Response format: none
*/
#define BMI_READ_MEMORY 2
/*
* Semantics: Host reads ATH6KL memory
* Request format:
* u32 command (BMI_READ_MEMORY)
* u32 address
* u32 length, at most BMI_DATASZ_MAX
* Response format:
* u8 data[length]
*/
#define BMI_WRITE_MEMORY 3
/*
* Semantics: Host writes ATH6KL memory
* Request format:
* u32 command (BMI_WRITE_MEMORY)
* u32 address
* u32 length, at most BMI_DATASZ_MAX
* u8 data[length]
* Response format: none
*/
#define BMI_EXECUTE 4
/*
* Semantics: Causes ATH6KL to execute code
* Request format:
* u32 command (BMI_EXECUTE)
* u32 address
* u32 parameter
* Response format:
* u32 return value
*/
#define BMI_SET_APP_START 5
/*
* Semantics: Set Target application starting address
* Request format:
* u32 command (BMI_SET_APP_START)
* u32 address
* Response format: none
*/
#define BMI_READ_SOC_REGISTER 6
/*
* Semantics: Read a 32-bit Target SOC register.
* Request format:
* u32 command (BMI_READ_REGISTER)
* u32 address
* Response format:
* u32 value
*/
#define BMI_WRITE_SOC_REGISTER 7
/*
* Semantics: Write a 32-bit Target SOC register.
* Request format:
* u32 command (BMI_WRITE_REGISTER)
* u32 address
* u32 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:
* u32 command (BMI_GET_TARGET_ID/INFO)
* Response format1 (old firmware):
* u32 TargetVersionID
* Response format2 (newer firmware):
* u32 TARGET_VERSION_SENTINAL
* struct bmi_target_info;
*/
#define TARGET_VERSION_SENTINAL 0xffffffff
#define TARGET_TYPE_AR6003 3
#define TARGET_TYPE_AR6004 5
#define BMI_ROMPATCH_INSTALL 9
/*
* Semantics: Install a ROM Patch.
* Request format:
* u32 command (BMI_ROMPATCH_INSTALL)
* u32 Target ROM Address
* u32 Target RAM Address or Value (depending on Target Type)
* u32 Size, in bytes
* u32 Activate? 1-->activate;
* 0-->install but do not activate
* Response format:
* u32 PatchID
*/
#define BMI_ROMPATCH_UNINSTALL 10
/*
* Semantics: Uninstall a previously-installed ROM Patch,
* automatically deactivating, if necessary.
* Request format:
* u32 command (BMI_ROMPATCH_UNINSTALL)
* u32 PatchID
*
* Response format: none
*/
#define BMI_ROMPATCH_ACTIVATE 11
/*
* Semantics: Activate a list of previously-installed ROM Patches.
* Request format:
* u32 command (BMI_ROMPATCH_ACTIVATE)
* u32 rompatch_count
* u32 PatchID[rompatch_count]
*
* Response format: none
*/
#define BMI_ROMPATCH_DEACTIVATE 12
/*
* Semantics: Deactivate a list of active ROM Patches.
* Request format:
* u32 command (BMI_ROMPATCH_DEACTIVATE)
* u32 rompatch_count
* u32 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.
* u32 command (BMI_LZ_STREAM_START)
* u32 address
* Note: Not supported on all versions of ROM firmware.
*/
#define BMI_LZ_DATA 14
/*
* Semantics: Host writes ATH6KL 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:
* u32 command (BMI_LZ_DATA)
* u32 length (of compressed data),
* at most BMI_DATASZ_MAX
* u8 CompressedData[length]
* Response format: none
* Note: Not supported on all versions of ROM firmware.
*/
#define BMI_COMMUNICATION_TIMEOUT 1000 /* in msec */
struct ath6kl;
struct ath6kl_bmi_target_info {
__le32 byte_count; /* size of this structure */
__le32 version; /* target version id */
__le32 type; /* target type */
} __packed;
int ath6kl_bmi_init(struct ath6kl *ar);
void ath6kl_bmi_cleanup(struct ath6kl *ar);
int ath6kl_bmi_done(struct ath6kl *ar);
int ath6kl_bmi_get_target_info(struct ath6kl *ar,
struct ath6kl_bmi_target_info *targ_info);
int ath6kl_bmi_read(struct ath6kl *ar, u32 addr, u8 *buf, u32 len);
int ath6kl_bmi_write(struct ath6kl *ar, u32 addr, u8 *buf, u32 len);
int ath6kl_bmi_execute(struct ath6kl *ar,
u32 addr, u32 *param);
int ath6kl_bmi_set_app_start(struct ath6kl *ar,
u32 addr);
int ath6kl_bmi_reg_read(struct ath6kl *ar, u32 addr, u32 *param);
int ath6kl_bmi_reg_write(struct ath6kl *ar, u32 addr, u32 param);
int ath6kl_bmi_lz_data(struct ath6kl *ar,
u8 *buf, u32 len);
int ath6kl_bmi_lz_stream_start(struct ath6kl *ar,
u32 addr);
int ath6kl_bmi_fast_download(struct ath6kl *ar,
u32 addr, u8 *buf, u32 len);
#endif
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