mfg-token.h

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/** @file hal/micro/cortexm3/mfg-token.h
 * @brief Cortex-M3 Manufacturing token system 
 *
 * <!--(C) COPYRIGHT 2010 STMicroelectronics. All rights reserved.        -->
 */
 
#ifndef __MFG_TOKEN_H__
#define __MFG_TOKEN_H__
 

// The manufacturing tokens live in the Info Blocks, while all other tokens
// live in the Simulated EEPROM.  This requires the token names to be defined
// as different data (mfg tokens are memory address, all others are an enum).


#define DEFINETOKENS

/**
 * @description Macro for translating token defs into address variables
 * that point to the correct location in the Info Blocks.  (This is the
 * extern, the actual definition is found in hal/micro/cortexm3/token.c)
 *
 * @param name: The name of the token.
 *
 * @param TOKEN_##name##_ADDRESS: The address in EEPROM at which the token
 * will be stored.  This parameter is generated with a macro above.
 */
#define TOKEN_MFG(name,creator,iscnt,isidx,type,arraysize,...) \
  extern const int16u TOKEN_##name;
  #include "hal/micro/cortexm3/token-manufacturing.h"
#undef TOKEN_MFG

/**
 * @description Macro for translating token definitions into size variables.
 * This provides a convenience for abstracting the 'sizeof(type)' anywhere.
 *
 * @param name: The name of the token.
 *
 * @param type: The token type.  The types are found in token-stack.h.
 */
#define TOKEN_MFG(name,creator,iscnt,isidx,type,arraysize,...) \
  TOKEN_##name##_SIZE = sizeof(type),
  enum {
    #include "hal/micro/cortexm3/token-manufacturing.h"
  };
#undef TOKEN_MFG
#undef TOKEN_DEF
  
/**
 * @description Macro for typedef'ing the CamelCase token type found in
 * token-stack.h to a capitalized TOKEN style name that ends in _TYPE.
 * This macro allows other macros below to use 'token##_TYPE' to declare
 * a local copy of that token.
 *
 * @param name: The name of the token.
 *
 * @param type: The token type.  The types are found in token-stack.h.
 */
#define TOKEN_MFG(name,creator,iscnt,isidx,type,arraysize,...) \
  typedef type TOKEN_##name##_TYPE;
  #include "hal/micro/cortexm3/token-manufacturing.h"
#undef TOKEN_MFG

#undef TOKEN_NEXT_ADDRESS  
  
#define DEFINEADDRESSES
/**
 * @description Macro for creating a 'region' element in the enum below.  This
 * creates an element in the enum that provides a starting point (address) for
 * subsequent tokens to align against.  ( See hal/micro/cortexm3/token.c for
 * the instances of TOKEN_NEXT_ADDRESS() );
 *
 * @param region: The name to give to the element in the address enum..
 *
 * @param address: The address in EEPROM where the region begins.
 */
#define TOKEN_NEXT_ADDRESS(region, address)      \
  TOKEN_##region##_NEXT_ADDRESS = ((address) - 1),

/**
 * @description Macro for creating ADDRESS and END elements for each token in
 * the enum below.  The ADDRESS element is linked to from the the normal
 * TOKEN_##name macro and provides the value passed into the internal token
 * system calls.  The END element is a placeholder providing the starting
 * point for the ADDRESS of the next dynamically positioned token.
 *
 * @param name: The name of the token.
 *
 * @param arraysize: The number of elements in an indexed token (arraysize=1
 * for scalar tokens).
 */
#define TOKEN_MFG(name,creator,iscnt,isidx,type,arraysize,...) \
  TOKEN_##name##_ADDRESS,                                      \
  TOKEN_##name##_END = TOKEN_##name##_ADDRESS +                \
                       (TOKEN_##name##_SIZE * arraysize) - 1,

/**
 * @description The enum that operates on the two macros above.  Also provides
 * an indentifier so the address of the top of the token system can be known.
 */
enum {
  #include "hal/micro/cortexm3/token-manufacturing.h"
};
#undef TOKEN_MFG
#undef DEFINEADDRESSES

#undef DEFINETOKENS


#ifndef DOXYGEN_SHOULD_SKIP_THIS
/**
 * @description Copies the token value from non-volatile storage into a RAM
 * location.  This is the internal function that the exposed API
 * (halCommonGetMfgToken) expands out to.  The
 * API simplifies the access into this function by hiding the size parameter.
 *
 * @param data: A pointer to where the data being read should be placed.
 *
 * @param token: The name of the token to get data from.  On this platform
 * that name is defined as an address.
 *
 * @param index: The index to access.  If the token being accessed is not an
 * indexed token, this parameter is set by the API to be 0x7F.
 *
 * @param len: The length of the token being worked on.  This value is
 * automatically set by the API to be the size of the token.
 */
void halInternalGetMfgTokenData(void *data, int16u token, int8u index, int8u len);

/**
 * @description Sets the value of a token in non-volatile storage.  This is
 * the internal function that the exposed API (halCommonSetMfgToken)
 * expands out to.  The API simplifies the access into this function
 * by hiding the size parameter.
 *
 * <b>NOTE:</b> CIB manufacturing tokens can only be written by on-chip
 * code if the token is currently unprogrammed.
 *
 * <b>REMEMBER:</b> The flash hardware requires writing to 16bit aligned
 * addresses with a length that is multiples of 16bits.
 *
 * @param token: The name of the token to get data from.  On this platform
 * that name is defined as an address.
 *
 * @param data: A pointer to the data being written.
 *
 * @param len: The length of the token being worked on.  This value is
 * automatically set by the API to be the size of the token.
 */
void halInternalSetMfgTokenData(int16u token, void *data, int8u len);

#define halCommonGetMfgToken( data, token )                    \
  halInternalGetMfgTokenData(data, token, 0x7F, token##_SIZE)

#define halCommonGetIndexedMfgToken( data, token, index )      \
  halInternalGetMfgTokenData(data, token, index, token##_SIZE)

#define halCommonSetMfgToken( token, data )                    \
  halInternalSetMfgTokenData(token, data, token##_SIZE)

#endif //DOXYGEN_SHOULD_SKIP_THIS

#endif //__MFG_TOKEN_H__