105 lines
3 KiB
C
105 lines
3 KiB
C
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/** @file hal/micro/cortexm3/mfg-token.c
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* @brief Cortex-M3 Manufacturing-Token system
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*
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* <!--(C) COPYRIGHT 2010 STMicroelectronics. All rights reserved. -->
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*/
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#include PLATFORM_HEADER
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#include "error.h"
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#include "hal/micro/cortexm3/flash.h"
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#include "mfg-token.h"
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#define DEFINETOKENS
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#define TOKEN_MFG(name,creator,iscnt,isidx,type,arraysize,...) \
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const int16u TOKEN_##name = TOKEN_##name##_ADDRESS;
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#include "hal/micro/cortexm3/token-manufacturing.h"
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#undef TOKEN_DEF
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#undef TOKEN_MFG
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#undef DEFINETOKENS
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static const int8u nullEui[] = { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF };
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void halInternalGetMfgTokenData(void *data, int16u ID, int8u index, int8u len)
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{
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int8u *ram = (int8u*)data;
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//0x7F is a non-indexed token. Remap to 0 for the address calculation
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index = (index==0x7F) ? 0 : index;
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if(ID == MFG_EUI_64_LOCATION) {
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//There are two EUI64's stored in the Info Blocks, St and Custom.
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//0x0A00 is the address used by the generic EUI64 token, and it is
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//token.c's responbility to pick the returned EUI64 from either St
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//or Custom. Return the Custom EUI64 if it is not all FF's, otherwise
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//return the St EUI64.
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tokTypeMfgEui64 eui64;
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halCommonGetMfgToken(&eui64, TOKEN_MFG_CUSTOM_EUI_64);
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if(MEMCOMPARE(eui64,nullEui, 8 /*EUI64_SIZE*/) == 0) {
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halCommonGetMfgToken(&eui64, TOKEN_MFG_ST_EUI_64);
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}
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MEMCOPY(ram, eui64, 8 /*EUI64_SIZE*/);
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} else {
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//read from the Information Blocks. The token ID is only the
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//bottom 16bits of the token's actual address. Since the info blocks
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//exist in the range DATA_BIG_INFO_BASE-DATA_BIG_INFO_END, we need
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//to OR the ID with DATA_BIG_INFO_BASE to get the real address.
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int32u realAddress = (DATA_BIG_INFO_BASE|ID) + (len*index);
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int8u *flash = (int8u *)realAddress;
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MEMCOPY(ram, flash, len);
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}
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}
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void halInternalSetMfgTokenData(int16u token, void *data, int8u len)
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{
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StStatus flashStatus;
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int32u realAddress = (DATA_BIG_INFO_BASE|token);
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int8u * flash = (int8u *)realAddress;
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int32u i;
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//The flash library (and hardware) requires the address and length to both
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//be multiples of 16bits. Since this API is only valid for writing to
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//the CIB, verify that the token+len falls within the CIB.
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assert((token&1) != 1);
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assert((len&1) != 1);
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assert((realAddress>=CIB_BOTTOM) && ((realAddress+len-1)<=CIB_TOP));
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//CIB manufacturing tokens can only be written by on-chip code if the token
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//is currently unprogrammed. Verify the entire token is unwritten. The
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//flash library performs a similar check, but verifying here ensures that
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//the entire token is unprogrammed and will prevent partial writes.
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for(i=0;i<len;i++) {
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assert(flash[i] == 0xFF);
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}
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//Remember, the flash library operates in 16bit quantities, but the
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//token system operates in 8bit quantities. Hence the divide by 2.
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flashStatus = halInternalFlashWrite(realAddress, data, (len/2));
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assert(flashStatus == ST_SUCCESS);
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}
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