diff options
Diffstat (limited to 'llfw/nvramlog.S')
| -rw-r--r-- | llfw/nvramlog.S | 80 |
1 files changed, 40 insertions, 40 deletions
diff --git a/llfw/nvramlog.S b/llfw/nvramlog.S index 317ccce..9c3e419 100644 --- a/llfw/nvramlog.S +++ b/llfw/nvramlog.S @@ -45,7 +45,7 @@ * Return 0 if no manipulation was found, otherwise return 1 * * input: - * r3 - NVRAM Base Address + * r3 - NVRAM Base Address * * output: * r3 - status: 0 = ok, 1 = corrupt @@ -71,7 +71,7 @@ ASM_ENTRY(checkLogHeaderData) LOAD64( r6, LLFW_LOG_BE0_NAME) subf r5, r6, r5 add r4, r4, r5 - + lhz r5, LLFW_LOG_POS_DATA_OFFSET(r3) //check data offset addi r5, r5, -LLFW_LOG_BE0_DATA_OFFSET add r4, r4, r5 @@ -95,12 +95,12 @@ ASM_ENTRY(checkLogHeaderData) * bit 1: if partition header checksum is corrupt * bit 2: if CRC is corrupt * bit 3: if Header entries are corrupt - * - * input: + * + * input: * r3 - NVRAM log address (BASE + NVRAM_LOG_OFFSET) * - * output: - * r3 - CRC status + * output: + * r3 - CRC status * r4 - NVRAM log address * * Modifies Register: R3, R4, R5, R6, R7, R8, R9 @@ -126,7 +126,7 @@ ASM_ENTRY(.checkLogPartition) ori r7, r7, 1 // 0 as checksum is invalid 0: mr r3, r4 - bl checkLogHeaderData + bl checkLogHeaderData cmpdi 7, r3, 0 beq+ 7, 0f ori r7, r7, 4 @@ -135,13 +135,13 @@ ASM_ENTRY(.checkLogPartition) mtlr r8 blr /***************************************************************************** - * checkinitLog: check the NVRAM Log Partition Header + * checkinitLog: check the NVRAM Log Partition Header * initialize the NVRAM if the Header was modified - * - * input: - * r3 - NVRAM BASE address * - * output: + * input: + * r3 - NVRAM BASE address + * + * output: * r3 - 0 = check ok, no new header written * r3 - 1 = check not ok, header and NVRAM initialized * r4 - NVRAM log address @@ -152,20 +152,20 @@ ASM_ENTRY(.checkLogPartition) ASM_ENTRY(.checkinitLog) ASM_ENTRY(checkinitLog) mflr r9 - bl .checkLogPartition //r3..r8, r4_out = r3_in + bl .checkLogPartition //r3..r8, r4_out = r3_in mtlr r9 - + cmpwi 7, r3, 0 mr r3, r4 // r3=NVRAM_LOG address bne- 7, .initLog // if header is not ok, init header li r3, 0 - blr // header OK, return 0 + blr // header OK, return 0 -/* this is basically just a copy of .initLog +/* this is basically just a copy of .initLog registers used: r3, r4, r5, r6, r7, r9*/ init_log_2nd_be: - mflr r9 + mflr r9 li r6, LLFW_LOG_BE0_LENGTH mulli r6, r6, 0x10 add r6, r7, r6 @@ -192,11 +192,11 @@ init_log_2nd_be: /***************************************************************************** * initLog: initialize the NVRAM with 0 * write a new NVRAM Log-Partition-Header - * - * input: - * r3 - NVRAM BASE address * - * output: + * input: + * r3 - NVRAM BASE address + * + * output: * r3 - 0 = check ok, no new header written * r3 - 1 = check not ok, header and NVRAM initialized * r4 - NVRAM log address @@ -235,10 +235,10 @@ ASM_ENTRY(.initLog) * clearNVRAM: set all not used NVRAM memory to zero * * - * input: + * input: * R3 - NVRAM BASE ADDRESS * - * output: + * output: * R3 - NVARM END ADDRESS * * Modifies Register: r4, r5 @@ -253,18 +253,18 @@ ASM_ENTRY(clearNVRAM) stdx r4, r3,r5 addi r5, r5, 8 bdnz+ 0b - blr + blr /***************************************************************************** * writeNVRAMbyte: write next log into NVRAM - * * - * input: + * + * input: * R3 - byte to be written * R4 - NVRAM Base Address * - * output: + * output: * R3 - byte that was written - * R4 - NVRAM Base Address + * R4 - NVRAM Base Address * * Modifies Register: R3, R4, R5, R6 ****************************************************************************/ @@ -275,22 +275,22 @@ ENTRY(writeLogByte) addi r5, r5, 1 // increment pointer stw r5, LLFW_LOG_POS_POINTER(r4) // store pointer addi r5, r5, -1 // restore old pointer - add r6, r4, r5 // byte address in data section + add r6, r4, r5 // byte address in data section - stb r3, LLFW_LOG_BE0_DATA_OFFSET(r6) + stb r3, LLFW_LOG_BE0_DATA_OFFSET(r6) blr /***************************************************************************** * writeNVRAMbyte: write next log into NVRAM - * * - * input: + * + * input: * R3 - byte to be written * R4 - NVRAM Base Address * - * output: + * output: * R3 - byte that was written - * R4 - NVRAM Base Address + * R4 - NVRAM Base Address * * Modifies Register: R3, R4, R5, R6 ****************************************************************************/ @@ -303,18 +303,18 @@ ENTRY(writeLogByteBE1) addi r5, r5, 1 // increment pointer stw r5, LLFW_LOG_POS_POINTER(r4) // store pointer addi r5, r5, -1 // restore old pointer - add r6, r4, r5 // byte address in data section + add r6, r4, r5 // byte address in data section - stb r3, LLFW_LOG_BE1_DATA_OFFSET(r6) + stb r3, LLFW_LOG_BE1_DATA_OFFSET(r6) blr /***************************************************************************** - * calPartitionHeaderChecksum: calculate the Checksum of the + * calPartitionHeaderChecksum: calculate the Checksum of the * Partition Header as described in .... * * input: r3 - NVRAM BASE address * - * output: R3 - the calculated checksum as 8 bit value + * output: R3 - the calculated checksum as 8 bit value * R4 - NVRAM log address * * Modifies Register: R3, R4, R5, R6 @@ -328,9 +328,9 @@ ASM_ENTRY(.calPartitionHeaderChecksum) addi r4, r4, 1 // r4++ (index) add r5, r5, r3 // r5 new sum =sum + nexed byte rldicl r5, r5, 0, 56 - cmpld 7, r5, r3 + cmpld 7, r5, r3 cmpldi 6, r4, LLFW_LOG_POS_DATA_OFFSET - bge+ 7,.L5 // if new sum > sum + bge+ 7,.L5 // if new sum > sum addi r5, r5, 1 // new sum ++ rldicl r5, r5, 0, 56 .L5: |