avr: started working on base system vs. main system.

base system will be a base system which can be used to flash and start
the main system.

avr/utils.asm

@@ -146,6 +146,7 @@ Utils_FillSram_end:
 
 
 
+#if 0
 ; ---------------------------------------------------------------------------
 ; Increment a 32 bit counter at the address given by X.
 ; IN:
@@ -170,6 +171,7 @@ Utils_IncrementCounter32:
   st -x, r19
   st -x, r18
   ret
+#endif
 
 
 
@@ -243,105 +245,6 @@ Utils_WriteEeprom:
 
 
 
-
-
-
-; ---------------------------------------------------------------------------
-; Utils_ReadFlashPageIntoPageBuffer
-;
-;
-; IN:
-; - Z: Address to read from (byte address as for LPM!)
-; OUT:
-; - nothing
-; MODIFIED REGISTERS: R0, R1, R15, R16, R20, R24, R25, Z
-
-Utils_ReadFlashPageIntoPageBuffer:
-  in r15, SREG
-  cli
-    ldi r24, LOW(PAGESIZE*2)
-    ldi r25, HIGH(PAGESIZE*2)
-Utils_ReadFlashPageIntoPageBuffer_loop:
-      lpm r0, Z+                                ; read source data from FLASH (low)
-      lpm r1, Z                                 ; read source data from FLASH (high)
-      sbiw ZH:ZL, 1                             ; rewind Z address for following SPM
-      ldi r20, (1<<SPMEN)                       ; enable next SPM, write into temp page buffer
-      rcall utilsDoSpm                          ; (R16)
-      adiw ZH:ZL, 2
-      sbiw r25:r24, 2                           ;use subi for PAGESIZEB<=256
-    brne Utils_ReadFlashPageIntoPageBuffer_loop
-  out SREG, r15
-  ret
-
-
-
-; ---------------------------------------------------------------------------
-; Utils_EraseFlashPage
-;
-;
-; IN:
-; - Z: Address of the page to erase.
-; OUT:
-; - nothing
-; MODIFIED REGISTERS: R0, R1, R15, R16, R18, R19, R20
-
-Utils_EraseFlashPage:
-  in r15, SREG
-  cli
-    ldi r20, (1<<PGERS) + (1<<SPMEN)          ; enable next SPM, erase page (R1/R0 ignored)
-    rcall utilsDoSpm                          ; (R16)
-  out SREG, r15
-  ret
-
-
-
-; ---------------------------------------------------------------------------
-; Utils_WriteFlashPage
-;
-;
-; IN:
-; - Z: Address of the page to erase.
-; OUT:
-; - nothing
-; MODIFIED REGISTERS: R0, R1, R15, R16, R18, R19, R20
-
-Utils_WriteFlashPage:
-  in r15, SREG
-  cli
-    ldi r20, (1<<PGWRT) + (1<<SPMEN)          ; enable next SPM, erase page (R1/R0 ignored)
-    rcall utilsDoSpm                          ; (R16)
-  out SREG, r15
-  ret
-
-
-
-; ---------------------------------------------------------------------------
-; utilsDoSpm
-;
-; wait until possible previous SPM finished and then issue another SPM.
-;
-; IN:
-; - R20: value for register SPMCR
-; - R0:  low value for SPM
-; - R1:  high value for SPM
-; - Z  : address for SPM (byte address!)
-; OUT:
-; - nothing
-; REGS: R16
-
-utilsDoSpm:
-wait:                ; wait for possibly previous SPM to complete
-    in r16, SPMCSR
-    sbrc r16, SPMEN
-  rjmp wait
-  ; SPM timed sequence
-  out SPMCSR, r20
-  spm
-  ret
-
-
-
-
 ; ---------------------------------------------------------------------------
 ; Utils_PseudoRandom
 ;