diff options
Diffstat (limited to 'board/w7o/post1.S')
| -rw-r--r-- | board/w7o/post1.S | 81 |
1 files changed, 39 insertions, 42 deletions
diff --git a/board/w7o/post1.S b/board/w7o/post1.S index d510cca..21d206e 100644 --- a/board/w7o/post1.S +++ b/board/w7o/post1.S @@ -282,7 +282,7 @@ outside: addi r31, 0, 0x00ff /* r31 = one byte of set bits */ stb r31,0(r28) /* save ff in referance address */ - /* ghost (inner) loop, now check all posible ghosted addresses */ + /* ghost (inner) loop, now check all posible ghosted addresses */ addi r29, 0, 0 /* start ghosted loop counter at 0 */ inside: /* @@ -323,11 +323,11 @@ Casper: /* we found a ghost !! */ addi r3, 0, ERR_ADDF /* get indexed error message */ bl log_err /* log error led error code */ gb_done: /* pack your bags, and go home */ - lmw r25, 8(r1) /* restore r25 - r31 from stack */ - lwz r0, +40(r1) /* Get saved link register */ - addi r1, r1, +36 /* Remove frame from stack */ - mtlr r0 /* Restore link register */ - blr /* Return to calling function */ + lmw r25, 8(r1) /* restore r25 - r31 from stack */ + lwz r0, +40(r1) /* Get saved link register */ + addi r1, r1, +36 /* Remove frame from stack */ + mtlr r0 /* Restore link register */ + blr /* Return to calling function */ /**************************************************** ******** SDRAM data fill tests ********** @@ -373,7 +373,6 @@ Bit_Buster: blr /* Return to calling function */ - /**************************************************** ******** fill test ******** ***************************************************/ @@ -382,12 +381,12 @@ Bit_Buster: /* r4 = Value to write */ /* r3 = Error code */ fill_test: - mflr r0 /* Get link register */ - stwu r1, -32(r1) /* Save back chain and move SP */ - stw r0, +36(r1) /* Save link register */ - stmw r27, 8(r1) /* save r27 - r31 on stack */ - /* r31 - scratch register */ - /* r30 - memory address */ + mflr r0 /* Get link register */ + stwu r1, -32(r1) /* Save back chain and move SP */ + stw r0, +36(r1) /* Save link register */ + stmw r27, 8(r1) /* save r27 - r31 on stack */ + /* r31 - scratch register */ + /* r30 - memory address */ mr r27, r3 mr r28, r4 mr r29, r5 @@ -412,8 +411,8 @@ ft_0a: bdnz ft_0 /* Round and round... */ mtctr r31 /* setup counter */ addi r30, 0, 0 /* Make r30 = addr 0 */ ft_1: lwz r31, 0(r30) /* get value from memory */ - xor. r31, r31, r28 /* Writen = Read ? */ - bne ft_err /* If bad, than halt */ + xor. r31, r31, r28 /* Writen = Read ? */ + bne ft_err /* If bad, than halt */ addi r30, r30, 4 /* Increment to next word */ andi. r31, r30, 0xffff /* check for 2^16 loops*/ bne ft_1a /* if not there, then skip */ @@ -431,11 +430,11 @@ ft_err: addi r29, r27, 0 /* save current led code */ bl log_err /* output led err code, halt CPU */ fill_done: - lmw r27, 8(r1) /* restore r27 - r31 from stack */ - lwz r0, +36(r1) /* Get saved link register */ - addi r1, r1, +32 /* Remove frame from stack */ - mtlr r0 /* Restore link register */ - blr /* Return to calling function */ + lmw r27, 8(r1) /* restore r27 - r31 from stack */ + lwz r0, +36(r1) /* Get saved link register */ + addi r1, r1, +32 /* Remove frame from stack */ + mtlr r0 /* Restore link register */ + blr /* Return to calling function */ /**************************************************** @@ -563,7 +562,7 @@ log_warn: /* output a warning, then continue with operations */ mtctr r3 log_2: WATCHDOG_RESET /* this keeps dog from barking, */ - /* and takes time */ + /* and takes time */ bdnz log_2 /* loop till time expires */ /* restore stack and return */ @@ -585,27 +584,27 @@ temp_uart_init: stwu r1, -8(r1) /* Save back chain and move SP */ stw r0, +12(r1) /* Save link register */ - addis r3, 0, 0xef60 - ori r3, r3, 0x0303 /* r3 = UART0_LCR */ - addi r4, 0, 0x83 /* n81 format, divisor regs enabled */ - stb r4, 0(r3) + addis r3, 0, 0xef60 + ori r3, r3, 0x0303 /* r3 = UART0_LCR */ + addi r4, 0, 0x83 /* n81 format, divisor regs enabled */ + stb r4, 0(r3) /* set baud rate to use internal clock, baud = (200e6/16)/31/42 = 9600 */ - addis r3, 0, 0xef60 /* Address of baud divisor reg */ - ori r3, r3, 0x0300 /* UART0_DLM */ - addi r4, 0, +42 /* uart baud divisor LSB = 93 */ - stb r4, 0(r3) /* baud = (200 /16)/14/93 */ + addis r3, 0, 0xef60 /* Address of baud divisor reg */ + ori r3, r3, 0x0300 /* UART0_DLM */ + addi r4, 0, +42 /* uart baud divisor LSB = 93 */ + stb r4, 0(r3) /* baud = (200 /16)/14/93 */ - addi r3, r3, 0x0001 /* uart baud divisor addr */ - addi r4, 0, 0 - stb r4, 0(r3) /* Divisor Latch MSB = 0 */ + addi r3, r3, 0x0001 /* uart baud divisor addr */ + addi r4, 0, 0 + stb r4, 0(r3) /* Divisor Latch MSB = 0 */ - addis r3, 0, 0xef60 - ori r3, r3, 0x0303 /* r3 = UART0_LCR */ - addi r4, 0, 0x03 /* n81 format, tx/rx regs enabled */ - stb r4, 0(r3) + addis r3, 0, 0xef60 + ori r3, r3, 0x0303 /* r3 = UART0_LCR */ + addi r4, 0, 0x03 /* n81 format, tx/rx regs enabled */ + stb r4, 0(r3) /* output a few line feeds */ addi r3, 0, '\n' /* load line feed */ @@ -613,7 +612,7 @@ temp_uart_init: addi r3, 0, '\n' /* load line feed */ bl post_putc /* output the char */ - /* restore stack and return */ + /* restore stack and return */ lwz r0, +12(r1) /* Get saved link register */ mtlr r0 /* Restore link register */ addi r1, r1, +8 /* Remove frame from stack */ @@ -633,7 +632,7 @@ post_putc: stw r0, +24(r1) /* Save link register */ stmw r29, 8(r1) /* save r29 - r31 on stack r31 - uart base address - r30 - delay counter + r30 - delay counter r29 - scratch reg */ addis r31, 0, 0xef60 /* Point to uart base */ @@ -687,7 +686,7 @@ pputs_err: b pputs_end /* were outa here */ pputs_term: addi r3, 0, 1 /* set success code */ - /* restore stack and return */ + /* restore stack and return */ pputs_end: lwz r31, 8(r1) /* restore r27 - r31 from stack */ lwz r0, +16(r1) /* Get saved link register */ @@ -696,7 +695,6 @@ pputs_end: blr /* Return to calling function */ - /******************************************************************** ***** disp_hex ***** Routine to display a hex value from a register. @@ -736,10 +734,9 @@ pputh_skip: pputh_err: addi r3, 0, -1 /* set error code */ pputh_done: - /* restore stack and return */ + /* restore stack and return */ lmw r30, 8(r1) /* restore r30 - r31 from stack */ lwz r0, +20(r1) /* Get saved link register */ addi r1, r1, +16 /* Remove frame from stack */ mtlr r0 /* Restore link register */ blr /* Return to calling function */ - |