| 28,7 → 28,6 |
|---|
| |
| #include "asm.h" |
| #include "regname.h" |
| #include "debug.inc" |
| |
| .text |
| |
| 140,9 → 139,6 |
|---|
| |
| real_mode: |
| |
| DEBUG_INIT |
| DEBUG_real_mode |
| |
| # copy kernel to proper location |
| # |
| # r5 = trans (pa) |
| 163,9 → 159,6 |
|---|
| mtctr r31 |
| lwz r29, 0(r5) |
| |
| DEBUG_INIT |
| DEBUG_copy_loop |
| |
| copy_loop: |
| |
| lwz r28, 0(r29) |
| 180,15 → 173,11 |
|---|
| |
| bdnz copy_loop |
| |
| DEBUG_end_copy_loop |
| |
| addi r5, r5, 4 |
| b page_copy |
| |
| copy_end: |
| |
| DEBUG_segments |
| |
| # initially fill segment registers |
| |
| li r31, 0 |
| 220,8 → 209,6 |
|---|
| |
| # invalidate block address translation registers |
| |
| DEBUG_bat |
| |
| li r30, 0 |
| |
| mtspr ibat0u, r30 |
| 251,8 → 238,6 |
|---|
| # create empty Page Hash Table |
| # on top of memory, size 64 KB |
| |
| DEBUG_pht |
| |
| lwz r31, 0(r3) # r31 = memory size |
| |
| lis r30, 65536@h |
| 282,8 → 267,6 |
|---|
| beq clear_end |
| |
| bdnz pht_clear |
| |
| DEBUG_end_pht_clear |
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| clear_end: |
| |
| 291,8 → 274,6 |
|---|
| |
| # create BAT identity mapping |
| |
| DEBUG_mapping |
| |
| lwz r31, 0(r3) # r31 = memory size |
| |
| lis r29, 0x0002 |
| 315,8 → 296,6 |
|---|
| |
| bdnz bat_mask |
| |
| DEBUG_bat_mask |
| |
| andi. r31, r31, 0x07ff # mask = mask & 0x07ff (BAT can map up to 256 MB) |
| |
| li r29, 2 |
| 336,16 → 315,12 |
|---|
| mtspr dbat0l, r30 |
| |
| no_bat: |
| |
| |
| #endif |
| |
| DEBUG_tlb |
| |
| tlbia |
| tlbsync |
| |
| DEBUG_prepare |
| |
| # start the kernel |
| # |
| # pc = KERNEL_START_ADDR |
| 373,8 → 348,6 |
|---|
| |
| sync |
| isync |
| |
| DEBUG_rfi |
| rfi |
| |
| .align PAGE_WIDTH |