| 180,6 → 180,53 |
|---|
| blr |
| |
| jump_to_kernel: |
| |
| # r3 = kernel_start (va) |
| # r4 = memmap (pa) |
| # r5 = real_mode (pa) |
| |
| mtspr srr0, r5 |
| |
| # jumps to real_mode |
| |
| mfmsr r5 |
| lis r6, ~0@h |
| ori r6, r6, ~(msr_ir | msr_dr)@l |
| and r5, r5, r6 |
| mtspr srr1, r5 |
| rfi |
| |
| .section REALMODE |
| .align 12 |
| .global real_mode |
| |
| real_mode: |
| |
| # fill segment registers |
| |
| li r5, 16 |
| mtctr r5 |
| li r5, 0 |
| li r6, 0 |
| |
| seg_fill: |
| |
| mtsrin r6, r5 |
| addis r5, r5, 0x1000 # move to next SR |
| addis r6, r6, 0x10 # add 256 MB, move to next SR |
| |
| bdnz seg_fill |
| |
| # bootstrap kernel |
| # |
| # r3 = kernel_start (va) |
| # r4 = memmap (pa) -> r10 |
| |
| mtspr srr0, r3 |
| |
| mfmsr r5 |
| ori r5, r5, (msr_ir | msr_dr)@l |
| mtspr srr1, r5 |
| |
| mr r10, r4 |
| mtlr r3 |
| blr |
| rfi |