| 67,25 → 67,10 |
|---|
| and %o0, %l0, %l7 ! l7 <= bootstrap processor? |
| andn %o0, %l0, %l6 ! l6 <= start of physical memory |
| |
| sethi %hi(physmem_base), %l5 |
| stx %l6, [%l5 + %lo(physmem_base)] |
| |
| /* |
| * Get bits 40:13 of physmem_base. |
| */ |
| sethi %hi(mask_40_13), %l4 |
| sethi %hi(physmem_base_40_13), %l3 |
| ldx [%l4 + %lo(mask_40_13)], %l4 |
| and %l6, %l4, %l5 ! l5 <= physmem_base[40:13] |
| stx %l5, [%l3 + %lo(physmem_base_40_13)] |
| |
| /* |
| * Prepare kernel 8K TLB data template. |
| */ |
| sethi %hi(kernel_8k_tlb_data_template), %l4 |
| ldx [%l4 + %lo(kernel_8k_tlb_data_template)], %l3 |
| or %l3, %l5, %l3 |
| stx %l3, [%l4 + %lo(kernel_8k_tlb_data_template)] |
| ! Get bits 40:13 of physmem_base. |
| srlx %l6, 13, %l5 |
| sllx %l5, 13 + (63 - 40), %l5 |
| srlx %l5, 63 - 40, %l5 ! l5 <= physmem_base[40:13] |
| |
| /* |
| * Setup basic runtime environment. |
| 244,6 → 229,22 |
|---|
| nop |
| |
| /* |
| * Save physmem_base for use by the mm subsystem. |
| * %l6 contains starting physical address |
| */ |
| sethi %hi(physmem_base), %l4 |
| stx %l6, [%l4 + %lo(physmem_base)] |
| |
| /* |
| * Precompute kernel 8K TLB data template. |
| * %l5 contains starting physical address bits [40:13] |
| */ |
| sethi %hi(kernel_8k_tlb_data_template), %l4 |
| ldx [%l4 + %lo(kernel_8k_tlb_data_template)], %l3 |
| or %l3, %l5, %l3 |
| stx %l3, [%l4 + %lo(kernel_8k_tlb_data_template)] |
| |
| /* |
| * So far, we have not touched the stack. |
| * It is a good idea to set the kernel stack to a known state now. |
| */ |
| 340,20 → 341,11 |
|---|
| physmem_base: |
| .quad 0 |
| |
| .global physmem_base_40_13 |
| physmem_base_40_13: ! physmem_base & mask_40_13 |
| .quad 0 |
| |
| .global mask_40_13 |
| mask_40_13: ! constant with bits 40:13 set |
| .quad (((1 << 41) - 1) & ~((1 << 13) - 1)) |
| |
| /* |
| * This variable is used by the fast_data_MMU_miss trap handler. |
| * It is initialized to reflect the starting address of physical |
| * memory. |
| * In runtime, it is further modified to reflect the starting address of |
| * physical memory. |
| */ |
| .global kernel_8k_tlb_data_template |
| kernel_8k_tlb_data_template: |
| .quad ((1 << TTE_V_SHIFT) | TTE_CV | TTE_CP | TTE_P | TTE_W) |
| |