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| 28 | 28 | ||
| 29 | # |
29 | # |
| 30 | # Init code for application processors. |
30 | # Init code for application processors. |
| 31 | # |
31 | # |
| 32 | 32 | ||
| 33 | .text |
33 | .section K_TEXT_START_2 |
| 34 | 34 | ||
| 35 | #ifdef __SMP__ |
35 | #ifdef __SMP__ |
| 36 | 36 | ||
| 37 | .global ap_boot |
37 | .global ap_boot |
| 38 | 38 | ||
| Line 45... | Line 45... | ||
| 45 | 45 | ||
| 46 | .align 4096 |
46 | .align 4096 |
| 47 | ap_boot: |
47 | ap_boot: |
| 48 | .code16 |
48 | .code16 |
| 49 | cli |
49 | cli |
| 50 | - | ||
| 51 | xorw %ax,%ax |
50 | xorw %ax,%ax |
| 52 | movw %ax,%ds |
51 | movw %ax,%ds |
| 53 | 52 | ||
| 54 | lgdt gdtr |
53 | lgdt gdtr |
| 55 | movl %cr0,%eax |
54 | movl %cr0,%eax |
| 56 | orl $1,%eax |
55 | orl $1,%eax |
| 57 | movl %eax,%cr0 |
56 | movl %eax,%cr0 |
| - | 57 | jmp 0f |
|
| - | 58 | 0: |
|
| 58 | ljmp $KTEXT,$jump_to_kernel |
59 | ljmp $KTEXT,$jump_to_kernel |
| 59 | 60 | ||
| 60 | # this is where the AP enters the kernel space |
61 | # this is where the AP enters the kernel space |
| 61 | jump_to_kernel: |
62 | jump_to_kernel: |
| 62 | .code32 |
63 | .code32 |
| 63 | movw $KDATA,%ax |
64 | movw $KDATA,%ax |
| 64 | movw %ax,%ds |
65 | movw %ax,%ds |
| 65 | movw %ax,%es |
66 | movw %ax,%es |
| 66 | movw %ax,%ss |
67 | movw %ax,%ss |
| 67 | movl $ctx,%eax |
68 | movl $(ctx-0x80000000),%eax # KA2PA((__address) &ctx) |
| 68 | movl (%eax),%esp |
69 | movl (%eax),%esp |
| 69 | 70 | ||
| 70 | lidt idtr |
71 | lidt idtr |
| 71 | 72 | ||
| - | 73 | call map_kernel |
|
| - | 74 | ||
| 72 | ljmp $KTEXT,$main_ap |
75 | ljmp $KTEXT,$main_ap |
| 73 | 76 | ||
| 74 | #endif /* __SMP__ */ |
77 | #endif /* __SMP__ */ |