| 1,5 → 1,5 |
|---|
| # |
| # Copyright (c) 2001-2004 Jakub Jermar |
| # Copyright (c) 2008 Jakub Jermar |
| # Copyright (c) 2005-2006 Martin Decky |
| # All rights reserved. |
| # |
| 45,8 → 45,8 |
|---|
| .global unmapped_ap_boot |
| |
| # This piece of code is real-mode and is meant to be alligned at 4K boundary. |
| # The requirement for such an alignment comes from MP Specification's STARTUP IPI |
| # requirements. |
| # The requirement for such an alignment comes from MP Specification's STARTUP |
| # IPI requirements. |
| |
| .align 4096 |
| unmapped_ap_boot: |
| 59,7 → 59,7 |
|---|
| |
| movl %cr0, %eax |
| orl $1, %eax |
| movl %eax, %cr0 # switch to protected mode |
| movl %eax, %cr0 # switch to protected mode |
| jmpl $gdtselector(KTEXT32_DES), $jump_to_kernel - BOOT_OFFSET + AP_BOOT_OFFSET |
| |
| jump_to_kernel: |
| 82,10 → 82,10 |
|---|
| movl %eax, %cr3 |
| |
| # Enable long mode |
| movl $EFER_MSR_NUM, %ecx # EFER MSR number |
| rdmsr # Read EFER |
| btsl $AMD_LME_FLAG, %eax # Set LME=1 |
| wrmsr # Write EFER |
| movl $EFER_MSR_NUM, %ecx # EFER MSR number |
| rdmsr # Read EFER |
| btsl $AMD_LME_FLAG, %eax # Set LME=1 |
| wrmsr # Write EFER |
| |
| # Enable paging to activate long mode (set CR0.PG=1) |
| movl %cr0, %eax |
| 107,7 → 107,6 |
|---|
| #ifdef CONFIG_SMP |
| |
| .global unmapped_ap_gdtr |
| |
| unmapped_ap_gdtr: |
| .word 0 |
| .long 0 |