26,8 → 26,22 |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
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#include <arch/register.h> |
#include <arch/mm/page.h> |
#include <arch/mm/asid.h> |
#include <mm/asid.h> |
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#define RR_MASK (0xFFFFFFFF00000002) |
#define RID_SHIFT 8 |
#define PS_SHIFT 2 |
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#define KERNEL_TRANSLATION_I 0x0010000000000661 |
#define KERNEL_TRANSLATION_D 0x0010000000000661 |
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.section K_TEXT_START |
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.global kernel_image_start |
36,12 → 50,82 |
kernel_image_start: |
.auto |
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#Fill TR.i and TR.d and enable paging |
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mov r9=rr[r0] |
movl r10=(RR_MASK) |
and r9=r10,r9 |
movl r10=((ASID2RID(ASID_KERNEL,VRN_KERNEL)<<RID_SHIFT)|(KERNEL_PAGE_WIDTH<<PS_SHIFT)) |
or r9=r10,r9 |
mov rr[r0]=r9 |
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movl r8=(VRN_KERNEL<<VRN_SHIFT) |
mov r9=rr[r8] |
movl r10=(RR_MASK) |
and r9=r10,r9 |
movl r10=((ASID2RID(ASID_KERNEL,VRN_KERNEL)<<RID_SHIFT)|(KERNEL_PAGE_WIDTH<<PS_SHIFT)) |
or r9=r10,r9 |
mov rr[r8]=r9 |
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movl r8=(VRN_KERNEL<<VRN_SHIFT) |
mov cr.ifa=r8 |
movl r10=(KERNEL_PAGE_WIDTH<<PS_SHIFT) |
mov cr.itir=r10 |
movl r10=(KERNEL_TRANSLATION_I) |
itr.i itr[r0]=r10 |
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# mov cr.ifa=r0 |
# movl r10=(KERNEL_PAGE_WIDTH<<PS_SHIFT) |
# mov cr.itir=r10 |
movl r10=(KERNEL_TRANSLATION_D) |
itr.d dtr[r0]=r10 |
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# initialize PSR |
mov psr.l = r0 |
srlz.i |
srlz.d |
ssm PSR_IC_MASK |
movl r10=(PSR_DT_MASK|PSR_RT_MASK|PSR_IT_MASK|PSR_IC_MASK) /*Enable paging*/ |
mov r9=psr |
or r10=r10,r9 |
mov cr.ipsr=r10 |
mov cr.ifs=r0 |
# movl r8=(paging_start+VRN_KERNEL<<VRN_SHIFT) |
movl r8=paging_start |
mov cr.iip=r8 |
srlz.d |
srlz.i |
.explicit |
{rfi;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
{nop 0;;} |
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.global paging_start |
paging_start: |
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.auto |
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# switch to register bank 1 |
bsw.1 |
48,18 → 132,23 |
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# initialize register stack |
mov ar.rsc = r0 |
mov ar.bspstore = r0 |
movl r8=(VRN_KERNEL<<VRN_SHIFT) |
mov ar.bspstore = r8 |
# mov ar.bspstore = r0 |
loadrs |
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.explicit |
# initialize memory stack to some sane value |
movl r12 = stack0 ;; |
# movl r12 = stack0 ;; |
movl r12 = stack0 + (VRN_KERNEL<<VRN_SHIFT);; |
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add r12 = - 16, r12 /* allocate a scratch area on the stack */ |
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# initialize gp (Global Pointer) register |
movl r1 = _hardcoded_load_address |
movl r1 = _hardcoded_load_address ;; |
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# movl r1 = _hardcoded_load_address + (VRN_KERNEL<<VRN_SHIFT) ;; |
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;; |
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# |
# Initialize hardcoded_* variables. |
71,11 → 160,18 |
addl r18 = @gprel(hardcoded_kdata_size), gp |
addl r19 = @gprel(hardcoded_load_address), gp |
;; |
st8 [r17] = r14 |
st8 [r18] = r15 |
st4 [r17] = r14 |
st4 [r18] = r15 |
st8 [r19] = r16 |
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.auto |
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br.call.sptk.many b0=main_bsp |
movl r18=main_bsp |
mov b1=r18 |
br.call.sptk.many b0=b1 |
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# br.call.sptk.many b0=main_bsp |
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0: |
br 0b |