[coreboot-gerrit] Change in coreboot[master]: cpu/intel/cache_as_ram: Compute number var MTRR's
Arthur Heymans (Code Review)
gerrit at coreboot.org
Wed May 30 23:59:53 CEST 2018
Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/26712
Change subject: cpu/intel/cache_as_ram: Compute number var MTRR's
......................................................................
cpu/intel/cache_as_ram: Compute number var MTRR's
Compute the number of variable MTRR's during runtime.
Change-Id: Ia4afdacc2d12db5ea49eb7ae2b4f4295981a6d8b
Signed-off-by: Arthur Heymans <arthur at aheymans.xyz>
---
M src/cpu/intel/car/cache_as_ram_ht.inc
M src/cpu/intel/haswell/cache_as_ram.inc
M src/cpu/intel/model_206ax/cache_as_ram.inc
M src/cpu/intel/model_6ex/cache_as_ram.inc
4 files changed, 156 insertions(+), 97 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/26712/1
diff --git a/src/cpu/intel/car/cache_as_ram_ht.inc b/src/cpu/intel/car/cache_as_ram_ht.inc
index e716caf..1497169 100644
--- a/src/cpu/intel/car/cache_as_ram_ht.inc
+++ b/src/cpu/intel/car/cache_as_ram_ht.inc
@@ -39,21 +39,32 @@
andl $LAPIC_BASE_MSR_BOOTSTRAP_PROCESSOR, %eax
jz ap_init
- /* Zero out all fixed range and variable range MTRRs.
- * For hyper-threaded CPUs these are shared.
- */
- movl $mtrr_table, %esi
- movl $((mtrr_table_end - mtrr_table) >> 1), %edi
- xorl %eax, %eax
- xorl %edx, %edx
-clear_mtrrs:
- movw (%esi), %bx
- movzx %bx, %ecx
- wrmsr
- add $2, %esi
- dec %edi
- jnz clear_mtrrs
+ /* Clear/disable fixed MTRRs */
+ mov $fixed_mtrr_list_size, %ebx
+ xor %eax, %eax
+ xor %edx, %edx
+clear_fixed_mtrr:
+ add $-2, %ebx
+ movzwl fixed_mtrr_list(%ebx), %ecx
+ wrmsr
+ jnz clear_fixed_mtrr
+
+ /* Figure put how many MTRRs we have, and clear them out */
+ mov $MTRR_CAP_MSR, %ecx
+ rdmsr
+ movzb %al, %ebx /* Number of variable MTRRs */
+ mov $MTRR_PHYS_BASE(0), %ecx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_var_mtrr:
+ wrmsr
+ inc %ecx
+ wrmsr
+ inc %ecx
+ dec %ebx
+ jnz clear_var_mtrr
post_code(0x21)
/* Configure the default memory type to uncacheable. */
@@ -452,15 +463,16 @@
hlt
jmp .Lhlt
-mtrr_table:
- /* Fixed MTRRs */
- .word 0x250, 0x258, 0x259
- .word 0x268, 0x269, 0x26A
- .word 0x26B, 0x26C, 0x26D
- .word 0x26E, 0x26F
- /* Variable MTRRs */
- .word 0x200, 0x201, 0x202, 0x203
- .word 0x204, 0x205, 0x206, 0x207
- .word 0x208, 0x209, 0x20A, 0x20B
- .word 0x20C, 0x20D, 0x20E, 0x20F
-mtrr_table_end:
+fixed_mtrr_list:
+ .word MTRR_FIX_64K_00000
+ .word MTRR_FIX_16K_80000
+ .word MTRR_FIX_16K_A0000
+ .word MTRR_FIX_4K_C0000
+ .word MTRR_FIX_4K_C8000
+ .word MTRR_FIX_4K_D0000
+ .word MTRR_FIX_4K_D8000
+ .word MTRR_FIX_4K_E0000
+ .word MTRR_FIX_4K_E8000
+ .word MTRR_FIX_4K_F0000
+ .word MTRR_FIX_4K_F8000
+fixed_mtrr_list_size = . - fixed_mtrr_list
\ No newline at end of file
diff --git a/src/cpu/intel/haswell/cache_as_ram.inc b/src/cpu/intel/haswell/cache_as_ram.inc
index 388c2ea..98bf3e3 100644
--- a/src/cpu/intel/haswell/cache_as_ram.inc
+++ b/src/cpu/intel/haswell/cache_as_ram.inc
@@ -52,18 +52,32 @@
jc wait_for_sipi
post_code(0x21)
- /* Zero out all fixed range and variable range MTRRs. */
- movl $mtrr_table, %esi
- movl $((mtrr_table_end - mtrr_table) >> 1), %edi
- xorl %eax, %eax
- xorl %edx, %edx
-clear_mtrrs:
- movw (%esi), %bx
- movzx %bx, %ecx
+ /* Clear/disable fixed MTRRs */
+ mov $fixed_mtrr_list_size, %ebx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_fixed_mtrr:
+ add $-2, %ebx
+ movzwl fixed_mtrr_list(%ebx), %ecx
wrmsr
- add $2, %esi
- dec %edi
- jnz clear_mtrrs
+ jnz clear_fixed_mtrr
+
+ /* Figure put how many MTRRs we have, and clear them out */
+ mov $MTRR_CAP_MSR, %ecx
+ rdmsr
+ movzb %al, %ebx /* Number of variable MTRRs */
+ mov $MTRR_PHYS_BASE(0), %ecx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_var_mtrr:
+ wrmsr
+ inc %ecx
+ wrmsr
+ inc %ecx
+ dec %ebx
+ jnz clear_var_mtrr
post_code(0x22)
/* Configure the default memory type to uncacheable. */
@@ -282,16 +296,16 @@
hlt
jmp .Lhlt
-mtrr_table:
- /* Fixed MTRRs */
- .word 0x250, 0x258, 0x259
- .word 0x268, 0x269, 0x26A
- .word 0x26B, 0x26C, 0x26D
- .word 0x26E, 0x26F
- /* Variable MTRRs */
- .word 0x200, 0x201, 0x202, 0x203
- .word 0x204, 0x205, 0x206, 0x207
- .word 0x208, 0x209, 0x20A, 0x20B
- .word 0x20C, 0x20D, 0x20E, 0x20F
- .word 0x210, 0x211, 0x212, 0x213
-mtrr_table_end:
+fixed_mtrr_list:
+ .word MTRR_FIX_64K_00000
+ .word MTRR_FIX_16K_80000
+ .word MTRR_FIX_16K_A0000
+ .word MTRR_FIX_4K_C0000
+ .word MTRR_FIX_4K_C8000
+ .word MTRR_FIX_4K_D0000
+ .word MTRR_FIX_4K_D8000
+ .word MTRR_FIX_4K_E0000
+ .word MTRR_FIX_4K_E8000
+ .word MTRR_FIX_4K_F0000
+ .word MTRR_FIX_4K_F8000
+fixed_mtrr_list_size = . - fixed_mtrr_list
\ No newline at end of file
diff --git a/src/cpu/intel/model_206ax/cache_as_ram.inc b/src/cpu/intel/model_206ax/cache_as_ram.inc
index d1678bf..92d2663 100644
--- a/src/cpu/intel/model_206ax/cache_as_ram.inc
+++ b/src/cpu/intel/model_206ax/cache_as_ram.inc
@@ -52,18 +52,33 @@
jc wait_for_sipi
post_code(0x21)
- /* Zero out all fixed range and variable range MTRRs. */
- movl $mtrr_table, %esi
- movl $((mtrr_table_end - mtrr_table) >> 1), %edi
- xorl %eax, %eax
- xorl %edx, %edx
-clear_mtrrs:
- movw (%esi), %bx
- movzx %bx, %ecx
+
+ /* Clear/disable fixed MTRRs */
+ mov $fixed_mtrr_list_size, %ebx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_fixed_mtrr:
+ add $-2, %ebx
+ movzwl fixed_mtrr_list(%ebx), %ecx
wrmsr
- add $2, %esi
- dec %edi
- jnz clear_mtrrs
+ jnz clear_fixed_mtrr
+
+ /* Figure put how many MTRRs we have, and clear them out */
+ mov $MTRR_CAP_MSR, %ecx
+ rdmsr
+ movzb %al, %ebx /* Number of variable MTRRs */
+ mov $MTRR_PHYS_BASE(0), %ecx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_var_mtrr:
+ wrmsr
+ inc %ecx
+ wrmsr
+ inc %ecx
+ dec %ebx
+ jnz clear_var_mtrr
post_code(0x22)
/* Configure the default memory type to uncacheable. */
@@ -300,16 +315,16 @@
hlt
jmp .Lhlt
-mtrr_table:
- /* Fixed MTRRs */
- .word 0x250, 0x258, 0x259
- .word 0x268, 0x269, 0x26A
- .word 0x26B, 0x26C, 0x26D
- .word 0x26E, 0x26F
- /* Variable MTRRs */
- .word 0x200, 0x201, 0x202, 0x203
- .word 0x204, 0x205, 0x206, 0x207
- .word 0x208, 0x209, 0x20A, 0x20B
- .word 0x20C, 0x20D, 0x20E, 0x20F
- .word 0x210, 0x211, 0x212, 0x213
-mtrr_table_end:
+fixed_mtrr_list:
+ .word MTRR_FIX_64K_00000
+ .word MTRR_FIX_16K_80000
+ .word MTRR_FIX_16K_A0000
+ .word MTRR_FIX_4K_C0000
+ .word MTRR_FIX_4K_C8000
+ .word MTRR_FIX_4K_D0000
+ .word MTRR_FIX_4K_D8000
+ .word MTRR_FIX_4K_E0000
+ .word MTRR_FIX_4K_E8000
+ .word MTRR_FIX_4K_F0000
+ .word MTRR_FIX_4K_F8000
+fixed_mtrr_list_size = . - fixed_mtrr_list
\ No newline at end of file
diff --git a/src/cpu/intel/model_6ex/cache_as_ram.inc b/src/cpu/intel/model_6ex/cache_as_ram.inc
index 4b85c07..3f048a5 100644
--- a/src/cpu/intel/model_6ex/cache_as_ram.inc
+++ b/src/cpu/intel/model_6ex/cache_as_ram.inc
@@ -34,18 +34,35 @@
movl $0xFEE00300, %esi
movl %eax, (%esi)
- /* Zero out all fixed range and variable range MTRRs. */
- movl $mtrr_table, %esi
- movl $((mtrr_table_end - mtrr_table) >> 1), %edi
- xorl %eax, %eax
- xorl %edx, %edx
-clear_mtrrs:
- movw (%esi), %bx
- movzx %bx, %ecx
+ post_code(0x21)
+
+ /* Clear/disable fixed MTRRs */
+ mov $fixed_mtrr_list_size, %ebx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_fixed_mtrr:
+ add $-2, %ebx
+ movzwl fixed_mtrr_list(%ebx), %ecx
wrmsr
- add $2, %esi
- dec %edi
- jnz clear_mtrrs
+ jnz clear_fixed_mtrr
+
+ /* Figure put how many MTRRs we have, and clear them out */
+ mov $MTRR_CAP_MSR, %ecx
+ rdmsr
+ movzb %al, %ebx /* Number of variable MTRRs */
+ mov $MTRR_PHYS_BASE(0), %ecx
+ xor %eax, %eax
+ xor %edx, %edx
+
+clear_var_mtrr:
+ wrmsr
+ inc %ecx
+ wrmsr
+ inc %ecx
+ dec %ebx
+ jnz clear_var_mtrr
+ post_code(0x21)
post_code(0x22)
/* Configure the default memory type to uncacheable. */
@@ -253,15 +270,16 @@
hlt
jmp .Lhlt
-mtrr_table:
- /* Fixed MTRRs */
- .word 0x250, 0x258, 0x259
- .word 0x268, 0x269, 0x26A
- .word 0x26B, 0x26C, 0x26D
- .word 0x26E, 0x26F
- /* Variable MTRRs */
- .word 0x200, 0x201, 0x202, 0x203
- .word 0x204, 0x205, 0x206, 0x207
- .word 0x208, 0x209, 0x20A, 0x20B
- .word 0x20C, 0x20D, 0x20E, 0x20F
-mtrr_table_end:
+fixed_mtrr_list:
+ .word MTRR_FIX_64K_00000
+ .word MTRR_FIX_16K_80000
+ .word MTRR_FIX_16K_A0000
+ .word MTRR_FIX_4K_C0000
+ .word MTRR_FIX_4K_C8000
+ .word MTRR_FIX_4K_D0000
+ .word MTRR_FIX_4K_D8000
+ .word MTRR_FIX_4K_E0000
+ .word MTRR_FIX_4K_E8000
+ .word MTRR_FIX_4K_F0000
+ .word MTRR_FIX_4K_F8000
+fixed_mtrr_list_size = . - fixed_mtrr_list
\ No newline at end of file
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ia4afdacc2d12db5ea49eb7ae2b4f4295981a6d8b
Gerrit-Change-Number: 26712
Gerrit-PatchSet: 1
Gerrit-Owner: Arthur Heymans <arthur at aheymans.xyz>
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