diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vendorcode/amd/agesa/f10/gcccar.inc | 29 | ||||
| -rw-r--r-- | src/vendorcode/amd/agesa/f15/gcccar.inc | 46 | ||||
| -rw-r--r-- | src/vendorcode/amd/agesa/f15tn/gcccar.inc | 29 | ||||
| -rw-r--r-- | src/vendorcode/amd/agesa/f16kb/gcccar.inc | 29 |
4 files changed, 118 insertions, 15 deletions
diff --git a/src/vendorcode/amd/agesa/f10/gcccar.inc b/src/vendorcode/amd/agesa/f10/gcccar.inc index 88fa79d2ea..c490a61d58 100644 --- a/src/vendorcode/amd/agesa/f10/gcccar.inc +++ b/src/vendorcode/amd/agesa/f10/gcccar.inc @@ -360,6 +360,13 @@ fam10_enable_stack_hook_exit: * Return any family specific controls to their 'standard' * settings for using cache with main memory. * +* Note: Customized for coreboot: +* A wbinvd is used to send cache to memory. The existing stack is preserved +* at its original location and additional information is preserved (e.g. +* coreboot CAR globals, heap structures, etc.). This implementation should +* NOT be used with S3 resume IF the stack/cache area is not reserved and +* over system memory. +* * Inputs: * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# * Outputs: @@ -419,7 +426,14 @@ fam10_enable_stack_hook_exit: mov %ax, %bx # Save INVD -> WBINVD bit btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion for the invd instruction. _WRMSR - wbinvd # Clear the cache tag RAMs + + #-------------------------------------------------------------------------- + # Send cache to memory. Preserve stack and coreboot CAR globals. + # This shouldn't be used with S3 resume IF the stack/cache area is + # not reserved and over system memory. + #-------------------------------------------------------------------------- + wbinvd + mov %bx, %ax # Restore INVD -> WBINVD bit _WRMSR @@ -1581,8 +1595,17 @@ ClearTheStack: # Stack base is in SS, stack pointer is .endm /***************************************************************************** -* AMD_DISABLE_STACK: Destroy the stack inside the cache. This routine -* should only be executed on the BSP +* AMD_DISABLE_STACK: Implementation is modified for coreboot from +* the original AMD intent. A WBINVD is used in the HOOK +* to send dirty cache contents to DRAM backing before +* disabling cache-as-ram. This is not safe for S3 resume. +* +* todo: +* * rework PI/AGESA source to set DRAM to UC to send +* writes directly to memory +* * move DCACHE_BASE or use postcar stage for teardown +* to eliminate car_migrated problem that will occur +* after wbinvd is changed back to invd * * In: * none diff --git a/src/vendorcode/amd/agesa/f15/gcccar.inc b/src/vendorcode/amd/agesa/f15/gcccar.inc index 9d566f2f1b..4d00df392d 100644 --- a/src/vendorcode/amd/agesa/f15/gcccar.inc +++ b/src/vendorcode/amd/agesa/f15/gcccar.inc @@ -361,6 +361,13 @@ fam10_enable_stack_hook_exit: * Return any family specific controls to their 'standard' * settings for using cache with main memory. * +* Note: Customized for coreboot: +* A wbinvd is used to send cache to memory. The existing stack is preserved +* at its original location and additional information is preserved (e.g. +* coreboot CAR globals, heap structures, etc.). This implementation should +* NOT be used with S3 resume IF the stack/cache area is not reserved and +* over system memory. +* * Inputs: * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# * Outputs: @@ -420,7 +427,14 @@ fam10_enable_stack_hook_exit: mov %ax, %bx # Save INVD -> WBINVD bit btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion for the invd instruction. _WRMSR - wbinvd # Clear the cache tag RAMs + + #-------------------------------------------------------------------------- + # Send cache to memory. Preserve stack and coreboot CAR globals. + # This shouldn't be used with S3 resume IF the stack/cache area is + # not reserved and over system memory. + #-------------------------------------------------------------------------- + wbinvd + mov %bx, %ax # Restore INVD -> WBINVD bit _WRMSR @@ -939,6 +953,13 @@ fam15_enable_stack_hook_exit: * Return any family specific controls to their 'standard' * settings for using cache with main memory. * +* Note: Customized for coreboot: +* A wbinvd is used to send cache to memory. The existing stack is preserved +* at its original location and additional information is preserved (e.g. +* coreboot CAR globals, heap structures, etc.). This implementation should +* NOT be used with S3 resume IF the stack/cache area is not reserved and +* over system memory. +* * Inputs: * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# * Outputs: @@ -997,7 +1018,14 @@ fam15_enable_stack_hook_exit: _RDMSR btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion _WRMSR - wbinvd # Clear the cache tag RAMs + + #-------------------------------------------------------------------------- + # Send cache to memory. Preserve stack and coreboot CAR globals. + # This shouldn't be used with S3 resume IF the stack/cache area is + # not reserved and over system memory. + #-------------------------------------------------------------------------- + wbinvd + bts $INVD_WBINVD, %eax # Turn on Conversion of INVD to WBINVD _WRMSR #.endif # end @@ -1582,8 +1610,17 @@ ClearTheStack: # Stack base is in SS, stack pointer is .endm /***************************************************************************** -* AMD_DISABLE_STACK: Destroy the stack inside the cache. This routine -* should only be executed on the BSP +* AMD_DISABLE_STACK: Implementation is modified for coreboot from +* the original AMD intent. A WBINVD is used in the HOOK +* to send dirty cache contents to DRAM backing before +* disabling cache-as-ram. This is not safe for S3 resume. +* +* todo: +* * rework PI/AGESA source to set DRAM to UC to send +* writes directly to memory +* * move DCACHE_BASE or use postcar stage for teardown +* to eliminate car_migrated problem that will occur +* after wbinvd is changed back to invd * * In: * none @@ -1629,4 +1666,3 @@ ClearTheStack: # Stack base is in SS, stack pointer is xor %eax, %eax .endm - diff --git a/src/vendorcode/amd/agesa/f15tn/gcccar.inc b/src/vendorcode/amd/agesa/f15tn/gcccar.inc index 330570e3e9..4f1e7a0b25 100644 --- a/src/vendorcode/amd/agesa/f15tn/gcccar.inc +++ b/src/vendorcode/amd/agesa/f15tn/gcccar.inc @@ -1033,6 +1033,13 @@ fam15_enable_stack_hook_exit: * Return any family specific controls to their 'standard' * settings for using cache with main memory. * +* Note: Customized for coreboot: +* A wbinvd is used to send cache to memory. The existing stack is preserved +* at its original location and additional information is preserved (e.g. +* coreboot CAR globals, heap structures, etc.). This implementation should +* NOT be used with S3 resume IF the stack/cache area is not reserved and +* over system memory. +* * Inputs: * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# * Outputs: @@ -1250,7 +1257,14 @@ fam15_disable_stack_remote_read_exit: _RDMSR btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion _WRMSR - wbinvd # Clear the cache tag RAMs + + #-------------------------------------------------------------------------- + # Send cache to memory. Preserve stack and coreboot CAR globals. + # This shouldn't be used with S3 resume IF the stack/cache area is + # not reserved and over system memory. + #-------------------------------------------------------------------------- + wbinvd + #.if (bh == 01h) || (bh == 03h) ; Is this TN or KM? cmp $01, %bh jz 4f @@ -1891,8 +1905,17 @@ ClearTheStack: # Stack base is in SS, stack pointer is .endm /***************************************************************************** -* AMD_DISABLE_STACK: Destroy the stack inside the cache. This routine -* should only be executed on the BSP +* AMD_DISABLE_STACK: Implementation is modified for coreboot from +* the original AMD intent. A WBINVD is used in the HOOK +* to send dirty cache contents to DRAM backing before +* disabling cache-as-ram. This is not safe for S3 resume. +* +* todo: +* * rework PI/AGESA source to set DRAM to UC to send +* writes directly to memory +* * move DCACHE_BASE or use postcar stage for teardown +* to eliminate car_migrated problem that will occur +* after wbinvd is changed back to invd * * In: * none diff --git a/src/vendorcode/amd/agesa/f16kb/gcccar.inc b/src/vendorcode/amd/agesa/f16kb/gcccar.inc index 592ee6d00e..bd670590a7 100644 --- a/src/vendorcode/amd/agesa/f16kb/gcccar.inc +++ b/src/vendorcode/amd/agesa/f16kb/gcccar.inc @@ -269,6 +269,13 @@ MSR_MASK = ((1 << MTRR_DEF_TYPE_EN)+(1 << MTRR_DEF_TYPE_FIX_EN)) * Read family specific values to determine the node and core * numbers for the core executing this code. * +* Note: Customized for coreboot: +* A wbinvd is used to send cache to memory. The existing stack is preserved +* at its original location and additional information is preserved (e.g. +* coreboot CAR globals, heap structures, etc.). This implementation should +* NOT be used with S3 resume IF the stack/cache area is not reserved and +* over system memory. +* * Inputs: * none * Outputs: @@ -602,8 +609,13 @@ fam16_disable_stack_remote_read_exit: _RDMSR btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion _WRMSR - wbinvd # Clear the cache tag RAMs - #invd + + #-------------------------------------------------------------------------- + # Send cache to memory. Preserve stack and coreboot CAR globals. + # This shouldn't be used with S3 resume IF the stack/cache area is + # not reserved and over system memory. + #-------------------------------------------------------------------------- + wbinvd #Do Standard Family 16 work mov $HWCR, %ecx # MSR:C001_0015h @@ -1256,8 +1268,17 @@ ClearTheStack: # Stack base is in SS, stack pointer is .endm /***************************************************************************** -* AMD_DISABLE_STACK: Destroy the stack inside the cache. This routine -* should only be executed on the BSP +* AMD_DISABLE_STACK: Implementation is modified for coreboot from +* the original AMD intent. A WBINVD is used in the HOOK +* to send dirty cache contents to DRAM backing before +* disabling cache-as-ram. This is not safe for S3 resume. +* +* todo: +* * rework PI/AGESA source to set DRAM to UC to send +* writes directly to memory +* * move DCACHE_BASE or use postcar stage for teardown +* to eliminate car_migrated problem that will occur +* after wbinvd is changed back to invd * * In: * none |