Kernel: Initial HPET support

git-svn-id: svn://kolibrios.org@5787 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge) 2015-09-03 14:47:08 +00:00
parent 66c8eb59f3
commit 530a133818
4 changed files with 127 additions and 7 deletions

View File

@ -28,15 +28,15 @@ APIC_ISR equ 0x100
APIC_ESR equ 0x280
APIC_ICRL equ 0x300
APIC_ICRH equ 0x310
APIC_LVT_LINT0 equ 0x350
APIC_LVT_LINT1 equ 0x360
APIC_LVT_LINT0 equ 0x350
APIC_LVT_LINT1 equ 0x360
APIC_LVT_err equ 0x370
; APIC timer
APIC_LVT_timer equ 0x320
APIC_timer_div equ 0x3e0
APIC_timer_init equ 0x380
APIC_timer_cur equ 0x390
APIC_LVT_timer equ 0x320
APIC_timer_div equ 0x3e0
APIC_timer_init equ 0x380
APIC_timer_cur equ 0x390
; IOAPIC
IOAPIC_ID equ 0x0
IOAPIC_VER equ 0x1
@ -439,7 +439,38 @@ pci_irq_fixup:
pop ebp
ret
align 4
get_clock_ns:
mov eax, [hpet_base]
test eax, eax
jz .old_tics
push ebx
pushfd
cli
mov ebx, eax
@@:
mov edx, [ebx+0xF4]
mov eax, [ebx+0xF0]
mov ecx, [ebx+0xF4]
cmp ecx, edx
jnz @B
mov ecx, [hpet_period]
mov ebx, edx
imul ebx, ecx
mul ecx
add edx, ebx
popfd
pop ebx
ret
.old_tics:
mov eax, [timer_ticks]
mov edx, 10000000
mul edx
ret

View File

@ -75,6 +75,7 @@ __exports:
unmap_pages, 'UnmapPages', \ ; eax, ecx
sys_msg_board_str, 'SysMsgBoardStr', \
sys_msg_board, 'SysMsgBoard', \
get_clock_ns, 'GetClockNs', \ ;retval edx:eax 64-bit value
get_timer_ticks, 'GetTimerTicks', \
get_stack_base, 'GetStackBase', \
delay_hs, 'Delay', \ ; ebx

View File

@ -435,6 +435,10 @@ acpi_dsdt_base rd 1
acpi_dsdt_size rd 1
acpi_madt_base rd 1
acpi_ioapic_base rd 1
acpi_hpet_base rd 1
hpet_base rd 1
hpet_period rd 1
hpet_timers rd 1
cpu_count rd 1
smpt rd 16
@ -443,6 +447,8 @@ endg
ACPI_HI_RSDP_WINDOW_START equ 0x000E0000
ACPI_HI_RSDP_WINDOW_END equ 0x00100000
ACPI_RSDP_CHECKSUM_LENGTH equ 20
ACPI_HPET_SIGN equ 0x54455048
ACPI_MADT_SIGN equ 0x43495041
ACPI_FADT_SIGN equ 0x50434146
@ -516,7 +522,7 @@ check_acpi:
jz .done
mov ecx, [eax+16]
mov edx, 0x50434146
mov edx, ACPI_FADT_SIGN
mov [acpi_rsdt_base-OS_BASE], ecx
call rsdt_find
mov [acpi_fadt_base-OS_BASE], eax
@ -527,7 +533,16 @@ check_acpi:
mov [acpi_dsdt_base-OS_BASE], eax
mov eax, [eax+4]
mov [acpi_dsdt_size-OS_BASE], eax
@@:
mov edx, ACPI_HPET_SIGN
mov ecx, [acpi_rsdt_base-OS_BASE]
call rsdt_find
test eax, eax
jz @F
mov [acpi_hpet_base-OS_BASE], eax
mov eax, [eax+44]
mov [hpet_base-OS_BASE], eax
@@:
mov edx, ACPI_MADT_SIGN
mov ecx, [acpi_rsdt_base-OS_BASE]
@ -583,3 +598,58 @@ check_acpi:
mov eax, [edx+4]
mov [acpi_ioapic_base-OS_BASE], eax
jmp .next
HPET_PERIOD equ 0x0004
HPET_CFG_ENABLE equ 0x0001
HPET_CFG equ 0x0010
HPET_COUNTER equ 0x00f0
HPET_T0_CFG equ 0x0100
HPET_TN_LEVEL equ 0x0002
HPET_TN_ENABLE equ 0x0004
HPET_TN_FSB equ 0x4000
align 4
init_hpet:
mov ebx, [hpet_base-OS_BASE]
test ebx, ebx
jz @F
mov eax, [ebx]
and ah, 0x1F
inc ah
movzx eax, ah
mov [hpet_timers-OS_BASE], eax
mov ecx, eax
mov eax, [ebx+HPET_PERIOD]
mov edx, 0x431BDE83
mul edx
shr edx, 18
mov [hpet_period-OS_BASE], edx
mov esi, [ebx+HPET_CFG]
and esi, not HPET_CFG_ENABLE
mov [ebx+HPET_CFG], esi ;stop main counter
lea edx, [ebx+HPET_T0_CFG]
@@:
jcxz @F
mov eax, [edx]
and eax, not (HPET_TN_ENABLE+HPET_TN_LEVEL+HPET_TN_FSB)
mov [edx], eax
add edx, 0x20
dec ecx
jmp @B
@@:
mov [ebx+HPET_COUNTER], ecx ;reset main counter
mov [ebx+HPET_COUNTER+4], ecx
or esi, HPET_CFG_ENABLE
mov [ebx+HPET_CFG], esi ;and start again
@@:
ret

View File

@ -283,6 +283,7 @@ B32:
bts [cpu_caps-OS_BASE], CAPS_TSC ;force use rdtsc
call check_acpi
call init_hpet
call init_BIOS32
; MEMORY MODEL
call mem_test
@ -697,6 +698,23 @@ setvideomode:
@@:
mov [clipboard_main_list], eax
mov eax, [hpet_base]
test eax, eax
jz @F
DEBUGF 1, "K : HPET base %x\n", eax
mov eax, [hpet_period]
DEBUGF 1, "K : HPET period %d\n", eax
mov eax, [hpet_timers]
DEBUGF 1, "K : HPET timers %d\n", eax
mov eax, [hpet_base]
stdcall map_io_mem, [hpet_base], 1024, PG_GLOBAL+PAT_UC+PG_SWR
mov [hpet_base], eax
mov eax, [eax]
DEBUGF 1, "K : HPET caps %x\n", eax
@@:
; SET UP OS TASK
mov esi, boot_setostask