diff --git a/kernel/branches/Kolibri-acpi/core/apic.inc b/kernel/branches/Kolibri-acpi/core/apic.inc index 4419a7e53..ef7b72105 100644 --- a/kernel/branches/Kolibri-acpi/core/apic.inc +++ b/kernel/branches/Kolibri-acpi/core/apic.inc @@ -439,7 +439,27 @@ pci_irq_fixup: pop ebp ret +align 4 +get_clock_ns: + push ebx + pushfd + cli + mov ebx, [hpet_base] +@@: + 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 diff --git a/kernel/branches/Kolibri-acpi/core/exports.inc b/kernel/branches/Kolibri-acpi/core/exports.inc index 62d70f4a1..a4b3a1423 100644 --- a/kernel/branches/Kolibri-acpi/core/exports.inc +++ b/kernel/branches/Kolibri-acpi/core/exports.inc @@ -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 diff --git a/kernel/branches/Kolibri-acpi/init.inc b/kernel/branches/Kolibri-acpi/init.inc index 263a20b27..9941c8e5a 100644 --- a/kernel/branches/Kolibri-acpi/init.inc +++ b/kernel/branches/Kolibri-acpi/init.inc @@ -435,6 +435,9 @@ 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 cpu_count rd 1 smpt rd 16 @@ -443,6 +446,8 @@ 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 +521,7 @@ 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 +532,16 @@ 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 +597,33 @@ check_acpi: mov eax, [edx+4] mov [acpi_ioapic_base-OS_BASE], eax jmp .next + +HPET_PERIOD equ 0x004 +HPET_CFG_ENABLE equ 1 +HPET_CFG equ 0x010 + +align 4 +init_hpet: + mov ebx, [hpet_base-OS_BASE] + + mov eax, [ebx+HPET_PERIOD] + mov edx, 0x431BDE83 + mul edx + shr edx, 18 + mov [hpet_period-OS_BASE], edx + + mov eax, [ebx+HPET_CFG] + and eax, not HPET_CFG_ENABLE + mov [ebx+HPET_CFG], eax ;stop main counter + + xor ecx, ecx + mov [ebx+0xF0], ecx ;reset counter + mov [ebx+0xF4], ecx + + or eax, HPET_CFG_ENABLE + mov [ebx+HPET_CFG], eax ;and start again + ret + + + + diff --git a/kernel/branches/Kolibri-acpi/kernel.asm b/kernel/branches/Kolibri-acpi/kernel.asm index adef893d5..e0f713083 100644 --- a/kernel/branches/Kolibri-acpi/kernel.asm +++ b/kernel/branches/Kolibri-acpi/kernel.asm @@ -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 +698,17 @@ setvideomode: @@: mov [clipboard_main_list], eax + mov eax, [acpi_hpet_base] + DEBUGF 1, "K : ACPI HPET base %x\n", eax + mov eax, [hpet_base] + DEBUGF 1, "K : HPET base %x\n", eax + mov eax, [hpet_period] + DEBUGF 1, "K : HPET period %d\n", eax + + mov eax, [hpet_base] + stdcall map_io_mem, [hpet_base], 1024, PG_GLOBAL+PAT_UC+PG_SWR + mov [hpet_base], eax + ; SET UP OS TASK mov esi, boot_setostask