| /* |
| * LinuxBIOS ACPI Table support |
| * written by Stefan Reinauer <stepan@openbios.org> |
| * (C) 2004 SUSE LINUX AG |
| * (C) 2005 Stefan Reinauer |
| * |
| * ACPI FADT, FACS, and DSDT table support added by |
| * Nick Barker <nick.barker9@btinternet.com>, and those portions |
| * (C) Copyright 2004 Nick Barker |
| */ |
| |
| /* |
| * Each system port implementing ACPI has to provide two functions: |
| * |
| * write_acpi_tables() |
| * acpi_dump_apics() |
| * |
| * See Solo or Epia port on more details. |
| */ |
| |
| #include <console/console.h> |
| #include <string.h> |
| #include <arch/acpi.h> |
| #include <device/pci.h> |
| |
| u8 acpi_checksum(u8 *table, u32 length) |
| { |
| u8 ret=0; |
| while (length--) { |
| ret += *table; |
| table++; |
| } |
| return -ret; |
| } |
| |
| /* |
| * add an acpi table to rsdt structure, and recalculate checksum |
| */ |
| |
| void acpi_add_table(acpi_rsdt_t *rsdt, void *table) |
| { |
| int i; |
| |
| for (i=0; i<8; i++) { |
| if(rsdt->entry[i]==0) { |
| rsdt->entry[i]=(u32)table; |
| /* fix length to stop kernel winging about invalid entries */ |
| rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1)); |
| /* fix checksum */ |
| /* hope this won't get optimized away */ |
| rsdt->header.checksum=0; |
| rsdt->header.checksum=acpi_checksum((u8 *)rsdt, |
| rsdt->header.length); |
| |
| printk_debug("ACPI: added table %d/8 Length now %d\n",i+1,rsdt->header.length); |
| return; |
| } |
| } |
| |
| printk_warning("ACPI: could not add ACPI table to RSDT. failed.\n"); |
| } |
| |
| |
| int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic) |
| { |
| lapic->type=0; |
| lapic->length=sizeof(acpi_madt_lapic_t); |
| lapic->flags=1; |
| |
| lapic->processor_id=cpu; |
| lapic->apic_id=apic; |
| |
| return(lapic->length); |
| } |
| |
| int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base) |
| { |
| ioapic->type=1; |
| ioapic->length=sizeof(acpi_madt_ioapic_t); |
| ioapic->reserved=0x00; |
| ioapic->gsi_base=gsi_base; |
| |
| ioapic->ioapic_id=id; |
| ioapic->ioapic_addr=addr; |
| |
| return(ioapic->length); |
| } |
| |
| int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride, |
| u8 bus, u8 source, u32 gsirq, u16 flags) |
| { |
| irqoverride->type=2; |
| irqoverride->length=sizeof(acpi_madt_irqoverride_t); |
| irqoverride->bus=bus; |
| irqoverride->source=source; |
| irqoverride->gsirq=gsirq; |
| irqoverride->flags=flags; |
| |
| return(irqoverride->length); |
| } |
| |
| int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu, |
| u16 flags, u8 lint) |
| { |
| lapic_nmi->type=4; |
| lapic_nmi->length=sizeof(acpi_madt_lapic_nmi_t); |
| |
| lapic_nmi->flags=flags; |
| lapic_nmi->processor_id=cpu; |
| lapic_nmi->lint=lint; |
| |
| return(lapic_nmi->length); |
| } |
| |
| void acpi_create_madt(acpi_madt_t *madt) |
| { |
| #define LOCAL_APIC_ADDR 0xfee00000ULL |
| |
| acpi_header_t *header=&(madt->header); |
| unsigned long current=(unsigned long)madt+sizeof(acpi_madt_t); |
| |
| memset((void *)madt, 0, sizeof(acpi_madt_t)); |
| |
| /* fill out header fields */ |
| memcpy(header->signature, MADT_NAME, 4); |
| memcpy(header->oem_id, OEM_ID, 6); |
| memcpy(header->oem_table_id, MADT_TABLE, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| header->length = sizeof(acpi_madt_t); |
| header->revision = 1; |
| |
| madt->lapic_addr= LOCAL_APIC_ADDR; |
| madt->flags = 0x1; /* PCAT_COMPAT */ |
| |
| current = acpi_dump_apics(current); |
| |
| /* recalculate length */ |
| header->length= current - (unsigned long)madt; |
| |
| header->checksum = acpi_checksum((void *)madt, header->length); |
| } |
| |
| void acpi_create_hpet(acpi_hpet_t *hpet) |
| { |
| #define HPET_ADDR 0xfed00000ULL |
| acpi_header_t *header=&(hpet->header); |
| acpi_addr_t *addr=&(hpet->addr); |
| |
| memset((void *)hpet, 0, sizeof(acpi_hpet_t)); |
| |
| /* fill out header fields */ |
| memcpy(header->signature, HPET_NAME, 4); |
| memcpy(header->oem_id, OEM_ID, 6); |
| memcpy(header->oem_table_id, HPET_TABLE, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| header->length = sizeof(acpi_hpet_t); |
| header->revision = 1; |
| |
| /* fill out HPET address */ |
| addr->space_id = 0; /* Memory */ |
| addr->bit_width = 64; |
| addr->bit_offset = 0; |
| addr->addrl = HPET_ADDR & 0xffffffff; |
| addr->addrh = HPET_ADDR >> 32; |
| |
| hpet->id = 0x102282a0; /* AMD ? */ |
| hpet->number = 0; |
| hpet->min_tick = 4096; |
| |
| header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t)); |
| } |
| |
| void acpi_create_facs(acpi_facs_t *facs) |
| { |
| memset( (void *)facs,0, sizeof(acpi_facs_t)); |
| |
| memcpy(facs->signature,"FACS",4); |
| facs->length = sizeof(acpi_facs_t); |
| facs->hardware_signature = 0; |
| facs->firmware_waking_vector = 0; |
| facs->global_lock = 0; |
| facs->flags = 0; |
| facs->x_firmware_waking_vector_l = 0; |
| facs->x_firmware_waking_vector_h = 0; |
| facs->version = 1; |
| } |
| |
| void acpi_write_rsdt(acpi_rsdt_t *rsdt) |
| { |
| acpi_header_t *header=&(rsdt->header); |
| |
| /* fill out header fields */ |
| memcpy(header->signature, RSDT_NAME, 4); |
| memcpy(header->oem_id, OEM_ID, 6); |
| memcpy(header->oem_table_id, RSDT_TABLE, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| header->length = sizeof(acpi_rsdt_t); |
| header->revision = 1; |
| |
| /* fill out entries */ |
| |
| // entries are filled in later, we come with an empty set. |
| |
| /* fix checksum */ |
| |
| header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t)); |
| } |
| |
| void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt) |
| { |
| memcpy(rsdp->signature, RSDP_SIG, 8); |
| memcpy(rsdp->oem_id, OEM_ID, 6); |
| |
| rsdp->length = sizeof(acpi_rsdp_t); |
| rsdp->rsdt_address = (u32)rsdt; |
| rsdp->checksum = acpi_checksum((void *)rsdp, 20); |
| rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t)); |
| } |
| |
| |