Cosmetic fixes and comment additions in acpi.c.
- Fix whitespace, coding style, and indentation in some places. - Add comments for less obvious entries and hardcoded numbers (e.g. 'type'). - Add comments for all/most 'revision' fields, mention in which version of the ACPI spec which revision number is to be used. - Add URLs to a few external documents which describe tables that are not mentioned in the ACPI spec (or where the external document may provide further info), e.g. SRAT, SLIT, HPET, MCFG, etc. - Use the ASLC #define instead of hardcoding "CORE" in one instance (ASLC is already used everywhere else). - Add some TODOs for additional stuff which is in the spec but not yet handled by our code / #defines. Abuild-tested. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6098 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Uwe Hermann
parent
e882630d47
commit
622824cadb
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@ -34,7 +34,7 @@
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u8 acpi_checksum(u8 *table, u32 length)
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{
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u8 ret=0;
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u8 ret = 0;
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while (length--) {
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ret += *table;
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table++;
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@ -43,88 +43,89 @@ u8 acpi_checksum(u8 *table, u32 length)
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}
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/**
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* Add an ACPI table to the RSDT (and XSDT) structure, recalculate length and checksum
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* Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
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* and checksum.
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*/
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void acpi_add_table(acpi_rsdp_t *rsdp, void *table)
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{
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int i, entries_num;
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acpi_rsdt_t *rsdt;
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acpi_xsdt_t *xsdt = NULL;
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/* The RSDT is mandatory ... */
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/* The RSDT is mandatory... */
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rsdt = (acpi_rsdt_t *)rsdp->rsdt_address;
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/* ... while the XSDT is not */
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if (rsdp->xsdt_address) {
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/* ...while the XSDT is not. */
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if (rsdp->xsdt_address)
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xsdt = (acpi_xsdt_t *)((u32)rsdp->xsdt_address);
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}
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/* This should always be MAX_ACPI_TABLES */
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/* This should always be MAX_ACPI_TABLES. */
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entries_num = ARRAY_SIZE(rsdt->entry);
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for (i = 0; i < entries_num; i++) {
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if(rsdt->entry[i] == 0)
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if (rsdt->entry[i] == 0)
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break;
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}
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if (i >= entries_num) {
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printk(BIOS_ERR, "ACPI: Error: Could not add ACPI table, too many tables.\n");
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printk(BIOS_ERR, "ACPI: Error: Could not add ACPI table, "
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"too many tables.\n");
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return;
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}
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/* Add table to the RSDT */
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/* Add table to the RSDT. */
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rsdt->entry[i] = (u32)table;
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/* Fix RSDT length or the kernel will assume invalid entries */
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rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
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/* Fix RSDT length or the kernel will assume invalid entries. */
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rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i + 1));
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/* Re-calculate checksum */
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/* Re-calculate checksum. */
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rsdt->header.checksum = 0; /* Hope this won't get optimized away */
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rsdt->header.checksum = acpi_checksum((u8 *)rsdt,
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rsdt->header.length);
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rsdt->header.checksum = acpi_checksum((u8 *)rsdt, rsdt->header.length);
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/* And now the same thing for the XSDT. We use the same index as for
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/*
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* And now the same thing for the XSDT. We use the same index as for
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* now we want the XSDT and RSDT to always be in sync in coreboot.
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*/
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if (xsdt) {
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/* Add table to the XSDT */
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xsdt->entry[i]=(u64)(u32)table;
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/* Add table to the XSDT. */
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xsdt->entry[i] = (u64)(u32)table;
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/* Fix XSDT length */
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/* Fix XSDT length. */
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xsdt->header.length = sizeof(acpi_header_t) +
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(sizeof(u64) * (i+1));
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(sizeof(u64) * (i + 1));
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/* Re-calculate checksum */
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xsdt->header.checksum=0;
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xsdt->header.checksum=acpi_checksum((u8 *)xsdt,
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xsdt->header.length);
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/* Re-calculate checksum. */
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xsdt->header.checksum = 0;
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xsdt->header.checksum = acpi_checksum((u8 *)xsdt,
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xsdt->header.length);
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}
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printk(BIOS_DEBUG, "ACPI: added table %d/%d Length now %d\n",
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i+1, entries_num, rsdt->header.length);
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printk(BIOS_DEBUG, "ACPI: added table %d/%d, length now %d\n",
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i + 1, entries_num, rsdt->header.length);
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}
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int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end)
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int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base,
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u16 seg_nr, u8 start, u8 end)
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{
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mmconfig->base_address = base;
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mmconfig->base_reserved = 0;
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mmconfig->pci_segment_group_number = seg_nr;
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mmconfig->start_bus_number = start;
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mmconfig->end_bus_number = end;
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return (sizeof(acpi_mcfg_mmconfig_t));
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return sizeof(acpi_mcfg_mmconfig_t);
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}
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int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
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{
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lapic->type=0;
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lapic->length=sizeof(acpi_madt_lapic_t);
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lapic->flags=1;
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lapic->type = 0; /* Local APIC structure */
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lapic->length = sizeof(acpi_madt_lapic_t);
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lapic->flags = (1 << 0); /* Processor/LAPIC enabled */
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lapic->processor_id = cpu;
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lapic->apic_id = apic;
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lapic->processor_id=cpu;
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lapic->apic_id=apic;
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return(lapic->length);
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return lapic->length;
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}
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unsigned long acpi_create_madt_lapics(unsigned long current)
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@ -132,97 +133,97 @@ unsigned long acpi_create_madt_lapics(unsigned long current)
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device_t cpu;
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int cpu_index = 0;
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for(cpu = all_devices; cpu; cpu = cpu->next) {
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for (cpu = all_devices; cpu; cpu = cpu->next) {
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if ((cpu->path.type != DEVICE_PATH_APIC) ||
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(cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
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continue;
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}
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if (!cpu->enabled) {
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if (!cpu->enabled)
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continue;
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}
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current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id);
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current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current,
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cpu_index, cpu->path.apic.apic_id);
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cpu_index++;
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}
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return current;
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}
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int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base)
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int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,
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u32 gsi_base)
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{
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ioapic->type=1;
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ioapic->length=sizeof(acpi_madt_ioapic_t);
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ioapic->reserved=0x00;
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ioapic->gsi_base=gsi_base;
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ioapic->type = 1; /* I/O APIC structure */
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ioapic->length = sizeof(acpi_madt_ioapic_t);
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ioapic->reserved = 0x00;
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ioapic->gsi_base = gsi_base;
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ioapic->ioapic_id = id;
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ioapic->ioapic_addr = addr;
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ioapic->ioapic_id=id;
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ioapic->ioapic_addr=addr;
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return(ioapic->length);
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return ioapic->length;
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}
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int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride,
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u8 bus, u8 source, u32 gsirq, u16 flags)
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{
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irqoverride->type=2;
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irqoverride->length=sizeof(acpi_madt_irqoverride_t);
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irqoverride->bus=bus;
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irqoverride->source=source;
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irqoverride->gsirq=gsirq;
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irqoverride->flags=flags;
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irqoverride->type = 2; /* Interrupt source override */
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irqoverride->length = sizeof(acpi_madt_irqoverride_t);
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irqoverride->bus = bus;
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irqoverride->source = source;
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irqoverride->gsirq = gsirq;
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irqoverride->flags = flags;
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return(irqoverride->length);
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return irqoverride->length;
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}
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int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu,
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u16 flags, u8 lint)
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u16 flags, u8 lint)
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{
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lapic_nmi->type=4;
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lapic_nmi->length=sizeof(acpi_madt_lapic_nmi_t);
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lapic_nmi->type = 4; /* Local APIC NMI structure */
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lapic_nmi->length = sizeof(acpi_madt_lapic_nmi_t);
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lapic_nmi->flags = flags;
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lapic_nmi->processor_id = cpu;
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lapic_nmi->lint = lint;
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lapic_nmi->flags=flags;
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lapic_nmi->processor_id=cpu;
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lapic_nmi->lint=lint;
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return(lapic_nmi->length);
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return lapic_nmi->length;
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}
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void acpi_create_madt(acpi_madt_t *madt)
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{
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#define LOCAL_APIC_ADDR 0xfee00000ULL
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acpi_header_t *header=&(madt->header);
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unsigned long current=(unsigned long)madt+sizeof(acpi_madt_t);
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acpi_header_t *header = &(madt->header);
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unsigned long current = (unsigned long)madt + sizeof(acpi_madt_t);
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memset((void *)madt, 0, sizeof(acpi_madt_t));
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/* fill out header fields */
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/* Fill out header fields. */
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memcpy(header->signature, "APIC", 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
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memcpy(header->asl_compiler_id, ASLC, 4);
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header->length = sizeof(acpi_madt_t);
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header->revision = 1;
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header->revision = 1; /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
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madt->lapic_addr= LOCAL_APIC_ADDR;
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madt->flags = 0x1; /* PCAT_COMPAT */
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madt->lapic_addr = LOCAL_APIC_ADDR;
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madt->flags = 0x1; /* PCAT_COMPAT */
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current = acpi_fill_madt(current);
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/* recalculate length */
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header->length= current - (unsigned long)madt;
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/* (Re)calculate length and checksum. */
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header->length = current - (unsigned long)madt;
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header->checksum = acpi_checksum((void *)madt, header->length);
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header->checksum = acpi_checksum((void *)madt, header->length);
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}
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/* MCFG is defined in the PCI Firmware Specification 3.0. */
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void acpi_create_mcfg(acpi_mcfg_t *mcfg)
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{
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acpi_header_t *header=&(mcfg->header);
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unsigned long current=(unsigned long)mcfg+sizeof(acpi_mcfg_t);
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acpi_header_t *header = &(mcfg->header);
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unsigned long current = (unsigned long)mcfg + sizeof(acpi_mcfg_t);
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memset((void *)mcfg, 0, sizeof(acpi_mcfg_t));
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/* fill out header fields */
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/* Fill out header fields. */
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memcpy(header->signature, "MCFG", 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
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@ -233,37 +234,40 @@ void acpi_create_mcfg(acpi_mcfg_t *mcfg)
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current = acpi_fill_mcfg(current);
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/* recalculate length */
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header->length= current - (unsigned long)mcfg;
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header->checksum = acpi_checksum((void *)mcfg, header->length);
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/* (Re)calculate length and checksum. */
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header->length = current - (unsigned long)mcfg;
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header->checksum = acpi_checksum((void *)mcfg, header->length);
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}
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/* this can be overriden by platform ACPI setup code,
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* if it calls acpi_create_ssdt_generator
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/*
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* This can be overriden by platform ACPI setup code, if it calls
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* acpi_create_ssdt_generator().
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*/
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unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current,
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const char *oem_table_id) {
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unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(
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unsigned long current, const char *oem_table_id)
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{
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return current;
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}
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void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
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{
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unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t);
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unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t);
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memset((void *)ssdt, 0, sizeof(acpi_header_t));
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memcpy(&ssdt->signature, "SSDT", 4);
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ssdt->revision = 2;
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ssdt->revision = 2; /* ACPI 1.0/2.0: ?, ACPI 3.0/4.0: 2 */
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memcpy(&ssdt->oem_id, OEM_ID, 6);
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memcpy(&ssdt->oem_table_id, oem_table_id, 8);
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ssdt->oem_revision = 42;
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memcpy(&ssdt->asl_compiler_id, "CORE", 4);
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memcpy(&ssdt->asl_compiler_id, ASLC, 4);
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ssdt->asl_compiler_revision = 42;
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ssdt->length = sizeof(acpi_header_t);
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acpigen_set_current((char *) current);
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current = acpi_fill_ssdt_generator(current, oem_table_id);
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/* recalculate length */
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/* (Re)calculate length and checksum. */
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ssdt->length = current - (unsigned long)ssdt;
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ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length);
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}
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@ -271,120 +275,117 @@ void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
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int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic)
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{
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memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t));
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lapic->type=0;
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lapic->length=sizeof(acpi_srat_lapic_t);
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lapic->flags=1;
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lapic->proximity_domain_7_0 = node;
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lapic->apic_id=apic;
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lapic->type = 0; /* Processor local APIC/SAPIC affinity structure */
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lapic->length = sizeof(acpi_srat_lapic_t);
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lapic->flags = (1 << 0); /* Enabled (the use of this structure). */
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lapic->proximity_domain_7_0 = node;
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/* TODO: proximity_domain_31_8, local SAPIC EID, clock domain. */
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lapic->apic_id = apic;
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return(lapic->length);
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return lapic->length;
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}
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int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek,u32 sizek, u32 flags)
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int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek, u32 sizek,
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u32 flags)
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{
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mem->type=1;
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mem->length=sizeof(acpi_srat_mem_t);
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mem->base_address_low = (basek<<10);
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mem->base_address_high = (basek>>(32-10));
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mem->length_low = (sizek<<10);
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mem->length_high = (sizek>>(32-10));
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mem->proximity_domain = node;
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mem->type = 1; /* Memory affinity structure */
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mem->length = sizeof(acpi_srat_mem_t);
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mem->base_address_low = (basek << 10);
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mem->base_address_high = (basek >> (32 - 10));
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mem->length_low = (sizek << 10);
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mem->length_high = (sizek >> (32 - 10));
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mem->proximity_domain = node;
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mem->flags = flags;
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return(mem->length);
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return mem->length;
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}
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/* http://www.microsoft.com/whdc/system/sysinternals/sratdwn.mspx */
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void acpi_create_srat(acpi_srat_t *srat)
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{
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acpi_header_t *header = &(srat->header);
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unsigned long current = (unsigned long)srat + sizeof(acpi_srat_t);
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acpi_header_t *header=&(srat->header);
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unsigned long current=(unsigned long)srat+sizeof(acpi_srat_t);
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memset((void *)srat, 0, sizeof(acpi_srat_t));
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memset((void *)srat, 0, sizeof(acpi_srat_t));
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/* Fill out header fields. */
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memcpy(header->signature, "SRAT", 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
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memcpy(header->asl_compiler_id, ASLC, 4);
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/* fill out header fields */
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memcpy(header->signature, "SRAT", 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
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memcpy(header->asl_compiler_id, ASLC, 4);
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header->length = sizeof(acpi_srat_t);
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header->revision = 1; /* ACPI 1.0: N/A, 2.0: 1, 3.0: 2, 4.0: 3 */
|
||||
|
||||
header->length = sizeof(acpi_srat_t);
|
||||
header->revision = 1;
|
||||
srat->resv = 1; /* Spec: Reserved to 1 for backwards compatibility. */
|
||||
|
||||
srat->resv = 0x1; /* BACK COMP */
|
||||
current = acpi_fill_srat(current);
|
||||
|
||||
current = acpi_fill_srat(current);
|
||||
|
||||
/* recalculate length */
|
||||
header->length= current - (unsigned long)srat;
|
||||
|
||||
header->checksum = acpi_checksum((void *)srat, header->length);
|
||||
/* (Re)calculate length and checksum. */
|
||||
header->length = current - (unsigned long)srat;
|
||||
header->checksum = acpi_checksum((void *)srat, header->length);
|
||||
}
|
||||
|
||||
/* http://h21007.www2.hp.com/portal/download/files/unprot/Itanium/slit.pdf */
|
||||
void acpi_create_slit(acpi_slit_t *slit)
|
||||
{
|
||||
acpi_header_t *header = &(slit->header);
|
||||
unsigned long current = (unsigned long)slit + sizeof(acpi_slit_t);
|
||||
|
||||
acpi_header_t *header=&(slit->header);
|
||||
unsigned long current=(unsigned long)slit+sizeof(acpi_slit_t);
|
||||
memset((void *)slit, 0, sizeof(acpi_slit_t));
|
||||
|
||||
memset((void *)slit, 0, sizeof(acpi_slit_t));
|
||||
/* Fill out header fields. */
|
||||
memcpy(header->signature, "SLIT", 4);
|
||||
memcpy(header->oem_id, OEM_ID, 6);
|
||||
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
|
||||
memcpy(header->asl_compiler_id, ASLC, 4);
|
||||
|
||||
/* fill out header fields */
|
||||
memcpy(header->signature, "SLIT", 4);
|
||||
memcpy(header->oem_id, OEM_ID, 6);
|
||||
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
|
||||
memcpy(header->asl_compiler_id, ASLC, 4);
|
||||
header->length = sizeof(acpi_slit_t);
|
||||
header->revision = 1; /* ACPI 1.0: N/A, ACPI 2.0/3.0/4.0: 1 */
|
||||
|
||||
header->length = sizeof(acpi_slit_t);
|
||||
header->revision = 1;
|
||||
current = acpi_fill_slit(current);
|
||||
|
||||
current = acpi_fill_slit(current);
|
||||
|
||||
/* recalculate length */
|
||||
header->length= current - (unsigned long)slit;
|
||||
|
||||
header->checksum = acpi_checksum((void *)slit, header->length);
|
||||
/* (Re)calculate length and checksum. */
|
||||
header->length = current - (unsigned long)slit;
|
||||
header->checksum = acpi_checksum((void *)slit, header->length);
|
||||
}
|
||||
|
||||
/* http://www.intel.com/hardwaredesign/hpetspec_1.pdf */
|
||||
void acpi_create_hpet(acpi_hpet_t *hpet)
|
||||
{
|
||||
#define HPET_ADDR 0xfed00000ULL
|
||||
acpi_header_t *header=&(hpet->header);
|
||||
acpi_addr_t *addr=&(hpet->addr);
|
||||
#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 */
|
||||
/* Fill out header fields. */
|
||||
memcpy(header->signature, "HPET", 4);
|
||||
memcpy(header->oem_id, OEM_ID, 6);
|
||||
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
|
||||
memcpy(header->asl_compiler_id, ASLC, 4);
|
||||
|
||||
header->length = sizeof(acpi_hpet_t);
|
||||
header->revision = 1;
|
||||
header->revision = 1; /* Currently 1. Table added in ACPI 2.0. */
|
||||
|
||||
/* 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;
|
||||
/* 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;
|
||||
hpet->id = 0x102282a0; /* AMD! FIXME */
|
||||
hpet->number = 0;
|
||||
hpet->min_tick = 4096;
|
||||
|
||||
header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
|
||||
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));
|
||||
memset((void *)facs, 0, sizeof(acpi_facs_t));
|
||||
|
||||
memcpy(facs->signature, "FACS", 4);
|
||||
facs->length = sizeof(acpi_facs_t);
|
||||
|
|
@ -394,72 +395,74 @@ void acpi_create_facs(acpi_facs_t *facs)
|
|||
facs->flags = 0;
|
||||
facs->x_firmware_waking_vector_l = 0;
|
||||
facs->x_firmware_waking_vector_h = 0;
|
||||
facs->version = 1;
|
||||
facs->version = 1; /* ACPI 1.0: 0, ACPI 2.0/3.0: 1, ACPI 4.0: 2 */
|
||||
}
|
||||
|
||||
void acpi_write_rsdt(acpi_rsdt_t *rsdt)
|
||||
{
|
||||
acpi_header_t *header=&(rsdt->header);
|
||||
acpi_header_t *header = &(rsdt->header);
|
||||
|
||||
/* fill out header fields */
|
||||
/* Fill out header fields. */
|
||||
memcpy(header->signature, "RSDT", 4);
|
||||
memcpy(header->oem_id, OEM_ID, 6);
|
||||
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
|
||||
memcpy(header->asl_compiler_id, ASLC, 4);
|
||||
|
||||
header->length = sizeof(acpi_rsdt_t);
|
||||
header->revision = 1;
|
||||
header->revision = 1; /* ACPI 1.0/2.0/3.0/4.0: 1 */
|
||||
|
||||
/* fill out entries */
|
||||
|
||||
// entries are filled in later, we come with an empty set.
|
||||
|
||||
/* fix checksum */
|
||||
/* 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_xsdt(acpi_xsdt_t *xsdt)
|
||||
{
|
||||
acpi_header_t *header=&(xsdt->header);
|
||||
acpi_header_t *header = &(xsdt->header);
|
||||
|
||||
/* fill out header fields */
|
||||
/* Fill out header fields. */
|
||||
memcpy(header->signature, "XSDT", 4);
|
||||
memcpy(header->oem_id, OEM_ID, 6);
|
||||
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
|
||||
memcpy(header->asl_compiler_id, ASLC, 4);
|
||||
|
||||
header->length = sizeof(acpi_xsdt_t);
|
||||
header->revision = 1;
|
||||
header->revision = 1; /* ACPI 1.0: N/A, 2.0/3.0/4.0: 1 */
|
||||
|
||||
/* fill out entries */
|
||||
|
||||
// entries are filled in later, we come with an empty set.
|
||||
|
||||
/* fix checksum */
|
||||
/* Entries are filled in later, we come with an empty set. */
|
||||
|
||||
/* Fix checksum. */
|
||||
header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t));
|
||||
}
|
||||
|
||||
void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, acpi_xsdt_t *xsdt)
|
||||
{
|
||||
memset(rsdp, 0, sizeof(acpi_rsdp_t));
|
||||
|
||||
memcpy(rsdp->signature, RSDP_SIG, 8);
|
||||
memcpy(rsdp->oem_id, OEM_ID, 6);
|
||||
rsdp->length = sizeof(acpi_rsdp_t);
|
||||
rsdp->rsdt_address = (u32)rsdt;
|
||||
/* Some OSes expect an XSDT to be present for RSD PTR
|
||||
* revisions >= 2. If we don't have an ACPI XSDT, force
|
||||
* ACPI 1.0 (and thus RSD PTR revision 0)
|
||||
|
||||
rsdp->length = sizeof(acpi_rsdp_t);
|
||||
rsdp->rsdt_address = (u32)rsdt;
|
||||
|
||||
/*
|
||||
* Revision: ACPI 1.0: 0, ACPI 2.0/3.0/4.0: 2.
|
||||
*
|
||||
* Some OSes expect an XSDT to be present for RSD PTR revisions >= 2.
|
||||
* If we don't have an ACPI XSDT, force ACPI 1.0 (and thus RSD PTR
|
||||
* revision 0).
|
||||
*/
|
||||
if (xsdt == NULL) {
|
||||
rsdp->revision = 0;
|
||||
rsdp->revision = 0;
|
||||
} else {
|
||||
rsdp->xsdt_address = (u64)(u32)xsdt;
|
||||
rsdp->revision = 2;
|
||||
rsdp->xsdt_address = (u64)(u32)xsdt;
|
||||
rsdp->revision = 2;
|
||||
}
|
||||
rsdp->checksum = acpi_checksum((void *)rsdp, 20);
|
||||
rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
|
||||
|
||||
/* Calculate checksums. */
|
||||
rsdp->checksum = acpi_checksum((void *)rsdp, 20);
|
||||
rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
|
||||
}
|
||||
|
||||
#if CONFIG_HAVE_ACPI_RESUME == 1
|
||||
|
|
@ -478,13 +481,13 @@ void suspend_resume(void)
|
|||
#error "And coreboot memory reserved in mainboard.c"
|
||||
#endif
|
||||
#endif
|
||||
/* if we happen to be resuming find wakeup vector and jump to OS */
|
||||
/* If we happen to be resuming find wakeup vector and jump to OS. */
|
||||
wake_vec = acpi_find_wakeup_vector();
|
||||
if (wake_vec)
|
||||
acpi_jump_to_wakeup(wake_vec);
|
||||
}
|
||||
|
||||
/* this is to be filled by SB code - startup value what was found */
|
||||
/* This is to be filled by SB code - startup value what was found. */
|
||||
u8 acpi_slp_type = 0;
|
||||
|
||||
static int acpi_is_wakeup(void)
|
||||
|
|
@ -506,7 +509,6 @@ static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
|
|||
if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
|
||||
rsdp->length) != 0))
|
||||
return NULL;
|
||||
|
||||
printk(BIOS_DEBUG, "Checksum 2 passed all OK\n");
|
||||
|
||||
return rsdp;
|
||||
|
|
@ -522,11 +524,10 @@ void *acpi_get_wakeup_rsdp(void)
|
|||
void *acpi_find_wakeup_vector(void)
|
||||
{
|
||||
char *p, *end;
|
||||
|
||||
acpi_rsdt_t *rsdt;
|
||||
acpi_facs_t *facs;
|
||||
acpi_fadt_t *fadt;
|
||||
void *wake_vec;
|
||||
void *wake_vec;
|
||||
int i;
|
||||
|
||||
rsdp = NULL;
|
||||
|
|
@ -534,11 +535,11 @@ void *acpi_find_wakeup_vector(void)
|
|||
if (!acpi_is_wakeup())
|
||||
return NULL;
|
||||
|
||||
printk(BIOS_DEBUG, "Trying to find the wakeup vector ...\n");
|
||||
printk(BIOS_DEBUG, "Trying to find the wakeup vector...\n");
|
||||
|
||||
/* find RSDP */
|
||||
for (p = (char *) 0xe0000; p < (char *) 0xfffff; p+=16) {
|
||||
if ((rsdp = valid_rsdp((acpi_rsdp_t *) p)))
|
||||
/* Find RSDP. */
|
||||
for (p = (char *)0xe0000; p < (char *)0xfffff; p += 16) {
|
||||
if ((rsdp = valid_rsdp((acpi_rsdp_t *)p)))
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
@ -548,11 +549,11 @@ void *acpi_find_wakeup_vector(void)
|
|||
printk(BIOS_DEBUG, "RSDP found at %p\n", rsdp);
|
||||
rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
|
||||
|
||||
end = (char *) rsdt + rsdt->header.length;
|
||||
end = (char *)rsdt + rsdt->header.length;
|
||||
printk(BIOS_DEBUG, "RSDT found at %p ends at %p\n", rsdt, end);
|
||||
|
||||
for (i = 0; ((char *) &rsdt->entry[i]) < end; i++) {
|
||||
fadt = (acpi_fadt_t *) rsdt->entry[i];
|
||||
for (i = 0; ((char *)&rsdt->entry[i]) < end; i++) {
|
||||
fadt = (acpi_fadt_t *)rsdt->entry[i];
|
||||
if (strncmp((char *)fadt, "FACP", 4) == 0)
|
||||
break;
|
||||
fadt = NULL;
|
||||
|
|
@ -565,13 +566,15 @@ void *acpi_find_wakeup_vector(void)
|
|||
facs = (acpi_facs_t *)fadt->firmware_ctrl;
|
||||
|
||||
if (facs == NULL) {
|
||||
printk(BIOS_DEBUG, "No FACS found, wake up from S3 not possible.\n");
|
||||
printk(BIOS_DEBUG, "No FACS found, wake up from S3 not "
|
||||
"possible.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
printk(BIOS_DEBUG, "FACS found at %p\n", facs);
|
||||
wake_vec = (void *) facs->firmware_waking_vector;
|
||||
wake_vec = (void *)facs->firmware_waking_vector;
|
||||
printk(BIOS_DEBUG, "OS waking vector is %p\n", wake_vec);
|
||||
|
||||
return wake_vec;
|
||||
}
|
||||
|
||||
|
|
@ -579,29 +582,34 @@ extern char *lowmem_backup;
|
|||
extern char *lowmem_backup_ptr;
|
||||
extern int lowmem_backup_size;
|
||||
|
||||
#define WAKEUP_BASE 0x600
|
||||
#define WAKEUP_BASE 0x600
|
||||
|
||||
void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target, u32
|
||||
backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE;
|
||||
void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target,
|
||||
u32 backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE;
|
||||
|
||||
extern unsigned char __wakeup, __wakeup_size;
|
||||
|
||||
void acpi_jump_to_wakeup(void *vector)
|
||||
{
|
||||
u32 acpi_backup_memory = (u32) cbmem_find(CBMEM_ID_RESUME);
|
||||
u32 acpi_backup_memory = (u32)cbmem_find(CBMEM_ID_RESUME);
|
||||
|
||||
if (!acpi_backup_memory) {
|
||||
printk(BIOS_WARNING, "ACPI: Backup memory missing. No S3 Resume.\n");
|
||||
printk(BIOS_WARNING, "ACPI: Backup memory missing. "
|
||||
"No S3 resume.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// FIXME this should go into the ACPI backup memory, too. No pork saussages.
|
||||
/* just restore the SMP trampoline and continue with wakeup on assembly level */
|
||||
// FIXME: This should go into the ACPI backup memory, too. No pork saussages.
|
||||
/*
|
||||
* Just restore the SMP trampoline and continue with wakeup on
|
||||
* assembly level.
|
||||
*/
|
||||
memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size);
|
||||
|
||||
/* copy wakeup trampoline in place */
|
||||
/* Copy wakeup trampoline in place. */
|
||||
memcpy((void *)WAKEUP_BASE, &__wakeup, (size_t)&__wakeup_size);
|
||||
|
||||
acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
|
||||
acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE,
|
||||
HIGH_MEMORY_SAVE);
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue