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/*
* Island Aruma ACPI support
* written by Stefan Reinauer <stepan@openbios.org>
* (C) 2005 Stefan Reinauer
*/
#include <console/console.h>
#include <string.h>
#include <arch/acpi.h>
#include <device/pci.h>
#include <device/pci_ids.h>
extern unsigned char AmlCode[];
#define IO_APIC_ADDR 0xfec00000UL
unsigned long acpi_dump_apics(unsigned long current)
{
unsigned int gsi_base=0x18, ioapic_nr=2;
device_t dev=0;
/* create all subtables for 4p */
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 0, 16);
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 1, 17);
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 2, 18);
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 3, 19);
/* Write 8111 IOAPIC */
current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, 1,
IO_APIC_ADDR, 0);
/* Write all 8131 IOAPICs */
while((dev = dev_find_device(PCI_VENDOR_ID_AMD, 0x7451, dev))) {
ACPI_WRITE_MADT_IOAPIC(dev, ioapic_nr);
ioapic_nr++;
}
current += acpi_create_madt_irqoverride( (acpi_madt_irqoverride_t *)
current, 1, 0, 2, 0 );
current += acpi_create_madt_irqoverride( (acpi_madt_irqoverride_t *)
current, 1, 0, 2, 0 );
return current;
}
/* The next two tables are used by our DSDT and are freely defined
* here. This construct is used because the bus numbers containing
* the 8131 bridges may vary so that we need to pass LinuxBIOS
* knowledge into the DSDT
*/
typedef struct lnxc_busses {
u8 secondary;
u8 subordinate;
} acpi_lnxb_busses_t;
typedef struct acpi_lnxb {
struct acpi_table_header header;
acpi_lnxb_busses_t busses[5];
} acpi_lnxb_t;
/* special linuxbios acpi table */
void acpi_create_lnxb(acpi_lnxb_t *lnxb)
{
device_t dev;
int busidx=0;
acpi_header_t *header=&(lnxb->header);
/* fill out header fields */
memcpy(header->signature, "LNXB", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, "LNXBIOS ", 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_lnxb_t);
header->revision = 1;
/*
* Write external 8131 bus ranges
*/
/* first skip the onboard 8131 */
dev=dev_find_device(PCI_VENDOR_ID_AMD, 0x7450, 0);
dev=dev_find_device(PCI_VENDOR_ID_AMD, 0x7450, dev);
/* now look at the last 8131 in each chain,
* as it contains the valid bus ranges
*/
while((dev = dev_find_device(PCI_VENDOR_ID_AMD, 0x7450, dev))
&& busidx<5 ) {
int subu, fn, slot;
acpi_lnxb_busses_t *busses;
if(PCI_SLOT(dev->path.u.pci.devfn)!=4)
continue;
busses=&(lnxb->busses[busidx]);
lnxb->busses[busidx].secondary = dev->bus->secondary;
lnxb->busses[busidx].subordinate =
pci_read_config8(dev, PCI_SUBORDINATE_BUS);
busidx++;
}
header->checksum = acpi_checksum((void *)lnxb, sizeof(acpi_lnxb_t));
}
unsigned long write_acpi_tables(unsigned long start)
{
unsigned long current;
acpi_rsdp_t *rsdp;
acpi_rsdt_t *rsdt;
acpi_hpet_t *hpet;
acpi_madt_t *madt;
acpi_fadt_t *fadt;
acpi_facs_t *facs;
acpi_lnxb_t *lnxb;
acpi_header_t *dsdt;
/* Align ACPI tables to 16byte */
start = ( start + 0x0f ) & -0x10;
current = start;
printk_info("ACPI: Writing ACPI tables at %lx...\n", start);
/* We need at least an RSDP and an RSDT Table */
rsdp = (acpi_rsdp_t *) current;
current += sizeof(acpi_rsdp_t);
rsdt = (acpi_rsdt_t *) current;
current += sizeof(acpi_rsdt_t);
/* clear all table memory */
memset((void *)start, 0, current - start);
acpi_write_rsdp(rsdp, rsdt);
acpi_write_rsdt(rsdt);
/*
* We explicitly add these tables later on:
*/
printk_debug("ACPI: * HPET\n");
hpet = (acpi_hpet_t *) current;
current += sizeof(acpi_hpet_t);
acpi_create_hpet(hpet);
acpi_add_table(rsdt,hpet);
/* If we want to use HPET Timers Linux wants an MADT */
printk_debug("ACPI: * MADT\n");
madt = (acpi_madt_t *) current;
acpi_create_madt(madt);
current+=madt->header.length;
acpi_add_table(rsdt,madt);
printk_debug("ACPI: * LNXB\n");
lnxb=(acpi_lnxb_t *)current;
current += sizeof(acpi_facs_t);
acpi_create_lnxb(lnxb);
printk_debug("ACPI: * FACS\n");
facs = (acpi_facs_t *) current;
current += sizeof(acpi_facs_t);
acpi_create_facs(facs);
dsdt = (acpi_header_t *)current;
current += ((acpi_header_t *)AmlCode)->length;
memcpy((void *)dsdt,(void *)AmlCode, \
((acpi_header_t *)AmlCode)->length);
/* fix up dsdt */
((u32 *)dsdt)[11]=((u32)lnxb)+sizeof(acpi_header_t);
/* recalculate checksum */
dsdt->checksum = 0;
dsdt->checksum = acpi_checksum(dsdt,dsdt->length);
printk_debug("ACPI: * DSDT @ %08x Length %x\n",dsdt,dsdt->length);
printk_debug("ACPI: * FADT\n");
fadt = (acpi_fadt_t *) current;
current += sizeof(acpi_fadt_t);
acpi_create_fadt(fadt,facs,dsdt);
acpi_add_table(rsdt,fadt);
printk_info("ACPI: done.\n");
return current;
}
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