src/mainboard/intel/xe7501devkit/acpi_tables.c

   1 /*
   2  * Ported to Intel XE7501DEVKIT from Agami Aruma
   3  * written by Stefan Reinauer <stepan@openbios.org>
   4  *  (C) 2005 Stefan Reinauer
   5  *  (C) 2005 Digital Design Corporation
   6  */
   7
   8 #include <console/console.h>
   9 #include <string.h>
  10 #include <arch/acpi.h>
  11 #include <arch/ioapic.h>
  12 #include <device/pci.h>
  13 #include <device/pci_ids.h>
  14 #include <assert.h>
  15 #include "bus.h"
  16 #include "ioapic.h"
  17
  18 unsigned long acpi_fill_mcfg(unsigned long current)
  19 {
  20         /* Just a dummy */
  21         return current;
  22 }
  23
  24 unsigned long acpi_fill_slit(unsigned long current)
  25 {
  26         // Not implemented
  27         return current;
  28 }
  29
  30 unsigned long acpi_fill_srat(unsigned long current)
  31 {
  32         // Not implemented
  33         return current;
  34 }
  35
  36 unsigned long acpi_fill_madt(unsigned long current)
  37 {
  38         unsigned int irq_start = 0;
  39         device_t dev = 0;
  40     struct resource* res = NULL;
  41
  42
  43         // SJM: Hard-code CPU LAPIC entries for now
  44         //              Use SourcePoint numbering of processors
  45         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 0, 6);
  46         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 1, 7);
  47         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 2, 0);
  48         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 3, 1);
  49
  50
  51         // Southbridge IOAPIC
  52         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_ICH3, IO_APIC_ADDR, irq_start);
  53         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  54
  55         // P64H2#2 Bus A IOAPIC
  56         dev = dev_find_slot(PCI_BUS_E7501_HI_B, PCI_DEVFN(30, 0));
  57         if (!dev)
  58                 BUG();          // Config.lb error?
  59         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  60         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_2_BUS_A, res->base, irq_start);
  61         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  62
  63         // P64H2#2 Bus B IOAPIC
  64         dev = dev_find_slot(PCI_BUS_E7501_HI_B, PCI_DEVFN(28, 0));
  65         if (!dev)
  66                 BUG();          // Config.lb error?
  67         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  68         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_2_BUS_B, res->base, irq_start);
  69         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  70
  71
  72         // P64H2#1 Bus A IOAPIC
  73         dev = dev_find_slot(PCI_BUS_E7501_HI_D, PCI_DEVFN(30, 0));
  74         if (!dev)
  75                 BUG();          // Config.lb error?
  76         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  77         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_1_BUS_A, res->base, irq_start);
  78         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  79
  80         // P64H2#1 Bus B IOAPIC
  81         dev = dev_find_slot(PCI_BUS_E7501_HI_D, PCI_DEVFN(28, 0));
  82         if (!dev)
  83                 BUG();          // Config.lb error?
  84         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  85         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_1_BUS_B, res->base, irq_start);
  86         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  87
  88         // Map ISA IRQ 0 to IRQ 2
  89         current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 1, 0, 2, 0);
  90
  91         // IRQ9 differs from ISA standard - ours is active high, level-triggered
  92         current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 0, 9, 9, 0xD);
  93
  94         return current;
  95 }
  96
  97
  98 unsigned long write_acpi_tables(unsigned long start)
  99 {
 100         unsigned long current;
 101         acpi_rsdp_t *rsdp;
 102         acpi_rsdt_t *rsdt;
 103         acpi_madt_t *madt;
 104
 105         /* Align ACPI tables to 16byte */
 106         start   = ( start + 0x0f ) & -0x10;
 107         current = start;
 108
 109         printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx...\n", start);
 110
 111         /* We need at least an RSDP and an RSDT Table */
 112         rsdp = (acpi_rsdp_t *) current;
 113         current += sizeof(acpi_rsdp_t);
 114         rsdt = (acpi_rsdt_t *) current;
 115         current += sizeof(acpi_rsdt_t);
 116
 117         /* clear all table memory */
 118         memset((void *)start, 0, current - start);
 119
 120         acpi_write_rsdp(rsdp, rsdt, NULL);
 121         acpi_write_rsdt(rsdt);
 122
 123         /*
 124          * We explicitly add these tables later on:
 125          */
 126         /* QNX wants an MADT */
 127         printk(BIOS_DEBUG, "ACPI:    * MADT\n");
 128
 129         madt = (acpi_madt_t *) current;
 130         acpi_create_madt(madt);
 131         current+=madt->header.length;
 132         acpi_add_table(rsdp,madt);
 133
 134         printk(BIOS_INFO, "ACPI: done.\n");
 135         return current;
 136 }
 137