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 <device/pci.h>
  12 #include <device/pci_ids.h>
  13 #include <assert.h>
  14 #include "bus.h"
  15 #include "ioapic.h"
  16
  17 unsigned long acpi_fill_mcfg(unsigned long current)
  18 {
  19         /* Just a dummy */
  20         return current;
  21 }
  22
  23 unsigned long acpi_fill_slit(unsigned long current)
  24 {
  25         // Not implemented
  26         return current;
  27 }
  28
  29 unsigned long acpi_fill_srat(unsigned long current)
  30 {
  31         // Not implemented
  32         return current;
  33 }
  34
  35 unsigned long acpi_fill_madt(unsigned long current)
  36 {
  37         unsigned int irq_start = 0;
  38         device_t dev = 0;
  39     struct resource* res = NULL;
  40
  41
  42         // SJM: Hard-code CPU LAPIC entries for now
  43         //              Use SourcePoint numbering of processors
  44         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 0, 6);
  45         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 1, 7);
  46         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 2, 0);
  47         current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 3, 1);
  48
  49
  50         // Southbridge IOAPIC
  51         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_ICH3, 0xfec00000, irq_start);
  52         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  53
  54         // P64H2#2 Bus A IOAPIC
  55         dev = dev_find_slot(PCI_BUS_E7501_HI_B, PCI_DEVFN(30, 0));
  56         if (!dev)
  57                 BUG();          // Config.lb error?
  58         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  59         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_2_BUS_A, res->base, irq_start);
  60         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  61
  62         // P64H2#2 Bus B IOAPIC
  63         dev = dev_find_slot(PCI_BUS_E7501_HI_B, PCI_DEVFN(28, 0));
  64         if (!dev)
  65                 BUG();          // Config.lb error?
  66         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  67         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_2_BUS_B, res->base, irq_start);
  68         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  69
  70
  71         // P64H2#1 Bus A IOAPIC
  72         dev = dev_find_slot(PCI_BUS_E7501_HI_D, PCI_DEVFN(30, 0));
  73         if (!dev)
  74                 BUG();          // Config.lb error?
  75         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  76         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_1_BUS_A, res->base, irq_start);
  77         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  78
  79         // P64H2#1 Bus B IOAPIC
  80         dev = dev_find_slot(PCI_BUS_E7501_HI_D, PCI_DEVFN(28, 0));
  81         if (!dev)
  82                 BUG();          // Config.lb error?
  83         res = find_resource(dev, PCI_BASE_ADDRESS_0);
  84         current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, IOAPIC_P64H2_1_BUS_B, res->base, irq_start);
  85         irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
  86
  87         // Map ISA IRQ 0 to IRQ 2
  88         current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 1, 0, 2, 0);
  89
  90         // IRQ9 differs from ISA standard - ours is active high, level-triggered
  91         current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 0, 9, 9, 0xD);
  92
  93         return current;
  94 }
  95
  96
  97 unsigned long write_acpi_tables(unsigned long start)
  98 {
  99         unsigned long current;
 100         acpi_rsdp_t *rsdp;
 101         acpi_rsdt_t *rsdt;
 102         acpi_madt_t *madt;
 103
 104         /* Align ACPI tables to 16byte */
 105         start   = ( start + 0x0f ) & -0x10;
 106         current = start;
 107
 108         printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx...\n", start);
 109
 110         /* We need at least an RSDP and an RSDT Table */
 111         rsdp = (acpi_rsdp_t *) current;
 112         current += sizeof(acpi_rsdp_t);
 113         rsdt = (acpi_rsdt_t *) current;
 114         current += sizeof(acpi_rsdt_t);
 115
 116         /* clear all table memory */
 117         memset((void *)start, 0, current - start);
 118
 119         acpi_write_rsdp(rsdp, rsdt, NULL);
 120         acpi_write_rsdt(rsdt);
 121
 122         /*
 123          * We explicitly add these tables later on:
 124          */
 125         /* QNX wants an MADT */
 126         printk(BIOS_DEBUG, "ACPI:    * MADT\n");
 127
 128         madt = (acpi_madt_t *) current;
 129         acpi_create_madt(madt);
 130         current+=madt->header.length;
 131         acpi_add_table(rsdp,madt);
 132
 133         printk(BIOS_INFO, "ACPI: done.\n");
 134         return current;
 135 }
 136