src/northbridge/ibm/cpc925/cpc925_northbridge.c

   1 #include <console/console.h>
   2 #include <arch/io.h>
   3 #include <stdint.h>
   4 #include <device/device.h>
   5 #include <device/pci.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <bitops.h>
   9 #include <cpu/cpu.h>
  10 #include "chip.h"
  11
  12 static void ram_resource(device_t dev, unsigned long index,
  13         unsigned long basek, unsigned long sizek)
  14 {
  15         struct resource *resource;
  16
  17         if (!sizek) {
  18                 return;
  19         }
  20         resource = new_resource(dev, index);
  21         resource->base  = ((resource_t)basek) << 10;
  22         resource->size  = ((resource_t)sizek) << 10;
  23         resource->flags =  IORESOURCE_MEM | IORESOURCE_CACHEABLE | \
  24                 IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
  25 }
  26
  27 static void pci_domain_set_resources(device_t dev)
  28 {
  29         int idx;
  30
  31         /* Report the memory regions */
  32         idx = 10;
  33         ram_resource(dev, idx++, 0, 1024*1024); /* FIXME */
  34
  35         /* And assign the resources */
  36         assign_resources(&dev->link[0]);
  37 }
  38
  39 static struct device_operations pci_domain_ops = {
  40         .read_resources   = pci_domain_read_resources,
  41         .set_resources    = pci_domain_set_resources,
  42         .enable_resources = enable_childrens_resources,
  43         .init             = 0,
  44         .scan_bus         = pci_domain_scan_bus,
  45         .ops_pci_bus      = &pci_ppc_conf1,
  46 };
  47
  48 static void cpu_bus_init(device_t dev)
  49 {
  50         initialize_cpus(&dev->link[0]);
  51 }
  52
  53 static void cpu_bus_noop(device_t dev)
  54 {
  55 }
  56
  57 static struct device_operations cpu_bus_ops = {
  58         .read_resources   = cpu_bus_noop,
  59         .set_resources    = cpu_bus_noop,
  60         .enable_resources = cpu_bus_noop,
  61         .init             = cpu_bus_init,
  62         .scan_bus         = 0,
  63 };
  64
  65 static void enable_dev(struct device *dev)
  66 {
  67         /* Set the operations if it is a special bus type */
  68         if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) {
  69                 dev->ops = &pci_domain_ops;
  70         }
  71         else if (dev->path.type == DEVICE_PATH_CPU_BUS) {
  72                 dev->ops = &cpu_bus_ops;
  73         }
  74 }
  75
  76 struct chip_operations northbridge_ibm_cpc925_ops = {
  77         CHIP_NAME("IBM CPC925 Northbridge")
  78         .enable_dev = enable_dev,
  79 };