diff options
Diffstat (limited to 'src/northbridge/ibm/cpc710/cpc710_northbridge.c')
-rw-r--r-- | src/northbridge/ibm/cpc710/cpc710_northbridge.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/northbridge/ibm/cpc710/cpc710_northbridge.c b/src/northbridge/ibm/cpc710/cpc710_northbridge.c new file mode 100644 index 0000000000..2633dcd02c --- /dev/null +++ b/src/northbridge/ibm/cpc710/cpc710_northbridge.c @@ -0,0 +1,103 @@ +#include <console/console.h> +#include <arch/io.h> +#include <stdint.h> +#include <device/device.h> +#include <device/pci.h> +#include <stdlib.h> +#include <string.h> +#include <bitops.h> +#include <cpu/cpu.h> +#include "chip.h" + +static void pci_domain_read_resources(device_t dev) +{ + struct resource *resource; + + /* Initialize the system wide io space constraints */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); + resource->base = 0; + resource->limit = 0xffffUL; + resource->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED; + + /* Initialize the system wide memory resources constraints */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); + resource->base = 0x80000000ULL; + resource->limit = 0xfeffffffULL; /* We can put pci resources in the system controll area */ + resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED; +} + +static void ram_resource(device_t dev, unsigned long index, + unsigned long basek, unsigned long sizek) +{ + struct resource *resource; + + if (!sizek) { + return; + } + resource = new_resource(dev, index); + resource->base = ((resource_t)basek) << 10; + resource->size = ((resource_t)sizek) << 10; + resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE | \ + IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; +} + +static void pci_domain_set_resources(device_t dev) +{ + int idx; + + /* Report the memory regions */ + idx = 10; + ram_resource(dev, idx++, 0, 1024*1024); /* FIXME */ + + /* And assign the resources */ + assign_resources(&dev->link[0]); +} + + +static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max) +{ + max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max); + return max; +} + +static struct device_operations pci_domain_ops = { + .read_resources = pci_domain_read_resources, + .set_resources = pci_domain_set_resources, + .enable_resources = enable_childrens_resources, + .init = 0, + .scan_bus = pci_domain_scan_bus, + .ops_pci_bus = &pci_ppc_conf1, +}; + +static void cpu_bus_init(device_t dev) +{ + initialize_cpus(&dev->link[0]); +} + +static void cpu_bus_noop(device_t dev) +{ +} + +static struct device_operations cpu_bus_ops = { + .read_resources = cpu_bus_noop, + .set_resources = cpu_bus_noop, + .enable_resources = cpu_bus_noop, + .init = cpu_bus_init, + .scan_bus = 0, +}; + +static void enable_dev(struct device *dev) +{ + /* Set the operations if it is a special bus type */ + if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) { + dev->ops = &pci_domain_ops; + } + else if (dev->path.type == DEVICE_PATH_CPU_BUS) { + dev->ops = &cpu_bus_ops; + } +} + +struct chip_operations northbridge_ibm_cpc710_ops = { + CHIP_NAME("CPC710") + .enable_dev = enable_dev, +}; |