#include <string.h>
#include <bitops.h>
#include <cpu/cpu.h>
+#include <boot/tables.h>
#include "chip.h"
#include "i945.h"
-static void ram_resource(device_t dev, unsigned long index, unsigned long basek,
- unsigned long sizek)
+static int get_pcie_bar(u32 *base, u32 *len)
{
- struct resource *resource;
+ device_t dev;
+ u32 pciexbar_reg;
+
+ *base = 0;
+ *len = 0;
+
+ dev = dev_find_slot(0, PCI_DEVFN(0, 0));
+ if (!dev)
+ return 0;
+
+ pciexbar_reg = pci_read_config32(dev, PCIEXBAR);
+
+ if (!(pciexbar_reg & (1 << 0)))
+ return 0;
+
+ switch ((pciexbar_reg >> 1) & 3) {
+ case 0: // 256MB
+ *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28));
+ *len = 256 * 1024 * 1024;
+ return 1;
+ case 1: // 128M
+ *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
+ *len = 128 * 1024 * 1024;
+ return 1;
+ case 2: // 64M
+ *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26));
+ *len = 64 * 1024 * 1024;
+ return 1;
+ }
- 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;
+ return 0;
}
-static void pci_domain_read_resources(device_t dev)
+/* IDG memory */
+uint64_t uma_memory_base=0, uma_memory_size=0;
+
+static void add_fixed_resources(struct device *dev, int index)
{
struct resource *resource;
+ u32 pcie_config_base, pcie_config_size;
- /* Initialize the system wide io space constraints */
- resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
- resource->base = 0;
- resource->size = 0;
- resource->align = 0;
- resource->gran = 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 = 0;
- resource->size = 0;
- resource->align = 0;
- resource->gran = 0;
- resource->limit = 0xffffffffUL;
- resource->flags =
- IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
-}
-
-static void tolm_test(void *gp, struct device *dev, struct resource *new)
-{
- struct resource **best_p = gp;
- struct resource *best;
- best = *best_p;
- if (!best || (best->base > new->base)) {
- best = new;
- }
- *best_p = best;
-}
+ printk(BIOS_DEBUG, "Adding UMA memory area\n");
+ resource = new_resource(dev, index);
+ resource->base = (resource_t) uma_memory_base;
+ resource->size = (resource_t) uma_memory_size;
+ resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE |
+ IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
-static uint32_t find_pci_tolm(struct bus *bus)
-{
- struct resource *min;
- uint32_t tolm;
- min = 0;
- search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test,
- &min);
- tolm = 0xffffffffUL;
- if (min && tolm > min->base) {
- tolm = min->base;
+ if (get_pcie_bar(&pcie_config_base, &pcie_config_size)) {
+ printk(BIOS_DEBUG, "Adding PCIe config bar\n");
+ resource = new_resource(dev, index+1);
+ resource->base = (resource_t) pcie_config_base;
+ resource->size = (resource_t) pcie_config_size;
+ resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE |
+ IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
}
- return tolm;
}
-#if HAVE_HIGH_TABLES==1
-#define HIGH_TABLES_SIZE 64 // maximum size of high tables in KB
+#if CONFIG_WRITE_HIGH_TABLES==1
+#define HIGH_TABLES_SIZE 1024 // maximum size of high tables in KB
extern uint64_t high_tables_base, high_tables_size;
#endif
-uint64_t uma_memory_base=0, uma_memory_size=0;
static void pci_domain_set_resources(device_t dev)
{
uint16_t reg16;
unsigned long long tomk;
- pci_tolm = find_pci_tolm(&dev->link[0]);
+ /* Can we find out how much memory we can use at most
+ * this way?
+ */
+ pci_tolm = find_pci_tolm(dev->link_list);
+ printk(BIOS_DEBUG, "pci_tolm: 0x%x\n", pci_tolm);
- printk_spew("Base of stolen memory: 0x%08x\n",
+ printk(BIOS_SPEW, "Base of stolen memory: 0x%08x\n",
pci_read_config32(dev_find_slot(0, PCI_DEVFN(2, 0)), 0x5c));
tolud = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), 0x9c);
- printk_spew("Top of Low Used DRAM: 0x%08x\n", tolud << 24);
+ printk(BIOS_SPEW, "Top of Low Used DRAM: 0x%08x\n", tolud << 24);
tomk = tolud << 14;
reg8 = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), 0x9e);
if (reg8 & 1) {
int tseg_size = 0;
- printk_debug("TSEG decoded, subtracting ");
+ printk(BIOS_DEBUG, "TSEG decoded, subtracting ");
reg8 >>= 1;
reg8 &= 3;
switch (reg8) {
break; /* TSEG = 8M */
}
- printk_debug("%dM\n", tseg_size >> 10);
+ printk(BIOS_DEBUG, "%dM\n", tseg_size >> 10);
tomk -= tseg_size;
}
reg16 = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0, 0)), GGC);
if (!(reg16 & 2)) {
int uma_size = 0;
- printk_debug("IGD decoded, subtracting ");
+ printk(BIOS_DEBUG, "IGD decoded, subtracting ");
reg16 >>= 4;
reg16 &= 7;
switch (reg16) {
break;
}
- printk_debug("%dM UMA\n", uma_size >> 10);
+ printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10);
tomk -= uma_size;
/* For reserving UMA memory in the memory map */
/* The following needs to be 2 lines, otherwise the second
* number is always 0
*/
- printk_info("Available memory: %dK", (uint32_t)tomk);
- printk_info(" (%dM)\n", (uint32_t)(tomk >> 10));
+ printk(BIOS_INFO, "Available memory: %dK", (uint32_t)tomk);
+ printk(BIOS_INFO, " (%dM)\n", (uint32_t)(tomk >> 10));
/* Report the memory regions */
ram_resource(dev, 3, 0, 640);
ram_resource(dev, 5, 4096 * 1024, tomk - 4 * 1024 * 1024);
}
- assign_resources(&dev->link[0]);
+ add_fixed_resources(dev, 6);
-#if HAVE_HIGH_TABLES==1
+ assign_resources(dev->link_list);
+
+#if CONFIG_WRITE_HIGH_TABLES==1
/* Leave some space for ACPI, PIRQ and MP tables */
high_tables_base = (tomk - HIGH_TABLES_SIZE) * 1024;
high_tables_size = HIGH_TABLES_SIZE * 1024;
#endif
}
-static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
-{
- max = pci_scan_bus(&dev->link[0], 0, 0xff, max);
/* TODO We could determine how many PCIe busses we need in
* the bar. For now that number is hardcoded to a max of 64.
+ * See e7525/northbridge.c for an example.
*/
- 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,
+ .enable_resources = NULL,
+ .init = NULL,
.scan_bus = pci_domain_scan_bus,
-#if MMCONF_SUPPORT_DEFAULT
+#if CONFIG_MMCONF_SUPPORT_DEFAULT
.ops_pci_bus = &pci_ops_mmconf,
#else
.ops_pci_bus = &pci_cf8_conf1,
resource->flags =
IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED |
IORESOURCE_ASSIGNED;
- printk_debug("Adding PCIe enhanced config space BAR 0x%08x-0x%08x.\n",
- resource->base, (resource->base + resource->size));
+ printk(BIOS_DEBUG, "Adding PCIe enhanced config space BAR 0x%08lx-0x%08lx.\n",
+ (unsigned long)(resource->base), (unsigned long)(resource->base + resource->size));
}
static void mc_set_resources(device_t dev)
{
- struct resource *resource, *last;
+ struct resource *resource;
/* Report the PCIe BAR */
- last = &dev->resource[dev->resources];
resource = find_resource(dev, 0xcf);
if (resource) {
report_resource_stored(dev, resource, "<mmconfig>");
static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
- pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
- ((device & 0xffff) << 16) | (vendor & 0xffff));
+ if (!vendor || !device) {
+ pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+ pci_read_config32(dev, PCI_VENDOR_ID));
+ } else {
+ pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+ ((device & 0xffff) << 16) | (vendor & 0xffff));
+ }
}
+#if CONFIG_HAVE_ACPI_RESUME
+extern u8 acpi_slp_type;
+
+static void northbridge_init(struct device *dev)
+{
+ switch (pci_read_config32(dev, SKPAD)) {
+ case 0xcafebabe:
+ printk(BIOS_DEBUG, "Normal boot.\n");
+ acpi_slp_type=0;
+ break;
+ case 0xcafed00d:
+ printk(BIOS_DEBUG, "S3 Resume.\n");
+ acpi_slp_type=3;
+ break;
+ default:
+ printk(BIOS_DEBUG, "Unknown boot method, assuming normal.\n");
+ acpi_slp_type=0;
+ break;
+ }
+}
+#endif
+
static struct pci_operations intel_pci_ops = {
.set_subsystem = intel_set_subsystem,
};
.read_resources = mc_read_resources,
.set_resources = mc_set_resources,
.enable_resources = pci_dev_enable_resources,
- .init = 0,
+#if CONFIG_HAVE_ACPI_RESUME
+ .init = northbridge_init,
+#endif
.scan_bus = 0,
.ops_pci = &intel_pci_ops,
};
static void cpu_bus_init(device_t dev)
{
- initialize_cpus(&dev->link[0]);
+ initialize_cpus(dev->link_list);
}
static void cpu_bus_noop(device_t dev)
projects / coreboot.git / blobdiff