svn mv src/northbridge/intel/E7520 src/northbridge/intel/e7520

svn mv src/northbridge/intel/E7525 src/northbridge/intel/e7525

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>




git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2478 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 270 insertions, 0 deletions

diff --git a/src/northbridge/intel/e7525/northbridge.c b/src/northbridge/intel/e7525/northbridge.c
new file mode 100644
index 0000000000..2fa6678c0e
--- /dev/null
+++ b/src/northbridge/intel/e7525/northbridge.c
@@ -0,0 +1,270 @@
+#include <console/console.h>
+#include <arch/io.h>
+#include <stdint.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/hypertransport.h>
+#include <stdlib.h>
+#include <string.h>
+#include <bitops.h>
+#include <cpu/cpu.h>
+#include "chip.h"
+#include "northbridge.h"
+#include "e7525.h"
+
+
+static unsigned int max_bus;
+
+static void ram_resource(device_t dev, unsigned long index, 
+	unsigned long basek, unsigned long sizek)
+{
+	struct resource *resource;
+
+	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_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->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;
+}
+
+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;
+	}
+	return tolm;
+}
+
+
+static void pci_domain_set_resources(device_t dev)
+{
+	device_t mc_dev;
+	uint32_t pci_tolm;
+
+        pci_tolm = find_pci_tolm(&dev->link[0]);
+
+#if 1
+	printk_debug("PCI mem marker = %x\n", pci_tolm);
+#endif	
+	/* FIXME Me temporary hack */
+	if(pci_tolm > 0xe0000000)
+		pci_tolm = 0xe0000000;
+	/* Ensure pci_tolm is 128M aligned */
+	pci_tolm &= 0xf8000000;
+	mc_dev = dev->link[0].children;
+	if (mc_dev) {
+		/* Figure out which areas are/should be occupied by RAM.
+		 * This is all computed in kilobytes and converted to/from
+		 * the memory controller right at the edges.
+		 * Having different variables in different units is
+		 * too confusing to get right.  Kilobytes are good up to
+		 * 4 Terabytes of RAM...
+		 */
+		uint16_t tolm_r, remapbase_r, remaplimit_r, remapoffset_r;
+		unsigned long tomk, tolmk;
+		unsigned long remapbasek, remaplimitk, remapoffsetk;
+
+		/* Get the Top of Memory address, units are 128M */
+		tomk = ((unsigned long)pci_read_config16(mc_dev, TOM)) << 17;
+		/* Compute the Top of Low Memory */
+		tolmk = (pci_tolm  & 0xf8000000) >> 10;
+
+		if (tolmk >= tomk) {
+			/* The PCI hole does not overlap memory
+			 * we won't use the remap window.
+			 */
+			tolmk = tomk;
+			remapbasek   = 0x3ff << 16;
+			remaplimitk  = 0 << 16;
+			remapoffsetk = 0 << 16;
+		} 
+		else {
+			/* The PCI memory hole overlaps memory
+			 * setup the remap window.
+			 */
+			/* Find the bottom of the remap window
+			 * is it above 4G?
+			 */
+			remapbasek = 4*1024*1024;
+			if (tomk > remapbasek) {
+				remapbasek = tomk;
+			}
+			/* Find the limit of the remap window */
+			remaplimitk  = (remapbasek + (4*1024*1024 - tolmk) - (1 << 16));
+			/* Find the offset of the remap window from tolm */
+			remapoffsetk = remapbasek - tolmk;
+		}
+		/* Write the ram configruation registers,
+		 * preserving the reserved bits.
+		 */
+		tolm_r = pci_read_config16(mc_dev, 0xc4);
+		tolm_r = ((tolmk >> 17) << 11) | (tolm_r & 0x7ff);
+		pci_write_config16(mc_dev, 0xc4, tolm_r);
+
+		remapbase_r = pci_read_config16(mc_dev, 0xc6);
+		remapbase_r = (remapbasek >> 16) | (remapbase_r & 0xfc00);
+		pci_write_config16(mc_dev, 0xc6, remapbase_r);
+
+		remaplimit_r = pci_read_config16(mc_dev, 0xc8);
+		remaplimit_r = (remaplimitk >> 16) | (remaplimit_r & 0xfc00);
+		pci_write_config16(mc_dev, 0xc8, remaplimit_r);
+
+		remapoffset_r = pci_read_config16(mc_dev, 0xca);
+		remapoffset_r = (remapoffsetk >> 16) | (remapoffset_r & 0xfc00);
+		pci_write_config16(mc_dev, 0xca, remapoffset_r);
+
+		/* Report the memory regions */
+    		ram_resource(dev, 3,   0, 640);
+		ram_resource(dev, 4, 768, tolmk - 768);
+		if (tomk > 4*1024*1024) {
+			ram_resource(dev, 5, 4096*1024, tomk - 4*1024*1024);
+		}
+		if (remaplimitk >= remapbasek) {
+			ram_resource(dev, 6, remapbasek, 
+				(remaplimitk + 64*1024) - remapbasek);
+		}
+	}
+	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], 0, 0xff, max);
+	if (max > max_bus) {
+		max_bus = 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_cf8_conf1, /* Do we want to use the memory mapped space here? */
+};
+
+static void mc_read_resources(device_t dev)
+{
+	struct resource *resource;
+
+	pci_dev_read_resources(dev);
+
+	resource = new_resource(dev, 0xcf);
+	resource->base = 0xe0000000;
+	resource->size = max_bus * 4096*256;
+	resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED |  IORESOURCE_ASSIGNED;
+}
+
+static void mc_set_resources(device_t dev)
+{
+	struct resource *resource, *last;
+
+	last = &dev->resource[dev->resources];
+	resource = find_resource(dev, 0xcf);
+	if (resource) {
+		report_resource_stored(dev, resource, "<mmconfig>");
+	}
+	pci_dev_set_resources(dev);
+}
+
+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));
+}
+
+static struct pci_operations intel_pci_ops = {
+	.set_subsystem = intel_set_subsystem,
+};
+
+static struct device_operations mc_ops = {
+	.read_resources   = mc_read_resources,
+	.set_resources    = mc_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = 0,
+	.scan_bus         = 0,
+	.ops_pci          = &intel_pci_ops,
+};
+
+static struct pci_driver mc_driver __pci_driver = {
+	.ops = &mc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x359e,
+};
+
+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(device_t 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_APIC_CLUSTER) {
+		dev->ops = &cpu_bus_ops;
+	}
+}
+
+struct chip_operations northbridge_intel_e7525_ops = {
+	CHIP_NAME("Intel E7525 Northbridge")
+	.enable_dev = enable_dev,
+};