summaryrefslogtreecommitdiff
path: root/src/mainboard/tyan/s2885/mainboard.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mainboard/tyan/s2885/mainboard.c')
-rw-r--r--src/mainboard/tyan/s2885/mainboard.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/src/mainboard/tyan/s2885/mainboard.c b/src/mainboard/tyan/s2885/mainboard.c
index 3c7583dca9..3da6934b53 100644
--- a/src/mainboard/tyan/s2885/mainboard.c
+++ b/src/mainboard/tyan/s2885/mainboard.c
@@ -5,6 +5,137 @@
#include <device/pci_ops.h>
#include "chip.h"
+#undef DEBUG
+#define DEBUG 0
+#if DEBUG
+
+static void print_pci_regs(struct device *dev)
+{
+ uint8_t byte;
+ int i;
+
+ for(i=0;i<256;i++) {
+ byte = pci_read_config8(dev, i);
+
+ if((i & 0xf)==0) printk_debug("\n%02x:",i);
+ printk_debug(" %02x",byte);
+ }
+ printk_debug("\n");
+
+}
+static void print_mem(void)
+{
+ unsigned int i;
+ unsigned int start = 0xfffff000;
+ for(i=start;i<0xffffffff;i++) {
+ if((i & 0xf)==0) printk_debug("\n %08x:",i);
+ printk_debug(" %02x ",(unsigned char)*((unsigned char *)i));
+ }
+ printk_debug(" %02x \n",(unsigned char)*((unsigned char *)i));
+
+ }
+static void print_pci_regs_all(void)
+{
+ struct device *dev;
+ unsigned char i,j,k;
+
+ for(i=0;i<=15;i++) {
+ for(j=0;j<=0x1f;j++) {
+ for (k=0;k<=6;k++){
+ dev = dev_find_slot(i, PCI_DEVFN(j, k));
+ if(!dev) {
+ continue;
+ }
+ if(!dev->enabled) {
+ continue;
+ }
+ printk_debug("\n%02x:%02x:%02x aka %s",i,j,k, dev_path(dev));
+ print_pci_regs(dev);
+ }
+ }
+ }
+
+}
+
+static void debug_init(device_t dev)
+{
+ unsigned bus;
+ unsigned devfn;
+
+// print_pci_regs_all();
+
+ print_mem();
+#if 0
+ msr_t msr;
+ unsigned index;
+ unsigned eax, ebx, ecx, edx;
+ index = 0x80000007;
+ printk_debug("calling cpuid 0x%08x\n", index);
+ asm volatile(
+ "cpuid"
+ : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
+ : "a" (index)
+ );
+ printk_debug("cpuid[%08x]: %08x %08x %08x %08x\n",
+ index, eax, ebx, ecx, edx);
+ if (edx & (3 << 1)) {
+ index = 0xC0010042;
+ printk_debug("Reading msr: 0x%08x\n", index);
+ msr = rdmsr(index);
+ printk_debug("msr[0x%08x]: 0x%08x%08x\n",
+ index, msr.hi, msr.hi);
+ }
+#endif
+}
+
+static void debug_noop(device_t dummy)
+{
+}
+
+static struct device_operations debug_operations = {
+ .read_resources = debug_noop,
+ .set_resources = debug_noop,
+ .enable_resources = debug_noop,
+ .init = debug_init,
+};
+
+static unsigned int scan_root_bus(device_t root, unsigned int max)
+{
+ struct device_path path;
+ device_t debug;
+ max = root_dev_scan_bus(root, max);
+ path.type = DEVICE_PATH_PNP;
+ path.u.pnp.port = 0;
+ path.u.pnp.device = 0;
+ debug = alloc_dev(&root->link[1], &path);
+ debug->ops = &debug_operations;
+ return max;
+}
+
+
+static void mainboard_init(device_t dev)
+{
+ root_dev_init(dev);
+ // Do sth
+}
+
+static struct device_operations mainboard_operations = {
+ .read_resources = root_dev_read_resources,
+ .set_resources = root_dev_set_resources,
+ .enable_resources = root_dev_enable_resources,
+ .init = mainboard_init,
+ .scan_bus = scan_root_bus,
+};
+
+static void enable_dev(struct device *dev)
+{
+ dev_root.ops = &mainboard_operations;
+}
+#endif
+
struct chip_operations mainboard_tyan_s2885_ops = {
CHIP_NAME("Tyan s2885 mainboard")
+#if DEBUG
+ .enable_dev = enable_dev,
+#endif
};