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#include <console/console.h>
#include <device/device.h>
#include <device/smbus.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <cpu/x86/msr.h>
#include <reset.h>
#include <delay.h>
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(BIOS_DEBUG, "\n%02x:",i);
printk(BIOS_DEBUG, " %02x",byte);
}
printk(BIOS_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(BIOS_DEBUG, "\n %08x:",i);
printk(BIOS_DEBUG, " %02x",(unsigned char)*((unsigned char *)i));
}
printk(BIOS_DEBUG, " %02x\n",(unsigned char)*((unsigned char *)i));
}
static void print_pci_regs_all(void)
{
struct device *dev;
unsigned bus, device, function;
for(bus=0; bus<256; bus++) {
for(device=0; device<=0x1f; device++) {
for (function=0; function<=7; function++){
unsigned devfn;
devfn = PCI_DEVFN(device, function);
dev = dev_find_slot(bus, devfn);
if(!dev) {
continue;
}
if(!dev->enabled) {
continue;
}
printk(BIOS_DEBUG, "\n%02x:%02x:%02x aka %s",
bus, device, function, dev_path(dev));
print_pci_regs(dev);
}
}
}
}
static void print_cpuid(void)
{
msr_t msr;
unsigned index;
unsigned eax, ebx, ecx, edx;
index = 0x80000007;
printk(BIOS_DEBUG, "calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
printk(BIOS_DEBUG, "cpuid[%08x]: %08x %08x %08x %08x\n",
index, eax, ebx, ecx, edx);
if (edx & (3 << 1)) {
index = 0xC0010042;
printk(BIOS_DEBUG, "Reading msr: 0x%08x\n", index);
msr = rdmsr(index);
printk(BIOS_DEBUG, "msr[0x%08x]: 0x%08x%08x\n",
index, msr.hi, msr.lo);
}
}
static void print_smbus_regs(struct device *dev)
{
int j;
printk(BIOS_DEBUG, "smbus: %s[%d]->", dev_path(dev->bus->dev), dev->bus->link_num);
printk(BIOS_DEBUG, "%s", dev_path(dev));
for(j = 0; j < 256; j++) {
int status;
unsigned char byte;
status = smbus_read_byte(dev, j);
if (status < 0) {
// printk(BIOS_DEBUG, "bad device status= %08x\n", status);
break;
}
if ((j & 0xf) == 0) {
printk(BIOS_DEBUG, "\n%02x: ", j);
}
byte = status & 0xff;
printk(BIOS_DEBUG, "%02x ", byte);
}
printk(BIOS_DEBUG, "\n");
}
static void print_smbus_regs_all(struct device *dev)
{
struct device *child;
struct bus *link;
if (dev->enabled && dev->path.type == DEVICE_PATH_I2C)
{
// Here don't need to call smbus_set_link, because we scan it from top to down
if( dev->bus->dev->path.type == DEVICE_PATH_I2C) { // it's under i2c MUX so set mux at first
if(ops_smbus_bus(get_pbus_smbus(dev->bus->dev))) {
if(dev->bus->dev->ops && dev->bus->dev->ops->set_link)
dev->bus->dev->ops->set_link(dev->bus->dev, dev->bus->link_num);
}
}
if(ops_smbus_bus(get_pbus_smbus(dev))) print_smbus_regs(dev);
}
for(link = dev->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling) {
print_smbus_regs_all(child);
}
}
}
static void print_msr_dualcore(void)
{
msr_t msr;
unsigned index;
unsigned eax, ebx, ecx, edx;
index = 0x80000008;
printk(BIOS_DEBUG, "calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
printk(BIOS_DEBUG, "cpuid[%08x]: %08x %08x %08x %08x\n",
index, eax, ebx, ecx, edx);
printk(BIOS_DEBUG, "core number %d\n", ecx & 0xff);
index = 0xc001001f;
printk(BIOS_DEBUG, "Reading msr: 0x%08x\n", index);
msr = rdmsr(index);
printk(BIOS_DEBUG, "msr[0x%08x]: 0x%08x%08x bit 54 is %d\n",
index, msr.hi, msr.lo, (msr.hi>> (54-32)) & 1);
#if 0
msr.hi |= (1<<(54-32));
wrmsr(index, msr);
msr = rdmsr(index);
printk(BIOS_DEBUG, "msr[0x%08x]: 0x%08x%08x\n",
index, msr.hi, msr.lo);
#endif
}
static void print_cache_size(void)
{
unsigned index;
unsigned int n, eax, ebx, ecx, edx;
index = 0x80000000;
printk(BIOS_DEBUG, "calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
n = eax;
if (n >= 0x80000005) {
index = 0x80000005;
printk(BIOS_DEBUG, "calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
printk(BIOS_DEBUG, "CPU: L1 I Cache: %dK (%d bytes/line), D cache %dK (%d bytes/line)\n",
edx>>24, edx&0xFF, ecx>>24, ecx&0xFF);
}
if (n >= 0x80000006) {
index = 0x80000006;
printk(BIOS_DEBUG, "calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
printk(BIOS_DEBUG, "CPU: L2 Cache: %dK (%d bytes/line)\n",
ecx >> 16, ecx & 0xFF);
}
}
struct tsc_struct {
unsigned lo;
unsigned hi;
};
typedef struct tsc_struct tsc_t;
static tsc_t rdtsc(void)
{
tsc_t res;
asm volatile(
"rdtsc"
: "=a" (res.lo), "=d"(res.hi) /* outputs */
);
return res;
}
static void print_tsc(void) {
tsc_t tsc;
tsc = rdtsc();
printk(BIOS_DEBUG, "tsc: 0x%08x%08x\n",
tsc.hi, tsc.lo);
udelay(1);
tsc = rdtsc();
printk(BIOS_DEBUG, "tsc: 0x%08x%08x after udelay(1) \n",
tsc.hi, tsc.lo);
}
static void debug_init(device_t dev)
{
device_t parent;
if (!dev->enabled)
return;
switch(dev->path.pnp.device) {
case 0:
parent = dev->bus->dev;
printk(BIOS_DEBUG, "DEBUG: %s : %s\n", dev_path(parent), dev_name(parent));
break;
case 1:
print_pci_regs_all();
break;
case 2:
print_mem();
break;
case 3:
print_cpuid();
break;
case 4:
print_smbus_regs_all(&dev_root);
break;
case 5:
print_msr_dualcore();
break;
case 6:
print_cache_size();
break;
case 7:
print_tsc();
break;
case 8:
hard_reset();
break;
}
}
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 void enable_dev(struct device *dev)
{
dev->ops = &debug_operations;
}
struct chip_operations drivers_generic_debug_ops = {
CHIP_NAME("Debug device")
.enable_dev = enable_dev,
};
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