system76-coreboot/src/northbridge/intel/e7501/debug.c

/*
 * generic debug code, used by mainboard specific romstage.c
 *
 */
#if 1
static void print_debug_pci_dev(unsigned dev)
{
	printk(BIOS_DEBUG, "PCI: %02x:%02x.%x",
		(dev >> 16) & 0xff, (dev >> 11) & 0x1f, (dev >> 8) & 7);
}

static inline void print_pci_devices(void)
{
	device_t dev;
	for (dev = PCI_DEV(0, 0, 0);
		dev <= PCI_DEV(0xff, 0x1f, 0x7);
		dev += PCI_DEV(0,0,1)) {
		uint32_t id;
		id = pci_read_config32(dev, PCI_VENDOR_ID);
		if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) ||
			(((id >> 16) & 0xffff) == 0xffff) ||
			(((id >> 16) & 0xffff) == 0x0000)) {
			continue;
		}
		print_debug_pci_dev(dev);
		printk(BIOS_DEBUG, "\n");
	}
}

static void dump_pci_device(unsigned dev)
{
	int i;
	print_debug_pci_dev(dev);

	for (i = 0; i < 256; i++) {
		unsigned char val;
		if ((i & 0x0f) == 0)
                        printk(BIOS_DEBUG, "\n%02x:",i);
		val = pci_read_config8(dev, i);
		printk(BIOS_DEBUG, " %02x", val);
	}
	printk(BIOS_DEBUG, "\n");
}

static inline void dump_pci_devices(void)
{
	device_t dev;
	for (dev = PCI_DEV(0, 0, 0);
		dev <= PCI_DEV(0xff, 0x1f, 0x7);
		dev += PCI_DEV(0,0,1)) {
		uint32_t id;
		id = pci_read_config32(dev, PCI_VENDOR_ID);
		if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) ||
			(((id >> 16) & 0xffff) == 0xffff) ||
			(((id >> 16) & 0xffff) == 0x0000)) {
			continue;
		}
		dump_pci_device(dev);
	}
}

static inline void dump_pci_devices_on_bus(unsigned busn)
{
        device_t dev;
        for (dev = PCI_DEV(busn, 0, 0);
                dev <= PCI_DEV(busn, 0x1f, 0x7);
                dev += PCI_DEV(0,0,1)) {
                uint32_t id;
                id = pci_read_config32(dev, PCI_VENDOR_ID);
                if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) ||
                        (((id >> 16) & 0xffff) == 0xffff) ||
                        (((id >> 16) & 0xffff) == 0x0000)) {
                        continue;
                }
                dump_pci_device(dev);
        }
}

static inline void dump_spd_registers(const struct mem_controller *ctrl)
{
	int i;
	printk(BIOS_DEBUG, "\n");
	for (i = 0; i < 4; i++) {
		unsigned device;
		device = ctrl->channel0[i];
		if (device) {
			int j;
			printk(BIOS_DEBUG, "dimm: %02x.0: %02x", i, device);
			for (j = 0; j < 128; j++) {
				int status;
				unsigned char byte;
				if ((j & 0xf) == 0)
					printk(BIOS_DEBUG, "\n%02x: ", j);
				status = smbus_read_byte(device, j);
				if (status < 0) {
					break;
				}
				byte = status & 0xff;
				printk(BIOS_DEBUG, "%02x ", byte);
			}
			printk(BIOS_DEBUG, "\n");
		}
		device = ctrl->channel1[i];
		if (device) {
			int j;
                        printk(BIOS_DEBUG, "dimm: %02x.1: %02x", i, device);
			for (j = 0; j < 128; j++) {
				int status;
				unsigned char byte;
				if ((j & 0xf) == 0)
                                        printk(BIOS_DEBUG, "\n%02x: ", j);
				status = smbus_read_byte(device, j);
				if (status < 0) {
					break;
				}
				byte = status & 0xff;
                                printk(BIOS_DEBUG, "%02x ", byte);
			}
			printk(BIOS_DEBUG, "\n");
		}
	}
}
static inline void dump_smbus_registers(void)
{
	unsigned device;
        printk(BIOS_DEBUG, "\n");
        for (device = 1; device < 0x80; device++) {
                int j;
		if ( smbus_read_byte(device, 0) < 0 ) continue;
		printk(BIOS_DEBUG, "smbus: %02x", device);
                for (j = 0; j < 256; j++) {
                	int status;
                        unsigned char byte;
                        status = smbus_read_byte(device, j);
                        if (status < 0) {
				break;
                        }
                        if ((j & 0xf) == 0)
				printk(BIOS_DEBUG, "\n%02x: ",j);
                        byte = status & 0xff;
                        printk(BIOS_DEBUG, "%02x ", byte);
                }
                printk(BIOS_DEBUG, "\n");
	}
}

static inline void dump_io_resources(unsigned port)
{

	int i;
	printk(BIOS_DEBUG, "%04x:\n", port);
        for (i=0;i<256;i++) {
                uint8_t val;
                if ((i & 0x0f) == 0)
			printk(BIOS_DEBUG, "%02x:", i);
                val = inb(port);
		printk(BIOS_DEBUG, " %02x",val);
                if ((i & 0x0f) == 0x0f) {
                        printk(BIOS_DEBUG, "\n");
                }
		port++;
        }
}

static inline void dump_mem(unsigned start, unsigned end)
{
        unsigned i;
	printk(BIOS_DEBUG, "dump_mem:");
        for (i=start;i<end;i++) {
		if ((i & 0xf)==0)
			printk(BIOS_DEBUG, "\n%08x:", i);
		printk(BIOS_DEBUG, " %02x", (unsigned char)*((unsigned char *)i));
        }
        printk(BIOS_DEBUG, "\n");
 }
#endif