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path: root/src/northbridge/amd/amdk8/reset_test.c
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#include <stdint.h>
#define NODE_ID		0x60
#define	HT_INIT_CONTROL 0x6c

#define HTIC_ColdR_Detect  (1<<4)
#define HTIC_BIOSR_Detect  (1<<5)
#define HTIC_INIT_Detect   (1<<6)


static int cpu_init_detected(void)
{
	unsigned long dcl;
	int cpu_init;

	unsigned long htic;

	htic = pci_read_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL);
#if 0
	print_debug("htic: ");
	print_debug_hex32(htic);
	print_debug("\r\n");

	if (!(htic & HTIC_ColdR_Detect)) {
		print_debug("Cold Reset.\r\n");
	}
	if ((htic & HTIC_ColdR_Detect) && !(htic & HTIC_BIOSR_Detect)) {
		print_debug("BIOS generated Reset.\r\n");
	}
	if (htic & HTIC_INIT_Detect) {
		print_debug("Init event.\r\n");
	}
#endif
	cpu_init = (htic & HTIC_INIT_Detect);
	return cpu_init;
}

static void distinguish_cpu_resets(void)
{
	uint32_t htic;
	htic = pci_read_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL);
	htic |= HTIC_ColdR_Detect | HTIC_BIOSR_Detect | HTIC_INIT_Detect;
	pci_write_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL, htic);
}