src/northbridge/amd/pi/00730F01/dimmSpd.c

/* SPDX-License-Identifier: GPL-2.0-only */

#include <commonlib/helpers.h>
#include <device/pci_def.h>
#include <device/device.h>

/* warning: Porting.h includes an open #pragma pack(1) */
#include <Porting.h>
#include <AGESA.h>
#include "chip.h"

#include <northbridge/amd/pi/dimmSpd.h>

AGESA_STATUS AmdMemoryReadSPD(UINT32 unused1, UINTN unused2, AGESA_READ_SPD_PARAMS *info)
{
	int spdAddress;
	DEVTREE_CONST struct device *dev = pcidev_on_root(0x18, 2);

	if (dev == NULL)
		return AGESA_ERROR;

	DEVTREE_CONST struct northbridge_amd_pi_00730F01_config *config = dev->chip_info;

	if (config == NULL)
		return AGESA_ERROR;

	if (info->SocketId >= ARRAY_SIZE(config->spdAddrLookup))
		return AGESA_ERROR;
	if (info->MemChannelId >= ARRAY_SIZE(config->spdAddrLookup[0]))
		return AGESA_ERROR;
	if (info->DimmId >= ARRAY_SIZE(config->spdAddrLookup[0][0]))
		return AGESA_ERROR;

	spdAddress = config->spdAddrLookup
		[info->SocketId] [info->MemChannelId] [info->DimmId];

	if (spdAddress == 0)
		return AGESA_ERROR;

	int err = hudson_readSpd(spdAddress, (void *)info->Buffer, 128);
	if (err)
		return AGESA_ERROR;
	return AGESA_SUCCESS;
}