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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <commonlib/helpers.h>
   4 #include <device/pci_def.h>
   5 #include <device/device.h>
   6
   7 /* warning: Porting.h includes an open #pragma pack(1) */
   8 #include <Porting.h>
   9 #include <AGESA.h>
  10 #include "chip.h"
  11
  12 #include <northbridge/amd/pi/dimmSpd.h>
  13
  14 AGESA_STATUS AmdMemoryReadSPD(UINT32 unused1, UINTN unused2, AGESA_READ_SPD_PARAMS *info)
  15 {
  16         int spdAddress;
  17         DEVTREE_CONST struct device *dev = pcidev_on_root(0x18, 2);
  18
  19         if (dev == NULL)
  20                 return AGESA_ERROR;
  21
  22         DEVTREE_CONST struct northbridge_amd_pi_00730F01_config *config = dev->chip_info;
  23
  24         if (config == NULL)
  25                 return AGESA_ERROR;
  26
  27         if (info->SocketId >= ARRAY_SIZE(config->spdAddrLookup))
  28                 return AGESA_ERROR;
  29         if (info->MemChannelId >= ARRAY_SIZE(config->spdAddrLookup[0]))
  30                 return AGESA_ERROR;
  31         if (info->DimmId >= ARRAY_SIZE(config->spdAddrLookup[0][0]))
  32                 return AGESA_ERROR;
  33
  34         spdAddress = config->spdAddrLookup
  35                 [info->SocketId] [info->MemChannelId] [info->DimmId];
  36
  37         if (spdAddress == 0)
  38                 return AGESA_ERROR;
  39
  40         int err = hudson_readSpd(spdAddress, (void *)info->Buffer, 128);
  41         if (err)
  42                 return AGESA_ERROR;
  43         return AGESA_SUCCESS;
  44 }