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/* SPDX-License-Identifier: GPL-2.0-only */
#include <assert.h>
#include <soc/soc_util.h>
#include <stdlib.h>
#include <string.h>
uint8_t get_iiostack_info(struct iiostack_resource *info)
{
size_t hob_size;
const uint8_t fsp_hob_iio_universal_data_guid[16] = FSP_HOB_IIO_UNIVERSAL_DATA_GUID;
const IIO_UDS *hob;
hob = fsp_find_extension_hob_by_guid(
fsp_hob_iio_universal_data_guid, &hob_size);
assert(hob != NULL && hob_size != 0);
// copy IIO Stack info from FSP HOB
info->no_of_stacks = 0;
for (int s = 0; s < hob->PlatformData.numofIIO; ++s) {
for (int x = 0; x < MAX_IIO_STACK; ++x) {
const STACK_RES *ri = &hob->PlatformData.IIO_resource[s].StackRes[x];
// TODO: do we have situation with only bux 0 and one stack?
if (ri->BusBase >= ri->BusLimit)
continue;
assert(info->no_of_stacks < (CONFIG_MAX_SOCKET * MAX_IIO_STACK));
memcpy(&info->res[info->no_of_stacks++], ri, sizeof(STACK_RES));
}
}
return hob->PlatformData.Pci64BitResourceAllocation;
}
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