blob: aaf492e7372738b8d63864bd602daead9b603b02 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/cppc.h>
#include <ccx_cppc_data.h>
#include <console/console.h>
#include <FspGuids.h>
#include <fsp/util.h>
#include <types.h>
static enum cb_err get_ccx_cppc_data_hob(const struct fsp_ccx_cppc_data **cppc_data)
{
static const struct fsp_ccx_cppc_data *cppc_data_cache;
size_t hob_size = 0;
const struct fsp_ccx_cppc_data *hob;
if (cppc_data_cache) {
*cppc_data = cppc_data_cache;
return CB_SUCCESS;
}
hob = fsp_find_extension_hob_by_guid(AMD_FSP_CCX_CPPC_DATA_HOB_GUID.b, &hob_size);
if (hob == NULL || hob_size < sizeof(struct fsp_ccx_cppc_data)) {
printk(BIOS_ERR, "Couldn't find CCX CPPC data HOB.\n");
return CB_ERR;
}
if (hob->version != FSP_CCX_CPPC_DATA_VERSION) {
printk(BIOS_ERR, "Unexpected CCX CPPC data HOB version.\n");
return CB_ERR;
}
cppc_data_cache = hob;
*cppc_data = cppc_data_cache;
return CB_SUCCESS;
}
enum cb_err get_ccx_cppc_min_frequency(uint32_t *freq)
{
const struct fsp_ccx_cppc_data *cppc_data = NULL;
if (get_ccx_cppc_data_hob(&cppc_data) != CB_SUCCESS)
return CB_ERR;
*freq = cppc_data->ccx_cppc_min_speed;
printk(BIOS_SPEW, "CCX CPPC min speed: %d MHz\n", *freq);
return CB_SUCCESS;
}
enum cb_err get_ccx_cppc_nom_frequency(uint32_t *freq)
{
const struct fsp_ccx_cppc_data *cppc_data = NULL;
if (get_ccx_cppc_data_hob(&cppc_data) != CB_SUCCESS)
return CB_ERR;
*freq = cppc_data->ccx_cppc_nom_speed;
printk(BIOS_SPEW, "CCX CPPC nom speed: %d MHz\n", *freq);
return CB_SUCCESS;
}