Jason Glenesk | 60875b4 | 2023-03-16 15:28:10 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <console/console.h> |
| 4 | #include <FspGuids.h> |
| 5 | #include <fsp/amd_misc_data.h> |
| 6 | #include <fsp/amd_misc_data_hob.h> |
| 7 | #include <fsp/util.h> |
| 8 | #include <string.h> |
| 9 | #include <types.h> |
| 10 | |
| 11 | static enum cb_err get_amd_misc_data_hob(const struct amd_misc_data **fsp_misc_data, int min_revision) |
| 12 | { |
| 13 | static const struct amd_misc_data *fsp_misc_data_cache; |
| 14 | size_t hob_size = 0; |
| 15 | const struct amd_misc_data *hob; |
| 16 | |
| 17 | if (fsp_misc_data_cache) { |
| 18 | *fsp_misc_data = fsp_misc_data_cache; |
| 19 | return CB_SUCCESS; |
| 20 | } |
| 21 | |
| 22 | hob = fsp_find_extension_hob_by_guid(AMD_MISC_DATA_HOB_GUID.b, &hob_size); |
| 23 | |
| 24 | if (hob == NULL || hob_size < sizeof(struct amd_misc_data)) { |
| 25 | printk(BIOS_ERR, "Couldn't find fsp misc data HOB.\n"); |
| 26 | return CB_ERR; |
| 27 | } |
| 28 | |
| 29 | if (hob->version < min_revision) { |
| 30 | printk(BIOS_ERR, "Unexpected fsp misc data HOB version.\n"); |
| 31 | return CB_ERR; |
| 32 | } |
| 33 | |
| 34 | fsp_misc_data_cache = hob; |
| 35 | *fsp_misc_data = fsp_misc_data_cache; |
| 36 | return CB_SUCCESS; |
| 37 | } |
| 38 | |
| 39 | enum cb_err get_amd_smu_reported_tdp(uint32_t *tdp) |
| 40 | { |
| 41 | const struct amd_misc_data *fsp_misc_data = NULL; |
| 42 | |
| 43 | if (get_amd_misc_data_hob(&fsp_misc_data, AMD_MISC_DATA_VERSION) != CB_SUCCESS) |
| 44 | return CB_ERR; |
| 45 | |
| 46 | *tdp = fsp_misc_data->smu_power_and_thm_limit; |
| 47 | |
| 48 | return CB_SUCCESS; |
| 49 | } |