| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootblock_common.h> |
| #include <console/console.h> |
| #include <soc/psp_transfer.h> |
| #include <symbols.h> |
| #include <timestamp.h> |
| |
| void boot_with_psp_timestamp(uint64_t base_timestamp) |
| { |
| const struct transfer_info_struct *info = (const struct transfer_info_struct *) |
| (void *)(uintptr_t)_transfer_buffer; |
| |
| if (!transfer_buffer_valid(info) || info->timestamp == 0) |
| return; |
| |
| replay_transfer_buffer_cbmemc(); |
| |
| /* |
| * info->timestamp is PSP's timestamp (in microseconds) |
| * when x86 processor is released. |
| */ |
| uint64_t psp_last_ts = info->timestamp; |
| |
| int i; |
| struct timestamp_table *psp_ts_table = |
| (struct timestamp_table *)(void *) |
| ((uintptr_t)_transfer_buffer + info->timestamp_offset); |
| /* new base_timestamp will be offset for all PSP timestamps. */ |
| base_timestamp -= psp_last_ts; |
| |
| for (i = 0; i < psp_ts_table->num_entries; i++) { |
| struct timestamp_entry *tse = &psp_ts_table->entries[i]; |
| /* |
| * We ignore the time between x86 processor release and bootblock. |
| * Since timestamp_add subtracts base_time, we first add old base_time |
| * to make it absolute then add base_timestamp again since |
| * it'll be a new base_time. |
| * |
| * We don't need to convert unit since both PSP and coreboot |
| * will use 1us granularity. |
| * |
| */ |
| tse->entry_stamp += psp_ts_table->base_time + base_timestamp; |
| } |
| |
| bootblock_main_with_timestamp(base_timestamp, psp_ts_table->entries, |
| psp_ts_table->num_entries); |
| } |