| /* SPDX-License-Identifier: BSD-3-Clause */ |
| |
| #include <console/console.h> |
| #include <cbmem.h> |
| #include <fmap.h> |
| #include <string.h> |
| #include <timestamp.h> |
| |
| #include "vpd_tables.h" |
| #include "vpd.h" |
| |
| /* Currently we only support Google VPD 2.0, which has a fixed offset. */ |
| enum { |
| CROSVPD_CBMEM_MAGIC = 0x43524f53, |
| CROSVPD_CBMEM_VERSION = 0x0001, |
| }; |
| |
| struct vpd_cbmem { |
| uint32_t magic; |
| uint32_t version; |
| uint32_t ro_size; |
| uint32_t rw_size; |
| uint8_t blob[0]; |
| /* The blob contains both RO and RW data. It starts with RO (0 .. |
| * ro_size) and then RW (ro_size .. ro_size+rw_size). |
| */ |
| }; |
| |
| static void cbmem_add_cros_vpd(int is_recovery) |
| { |
| struct vpd_cbmem *cbmem; |
| const struct vpd_blob *blob; |
| |
| timestamp_add_now(TS_START_COPYVPD); |
| |
| blob = vpd_load_blob(); |
| |
| /* Return if no VPD at all */ |
| if (blob->ro_size == 0 && blob->rw_size == 0) |
| return; |
| |
| cbmem = cbmem_add(CBMEM_ID_VPD, sizeof(*cbmem) + blob->ro_size + |
| blob->rw_size); |
| if (!cbmem) { |
| printk(BIOS_ERR, "%s: Failed to allocate CBMEM (%u+%u).\n", |
| __func__, blob->ro_size, blob->rw_size); |
| return; |
| } |
| |
| cbmem->magic = CROSVPD_CBMEM_MAGIC; |
| cbmem->version = CROSVPD_CBMEM_VERSION; |
| cbmem->ro_size = blob->ro_size; |
| cbmem->rw_size = blob->rw_size; |
| |
| if (blob->ro_size) { |
| memcpy(cbmem->blob, blob->ro_base, blob->ro_size); |
| timestamp_add_now(TS_END_COPYVPD_RO); |
| } |
| |
| if (blob->rw_size) { |
| memcpy(cbmem->blob + blob->ro_size, blob->rw_base, |
| blob->rw_size); |
| timestamp_add_now(TS_END_COPYVPD_RW); |
| } |
| } |
| |
| void vpd_get_buffers(struct vpd_blob *blob) |
| { |
| const struct vpd_cbmem *vpd; |
| |
| vpd = cbmem_find(CBMEM_ID_VPD); |
| if (!vpd || !vpd->ro_size) |
| return; |
| |
| blob->ro_base = (void *)vpd->blob; |
| blob->ro_size = vpd->ro_size; |
| blob->rw_base = (void *)vpd->blob + vpd->ro_size; |
| blob->rw_size = vpd->rw_size; |
| } |
| |
| RAMSTAGE_CBMEM_INIT_HOOK(cbmem_add_cros_vpd) |