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/*
* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#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)
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