diff options
Diffstat (limited to 'src/vendorcode/google/chromeos/cros_vpd.c')
| -rw-r--r-- | src/vendorcode/google/chromeos/cros_vpd.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/src/vendorcode/google/chromeos/cros_vpd.c b/src/vendorcode/google/chromeos/cros_vpd.c deleted file mode 100644 index d0e2cc1ef9..0000000000 --- a/src/vendorcode/google/chromeos/cros_vpd.c +++ /dev/null @@ -1,226 +0,0 @@ -/* - * 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 <stdlib.h> -#include <string.h> -#include <timestamp.h> - -#include "cros_vpd.h" -#include "lib_vpd.h" -#include "vpd_tables.h" - -/* Currently we only support Google VPD 2.0, which has a fixed offset. */ -enum { - GOOGLE_VPD_2_0_OFFSET = 0x600, - CROSVPD_CBMEM_MAGIC = 0x43524f53, - CROSVPD_CBMEM_VERSION = 0x0001, -}; - -struct vpd_gets_arg { - const uint8_t *key; - const uint8_t *value; - int32_t key_len, value_len; - int matched; -}; - -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). - */ -}; - -/* returns the size of data in a VPD 2.0 formatted fmap region, or 0 */ -static int32_t get_vpd_size(const char *fmap_name, int32_t *base) -{ - struct google_vpd_info info; - struct region_device vpd; - int32_t size; - - if (fmap_locate_area_as_rdev(fmap_name, &vpd)) { - printk(BIOS_ERR, "%s: No %s FMAP section.\n", __func__, - fmap_name); - return 0; - } - - size = region_device_sz(&vpd); - - if ((size < GOOGLE_VPD_2_0_OFFSET + sizeof(info)) || - rdev_chain(&vpd, &vpd, GOOGLE_VPD_2_0_OFFSET, - size - GOOGLE_VPD_2_0_OFFSET)) { - printk(BIOS_ERR, "%s: Too small (%d) for Google VPD 2.0.\n", - __func__, size); - return 0; - } - - /* Try if we can find a google_vpd_info, otherwise read whole VPD. */ - if (rdev_readat(&vpd, &info, *base, sizeof(info)) != sizeof(info)) { - printk(BIOS_ERR, "ERROR: Failed to read %s header.\n", - fmap_name); - return 0; - } - - if (memcmp(info.header.magic, VPD_INFO_MAGIC, sizeof(info.header.magic)) - == 0 && size >= info.size + sizeof(info)) { - *base += sizeof(info); - size = info.size; - } else if (info.header.tlv.type == VPD_TYPE_TERMINATOR || - info.header.tlv.type == VPD_TYPE_IMPLICIT_TERMINATOR) { - printk(BIOS_WARNING, "WARNING: %s is uninitialized or empty.\n", - fmap_name); - size = 0; - } else { - size -= GOOGLE_VPD_2_0_OFFSET; - } - - return size; -} - -static void cbmem_add_cros_vpd(int is_recovery) -{ - struct region_device vpd; - struct vpd_cbmem *cbmem; - int32_t ro_vpd_base = 0, rw_vpd_base = 0; - int32_t ro_vpd_size, rw_vpd_size; - - timestamp_add_now(TS_START_COPYVPD); - - ro_vpd_size = get_vpd_size("RO_VPD", &ro_vpd_base); - rw_vpd_size = get_vpd_size("RW_VPD", &rw_vpd_base); - - /* no VPD at all? nothing to do then */ - if ((ro_vpd_size == 0) && (rw_vpd_size == 0)) - return; - - cbmem = cbmem_add(CBMEM_ID_VPD, sizeof(*cbmem) + ro_vpd_size + - rw_vpd_size); - if (!cbmem) { - printk(BIOS_ERR, "%s: Failed to allocate CBMEM (%u+%u).\n", - __func__, ro_vpd_size, rw_vpd_size); - return; - } - - cbmem->magic = CROSVPD_CBMEM_MAGIC; - cbmem->version = CROSVPD_CBMEM_VERSION; - cbmem->ro_size = 0; - cbmem->rw_size = 0; - - if (ro_vpd_size) { - if (fmap_locate_area_as_rdev("RO_VPD", &vpd)) { - /* shouldn't happen, but let's be extra defensive */ - printk(BIOS_ERR, "%s: No RO_VPD FMAP section.\n", - __func__); - return; - } - rdev_chain(&vpd, &vpd, GOOGLE_VPD_2_0_OFFSET, - region_device_sz(&vpd) - GOOGLE_VPD_2_0_OFFSET); - - - if (rdev_readat(&vpd, cbmem->blob, ro_vpd_base, ro_vpd_size) == - ro_vpd_size) { - cbmem->ro_size = ro_vpd_size; - } else { - printk(BIOS_ERR, - "%s: Reading RO_VPD FMAP section failed.\n", - __func__); - ro_vpd_size = 0; - } - timestamp_add_now(TS_END_COPYVPD_RO); - } - - if (rw_vpd_size) { - if (fmap_locate_area_as_rdev("RW_VPD", &vpd)) { - /* shouldn't happen, but let's be extra defensive */ - printk(BIOS_ERR, "%s: No RW_VPD FMAP section.\n", - __func__); - return; - } - rdev_chain(&vpd, &vpd, GOOGLE_VPD_2_0_OFFSET, - region_device_sz(&vpd) - GOOGLE_VPD_2_0_OFFSET); - - if (rdev_readat(&vpd, cbmem->blob + ro_vpd_size, rw_vpd_base, - rw_vpd_size) == rw_vpd_size) { - cbmem->rw_size = rw_vpd_size; - } else { - printk(BIOS_ERR, - "%s: Reading RW_VPD FMAP section failed.\n", - __func__); - } - timestamp_add_now(TS_END_COPYVPD_RW); - } -} - -static int vpd_gets_callback(const uint8_t *key, int32_t key_len, - const uint8_t *value, int32_t value_len, - void *arg) -{ - struct vpd_gets_arg *result = (struct vpd_gets_arg *)arg; - if (key_len != result->key_len || - memcmp(key, result->key, key_len) != 0) - /* Returns VPD_OK to continue parsing. */ - return VPD_OK; - - result->matched = 1; - result->value = value; - result->value_len = value_len; - /* Returns VPD_FAIL to stop parsing. */ - return VPD_FAIL; -} - -const void *cros_vpd_find(const char *key, int *size) -{ - struct vpd_gets_arg arg = {0}; - int consumed = 0; - const struct vpd_cbmem *vpd; - - vpd = cbmem_find(CBMEM_ID_VPD); - if (!vpd || !vpd->ro_size) - return NULL; - - arg.key = (const uint8_t *)key; - arg.key_len = strlen(key); - - while (VPD_OK == decodeVpdString(vpd->ro_size, vpd->blob, &consumed, - vpd_gets_callback, &arg)) { - /* Iterate until found or no more entries. */ - } - - if (!arg.matched) - return NULL; - - *size = arg.value_len; - return arg.value; -} - -char *cros_vpd_gets(const char *key, char *buffer, int size) -{ - const void *string_address; - int string_size; - - string_address = cros_vpd_find(key, &string_size); - - if (!string_address) - return NULL; - - if (size > (string_size + 1)) { - memcpy(buffer, string_address, string_size); - buffer[string_size] = '\0'; - } else { - memcpy(buffer, string_address, size - 1); - buffer[size - 1] = '\0'; - } - return buffer; -} - -RAMSTAGE_CBMEM_INIT_HOOK(cbmem_add_cros_vpd) |