| Antonio Nino Diaz | 9d602fe | 2016-05-20 14:14:16 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <assert.h> |
| 32 | #include <platform_oid.h> |
| 33 | #include <stdint.h> |
| 34 | #include <string.h> |
| 35 | #include "fvp_def.h" |
| 36 | |
| 37 | /* |
| 38 | * Store a new non-volatile counter value. On some FVP versions, the |
| 39 | * non-volatile counters are RO. On these versions we expect the values in the |
| 40 | * certificates to always match the RO values so that this function is never |
| 41 | * called. |
| 42 | * |
| 43 | * Return: 0 = success, Otherwise = error |
| 44 | */ |
| 45 | int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr) |
| 46 | { |
| 47 | const char *oid; |
| 48 | uint32_t *nv_ctr_addr; |
| 49 | |
| 50 | assert(cookie != NULL); |
| 51 | |
| 52 | oid = (const char *)cookie; |
| 53 | if (strcmp(oid, TRUSTED_FW_NVCOUNTER_OID) == 0) { |
| 54 | nv_ctr_addr = (uint32_t *)TFW_NVCTR_BASE; |
| 55 | } else if (strcmp(oid, NON_TRUSTED_FW_NVCOUNTER_OID) == 0) { |
| 56 | nv_ctr_addr = (uint32_t *)NTFW_CTR_BASE; |
| 57 | } else { |
| 58 | return 1; |
| 59 | } |
| 60 | |
| 61 | *(unsigned int *)nv_ctr_addr = nv_ctr; |
| 62 | |
| 63 | /* Verify that the current value is the one we just wrote. */ |
| 64 | if (nv_ctr != (unsigned int)(*nv_ctr_addr)) |
| 65 | return 1; |
| 66 | |
| 67 | return 0; |
| 68 | } |