1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 #include <trusty/arm_ffa.h>
26 #include <trusty/trusty_mem.h>
27
28 #define NS_PTE_MAIR_SHIFT 48
29 #define NS_MAIR_NORMAL_UNCACHED 0x44 /* uncached */
30
trusty_encode_page_info(struct ns_mem_page_info * inf,void * va)31 int trusty_encode_page_info(struct ns_mem_page_info* inf, void* va) {
32 /* Always report normal uncached memory as we are running without the MMU */
33 inf->paddr = (uint64_t)va;
34 inf->ffa_mem_attr = FFA_MEM_ATTR_NORMAL_MEMORY_UNCACHED;
35 inf->ffa_mem_perm = FFA_MEM_PERM_RW;
36 inf->attr = (uint64_t)va |
37 ((uint64_t)NS_MAIR_NORMAL_UNCACHED << NS_PTE_MAIR_SHIFT);
38
39 return 0;
40 }
41