| // SPDX-License-Identifier: BSD-2-Clause |
| /* |
| * Copyright (C) 2019, Theobroma Systems Design und Consulting GmbH |
| */ |
| |
| #include <common.h> |
| #include <io.h> |
| #include <kernel/panic.h> |
| #include <mm/core_memprot.h> |
| #include <platform.h> |
| #include <platform_config.h> |
| |
| #define SGRF_DDRRGN_CON0_16(n) ((n) * 4) |
| #define SGRF_DDR_RGN_0_16_WMSK GENMASK_32(11, 0) |
| |
| register_phys_mem_pgdir(MEM_AREA_IO_SEC, SGRF_BASE, SGRF_SIZE); |
| |
| int platform_secure_ddr_region(int rgn, paddr_t st, size_t sz) |
| { |
| vaddr_t sgrf_base = (vaddr_t)phys_to_virt_io(SGRF_BASE); |
| paddr_t ed = st + sz; |
| uint32_t st_mb = st / SIZE_M(1); |
| uint32_t ed_mb = ed / SIZE_M(1); |
| |
| if (!sgrf_base) |
| panic(); |
| |
| assert(rgn <= 7); |
| assert(st < ed); |
| |
| /* Check aligned 1MB */ |
| assert(st % SIZE_M(1) == 0); |
| assert(ed % SIZE_M(1) == 0); |
| |
| DMSG("protecting region %d: 0x%lx-0x%lx\n", rgn, st, ed); |
| |
| /* Set ddr region addr start */ |
| io_write32(sgrf_base + SGRF_DDRRGN_CON0_16(rgn), |
| BITS_WITH_WMASK(st_mb, SGRF_DDR_RGN_0_16_WMSK, 0)); |
| |
| /* Set ddr region addr end */ |
| io_write32(sgrf_base + SGRF_DDRRGN_CON0_16(rgn + 8), |
| BITS_WITH_WMASK((ed_mb - 1), SGRF_DDR_RGN_0_16_WMSK, 0)); |
| |
| io_write32(sgrf_base + SGRF_DDRRGN_CON0_16(16), |
| BIT_WITH_WMSK(rgn)); |
| |
| return 0; |
| } |