| Olivier Deprez | 7cd64d1 | 2020-01-23 11:24:33 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
| 8 | |
| 9 | #include <common/debug.h> |
| 10 | #include <common/fdt_wrappers.h> |
| 11 | #include <drivers/io/io_storage.h> |
| 12 | #include <lib/object_pool.h> |
| 13 | #include <libfdt.h> |
| 14 | #include <plat/arm/common/arm_fconf_getter.h> |
| 15 | #include <plat/arm/common/arm_fconf_io_storage.h> |
| 16 | #include <plat/arm/common/fconf_arm_sp_getter.h> |
| 17 | #include <platform_def.h> |
| 18 | #include <tools_share/firmware_image_package.h> |
| 19 | |
| 20 | #ifdef IMAGE_BL2 |
| 21 | |
| 22 | struct arm_sp_t arm_sp; |
| 23 | |
| 24 | int fconf_populate_arm_sp(uintptr_t config) |
| 25 | { |
| 26 | int sp_node, node, err; |
| 27 | union uuid_helper_t uuid_helper; |
| 28 | |
| 29 | /* As libfdt use void *, we can't avoid this cast */ |
| 30 | const void *dtb = (void *)config; |
| 31 | |
| 32 | /* Assert the node offset point to "arm,sp" compatible property */ |
| 33 | const char *compatible_str = "arm,sp"; |
| 34 | |
| 35 | node = fdt_node_offset_by_compatible(dtb, -1, compatible_str); |
| 36 | if (node < 0) { |
| 37 | ERROR("FCONF: Can't find %s in dtb\n", compatible_str); |
| 38 | return node; |
| 39 | } |
| 40 | |
| 41 | fdt_for_each_subnode(sp_node, dtb, node) { |
| 42 | err = fdtw_read_array(dtb, sp_node, "uuid", 4, |
| 43 | &uuid_helper.word); |
| 44 | if (err < 0) { |
| 45 | ERROR("FCONF: cannot read SP uuid\n"); |
| 46 | return -1; |
| 47 | } |
| 48 | |
| 49 | arm_sp.uuids[arm_sp.number_of_sp] = uuid_helper; |
| 50 | |
| 51 | err = fdtw_read_cells(dtb, sp_node, "load-address", 1, |
| 52 | &arm_sp.load_addr[arm_sp.number_of_sp]); |
| 53 | if (err < 0) { |
| 54 | ERROR("FCONF: cannot read SP load address\n"); |
| 55 | return -1; |
| 56 | } |
| 57 | |
| 58 | VERBOSE("FCONF: %s UUID %x-%x-%x-%x load_addr=%lx\n", |
| 59 | __func__, |
| 60 | uuid_helper.word[0], |
| 61 | uuid_helper.word[1], |
| 62 | uuid_helper.word[2], |
| 63 | uuid_helper.word[3], |
| 64 | arm_sp.load_addr[arm_sp.number_of_sp]); |
| 65 | |
| 66 | arm_sp.number_of_sp++; |
| 67 | |
| 68 | if (arm_sp.number_of_sp >= MAX_SP_IDS) { |
| 69 | ERROR("FCONF: reached max number of SPs\n"); |
| 70 | return -1; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | if ((sp_node < 0) && (sp_node != -FDT_ERR_NOTFOUND)) { |
| 75 | ERROR("%d: fdt_for_each_subnode(): %d\n", __LINE__, node); |
| 76 | return sp_node; |
| 77 | } |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | FCONF_REGISTER_POPULATOR(arm_sp, fconf_populate_arm_sp); |
| 83 | |
| 84 | #endif /* IMAGE_BL2 */ |