1 /* 2 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef __POPLAR_LAYOUT_H 8 #define __POPLAR_LAYOUT_H 9 10 /* 11 * Boot memory layout definitions for the HiSilicon Poplar board 12 */ 13 14 /* 15 * When Poplar is powered on, boot ROM loads the initial content of 16 * boot media into low memory, verifies it, and begins executing it 17 * in 32-bit mode. The image loaded is "l-loader.bin", which contains 18 * a small amount code along with an embedded ARM Trusted Firmware 19 * BL1 image. The main purpose of "l-loader" is to prepare the 20 * processor to execute the BL1 image in 64-bit mode, and to trigger 21 * that execution. 22 * 23 * Also embedded in "l-loader.bin" is a FIP image that contains 24 * other ARM Trusted Firmware images: BL2; BL31; and for BL33, 25 * U-Boot. When BL1 executes, it unpacks the BL2 image from the FIP 26 * image into a region of memory set aside to hold it. Similarly, 27 * BL2 unpacks BL31 into memory reserved for it, and unpacks U-Boot 28 * into high memory. 29 * 30 * Because the BL1 code is embedded in "l-loader", its base address 31 * in memory is derived from the base address of the "l-loader" 32 * text section, together with an offset. Memory space for BL2 is 33 * reserved immediately following BL1, and memory space is reserved 34 * for BL31 after that. ARM Trusted Firmware requires each of these 35 * memory regions to be aligned on page boundaries, so the size of 36 * each region is a multiple of a page size (ending in 000). Note 37 * that ARM Trusted Firmware requires the read-only and read-write 38 * regions of memory used for BL1 to be defined separately. 39 * 40 * --------------------- 41 * | (unused memory) | 42 * +-------------------+ - - - - - 43 * | (l-loader text) | \ 44 * +-------------------+ \ 45 * | BL1 (read-only) | \ \ 46 * |- - - - - - - - - -| | | 47 * | BL1 (read-write) | | | 48 * +-------------------+ > BL Memory | 49 * | Reserved for BL2 | | > "l-loader.bin" image 50 * +-------------------+ | | 51 * | Reserved for BL31 | / | 52 * +-------------------+ | 53 * . . . / 54 * +-------------------+ / 55 * | FIP | / 56 * +-------------------+ - - - - - 57 * . . . 58 * | (unused memory) | 59 * . . . 60 * +-------------------+ 61 * |Reserved for U-Boot| 62 * +-------------------+ 63 * . . . 64 * | (unused memory) | 65 * --------------------- 66 * 67 * The size of each of these regions is defined below. The base 68 * address of the "l-loader" TEXT section and the offset of the BL1 69 * image within that serve as anchors for defining the positions of 70 * all other regions. The FIP is placed in a section of its own. 71 * 72 * A "BASE" is the memory address of the start of a region; a "LIMIT" 73 * marks its end. A "SIZE" is the size of a region (in bytes). An 74 * "OFFSET" is an offset to the start of a region relative to the 75 * base of the "l-loader" TEXT section (also a multiple of page size). 76 */ 77 #define LLOADER_TEXT_BASE 0x00001000 /* page aligned */ 78 #define BL1_OFFSET 0x0000D000 /* page multiple */ 79 #define FIP_BASE 0x00040000 80 81 #define BL1_RO_SIZE 0x00008000 /* page multiple */ 82 #define BL1_RW_SIZE 0x00008000 /* page multiple */ 83 #define BL1_SIZE (BL1_RO_SIZE + BL1_RW_SIZE) 84 #define BL2_SIZE 0x0000c000 /* page multiple */ 85 #define BL31_SIZE 0x00014000 86 #define FIP_SIZE 0x00068000 87 88 /* BL1_OFFSET */ /* (Defined above) */ 89 #define BL1_BASE (LLOADER_TEXT_BASE + BL1_OFFSET) 90 #define BL1_LIMIT (BL1_BASE + BL1_SIZE) 91 92 #define BL1_RO_OFFSET (BL1_OFFSET) 93 #define BL1_RO_BASE (LLOADER_TEXT_BASE + BL1_RO_OFFSET) 94 #define BL1_RO_LIMIT (BL1_RO_BASE + BL1_RO_SIZE) 95 96 #define BL1_RW_OFFSET (BL1_RO_OFFSET + BL1_RO_SIZE) 97 #define BL1_RW_BASE (LLOADER_TEXT_BASE + BL1_RW_OFFSET) 98 #define BL1_RW_LIMIT (BL1_RW_BASE + BL1_RW_SIZE) 99 100 #define BL2_OFFSET (BL1_OFFSET + BL1_SIZE) 101 #define BL2_BASE (LLOADER_TEXT_BASE + BL2_OFFSET) 102 #define BL2_LIMIT (BL2_BASE + BL2_SIZE) 103 104 #define BL31_OFFSET (BL2_OFFSET + BL2_SIZE) 105 #define BL31_BASE (LLOADER_TEXT_BASE + BL31_OFFSET) 106 #define BL31_LIMIT (BL31_BASE + BL31_SIZE) 107 108 #endif /* !__POPLAR_LAYOUT_H */ 109