| /* |
| * (C) Copyright 2007-2011 |
| * Allwinner Technology Co., Ltd. <www.allwinnertech.com> |
| * Tom Cubie <tangliang@allwinnertech.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| #ifndef _ASM_ARCH_SPL_H_ |
| #define _ASM_ARCH_SPL_H_ |
| |
| #define BOOT0_MAGIC "eGON.BT0" |
| #define SPL_SIGNATURE "SPL" /* marks "sunxi" SPL header */ |
| #define SPL_HEADER_VERSION 1 |
| |
| /* Note: A80 will require special handling here: SPL_ADDR 0x10000 */ |
| #define SPL_ADDR 0x0 |
| |
| /* boot head definition from sun4i boot code */ |
| struct boot_file_head { |
| uint32_t b_instruction; /* one intruction jumping to real code */ |
| uint8_t magic[8]; /* ="eGON.BT0" or "eGON.BT1", not C-style str */ |
| uint32_t check_sum; /* generated by PC */ |
| uint32_t length; /* generated by PC */ |
| /* |
| * We use a simplified header, only filling in what is needed |
| * by the boot ROM. To be compatible with Allwinner tools we |
| * would need to implement the proper fields here instead of |
| * padding. |
| * |
| * Actually we want the ability to recognize our "sunxi" variant |
| * of the SPL. To do so, let's place a special signature into the |
| * "pub_head_size" field. We can reasonably expect Allwinner's |
| * boot0 to always have the upper 16 bits of this set to 0 (after |
| * all the value shouldn't be larger than the limit imposed by |
| * SRAM size). |
| * If the signature is present (at 0x14), then we know it's safe |
| * to use the remaining 8 bytes (at 0x18) for our own purposes. |
| * (E.g. sunxi-tools "fel" utility can pass information there.) |
| */ |
| union { |
| uint32_t pub_head_size; |
| uint8_t spl_signature[4]; |
| }; |
| uint32_t fel_script_address; |
| uint32_t reserved; /* padding, align to 32 bytes */ |
| }; |
| |
| #define is_boot0_magic(addr) (memcmp((void *)addr, BOOT0_MAGIC, 8) == 0) |
| |
| #endif |
