mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
6d295099cc
So far we used the separate mksunxiboot tool for generating a bootable image for Allwinner SPLs, probably just for historical reasons. Use the mkimage framework to generate a so called eGON image the Allwinner BROM expects. The new image type is called "sunxi_egon", to differentiate it from the (still to be implemented) secure boot TOC0 image. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net> Reviewed-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Simon Glass <sjg@chromium.org>
83 lines
3.2 KiB
C
83 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2007-2011
|
|
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
|
|
* Tom Cubie <tangliang@allwinnertech.com>
|
|
*
|
|
* Constants and data structures used in Allwinner "eGON" images, as
|
|
* parsed by the Boot-ROM.
|
|
*
|
|
* Shared between mkimage and the SPL.
|
|
*/
|
|
#ifndef SUNXI_IMAGE_H
|
|
#define SUNXI_IMAGE_H
|
|
|
|
#define BOOT0_MAGIC "eGON.BT0"
|
|
#define BROM_STAMP_VALUE 0x5f0a6c39
|
|
#define SPL_SIGNATURE "SPL" /* marks "sunxi" SPL header */
|
|
#define SPL_MAJOR_BITS 3
|
|
#define SPL_MINOR_BITS 5
|
|
#define SPL_VERSION(maj, min) \
|
|
((((maj) & ((1U << SPL_MAJOR_BITS) - 1)) << SPL_MINOR_BITS) | \
|
|
((min) & ((1U << SPL_MINOR_BITS) - 1)))
|
|
|
|
#define SPL_HEADER_VERSION SPL_VERSION(0, 2)
|
|
|
|
#define SPL_ENV_HEADER_VERSION SPL_VERSION(0, 1)
|
|
#define SPL_DT_HEADER_VERSION SPL_VERSION(0, 2)
|
|
#define SPL_DRAM_HEADER_VERSION SPL_VERSION(0, 3)
|
|
|
|
/* 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; /* since v0.1, set by sunxi-fel */
|
|
/*
|
|
* If the fel_uEnv_length member below is set to a non-zero value,
|
|
* it specifies the size (byte count) of data at fel_script_address.
|
|
* At the same time this indicates that the data is in uEnv.txt
|
|
* compatible format, ready to be imported via "env import -t".
|
|
*/
|
|
uint32_t fel_uEnv_length; /* since v0.1, set by sunxi-fel */
|
|
/*
|
|
* Offset of an ASCIIZ string (relative to the SPL header), which
|
|
* contains the default device tree name (CONFIG_DEFAULT_DEVICE_TREE).
|
|
* This is optional and may be set to NULL. Is intended to be used
|
|
* by flash programming tools for providing nice informative messages
|
|
* to the users.
|
|
*/
|
|
uint32_t dt_name_offset; /* since v0.2, set by mksunxiboot */
|
|
uint32_t dram_size; /* in MiB, since v0.3, set by SPL */
|
|
uint32_t boot_media; /* written here by the boot ROM */
|
|
/* A padding area (may be used for storing text strings) */
|
|
uint32_t string_pool[13]; /* since v0.2, filled by mksunxiboot */
|
|
/* The header must be a multiple of 32 bytes (for VBAR alignment) */
|
|
};
|
|
|
|
/* Compile time check to assure proper alignment of structure */
|
|
typedef char boot_file_head_not_multiple_of_32[1 - 2*(sizeof(struct boot_file_head) % 32)];
|
|
|
|
#endif
|