u-boot/arch/arm/include/asm/arch-sunxi/spl.h
Siarhei Siamashka d96ebc468d sunxi: Add support for Allwinner A64 SoCs
The Allwinner A64 SoC is used in the Pine64. This patch adds
all bits necessary to compile U-Boot for it running in AArch64
mode.

Unfortunately SPL is not ready yet due to legal problems, so
we need to boot using the binary boot0 for now.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
[agraf: remove SPL code, move to AArch64]
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-04-01 09:52:28 +02:00

53 lines
1.7 KiB
C

/*
* (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
#if defined(CONFIG_MACH_SUN9I) || defined(CONFIG_MACH_SUN50I)
#define SPL_ADDR 0x10000
#else
#define SPL_ADDR 0x0
#endif
/* 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