diff options
Diffstat (limited to 'arch/arm/mach-nexell/include/mach/boot0.h')
| -rw-r--r-- | arch/arm/mach-nexell/include/mach/boot0.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-nexell/include/mach/boot0.h b/arch/arm/mach-nexell/include/mach/boot0.h new file mode 100644 index 0000000000..e05c07ece6 --- /dev/null +++ b/arch/arm/mach-nexell/include/mach/boot0.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0+ + * + * NSIH (Nexell System Information Header) for FriendlyArm nanopi2 board + * + * The NSIH (first 512 Bytes of u-boot.bin) is necessary for the + * 2nd-Bootloader to get information like load address of U-Boot. + * + * 0x400 must be added to CONFIG_SYS_TEXT_BASE to have the actual load and + * start address because 2nd-Bootloader loads with an offset of 0x400 + * (NSIH + 0x200 bytes are not loaded into RAM). + * + * It has been tested / is working with the following 2nd-Bootloader: + * "BL1 by Nexell V1.0.0-gd551e13 [Built on 2018-01-25 16:58:29]" + * + * (C) Copyright 2020 Stefan Bosch <stefan_b@posteo.net> + */ + +#ifndef __BOOT0_H +#define __BOOT0_H + + ARM_VECTORS + .space 0x30 + .word (_end - _start) + 20 * 1024 /* 0x50: load size + * (bin + 20k for DTB) */ + .space 0x4 + .word CONFIG_SYS_TEXT_BASE + 0x400 /* 0x58: load address */ + .word 0x00000000 + .word CONFIG_SYS_TEXT_BASE + 0x400 /* 0x60: start address */ + .space 0x198 + .byte 'N' /* 0x1FC: "NSIH" signature */ + .byte 'S' + .byte 'I' + .byte 'H' + + /* The NSIH + 0x200 bytes are omitted by the 2nd-Bootloader */ + .space 0x200 +_start: + ARM_VECTORS + +#endif /* __BOOT0_H */ |