mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 14:16:17 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright 2017 Theobroma Systems Design und Consulting GmbH
|
|
*/
|
|
|
|
/*
|
|
* Execution starts on the instruction following this 4-byte header
|
|
* (containing the magic 'RK30', 'RK31', 'RK32' or 'RK33'). This
|
|
* magic constant will be written into the final image by the rkimage
|
|
* tool, but we need to reserve space for it here.
|
|
*
|
|
* To make life easier for everyone, we build the SPL binary with
|
|
* space for this 4-byte header already included in the binary.
|
|
*/
|
|
#ifdef CONFIG_SPL_BUILD
|
|
/*
|
|
* We need to add 4 bytes of space for the 'RK33' at the
|
|
* beginning of the executable. However, as we want to keep
|
|
* this generic and make it applicable to builds that are like
|
|
* the RK3368 (TPL needs this, SPL doesn't) or the RK3399 (no
|
|
* TPL, but extra space needed in the SPL), we simply insert
|
|
* a branch-to-next-instruction-word with the expectation that
|
|
* the first one may be overwritten, if this is the first stage
|
|
* contained in the final image created with mkimage)...
|
|
*/
|
|
b 1f /* if overwritten, entry-address is at the next word */
|
|
1:
|
|
#endif
|
|
#if CONFIG_IS_ENABLED(ROCKCHIP_EARLYRETURN_TO_BROM)
|
|
adr r3, entry_counter
|
|
ldr r0, [r3]
|
|
cmp r0, #1 /* check if entry_counter == 1 */
|
|
beq reset /* regular bootup */
|
|
add r0, #1
|
|
str r0, [r3] /* increment the entry_counter in memory */
|
|
mov r0, #0 /* return 0 to the BROM to signal 'OK' */
|
|
bx lr /* return control to the BROM */
|
|
entry_counter:
|
|
.word 0
|
|
#endif
|
|
|
|
#if (defined(CONFIG_SPL_BUILD) || defined(CONFIG_ARM64))
|
|
/* U-Boot proper of armv7 do not need this */
|
|
b reset
|
|
#endif
|
|
|
|
#if !defined(CONFIG_ARM64)
|
|
/*
|
|
* For armv7, the addr '_start' will used as vector start address
|
|
* and write to VBAR register, which needs to aligned to 0x20.
|
|
*/
|
|
.align(5), 0x0
|
|
_start:
|
|
ARM_VECTORS
|
|
#endif
|
|
|
|
#if defined(CONFIG_SPL_BUILD) && (CONFIG_ROCKCHIP_SPL_RESERVE_IRAM > 0)
|
|
.space CONFIG_ROCKCHIP_SPL_RESERVE_IRAM /* space for the ATF data */
|
|
#endif
|