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xtensa: Assure end of U-Boot is at 8-byte aligned offset

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Make sure the end of U-Boot is at 8-byte aligned offset, not 4-byte
aligned offset. This allows safely appending DT at the end of U-Boot
with the guarantee that the DT will be at 8-byte aligned offset. This
8-byte alignment is now checked by newer libfdt 1.7.2 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Marek Vasut
2025-11-16 01:14:32 +01:00
committed by Tom Rini
parent f743530990
commit 8c0d78ddc4
2 changed files with 6 additions and 1 deletions
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2
arch/xtensa/cpu/u-boot.lds
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@@ -78,7 +78,7 @@ SECTIONS
SECTION_text(XTENSA_SYS_TEXT_ADDR, FOLLOWING(.DoubleExceptionVector.text))
SECTION_rodata(ALIGN(16), FOLLOWING(.text))
SECTION_u_boot_list(ALIGN(16), FOLLOWING(.rodata))
SECTION_data(ALIGN(16), FOLLOWING(__u_boot_list))
SECTION_data(ALIGN(16), FOLLOWINGDT(__u_boot_list))
__reloc_end = .;
__init_end = .;

5
arch/xtensa/include/asm/ldscript.h
View File

@@ -21,6 +21,9 @@
#define FORCE_OUTPUT . = .
#define FOLLOWING(sec) \
AT(((LOADADDR(sec) + SIZEOF(sec) + ALIGN_LMA-1)) & ~(ALIGN_LMA-1))
#define ALIGN_LMA_DT 8
#define FOLLOWINGDT(sec) \
AT(((LOADADDR(sec) + SIZEOF(sec) + ALIGN_LMA_DT-1)) & ~(ALIGN_LMA_DT-1))
/*
* Specify an output section that will be added to the ROM store table
@@ -110,6 +113,7 @@
___u_boot_list_start = ABSOLUTE(.); \
KEEP(*(SORT(__u_boot_list*))); \
___u_boot_list_end = ABSOLUTE(.); \
. = ALIGN(ALIGN_LMA_DT); \
}
#define SECTION_data(_vma_, _lma_) \
@@ -130,6 +134,7 @@
*(.eh_frame) \
*(.dynamic) \
*(.gnu.version_d) \
. = ALIGN(ALIGN_LMA_DT); \
_data_end = ABSOLUTE(.); \
}