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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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427011db47
J2-based devices expect to find a device tree blob at the end of the
.bss section. As of a77725a9a3 ("scripts/dtc: Update to upstream
version v1.6.1-19-g0a3a9d3449c8"), libfdt enforces 8-byte alignment
for the DTB, causing J2 devices to fail early in sh_fdt_init().
As the J2 loader firmware calculates the DTB location based on the kernel
image .bss section size rather than the __bss_stop symbol offset, the
required alignment can't be enforced with BSS_SECTION(0, PAGE_SIZE, 8).
To fix this, inline a modified version of the above macro which grows
.bss by the required size. While this change affects all existing SH
boards, it should be benign on platforms which don't need this alignment.
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Rob Landley <rob@landley.net>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
95 lines
1.7 KiB
ArmAsm
95 lines
1.7 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ld script to make SuperH Linux kernel
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* Written by Niibe Yutaka and Paul Mundt
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*/
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OUTPUT_ARCH(sh)
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#define RUNTIME_DISCARD_EXIT
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#include <asm/thread_info.h>
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#include <asm/cache.h>
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#include <asm/vmlinux.lds.h>
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#ifdef CONFIG_PMB
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#define MEMORY_OFFSET 0
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#else
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#define MEMORY_OFFSET __MEMORY_START
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#endif
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ENTRY(_start)
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SECTIONS
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{
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. = PAGE_OFFSET + MEMORY_OFFSET + PHYSICAL_OFFSET + CONFIG_ZERO_PAGE_OFFSET;
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_text = .; /* Text and read-only data */
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.empty_zero_page : AT(ADDR(.empty_zero_page)) {
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*(.empty_zero_page)
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} = 0
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.text : AT(ADDR(.text)) {
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HEAD_TEXT
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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IRQENTRY_TEXT
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SOFTIRQENTRY_TEXT
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*(.fixup)
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*(.gnu.warning)
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_etext = .; /* End of text section */
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} = 0x0009
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EXCEPTION_TABLE(16)
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_sdata = .;
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RO_DATA(PAGE_SIZE)
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RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
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_edata = .;
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DWARF_EH_FRAME
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. = ALIGN(PAGE_SIZE); /* Init code and data */
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__init_begin = .;
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INIT_TEXT_SECTION(PAGE_SIZE)
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INIT_DATA_SECTION(16)
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. = ALIGN(4);
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.machvec.init : AT(ADDR(.machvec.init)) {
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__machvec_start = .;
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*(.machvec.init)
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__machvec_end = .;
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}
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PERCPU_SECTION(L1_CACHE_BYTES)
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/*
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* .exit.text is discarded at runtime, not link time, to deal with
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* references from __bug_table
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*/
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.exit.text : AT(ADDR(.exit.text)) { EXIT_TEXT }
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.exit.data : AT(ADDR(.exit.data)) { EXIT_DATA }
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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__bss_start = .;
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SBSS(0)
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. = ALIGN(PAGE_SIZE);
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.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
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BSS_FIRST_SECTIONS
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. = ALIGN(PAGE_SIZE);
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*(.bss..page_aligned)
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. = ALIGN(PAGE_SIZE);
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*(.dynbss)
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*(BSS_MAIN)
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*(COMMON)
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. = ALIGN(8);
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}
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__bss_stop = .;
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_end = . ;
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STABS_DEBUG
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DWARF_DEBUG
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ELF_DETAILS
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DISCARDS
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}
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