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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-20 09:31:09 +00:00
e87c09a899
Output a table of the kernel memory regions at boot time.
This is taken directly from the ARM architecture code that does this.
The table looks like this:
Virtual kernel memory layout:
vector : 0x00000000 - 0x00000400 ( 0 KiB)
kmap : 0xd0000000 - 0xe0000000 ( 256 MiB)
vmalloc : 0xc0000000 - 0xcfffffff ( 255 MiB)
lowmem : 0x00000000 - 0x02000000 ( 32 MiB)
.init : 0x00128000 - 0x00134000 ( 48 KiB)
.text : 0x00020000 - 0x00118d54 ( 996 KiB)
.data : 0x00118d60 - 0x00126000 ( 53 KiB)
.bss : 0x00134000 - 0x001413e0 ( 53 KiB)
This has been very useful while debugging the ColdFire virtual memory
support code. But in general I think it is nice to know extacly where
the kernel has layed everything out on boot.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
57 lines
1.1 KiB
Text
57 lines
1.1 KiB
Text
/* ld script to make m68k Linux kernel */
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/page.h>
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#include <asm/thread_info.h>
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OUTPUT_FORMAT("elf32-m68k", "elf32-m68k", "elf32-m68k")
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OUTPUT_ARCH(m68k)
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ENTRY(_start)
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jiffies = jiffies_64 + 4;
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SECTIONS
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{
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. = 0xE002000;
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_text = .; /* Text and read-only data */
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.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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*(.fixup)
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*(.gnu.warning)
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} :text = 0x4e75
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RODATA
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_etext = .; /* End of text section */
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EXCEPTION_TABLE(16) :data
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_sdata = .; /* Start of rw data section */
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RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE) :data
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/* End of data goes *here* so that freeing init code works properly. */
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_edata = .;
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NOTES
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/* will be freed after init */
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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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.m68k_fixup : {
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__start_fixup = .;
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*(.m68k_fixup)
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__stop_fixup = .;
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}
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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_sbss = .;
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BSS_SECTION(0, 0, 0)
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_ebss = .;
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_end = . ;
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STABS_DEBUG
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/* Sections to be discarded */
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DISCARDS
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}
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