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73 lines
1.8 KiB
Diff
73 lines
1.8 KiB
Diff
From 4e16f08c800d57b986217e0d39d4a06b5bdf641d Mon Sep 17 00:00:00 2001
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From: Kurt Mahan <kmahan@freescale.com>
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Date: Wed, 19 Mar 2008 17:37:44 -0600
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Subject: [PATCH] Move BSS section in linker script and zero it on boot.
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To work with the latest round of toolchains the bss section
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in the linker script needed to be moved to the end (due to
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the linker thinking there were overlapping sections).
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The BSS section needs to be manually zeroed.
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LTIBName: mcfv4e-linker-bss-cleanup
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Signed-off-by: Kurt Mahan <kmahan@freescale.com>
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---
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arch/m68k/coldfire/head.S | 11 +++++++++++
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arch/m68k/coldfire/vmlinux-cf.lds | 11 ++++++++---
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2 files changed, 19 insertions(+), 3 deletions(-)
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--- a/arch/m68k/coldfire/head.S
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+++ b/arch/m68k/coldfire/head.S
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@@ -321,6 +321,17 @@ ENTRY(__start)
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movec %d0, %acr3
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nop
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+#ifdef CONFIG_COLDFIRE
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+/* zero bss */
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+ lea _sbss,%a0
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+ lea _ebss,%a1
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+ clrl %d0
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+_loop_bss:
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+ movel %d0,(%a0)+
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+ cmpl %a0,%a1
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+ bne _loop_bss
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+#endif
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+
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/* If you change the memory size to another value make a matching
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change in paging_init(cf-mmu.c) to zones_size[]. */
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--- a/arch/m68k/coldfire/vmlinux-cf.lds
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+++ b/arch/m68k/coldfire/vmlinux-cf.lds
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@@ -51,9 +51,6 @@ SECTIONS
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CONSTRUCTORS
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} :data
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- .bss : AT(ADDR(.bss) - LOAD_OFFSET) { /* BSS */
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- *(.bss)
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- }
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. = ALIGN(16);
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.data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET ) {
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@@ -62,6 +59,8 @@ SECTIONS
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_edata = .; /* End of data section */
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+ NOTES /* support ld --build-id */
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+
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. = ALIGN(8192); /* Initrd */
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.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
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__init_begin = .;
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@@ -111,6 +110,12 @@ SECTIONS
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*(.data.init_task) /* The initial task and kernel stack */
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}
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+ _sbss = .;
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+ .bss : AT(ADDR(.bss) - LOAD_OFFSET) { /* BSS */
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+ *(.bss)
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+ }
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+ _ebss = .;
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+
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_end = . ;
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/* Sections to be discarded */
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