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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-05-08 15:15:45 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-05-08 15:15:45 +0100 |
| commit | 08fdffd4cf4ddd4eb4b32e78f93f4ff53ccec78f (patch) | |
| tree | edbce85f683fcc327f3552b208c954a9d12e704a | |
| parent | 4efb4482729d2cc7926f49f997a28370e701073f (diff) | |
| download | linux-08fdffd4cf4ddd4eb4b32e78f93f4ff53ccec78f.tar.bz2 | |
[ARM] Ensure head text is always placed at the start of kernel
Commit 86c0baf123e474b6eb404798926ecf62b426bf3a highlighted that we
may end up with the head text placed elsewhere in the kernel image.
Introduce a new .text.head section to contain the initial kernel
startup code, and always place this section at the beginning of the
kernel image.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/kernel/head-nommu.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/head.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.S | 10 |
3 files changed, 9 insertions, 5 deletions
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index 0119c0d5f978..5d78ffb8a9a7 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -33,7 +33,7 @@ * numbers for r1. * */ - __INIT + .section ".text.head", "ax" .type stext, %function ENTRY(stext) msr cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 1d35edacc011..41f98b4ba2ee 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -73,7 +73,7 @@ * crap here - that's what the boot loader (or in extreme, well justified * circumstances, zImage) is for. */ - __INIT + .section ".text.head", "ax" .type stext, %function ENTRY(stext) msr cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index faf32de5c5ad..e4156e7868ce 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -23,11 +23,15 @@ SECTIONS #else . = PAGE_OFFSET + TEXT_OFFSET; #endif - .init : { /* Init code and data */ + .text.head : { _stext = .; - _sinittext = .; + _sinittext = .; + *(.text.head) + } + + .init : { /* Init code and data */ *(.init.text) - _einittext = .; + _einittext = .; __proc_info_begin = .; *(.proc.info.init) __proc_info_end = .; |