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arm64: head: Annotate stext and preserve_boot_args as code

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In an effort to clarify and simplify the annotation of assembly
functions new macros have been introduced. These replace ENTRY and
ENDPROC with two different annotations for normal functions and those
with unusual calling conventions.  Neither stext nor preserve_boot_args
is called with the usual AAPCS calling conventions and they should
therefore be annotated as code.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2020-02-18 19:58:34 +00:00 committed by Catalin Marinas
parent c63d9f82db
commit ebdf44a189
1 changed files with 4 additions and 4 deletions
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8
arch/arm64/kernel/head.S
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@ -105,7 +105,7 @@ pe_header:
* x24 __primary_switch() .. relocate_kernel()
* current RELR displacement
*/
ENTRY(stext)
SYM_CODE_START(stext)
bl preserve_boot_args
bl el2_setup // Drop to EL1, w0=cpu_boot_mode
adrp x23, __PHYS_OFFSET
@ -120,12 +120,12 @@ ENTRY(stext)
*/
bl __cpu_setup // initialise processor
b __primary_switch
ENDPROC(stext)
SYM_CODE_END(stext)
/*
* Preserve the arguments passed by the bootloader in x0 .. x3
*/
preserve_boot_args:
SYM_CODE_START_LOCAL(preserve_boot_args)
mov x21, x0 // x21=FDT
adr_l x0, boot_args // record the contents of
@ -137,7 +137,7 @@ preserve_boot_args:
mov x1, #0x20 // 4 x 8 bytes
b __inval_dcache_area // tail call
ENDPROC(preserve_boot_args)
SYM_CODE_END(preserve_boot_args)
/*
* Macro to create a table entry to the next page.