mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-13 14:46:21 +09:00
fe1378a961
To be more EABI compliant and as a preparation for building with clang, use the platform-specific r9 register for gd instead of r8. note: The FIQ is not updated since it is not used in u-boot, and under discussion for the time being. The following checkpatch warning is ignored: WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl> cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
42 lines
747 B
ArmAsm
42 lines
747 B
ArmAsm
/*
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* A lowlevel_init function that sets up the stack to call a C function to
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* perform further init.
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*
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* (C) Copyright 2010
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Aneesh V <aneesh@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm-offsets.h>
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#include <config.h>
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#include <linux/linkage.h>
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ENTRY(lowlevel_init)
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/*
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* Setup a temporary stack
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*/
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ldr sp, =CONFIG_SYS_INIT_SP_ADDR
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bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
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#ifdef CONFIG_SPL_BUILD
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ldr r9, =gdata
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#else
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sub sp, #GD_SIZE
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bic sp, sp, #7
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mov r9, sp
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#endif
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/*
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* Save the old lr(passed in ip) and the current lr to stack
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*/
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push {ip, lr}
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/*
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* go setup pll, mux, memory
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*/
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bl s_init
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pop {ip, pc}
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ENDPROC(lowlevel_init)
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