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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465/* * Xtensa Secondary Processors startup code. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2001 - 2013 Tensilica Inc. * * Joe Taylor <joe@tensilica.com> * Chris Zankel <chris@zankel.net> * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca> * Pete Delaney <piet@tensilica.com> */
#include <linux/linkage.h>
#include <asm/cacheasm.h>#include <asm/initialize_mmu.h>#include <asm/mxregs.h>#include <asm/regs.h>
.section .SecondaryResetVector.text, "ax"
ENTRY(_SecondaryResetVector) _j _SetupOCD
.begin no-absolute-literals .literal_position
_SetupOCD: /* * Initialize WB, WS, and clear PS.EXCM (to allow loop instructions). * Set Interrupt Level just below XCHAL_DEBUGLEVEL to allow * xt-gdb to single step via DEBUG exceptions received directly * by ocd. */#if XCHAL_HAVE_WINDOWED movi a1, 1 movi a0, 0 wsr a1, windowstart wsr a0, windowbase rsync#endif
movi a1, LOCKLEVEL wsr a1, ps rsync
_SetupMMU:#ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX initialize_mmu#endif
/* * Start Secondary Processors with NULL pointer to boot params. */ movi a2, 0 # a2 == NULL movi a3, _startup jx a3
.end no-absolute-literals