| /* | |
| * 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. | |
| */ | |
| movi a1, 1 | |
| movi a0, 0 | |
| wsr a1, windowstart | |
| wsr a0, windowbase | |
| rsync | |
| movi a1, LOCKLEVEL | |
| wsr a1, ps | |
| rsync | |
| _SetupMMU: | |
| Offset = _SetupMMU - _SecondaryResetVector | |
| #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 | |
| .section .SecondaryResetVector.remapped_text, "ax" | |
| .global _RemappedSecondaryResetVector | |
| .org 0 # Need to do org before literals | |
| _RemappedSecondaryResetVector: | |
| .begin no-absolute-literals | |
| .literal_position | |
| _j _RemappedSetupMMU | |
| . = _RemappedSecondaryResetVector + Offset | |
| _RemappedSetupMMU: | |
| #ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX | |
| initialize_mmu | |
| #endif | |
| .end no-absolute-literals |