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