upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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69 lines
1.8 KiB
69 lines
1.8 KiB
18 years ago
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/*
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* (C) Copyright 2007 Michal Simek
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*
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* Michal SIMEK <monstr@monstr.eu>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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.text
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.globl dcache_enable
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.ent dcache_enable
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.align 2
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dcache_enable:
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/* Make space on stack for a temporary */
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addi r1, r1, -4
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/* Save register r12 */
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swi r12, r1, 0
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/* Read the MSR register */
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mfs r12, rmsr
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/* Set the instruction enable bit */
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ori r12, r12, 0x80
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/* Save the MSR register */
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mts rmsr, r12
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/* Load register r12 */
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lwi r12, r1, 0
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/* Return */
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rtsd r15, 8
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/* Update stack in the delay slot */
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addi r1, r1, 4
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.end dcache_enable
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.text
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.globl dcache_disable
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.ent dcache_disable
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.align 2
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dcache_disable:
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/* Make space on stack for a temporary */
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addi r1, r1, -4
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/* Save register r12 */
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swi r12, r1, 0
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/* Read the MSR register */
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mfs r12, rmsr
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/* Clear the data cache enable bit */
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andi r12, r12, ~0x80
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/* Save the MSR register */
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mts rmsr, r12
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/* Load register r12 */
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lwi r12, r1, 0
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/* Return */
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rtsd r15, 8
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/* Update stack in the delay slot */
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addi r1, r1, 4
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.end dcache_disable
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