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https://github.com/AsahiLinux/u-boot
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9be659ac08
This patch disables the 44x d-cache on 'usb start' and reenables it on 'usb stop'. This should be seen as a temporary fix until the generic usb-ohci driver can life with d-cache enabled. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com> Signed-off-by: Stefan Roese <sr@denx.de>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/*
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* (C) Copyright 2007
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* Markus Klotzbuecher, DENX Software Engineering <mk@denx.de>
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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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#include <common.h>
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#if defined(CONFIG_USB_OHCI_NEW) && defined(CFG_USB_OHCI_CPU_INIT)
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#ifdef CONFIG_4xx_DCACHE
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#include <asm/mmu.h>
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DECLARE_GLOBAL_DATA_PTR;
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#endif
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#include "usbdev.h"
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int usb_cpu_init(void)
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{
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#ifdef CONFIG_4xx_DCACHE
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/* disable cache */
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change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, TLB_WORD2_I_ENABLE);
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#endif
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#if defined(CONFIG_440EP) || defined(CONFIG_440EPX)
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usb_dev_init();
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#endif
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return 0;
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}
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int usb_cpu_stop(void)
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{
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#ifdef CONFIG_4xx_DCACHE
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/* enable cache */
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change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, 0);
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#endif
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return 0;
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}
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int usb_cpu_init_fail(void)
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{
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#ifdef CONFIG_4xx_DCACHE
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/* enable cache */
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change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, 0);
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#endif
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return 0;
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}
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#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */
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