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ppc4xx: Make USB working with CONFIG_4xx_DCACHE defined

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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>
This commit is contained in:
Matthias Fuchs 2007-11-09 15:37:23 +01:00 committed by Stefan Roese
parent fbde2169d2
commit 9be659ac08
1 changed files with 17 additions and 1 deletions
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18
cpu/ppc4xx/usb.c
View File

@ -25,25 +25,41 @@
#if defined(CONFIG_USB_OHCI_NEW) && defined(CFG_USB_OHCI_CPU_INIT)
#ifdef CONFIG_4xx_DCACHE
#include <asm/mmu.h>
DECLARE_GLOBAL_DATA_PTR;
#endif
#include "usbdev.h"
int usb_cpu_init(void)
{
#ifdef CONFIG_4xx_DCACHE
/* disable cache */
change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, TLB_WORD2_I_ENABLE);
#endif
#if defined(CONFIG_440EP) || defined(CONFIG_440EPX)
usb_dev_init();
#endif
return 0;
}
int usb_cpu_stop(void)
{
#ifdef CONFIG_4xx_DCACHE
/* enable cache */
change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, 0);
#endif
return 0;
}
int usb_cpu_init_fail(void)
{
#ifdef CONFIG_4xx_DCACHE
/* enable cache */
change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, 0);
#endif
return 0;
}