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authorMatthias Fuchs <matthias.fuchs@esd-electronics.com>2007-11-09 15:37:23 +0100
committerStefan Roese <sr@denx.de>2007-11-09 16:42:15 +0100
commit9be659ac0868dc367caa957c5c725e46b07f6a5f (patch)
treed30ead25b31ea6199d973debdadfb03b01c71be2
parentfbde2169d2c48fcc9ff03489534a78ffb0a8a0d4 (diff)
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ppc4xx: Make USB working with CONFIG_4xx_DCACHE defined
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>
-rw-r--r--cpu/ppc4xx/usb.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/cpu/ppc4xx/usb.c b/cpu/ppc4xx/usb.c
index 272ed8c..cb8d5c7 100644
--- a/cpu/ppc4xx/usb.c
+++ b/cpu/ppc4xx/usb.c
@@ -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;
}