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| author | Matthias Fuchs <matthias.fuchs@esd-electronics.com> | 2007-11-09 15:37:23 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2007-11-09 16:42:15 +0100 |
| commit | 9be659ac0868dc367caa957c5c725e46b07f6a5f (patch) | |
| tree | d30ead25b31ea6199d973debdadfb03b01c71be2 /cpu | |
| parent | fbde2169d2c48fcc9ff03489534a78ffb0a8a0d4 (diff) | |
| download | u-boot-imx-9be659ac0868dc367caa957c5c725e46b07f6a5f.zip u-boot-imx-9be659ac0868dc367caa957c5c725e46b07f6a5f.tar.gz u-boot-imx-9be659ac0868dc367caa957c5c725e46b07f6a5f.tar.bz2 | |
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>
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ppc4xx/usb.c | 18 |
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; } |