From 9be659ac0868dc367caa957c5c725e46b07f6a5f Mon Sep 17 00:00:00 2001 From: Matthias Fuchs Date: Fri, 9 Nov 2007 15:37:23 +0100 Subject: [PATCH] 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 Signed-off-by: Stefan Roese --- cpu/ppc4xx/usb.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/cpu/ppc4xx/usb.c b/cpu/ppc4xx/usb.c index 272ed8c15e..cb8d5c7d30 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 +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; } -- 2.39.5