arch/powerpc/cpu/ppc4xx/usb.c

   1 /*
   2  * (C) Copyright 2007
   3  * Markus Klotzbuecher, DENX Software Engineering <mk@denx.de>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9
  10 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
  11
  12 #ifdef CONFIG_4xx_DCACHE
  13 #include <asm/mmu.h>
  14 DECLARE_GLOBAL_DATA_PTR;
  15 #endif
  16
  17 int usb_cpu_init(void)
  18 {
  19 #ifdef CONFIG_4xx_DCACHE
  20         /* disable cache */
  21         change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, TLB_WORD2_I_ENABLE);
  22 #endif
  23
  24         return 0;
  25 }
  26
  27 int usb_cpu_stop(void)
  28 {
  29 #ifdef CONFIG_4xx_DCACHE
  30         /* enable cache */
  31         change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, 0);
  32 #endif
  33         return 0;
  34 }
  35
  36 int usb_cpu_init_fail(void)
  37 {
  38 #ifdef CONFIG_4xx_DCACHE
  39         /* enable cache */
  40         change_tlb(gd->bd->bi_memstart, gd->bd->bi_memsize, 0);
  41 #endif
  42         return 0;
  43 }
  44
  45 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */