LXR coreboot-v2/src/pc80/usbdebug_direct

   1/*
   2 * This file is part of the coreboot project.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; version 2 of the License.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 *
  13 * You should have received a copy of the GNU General Public License
  14 * along with this program; if not, write to the Free Software
  15 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
  16 */
  17
  18#include <part/fallback_boot.h>
  19#include "../lib/usbdebug_direct.c"
  20
  21static void early_usbdebug_direct_init(void)
  22{
  23        struct ehci_debug_info *dbg_info = (struct ehci_debug_info *)
  24            (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
  25
  26        usbdebug_direct_init(EHCI_BAR, EHCI_DEBUG_OFFSET, dbg_info);
  27}
  28
  29void usbdebug_direct_tx_byte(unsigned char data)
  30{
  31        struct ehci_debug_info *dbg_info;
  32
  33        /* "Find" dbg_info structure in Cache */
  34        dbg_info = (struct ehci_debug_info *)
  35            (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
  36
  37        if (dbg_info->ehci_debug) {
  38                dbgp_bulk_write_x(dbg_info, &data, 1);
  39        }
  40}
  41
  42void usbdebug_direct_ram_tx_byte(unsigned char data)
  43{
  44        struct ehci_debug_info *dbg_info;
  45
  46        /* "Find" dbg_info structure in RAM */
  47        dbg_info = (struct ehci_debug_info *)
  48            ((CONFIG_RAMTOP) - sizeof(struct ehci_debug_info));
  49
  50        if (dbg_info->ehci_debug) {
  51                dbgp_bulk_write_x(dbg_info, &data, 1);
  52        }
  53}
  54