| /* |
| * This file is part of the coreboot project. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA |
| */ |
| |
| #include <string.h> |
| #include <console/console.h> |
| #include <usbdebug_direct.h> |
| #include <pc80/mc146818rtc.h> |
| |
| static struct ehci_debug_info dbg_info; |
| |
| void set_ehci_base(unsigned ehci_base) |
| { |
| unsigned diff; |
| |
| if (!dbg_info.ehci_debug) |
| return; |
| |
| diff = dbg_info.ehci_caps - ehci_base; |
| dbg_info.ehci_regs -= diff; |
| dbg_info.ehci_debug -= diff; |
| dbg_info.ehci_caps = ehci_base; |
| } |
| |
| void set_ehci_debug(unsigned ehci_debug) |
| { |
| dbg_info.ehci_debug = ehci_debug; |
| } |
| |
| unsigned get_ehci_debug(void) |
| { |
| return dbg_info.ehci_debug; |
| } |
| |
| static void dbgp_init(void) |
| { |
| struct ehci_debug_info *dbg_infox; |
| |
| /* At this point, all we have to do is copy the fixed address |
| * debug_info data structure to our version defined above. */ |
| |
| dbg_infox = (struct ehci_debug_info *) |
| ((CONFIG_RAMTOP) - sizeof(struct ehci_debug_info)); |
| |
| memcpy(&dbg_info, dbg_infox, sizeof(struct ehci_debug_info)); |
| } |
| |
| static void dbgp_tx_byte(unsigned char data) |
| { |
| if (dbg_info.ehci_debug) |
| dbgp_bulk_write_x(&dbg_info, &data, 1); |
| } |
| |
| static unsigned char dbgp_rx_byte(void) |
| { |
| unsigned char data = 0xff; |
| |
| if (dbg_info.ehci_debug) |
| dbgp_bulk_read_x(&dbg_info, &data, 1); |
| |
| return data; |
| } |
| |
| static int dbgp_tst_byte(void) |
| { |
| return dbg_info.ehci_debug; |
| } |
| |
| static const struct console_driver usbdebug_direct_console __console = { |
| .init = dbgp_init, |
| .tx_byte = dbgp_tx_byte, |
| .rx_byte = dbgp_rx_byte, |
| .tst_byte = dbgp_tst_byte, |
| }; |