diff options
Diffstat (limited to 'src/console/usbdebug_direct_console.c')
| -rw-r--r-- | src/console/usbdebug_direct_console.c | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/src/console/usbdebug_direct_console.c b/src/console/usbdebug_direct_console.c index 86b89bd920..388715cff8 100644 --- a/src/console/usbdebug_direct_console.c +++ b/src/console/usbdebug_direct_console.c @@ -1,19 +1,40 @@ +/* + * 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> -struct ehci_debug_info dbg_info; +static struct ehci_debug_info dbg_info; void set_ehci_base(unsigned ehci_base) { unsigned diff; - if(!dbg_info.ehci_debug) return; + + 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; @@ -21,39 +42,46 @@ void set_ehci_debug(unsigned ehci_debug) unsigned get_ehci_debug(void) { - return dbg_info.ehci_debug; + return dbg_info.ehci_debug; } static void dbgp_init(void) { struct ehci_debug_info *dbg_infox; - dbg_infox = (struct ehci_debug_info *)((CONFIG_LB_MEM_TOPK<<10) - sizeof (struct ehci_debug_info)); //in RAM - memcpy(&dbg_info, dbg_infox, sizeof(struct ehci_debug_info) ); + + /* 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_LB_MEM_TOPK << 10) - sizeof(struct ehci_debug_info)); + + memcpy(&dbg_info, dbg_infox, sizeof(struct ehci_debug_info)); } -static void dbgp_tx_byte(unsigned char data) +static void dbgp_tx_byte(unsigned char data) { - if(dbg_info.ehci_debug) - dbgp_bulk_write_x(&dbg_info,&data,1); + if (dbg_info.ehci_debug) + dbgp_bulk_write_x(&dbg_info, &data, 1); } -static unsigned char dbgp_rx_byte(void) +static unsigned char dbgp_rx_byte(void) { unsigned char data = 0xff; - if(dbg_info.ehci_debug) - dbgp_bulk_read_x(&dbg_info,&data,1); + + if (dbg_info.ehci_debug) + dbgp_bulk_read_x(&dbg_info, &data, 1); + return data; } -static int dbgp_tst_byte(void) +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, + .init = dbgp_init, + .tx_byte = dbgp_tx_byte, + .rx_byte = dbgp_rx_byte, .tst_byte = dbgp_tst_byte, }; - |