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-rw-r--r--src/pc80/usbdebug_direct_serial.c44
1 files changed, 36 insertions, 8 deletions
diff --git a/src/pc80/usbdebug_direct_serial.c b/src/pc80/usbdebug_direct_serial.c
index 604294bf1c..8a8b8c6c1e 100644
--- a/src/pc80/usbdebug_direct_serial.c
+++ b/src/pc80/usbdebug_direct_serial.c
@@ -1,24 +1,52 @@
+/*
+ * 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 <part/fallback_boot.h>
-#include "../lib/usbdebug_direct.c"
+#include "../lib/usbdebug_direct.c"
+
static void early_usbdebug_direct_init(void)
{
- struct ehci_debug_info *dbg_info =
- (struct ehci_debug_info *)(CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof (struct ehci_debug_info));
-
- usbdebug_direct_init(EHCI_BAR, EHCI_DEBUG_OFFSET, dbg_info);
+ struct ehci_debug_info *dbg_info = (struct ehci_debug_info *)
+ (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
+
+ usbdebug_direct_init(EHCI_BAR, EHCI_DEBUG_OFFSET, dbg_info);
}
+
void usbdebug_direct_tx_byte(unsigned char data)
{
struct ehci_debug_info *dbg_info;
- dbg_info = (struct ehci_debug_info *)(CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof (struct ehci_debug_info)); // in Cache
- if (dbg_info->ehci_debug) {
+
+ /* "Find" dbg_info structure in Cache */
+ dbg_info = (struct ehci_debug_info *)
+ (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
+
+ if (dbg_info->ehci_debug) {
dbgp_bulk_write_x(dbg_info, &data, 1);
}
}
+
void usbdebug_direct_ram_tx_byte(unsigned char data)
{
struct ehci_debug_info *dbg_info;
- dbg_info = (struct ehci_debug_info *)((CONFIG_LB_MEM_TOPK<<10) - sizeof (struct ehci_debug_info)); //in RAM
+
+ /* "Find" dbg_info structure in RAM */
+ dbg_info = (struct ehci_debug_info *)
+ ((CONFIG_LB_MEM_TOPK << 10) - sizeof(struct ehci_debug_info));
+
if (dbg_info->ehci_debug) {
dbgp_bulk_write_x(dbg_info, &data, 1);
}