console: Split ROMCC helpers

These are potentially useful with GDB or SerialICE too.
Also it reduces the amount of actual code we put in romcc_console.

Change-Id: Id8c56e979660ad9f4eef39c648f68c7ec60edfba
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5339
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/src/console/early_print.c b/src/console/early_print.c
new file mode 100644
index 0000000000..da6532f0fb
--- /dev/null
+++ b/src/console/early_print.c
@@ -0,0 +1,64 @@
+/*
+ * 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 <console/streams.h>
+
+void console_tx_nibble(unsigned nibble)
+{
+	unsigned char digit;
+	digit = nibble + '0';
+	if (digit > '9') {
+		digit += 39;
+	}
+	console_tx_byte(digit);
+}
+
+void console_tx_hex8(unsigned char value)
+{
+	console_tx_nibble((value >>  4U) & 0x0fU);
+	console_tx_nibble(value & 0x0fU);
+}
+
+void console_tx_hex16(unsigned short value)
+{
+	console_tx_nibble((value >> 12U) & 0x0fU);
+	console_tx_nibble((value >>  8U) & 0x0fU);
+	console_tx_nibble((value >>  4U) & 0x0fU);
+	console_tx_nibble(value & 0x0fU);
+}
+
+void console_tx_hex32(unsigned int value)
+{
+	console_tx_nibble((value >> 28U) & 0x0fU);
+	console_tx_nibble((value >> 24U) & 0x0fU);
+	console_tx_nibble((value >> 20U) & 0x0fU);
+	console_tx_nibble((value >> 16U) & 0x0fU);
+	console_tx_nibble((value >> 12U) & 0x0fU);
+	console_tx_nibble((value >>  8U) & 0x0fU);
+	console_tx_nibble((value >>  4U) & 0x0fU);
+	console_tx_nibble(value & 0x0fU);
+}
+
+void console_tx_string(const char *str)
+{
+	unsigned char ch;
+	while((ch = *str++) != '\0') {
+		if (ch == '\n')
+			console_tx_byte('\r');
+		console_tx_byte(ch);
+	}
+}