CHANGELOG.md

@@ -5,6 +5,10 @@ Fourth digit in release number means PC Engines patch.
 
 ## [Unreleased]
 
+## [rel-1.11.0.2] - 2017-12-22
+### Fixed
+- bug with serial console printing
+
 ## [rel-1.11.0.1] - 2017-11-30
 ### Changed
 - rebased to 1.11.0 stable mainline
@@ -46,7 +50,8 @@ Fourth digit in release number means PC Engines patch.
 ### Fixed
 - prevented from printing character multiple times
 
-[Unreleased]: https://github.com/pcengines/seabios/compare/rel-1.11.0.1...apu_support
+[Unreleased]: https://github.com/pcengines/seabios/compare/rel-1.11.0.2...apu_support
+[rel-1.11.0.2]: https://github.com/pcengines/seabios/compare/rel-1.11.0.2...rel-1.11.0.1
 [rel-1.11.0.1]: https://github.com/pcengines/seabios/compare/rel-1.11.0.1...rel-1.10.2.1
 [rel-1.10.2.1]: https://github.com/pcengines/seabios/compare/rel-1.10.2.1...rel-1.10.0.1
 [rel-1.10.0.1]: https://github.com/pcengines/seabios/compare/rel-1.9.2.4...rel-1.10.0.1

src/sercon.c

@@ -99,6 +99,13 @@ static void sercon_putchar(u8 chr)
     }
 }
 
+/* Reset terminal to initial state */
+static void sercon_term_reset(void)
+{
+    sercon_putchar('\x1b');
+    sercon_putchar('c');
+}
+
 static void sercon_term_clear_screen(void)
 {
     sercon_putchar('\x1b');
@@ -302,7 +309,7 @@ static void sercon_lazy_putchar(u8 chr, u8 attr, u8 teletype)
 /* Set video mode */
 static void sercon_1000(struct bregs *regs)
 {
-
+    u8 clearscreen = !(regs->al & 0x80);
     u8 mode = regs->al & 0x7f;
     u8 rows, cols;
 
@@ -326,7 +333,7 @@ static void sercon_1000(struct bregs *regs)
             regs->al = 0x30;
             break;
         }
-
+        cursor_pos_set(0, 0);
         SET_BDA(video_mode, mode);
         SET_BDA(video_cols, cols);
         SET_BDA(video_rows, rows-1);
@@ -336,8 +343,16 @@ static void sercon_1000(struct bregs *regs)
     }
 
     SET_LOW(sercon_enable, mode <= 0x07);
+    SET_LOW(sercon_col_last, 0);
+    SET_LOW(sercon_row_last, 0);
+    SET_LOW(sercon_attr_last, 0);
 
+    sercon_term_reset();
     sercon_term_no_linewrap();
+
+    if (clearscreen) {
+         sercon_term_clear_screen();
+    }
 }
 
 /* Set text-mode cursor shape */