支持构建时修改字体缩放

include/kernel/tty.h

@@ -152,7 +152,9 @@ bool tty_is_enabled(tty *ttyx);
 bool tty_enable(tty *ttyx);
 void tty_disable(tty *ttyx);
 
-#define TTY_FONT_SCALE 2
+#ifndef TTY_FONT_SCALE
+#define TTY_FONT_SCALE 1
+#endif
 
 typedef struct __tty_font_t
 {

src/Makefile

@@ -27,6 +27,9 @@ DEFINES = ARCH="${ARCH}" ASM="${ASM}" ASMFLAGS="${ASMFLAGS}" SOURCE="${SOURCE}"
 ifdef release
 	DEFINES := ${DEFINES} release=1
 endif
+ifdef ttyfont_scale
+	DEFINES := ${DEFINES} ttyfont_scale=${ttyfont_scale}
+endif
 
 ################################
 # rust语言环境变量

src/kernel/Makefile

@@ -12,6 +12,9 @@ CCFLAGS = -m64 -mcmodel=large -I ../../include \
 ifdef release
 	CCFLAGS := ${CCFLAGS} -O2
 endif
+ifdef ttyfont_scale
+	CCFLAGS := ${CCFLAGS} -DTTY_FONT_SCALE=${ttyfont_scale}
+endif
 
 C_SRCS = main.c tty.c font.c memm.c memm_${ARCH}.c raw.c time.c syscall_${ARCH}.c interrupt_${ARCH}.c
 C_OBJS = ${C_SRCS:.c=.c.o}