From 2cba0207a444fefcb886173e7a252e11a1871c2f Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Fri, 3 Dec 2021 11:12:28 -0700
Subject: Added Makefile Versioning

---
 Unix.mk      |  2 ++
 Win.mk       |  2 ++
 src/kernel.S |  6 +-----
 src/lib.c    | 14 ++++++++++++++
 4 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/Unix.mk b/Unix.mk
index 1cfaebe..6f8be6e 100644
--- a/Unix.mk
+++ b/Unix.mk
@@ -24,6 +24,8 @@ ifeq ($(BSP),2)
 	CFLAGS += -DBSP23
 endif
 
+CFLAGS += -DVERSION="\"0.0b\""
+
 .PHONY: clean run run-debug debug export tree
 
 default: clean build/kernel7.img
diff --git a/Win.mk b/Win.mk
index b992692..09d3195 100644
--- a/Win.mk
+++ b/Win.mk
@@ -24,6 +24,8 @@ ifeq ($(BSP),2)
 	CFLAGS += -DBSP23
 endif
 
+CFLAGS += -DVERSION="\"0.0b\""
+
 .PHONY: clean run run-debug debug export tree
 
 default: clean build/kernel7.img
diff --git a/src/kernel.S b/src/kernel.S
index 4877c4a..452de10 100644
--- a/src/kernel.S
+++ b/src/kernel.S
@@ -7,17 +7,13 @@ kernel_main:
 	bl enable_irq
 	bl enable_fiq
 	bl chk_irq_stat
-	ldr r0, =os_info
-	bl uart_string
+	bl postinit
 kernel_main.loop:
 	bl io_halt
 	b kernel_main.loop
 	pop {lr}
 
 .section ".data"
-.globl os_info
-os_info:
-	.asciz "\033[93mInitialized the Real Time Operating System\033[0m\n\033[96mName\033[0m:    \033[94mTarvaOS\033[0m\n\033[96mVersion\033[0m: \033[95m0.0a\033[0m\n\nQEMU\n====\n Exit        : Ctrl-A x\n Monitor     : Ctrl-A c\n\n"
 .globl cntfrq
 cntfrq:
 	.word 0,0,0,0
diff --git a/src/lib.c b/src/lib.c
index eb3833b..15f5c80 100644
--- a/src/lib.c
+++ b/src/lib.c
@@ -14,6 +14,14 @@ void uart_10(unsigned long);
 
 extern unsigned long cntfrq;
 
+static char* os_info_h = "\033[93mInitialized the Real Time Operating System\033[0m\n\033[96mName\033[0m:    \033[94mTarvaOS\033[0m\n\033[96mVersion\033[0m: \033[95m";
+static char* os_info_t = "\033[0m\n\nQEMU\n====\n Exit        : Ctrl-A x\n Monitor     : Ctrl-A c\n\n";
+#ifndef VERSION
+static char* os_info_v = "?";
+#else
+static char* os_info_v = VERSION;
+#endif
+
 static char* irq_on  = " \033[92mEnabled\033[0m\n";
 static char* irq_off = " \033[91mDisabled\033[0m\n";
 
@@ -134,6 +142,12 @@ void chk_irq_stat() {
 	uart_char(0x0a);
 }
 
+void postinit() {
+	uart_string(os_info_h);
+	uart_string(os_info_v);
+	uart_string(os_info_t);
+}
+
 void uart_10(unsigned long val) {
 	unsigned long t = val;
 	unsigned long c;
-- 
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