compulab: refactor board revision handling

Move board revision handling code to a common location
for further reuse.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Tom Rini <trini@ti.com>

4 files changed, 51 insertions, 7 deletions

diff --git a/board/compulab/common/Makefile b/board/compulab/common/Makefile
index 4044ac9..e343bf0 100644
--- a/board/compulab/common/Makefile
+++ b/board/compulab/common/Makefile
@@ -6,5 +6,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_SYS_I2C) += eeprom.o
-obj-$(CONFIG_LCD) += omap3_display.o
+obj-y				+= common.o
+obj-$(CONFIG_SYS_I2C)		+= eeprom.o
+obj-$(CONFIG_LCD)		+= omap3_display.o
diff --git a/board/compulab/common/common.c b/board/compulab/common/common.c
new file mode 100644
index 0000000..6d2d7b0
--- /dev/null
+++ b/board/compulab/common/common.c
@@ -0,0 +1,25 @@
+/*
+ * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
+ *
+ * Authors: Igor Grinberg <grinberg@compulab.co.il>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/bootm.h>
+
+#include "common.h"
+#include "eeprom.h"
+
+void cl_print_pcb_info(void)
+{
+	u32 board_rev = get_board_rev();
+	u32 rev_major = board_rev / 100;
+	u32 rev_minor = board_rev - (rev_major * 100);
+
+	if ((rev_minor / 10) * 10 == rev_minor)
+		rev_minor = rev_minor / 10;
+
+	printf("PCB:   %u.%u\n", rev_major, rev_minor);
+}
diff --git a/board/compulab/common/common.h b/board/compulab/common/common.h
new file mode 100644
index 0000000..316ee4c
--- /dev/null
+++ b/board/compulab/common/common.h
@@ -0,0 +1,14 @@
+/*
+ * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
+ *
+ * Authors: Igor Grinberg <grinberg@compulab.co.il>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _CL_COMMON_
+#define _CL_COMMON_
+
+void cl_print_pcb_info(void);
+
+#endif /* _CL_COMMON_ */
diff --git a/board/compulab/common/eeprom.c b/board/compulab/common/eeprom.c
index 2df3ada..a45e7be 100644
--- a/board/compulab/common/eeprom.c
+++ b/board/compulab/common/eeprom.c
@@ -109,23 +109,27 @@ int cl_eeprom_read_mac_addr(uchar *buf)
 	return cl_eeprom_read(offset, buf, 6);
 }
 
+static u32 board_rev;
+
 /*
  * Routine: cl_eeprom_get_board_rev
  * Description: read system revision from eeprom
  */
 u32 cl_eeprom_get_board_rev(void)
 {
-	u32 rev = 0;
 	char str[5]; /* Legacy representation can contain at most 4 digits */
 	uint offset = BOARD_REV_OFFSET_LEGACY;
 
+	if (board_rev)
+		return board_rev;
+
 	if (cl_eeprom_setup_layout())
 		return 0;
 
 	if (cl_eeprom_layout != LAYOUT_LEGACY)
 		offset = BOARD_REV_OFFSET;
 
-	if (cl_eeprom_read(offset, (uchar *)&rev, BOARD_REV_SIZE))
+	if (cl_eeprom_read(offset, (uchar *)&board_rev, BOARD_REV_SIZE))
 		return 0;
 
 	/*
@@ -133,9 +137,9 @@ u32 cl_eeprom_get_board_rev(void)
 	 * representation. i.e. for rev 1.00: 0x100 --> 0x64
 	 */
 	if (cl_eeprom_layout == LAYOUT_LEGACY) {
-		sprintf(str, "%x", rev);
-		rev = simple_strtoul(str, NULL, 10);
+		sprintf(str, "%x", board_rev);
+		board_rev = simple_strtoul(str, NULL, 10);
 	}
 
-	return rev;
+	return board_rev;
 };