commit 2ae4e8d9587a3ca9a642ff634c070f66235b571d
author Prabhakar Kushwaha <prabhakar@freescale.com> Sun Dec 23 19:24:47 2012 +0000
committer Andy Fleming <afleming@freescale.com> Wed Jan 30 11:25:10 2013 -0600
tree 38c08edd53639abe1a8fa41f9ee5ef779ef26292
parent e1dbdd81523c7c7de1ac5dee03dd9e4587e808af

board/freescale/common:Add support of QTAG register

QIXIS FPGA's QIXIS Tag Access register (QTAG) defines TAG, VER, DATE, IMAGE
fields. These fields have FPGA build version, image name and build date
information.

Add support to parse these fields to have complete FPGA image information.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

board/freescale/common/qixis.c

diff --git a/board/freescale/common/qixis.c b/board/freescale/common/qixis.c
index c92902a..2cf393b 100644
--- a/board/freescale/common/qixis.c
+++ b/board/freescale/common/qixis.c
@@ -14,6 +14,7 @@
 #include <common.h>
 #include <command.h>
 #include <asm/io.h>
+#include <linux/time.h>
 #include "qixis.h"
 
 u8 qixis_read(unsigned int reg)
@@ -30,6 +31,51 @@
 	out_8(p + reg, value);
 }
 
+u16 qixis_read_minor(void)
+{
+	u16 minor;
+
+	/* this data is in little endian */
+	QIXIS_WRITE(tagdata, 5);
+	minor = QIXIS_READ(tagdata);
+	QIXIS_WRITE(tagdata, 6);
+	minor += QIXIS_READ(tagdata) << 8;
+
+	return minor;
+}
+
+char *qixis_read_time(char *result)
+{
+	time_t time = 0;
+	int i;
+
+	/* timestamp is in 32-bit big endian */
+	for (i = 8; i <= 11; i++) {
+		QIXIS_WRITE(tagdata, i);
+		time =  (time << 8) + QIXIS_READ(tagdata);
+	}
+
+	return ctime_r(&time, result);
+}
+
+char *qixis_read_tag(char *buf)
+{
+	int i;
+	char tag, *ptr = buf;
+
+	for (i = 16; i <= 63; i++) {
+		QIXIS_WRITE(tagdata, i);
+		tag = QIXIS_READ(tagdata);
+		*(ptr++) = tag;
+		if (!tag)
+			break;
+	}
+	if (i > 63)
+		*ptr = '\0';
+
+	return buf;
+}
+
 void qixis_reset(void)
 {
 	QIXIS_WRITE(rst_ctl, QIXIS_RST_CTL_RESET);

board/freescale/common/qixis.h

diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h
index b98b180..4d73461 100644
--- a/board/freescale/common/qixis.h
+++ b/board/freescale/common/qixis.h
@@ -88,6 +88,9 @@
 
 u8 qixis_read(unsigned int reg);
 void qixis_write(unsigned int reg, u8 value);
+u16 qixis_read_minor(void);
+char *qixis_read_time(char *result);
+char *qixis_read_tag(char *buf);
 
 #define QIXIS_READ(reg) qixis_read(offsetof(struct qixis, reg))
 #define QIXIS_WRITE(reg, value) qixis_write(offsetof(struct qixis, reg), value)