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board/freescale/common:Add support of QTAG register

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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>
This commit is contained in:
Prabhakar Kushwaha 2012-12-23 19:24:47 +00:00 committed by Andy Fleming
parent e1dbdd8152
commit 2ae4e8d958
2 changed files with 49 additions and 0 deletions
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46
board/freescale/common/qixis.c
View file

@ -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 @@ void qixis_write(unsigned int reg, u8 value)
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);

3
board/freescale/common/qixis.h
View file

@ -88,6 +88,9 @@ struct qixis {
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)