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authorblogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-12-14 21:59:31 +0000
committerblogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-12-14 21:59:31 +0000
commit7f806dd001a5beb55f1d4a523d83942b00937299 (patch)
treebd539315f53a770ccaf3e027ead7e6ba379b8a6a /target/linux
parent9f5ad54b69092d88862a9fc48f26384303368981 (diff)
add original danube eeprom code
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9760 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/danube/config-2.6.231
-rw-r--r--target/linux/danube/files/arch/mips/danube/Kconfig4
-rw-r--r--target/linux/danube/files/drivers/char/danube_eeprom.c639
-rw-r--r--target/linux/danube/patches/110-drivers.patch5
4 files changed, 647 insertions, 2 deletions
diff --git a/target/linux/danube/config-2.6.23 b/target/linux/danube/config-2.6.23
index 286035a474..07a019ec61 100644
--- a/target/linux/danube/config-2.6.23
+++ b/target/linux/danube/config-2.6.23
@@ -41,6 +41,7 @@ CONFIG_CPU_SUPPORTS_HIGHMEM=y
# CONFIG_CRYPTO_HW is not set
CONFIG_DANUBE=y
CONFIG_DANUBE_ASC_UART=y
+CONFIG_DANUBE_EEPROM=y
CONFIG_DANUBE_GPIO=y
CONFIG_DANUBE_LED=y
CONFIG_DANUBE_MII0=y
diff --git a/target/linux/danube/files/arch/mips/danube/Kconfig b/target/linux/danube/files/arch/mips/danube/Kconfig
index 06404bfe75..fded6d4f0d 100644
--- a/target/linux/danube/files/arch/mips/danube/Kconfig
+++ b/target/linux/danube/files/arch/mips/danube/Kconfig
@@ -24,5 +24,9 @@ config DANUBE_GPIO
bool "Danube gpio"
default y
+config DANUBE_EEPROM
+ bool "Danube eeprom"
+ default y
+
endmenu
diff --git a/target/linux/danube/files/drivers/char/danube_eeprom.c b/target/linux/danube/files/drivers/char/danube_eeprom.c
new file mode 100644
index 0000000000..96fd777274
--- /dev/null
+++ b/target/linux/danube/files/drivers/char/danube_eeprom.c
@@ -0,0 +1,639 @@
+/******************************************************************************
+**
+** FILE NAME : danube_eeprom.c
+** PROJECT : Danube
+** MODULES : EEPROM
+**
+** DATE : 31 DEC 2004
+** AUTHOR : Liu Peng
+** DESCRIPTION : X25040 EEPROM Driver
+** COPYRIGHT : Copyright (c) 2006
+** Infineon Technologies AG
+** Am Campeon 1-12, 85579 Neubiberg, Germany
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** HISTORY
+** $Date $Author $Comment
+** 31 DEC 2004 Liu Peng Initiate Version
+** 25 OCT 2006 Xu Liang Add GPL header.
+*******************************************************************************/
+
+#define IFAP_EEPROM_DRV_VERSION "0.0.1"
+
+/*
+ **************************************************
+ *
+ * This driver was originally based on the INCA-IP driver, but due to
+ * fundamental conceptual drawbacks there has been changed a lot.
+ *
+ * Based on INCA-IP driver Copyright (c) 2003 Gary Jennejohn <gj@denx.de>
+ * Based on the VxWorks drivers Copyright (c) 2002, Infineon Technologies.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#ifndef EXPORT_SYMTAB
+#define EXPORT_SYMTAB
+#endif
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+
+#include <asm/danube/danube.h>
+#include <asm/danube/irq.h>
+#include <asm/danube/ifx_ssc_defines.h>
+#include <asm/danube/ifx_ssc.h>
+#if CONFIG_MODVERSIONS==1
+# include <linux/modversions.h>
+#endif
+
+#define AMAZON_EEPROM_EMSG(fmt,args...) printk("%s:" fmt, __FUNCTION__, ##args)
+
+#if 0
+#define AMAZON_EEPROM_DMSG(fmt,args...) printk("%s:" fmt, __FUNCTION__, ##args)
+#else
+#define AMAZON_EEPROM_DMSG(fmt,args...)
+#endif
+
+MODULE_LICENSE ("GPL");
+MODULE_AUTHOR ("Peng Liu");
+MODULE_DESCRIPTION ("IFAP EEPROM driver");
+MODULE_SUPPORTED_DEVICE ("danube_eeprom");
+MODULE_PARM (maj, "i");
+MODULE_PARM_DESC (maj, "Major device number");
+
+/* allow the user to set the major device number */
+static int maj = 0;
+
+static ssize_t danube_eeprom_read (struct file *, char *, size_t, loff_t *);
+static ssize_t danube_eeprom_write (struct file *, const char *, size_t,
+ loff_t *);
+static int danube_eeprom_ioctl (struct inode *, struct file *, unsigned int,
+ unsigned long);
+static int danube_eeprom_open (struct inode *, struct file *);
+static int danube_eeprom_close (struct inode *, struct file *);
+
+//ifx_ssc.c
+extern int ifx_ssc_init (void);
+extern int ifx_ssc_open (struct inode *inode, struct file *filp);
+extern int ifx_ssc_close (struct inode *inode, struct file *filp);
+extern void ifx_ssc_cleanup_module (void);
+extern int ifx_ssc_ioctl (struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long data);
+extern ssize_t ifx_ssc_kwrite (int port, const char *kbuf, size_t len);
+extern ssize_t ifx_ssc_kread (int port, char *kbuf, size_t len);
+
+extern int ifx_ssc_cs_low (u32 pin);
+extern int ifx_ssc_cs_high (u32 pin);
+extern int ifx_ssc_txrx (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len);
+extern int ifx_ssc_tx (char *tx_buf, u32 tx_len);
+extern int ifx_ssc_rx (char *rx_buf, u32 rx_len);
+
+/* CS: board dependant */
+#define EEPROM_CS IFX_SSC_WHBGPOSTAT_OUT0_POS
+
+/* commands for EEPROM, x25160, x25140 */
+#define EEPROM_WREN ((u8)0x06)
+#define EEPROM_WRDI ((u8)0x04)
+#define EEPROM_RDSR ((u8)0x05)
+#define EEPROM_WRSR ((u8)0x01)
+#define EEPROM_READ ((u8)0x03)
+#define EEPROM_WRITE ((u8)0x02)
+#define EEPROM_PAGE_SIZE 4
+#define EEPROM_SIZE 512
+
+/* Brief: EEPROM_RDSR command
+ * Return: 0 OK
+ * error code
+ */
+static int
+eeprom_rdsr (char *status)
+{
+ int ret = 0;
+ unsigned char cmd = EEPROM_RDSR;
+
+ unsigned long flag;
+ local_irq_save (flag);
+ if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
+ local_irq_restore (flag);
+ return ret;
+ }
+ if ((ret = ifx_ssc_txrx (&cmd, 1, status, 1)) < 0) {
+ ifx_ssc_cs_high (EEPROM_CS);
+ local_irq_restore (flag);
+ return ret;
+ }
+
+ if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
+ local_irq_restore (flag);
+ return ret;
+ }
+ local_irq_restore (flag);
+ return ret;
+}
+
+/* Brief: wait for WIP is over
+ * Return:
+ * 0 WIP is over
+ * <0 Error code
+ */
+static inline int
+eeprom_wip_over (void)
+{
+ int ret = 0;
+ u8 status;
+ while (1) {
+ ret = eeprom_rdsr (&status);
+ AMAZON_EEPROM_DMSG ("status %x \n", status);
+ if (ret) {
+ AMAZON_EEPROM_EMSG ("read back status fails %d\n",
+ ret);
+ break;
+ }
+ else if (((status) & 1) != 0) {
+ AMAZON_EEPROM_DMSG ("read back status not zero %x\n",
+ status);
+ }
+ else {
+ break;
+ }
+ }
+ return ret;
+}
+
+/* Brief: EEPROM_WREN command
+ * Return: 0 OK
+ * error code
+ */
+static int
+eeprom_wren (void)
+{
+ unsigned char cmd = EEPROM_WREN;
+ int ret = 0;
+
+ unsigned long flag;
+ local_irq_save (flag);
+ if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
+ local_irq_restore (flag);
+ return ret;
+ }
+
+ if ((ret = ifx_ssc_tx (&cmd, 1)) < 0) {
+ ifx_ssc_cs_high (EEPROM_CS);
+ local_irq_restore (flag);
+ return ret;
+ }
+
+ if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
+ local_irq_restore (flag);
+ return ret;
+ }
+ local_irq_restore (flag);
+ eeprom_wip_over ();
+ return ret;
+
+}
+
+/* Brief: EEPROM_WRSR command
+ * Return: 0 OK
+ * error code
+ */
+static int
+eeprom_wrsr (void)
+{
+ int ret = 0;
+ unsigned char cmd[2];
+ cmd[0] = EEPROM_WRSR;
+ cmd[1] = 0;
+ if ((ret = eeprom_wren ())) {
+ AMAZON_EEPROM_EMSG ("eeprom_wren fails\n");
+ return ret;
+ }
+ unsigned long flag;
+ local_irq_save (flag);
+ if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
+ goto eeprom_wrsr_err_out;
+ }
+
+ if ((ret = ifx_ssc_tx (cmd, 2)) < 0) {
+ ifx_ssc_cs_high (EEPROM_CS);
+ goto eeprom_wrsr_err_out;
+ }
+
+ if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
+ goto eeprom_wrsr_err_out;
+ }
+ local_irq_restore (flag);
+ eeprom_wip_over ();
+ return ret;
+ eeprom_wrsr_err_out:
+ local_irq_restore (flag);
+ eeprom_wip_over ();
+ return ret;
+}
+
+/* Brief: read EEPROM
+ * Parameter:
+ * addr
+ * len
+ * buf
+ * Return: ok
+ * -EFAULT
+ */
+static int
+eeprom_read (u32 addr, unsigned char *buf, u32 len)
+{
+ int ret = 0;
+ unsigned char write_buf[2];
+ u32 eff = 0;
+
+ unsigned long flag;
+
+ while (1) {
+ eeprom_wip_over ();
+ eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
+ eff = (eff < len) ? eff : len;
+ //Format:
+ //CMD + ADDR
+ local_irq_save (flag);
+ if ((ret = ifx_ssc_cs_low (EEPROM_CS)) < 0) {
+ goto eeprom_read_err_out;
+ }
+
+ write_buf[0] = EEPROM_READ | ((u8) ((addr & 0x100) >> 5));
+ write_buf[1] = (addr & 0xff);
+
+ if ((ret = ifx_ssc_txrx (write_buf, 2, buf, eff)) != eff) {
+ AMAZON_EEPROM_EMSG ("ssc_txrx fails %d\n", ret);
+ ifx_ssc_cs_high (EEPROM_CS);
+ goto eeprom_read_err_out;
+ }
+ buf += ret;
+ len -= ret;
+ addr += ret;
+ if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
+ goto eeprom_read_err_out;
+ }
+ local_irq_restore (flag);
+ if (len <= 0) {
+ break;
+ }
+ }
+
+ return ret;
+ eeprom_read_err_out:
+ local_irq_restore (flag);
+ return ret;
+}
+
+/* Brief: write EEPROm
+ * Parameter:
+ * addr
+ * len
+ * buf
+ * Return: 0 ok
+ * -EFAULT
+ */
+static int
+eeprom_write (u32 addr, unsigned char *buf, u32 len)
+{
+ int ret = 0;
+ u32 eff = 0;
+ unsigned char write_buf[2];
+
+ //unsigned char rx_buf[EEPROM_PAGE_SIZE];
+ //Format:
+ //CMD + ADDR + DATA (up to EEPROM_PAGE_SIZE)
+ while (1) {
+ eeprom_wip_over ();
+ if ((ret = eeprom_wren ())) {
+ AMAZON_EEPROM_EMSG ("eeprom_wren fails\n");
+ return ret;
+ }
+ write_buf[0] = EEPROM_WRITE | ((u8) ((addr & 0x100) >> 5));
+ write_buf[1] = (addr & 0xff);
+
+ eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
+ eff = (eff < len) ? eff : len;
+ AMAZON_EEPROM_DMSG ("EEPROM Write:\n");
+#if 0
+ int i;
+ for (i = 0; i < eff; i++) {
+ printk ("%2x ", buf[i]);
+ if (i % 16 == 15)
+ printk ("\n");
+ }
+ printk ("\n");
+#endif
+
+ if ((ret = ifx_ssc_cs_low (EEPROM_CS))) {
+ return ret;
+ }
+
+ if ((ret = ifx_ssc_tx (write_buf, 2)) < 0) {
+ AMAZON_EEPROM_EMSG ("ssc_tx fails %d\n", ret);
+ ifx_ssc_cs_high (EEPROM_CS);
+ return ret;
+ }
+
+ if ((ret = ifx_ssc_tx (buf, eff)) != eff) {
+ AMAZON_EEPROM_EMSG ("ssc_tx fails %d\n", ret);
+ ifx_ssc_cs_high (EEPROM_CS);
+ return ret;
+ }
+
+ buf += ret;
+ len -= ret;
+ addr += ret;
+
+ if ((ret = ifx_ssc_cs_high (EEPROM_CS))) {
+ return ret;
+ }
+#if 0
+ printk ("<==");
+ eeprom_read ((addr - eff), rx_buf, eff);
+ for (i = 0; i < eff; i++) {
+ printk ("[%x]", rx_buf[i]);
+ }
+ printk ("\n");
+#endif
+ if (len <= 0)
+ break;
+ }
+
+ return ret;
+}
+
+int
+danube_eeprom_open (struct inode *inode, struct file *filp)
+{
+ filp->f_pos = 0;
+ return 0;
+}
+
+int
+danube_eeprom_close (struct inode *inode, struct file *filp)
+{
+ return 0;
+}
+
+int
+danube_eeprom_ioctl (struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long data)
+{
+ return 0;
+}
+
+ssize_t
+danube_eeprom_kread (char *buf, size_t len, u32 addr)
+{
+ int ret = 0;
+ u32 data;
+ printk ("addr:=%d\n", addr);
+ printk ("len:=%d\n", len);
+ if ((addr + len) > EEPROM_SIZE) {
+ AMAZON_EEPROM_EMSG ("invalid len\n");
+ addr = 0;
+ len = EEPROM_SIZE / 2;
+ }
+
+ if ((ret = ifx_ssc_open ((struct inode *) 0, NULL))) {
+ AMAZON_EEPROM_EMSG ("danube_eeprom_open fails\n");
+ goto read_err_out;
+ }
+
+ data = (u32) IFX_SSC_MODE_RXTX;
+ if ((ret =
+ ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET,
+ (unsigned long) &data))) {
+ AMAZON_EEPROM_EMSG ("set RXTX mode fails\n");
+ goto read_err_out;
+ }
+
+ if ((ret = eeprom_wrsr ())) {
+ AMAZON_EEPROM_EMSG ("EEPROM reset fails\n");
+ goto read_err_out;
+ }
+
+ if ((ret = eeprom_read (addr, buf, len))) {
+ AMAZON_EEPROM_EMSG ("eeprom read fails\n");
+ goto read_err_out;
+ }
+
+ read_err_out:
+ if (ifx_ssc_close ((struct inode *) 0, NULL)) {
+ AMAZON_EEPROM_EMSG ("danube_eeprom_close fails\n");
+ }
+ return len;
+
+}
+
+EXPORT_SYMBOL (danube_eeprom_kread);
+
+static ssize_t
+danube_eeprom_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
+{
+ int ret = 0;
+ unsigned char ssc_rx_buf[EEPROM_SIZE];
+ long flag;
+ if (*off >= EEPROM_SIZE)
+ return 0;
+ if (*off + len > EEPROM_SIZE)
+ len = EEPROM_SIZE - *off;
+ if (len == 0)
+ return 0;
+ local_irq_save (flag);
+ if ((ret = danube_eeprom_kread (ssc_rx_buf, len, *off)) < 0) {
+ AMAZON_EEPROM_EMSG ("read fails, err=%x\n", ret);
+ local_irq_restore (flag);
+ return ret;
+ }
+ if (copy_to_user ((void *) ubuf, ssc_rx_buf, ret) != 0) {
+ local_irq_restore (flag);
+ ret = -EFAULT;
+ }
+ local_irq_restore (flag);
+ *off += len;
+ return len;
+}
+
+ssize_t
+danube_eeprom_kwrite (char *buf, size_t len, u32 addr)
+{
+ int ret = 0;
+ u32 data;
+ if ((ret = ifx_ssc_open ((struct inode *) 0, NULL))) {
+ AMAZON_EEPROM_EMSG ("danube_eeprom_open fails\n");
+ goto write_err_out;
+ }
+
+ data = (u32) IFX_SSC_MODE_RXTX;
+ if ((ret =
+ ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET,
+ (unsigned long) &data))) {
+ AMAZON_EEPROM_EMSG ("set RXTX mode fails\n");
+ goto write_err_out;
+ }
+
+ if ((ret = eeprom_wrsr ())) {
+ AMAZON_EEPROM_EMSG ("EEPROM reset fails\n");
+ goto write_err_out;
+ }
+
+ if ((ret = eeprom_write (addr, buf, len))) {
+ AMAZON_EEPROM_EMSG ("eeprom write fails\n");
+ goto write_err_out;
+ }
+
+ write_err_out:
+ if (ifx_ssc_close ((struct inode *) 0, NULL)) {
+ AMAZON_EEPROM_EMSG ("danube_eeprom_close fails\n");
+ }
+ return ret;
+}
+
+EXPORT_SYMBOL (danube_eeprom_kwrite);
+
+static ssize_t
+danube_eeprom_write (struct file *filp, const char *ubuf, size_t len,
+ loff_t * off)
+{
+ int ret = 0;
+ unsigned char ssc_tx_buf[EEPROM_SIZE];
+ if (*off >= EEPROM_SIZE)
+ return 0;
+ if (len + *off > EEPROM_SIZE)
+ len = EEPROM_SIZE - *off;
+ if ((ret = copy_from_user (ssc_tx_buf, ubuf, len))) {
+ return EFAULT;
+ }
+ ret = danube_eeprom_kwrite (ssc_tx_buf, len, *off);
+ if (ret > 0) {
+ *off = ret;
+ }
+ return ret;
+}
+
+loff_t
+danube_eeprom_llseek (struct file * filp, loff_t off, int whence)
+{
+ loff_t newpos;
+ switch (whence) {
+ case 0: /*SEEK_SET */
+ newpos = off;
+ break;
+ case 1: /*SEEK_CUR */
+ newpos = filp->f_pos + off;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (newpos < 0)
+ return -EINVAL;
+ filp->f_pos = newpos;
+ return newpos;
+}
+
+static struct file_operations danube_eeprom_fops = {
+ owner:THIS_MODULE,
+ llseek:danube_eeprom_llseek,
+ /* llseek */
+ read:danube_eeprom_read, /* read */
+ write:danube_eeprom_write,
+ /* write */
+ ioctl:danube_eeprom_ioctl,
+ /* ioctl */
+ open:danube_eeprom_open, /* open */
+ release:danube_eeprom_close,
+ /* release */
+};
+
+int __init
+danube_eeprom_init (void)
+{
+ int ret = 0;
+
+ if ((ret = register_chrdev (maj, "eeprom", &danube_eeprom_fops)) < 0) {
+ printk ("Unable to register major %d for the Infineon Amazon EEPROM\n", maj);
+ if (maj == 0) {
+ goto errout;
+ }
+ else {
+ maj = 0;
+ if ((ret =
+ register_chrdev (maj, "ssc",
+ &danube_eeprom_fops)) < 0) {
+ printk ("Unable to register major 0 for the Infineon Amazon EEPROM\n");
+ goto errout;
+ }
+ }
+ }
+ if (maj == 0)
+ maj = ret;
+ errout:
+ return ret;
+}
+
+void __exit
+danube_eeprom_cleanup_module (void)
+{
+ if (unregister_chrdev (maj, "eeprom")) {
+ printk ("Unable to unregister major %d for the EEPROM\n",
+ maj);
+ }
+}
+
+module_exit (danube_eeprom_cleanup_module);
+module_init (danube_eeprom_init);
+
+#ifndef MODULE
+static int __init
+danube_eeprom_set_maj (char *str)
+{
+ maj = simple_strtol (str, NULL, 0);
+ return 1;
+}
+
+__setup ("eeprom_maj=", danube_eeprom_set_maj);
+#endif /* !MODULE */
diff --git a/target/linux/danube/patches/110-drivers.patch b/target/linux/danube/patches/110-drivers.patch
index 5d170fae53..862504ec01 100644
--- a/target/linux/danube/patches/110-drivers.patch
+++ b/target/linux/danube/patches/110-drivers.patch
@@ -81,11 +81,12 @@ Index: linux-2.6.23/drivers/char/watchdog/Makefile
Index: linux-2.6.23/drivers/char/Makefile
===================================================================
--- linux-2.6.23.orig/drivers/char/Makefile 2007-12-13 20:41:42.000000000 +0100
-+++ linux-2.6.23/drivers/char/Makefile 2007-12-13 21:38:15.000000000 +0100
-@@ -135,3 +135,6 @@
++++ linux-2.6.23/drivers/char/Makefile 2007-12-14 22:30:59.000000000 +0100
+@@ -135,3 +135,7 @@
rm $@.tmp
endif
+
+obj-$(CONFIG_DANUBE_LED) += danube_led.o
+obj-$(CONFIG_DANUBE_GPIO) += danube_gpio.o
++obj-$(CONFIG_DANUBE_EEPROM) += danube_eeprom.o