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-rw-r--r--arch/xtensa/platforms/iss/Makefile6
-rw-r--r--arch/xtensa/platforms/iss/console.c48
-rw-r--r--arch/xtensa/platforms/iss/include/platform/serial.h15
-rw-r--r--arch/xtensa/platforms/iss/include/platform/simcall.h55
-rw-r--r--arch/xtensa/platforms/iss/io.c32
-rw-r--r--arch/xtensa/platforms/iss/network.c353
-rw-r--r--arch/xtensa/platforms/iss/setup.c20
-rw-r--r--arch/xtensa/platforms/iss/simdisk.c384
-rw-r--r--arch/xtensa/platforms/xt2000/setup.c24
-rw-r--r--arch/xtensa/platforms/xtfpga/Makefile9
-rw-r--r--arch/xtensa/platforms/xtfpga/include/platform/hardware.h65
-rw-r--r--arch/xtensa/platforms/xtfpga/include/platform/lcd.h20
-rw-r--r--arch/xtensa/platforms/xtfpga/include/platform/serial.h18
-rw-r--r--arch/xtensa/platforms/xtfpga/lcd.c76
-rw-r--r--arch/xtensa/platforms/xtfpga/setup.c303
15 files changed, 1089 insertions, 339 deletions
diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile
index af96e314d71..b3e89291cfb 100644
--- a/arch/xtensa/platforms/iss/Makefile
+++ b/arch/xtensa/platforms/iss/Makefile
@@ -4,5 +4,7 @@
# "prom monitor" library routines under Linux.
#
-obj-y = io.o console.o setup.o network.o
-
+obj-y = setup.o
+obj-$(CONFIG_TTY) += console.o
+obj-$(CONFIG_NET) += network.o
+obj-$(CONFIG_BLK_DEV_SIMDISK) += simdisk.o
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index f9726f6afdf..70cb408bc20 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -33,7 +33,7 @@
#endif
#define SERIAL_MAX_NUM_LINES 1
-#define SERIAL_TIMER_VALUE (20 * HZ)
+#define SERIAL_TIMER_VALUE (HZ / 10)
static struct tty_driver *serial_driver;
static struct tty_port serial_port;
@@ -41,19 +41,6 @@ static struct timer_list serial_timer;
static DEFINE_SPINLOCK(timer_lock);
-int errno;
-
-static int __simc (int a, int b, int c, int d, int e, int f) __attribute__((__noinline__));
-static int __simc (int a, int b, int c, int d, int e, int f)
-{
- int ret;
- __asm__ __volatile__ ("simcall\n"
- "mov %0, a2\n"
- "mov %1, a3\n" : "=a" (ret), "=a" (errno)
- : : "a2", "a3");
- return ret;
-}
-
static char *serial_version = "0.1";
static char *serial_name = "ISS serial driver";
@@ -69,12 +56,13 @@ static void rs_poll(unsigned long);
static int rs_open(struct tty_struct *tty, struct file * filp)
{
tty->port = &serial_port;
- spin_lock(&timer_lock);
+ spin_lock_bh(&timer_lock);
if (tty->count == 1) {
- setup_timer(&serial_timer, rs_poll, (unsigned long)tty);
+ setup_timer(&serial_timer, rs_poll,
+ (unsigned long)&serial_port);
mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
}
- spin_unlock(&timer_lock);
+ spin_unlock_bh(&timer_lock);
return 0;
}
@@ -104,28 +92,26 @@ static int rs_write(struct tty_struct * tty,
{
/* see drivers/char/serialX.c to reference original version */
- __simc (SYS_write, 1, (unsigned long)buf, count, 0, 0);
+ simc_write(1, buf, count);
return count;
}
static void rs_poll(unsigned long priv)
{
- struct tty_struct* tty = (struct tty_struct*) priv;
-
- struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
+ struct tty_port *port = (struct tty_port *)priv;
int i = 0;
unsigned char c;
spin_lock(&timer_lock);
- while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){
- __simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);
- tty_insert_flip_char(tty, c, TTY_NORMAL);
+ while (simc_poll(0)) {
+ simc_read(0, &c, 1);
+ tty_insert_flip_char(port, c, TTY_NORMAL);
i++;
}
if (i)
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(port);
mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
@@ -135,12 +121,7 @@ static void rs_poll(unsigned long priv)
static int rs_put_char(struct tty_struct *tty, unsigned char ch)
{
- char buf[2];
-
- buf[0] = ch;
- buf[1] = '\0'; /* Is this NULL necessary? */
- __simc (SYS_write, 1, (unsigned long) buf, 1, 0, 0);
- return 1;
+ return rs_write(tty, &ch, 1);
}
static void rs_flush_chars(struct tty_struct *tty)
@@ -223,6 +204,7 @@ int __init rs_init(void)
serial_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(serial_driver, &serial_ops);
+ tty_port_link_device(&serial_port, serial_driver, 0);
if (tty_register_driver(serial_driver))
panic("Couldn't register serial driver\n");
@@ -238,6 +220,7 @@ static __exit void rs_exit(void)
printk("ISS_SERIAL: failed to unregister serial driver (%d)\n",
error);
put_tty_driver(serial_driver);
+ tty_port_destroy(&serial_port);
}
@@ -260,8 +243,7 @@ static void iss_console_write(struct console *co, const char *s, unsigned count)
int len = strlen(s);
if (s != 0 && *s != 0)
- __simc (SYS_write, 1, (unsigned long)s,
- count < len ? count : len,0,0);
+ simc_write(1, s, count < len ? count : len);
}
static struct tty_driver* iss_console_device(struct console *c, int *index)
diff --git a/arch/xtensa/platforms/iss/include/platform/serial.h b/arch/xtensa/platforms/iss/include/platform/serial.h
new file mode 100644
index 00000000000..16aec542d43
--- /dev/null
+++ b/arch/xtensa/platforms/iss/include/platform/serial.h
@@ -0,0 +1,15 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 Tensilica Inc.
+ */
+
+#ifndef __ASM_XTENSA_ISS_SERIAL_H
+#define __ASM_XTENSA_ISS_SERIAL_H
+
+/* Have no meaning on ISS, but needed for 8250_early.c */
+#define BASE_BAUD 0
+
+#endif /* __ASM_XTENSA_ISS_SERIAL_H */
diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h
index b7952c06a2b..12b15ad1e58 100644
--- a/arch/xtensa/platforms/iss/include/platform/simcall.h
+++ b/arch/xtensa/platforms/iss/include/platform/simcall.h
@@ -57,6 +57,61 @@
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
+static int errno;
+
+static inline int __simc(int a, int b, int c, int d)
+{
+ int ret;
+ register int a1 asm("a2") = a;
+ register int b1 asm("a3") = b;
+ register int c1 asm("a4") = c;
+ register int d1 asm("a5") = d;
+ __asm__ __volatile__ (
+ "simcall\n"
+ "mov %0, a2\n"
+ "mov %1, a3\n"
+ : "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
+ : "r"(c1), "r"(d1)
+ : "memory");
+ return ret;
+}
+
+static inline int simc_open(const char *file, int flags, int mode)
+{
+ return __simc(SYS_open, (int) file, flags, mode);
+}
+
+static inline int simc_close(int fd)
+{
+ return __simc(SYS_close, fd, 0, 0);
+}
+
+static inline int simc_ioctl(int fd, int request, void *arg)
+{
+ return __simc(SYS_ioctl, fd, request, (int) arg);
+}
+
+static inline int simc_read(int fd, void *buf, size_t count)
+{
+ return __simc(SYS_read, fd, (int) buf, count);
+}
+
+static inline int simc_write(int fd, const void *buf, size_t count)
+{
+ return __simc(SYS_write, fd, (int) buf, count);
+}
+
+static inline int simc_poll(int fd)
+{
+ struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
+
+ return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv);
+}
+
+static inline int simc_lseek(int fd, uint32_t off, int whence)
+{
+ return __simc(SYS_lseek, fd, off, whence);
+}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
diff --git a/arch/xtensa/platforms/iss/io.c b/arch/xtensa/platforms/iss/io.c
deleted file mode 100644
index 571d0b24f89..00000000000
--- a/arch/xtensa/platforms/iss/io.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* This file isn't really needed right now. */
-
-#if 0
-
-#include <asm/io.h>
-#include <platform/platform-iss/simcall.h>
-
-extern int __simc ();
-
-
-char iss_serial_getc()
-{
- char c;
- __simc( SYS_read, 0, &c, 1 );
- return c;
-}
-
-void iss_serial_putc( char c )
-{
- __simc( SYS_write, 1, &c, 1 );
-}
-
-void iss_serial_puts( char *s )
-{
- if( s != 0 && *s != 0 )
- __simc( SYS_write, 1, s, strlen(s) );
-}
-
-/*#error Need I/O ports to specific hardware!*/
-
-#endif
-
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index 7dde2445642..d05f8feeb8d 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -38,7 +38,7 @@
#define DRIVER_NAME "iss-netdev"
#define ETH_MAX_PACKET 1500
#define ETH_HEADER_OTHER 14
-#define ISS_NET_TIMER_VALUE (2 * HZ)
+#define ISS_NET_TIMER_VALUE (HZ / 10)
static DEFINE_SPINLOCK(opened_lock);
@@ -56,8 +56,6 @@ static LIST_HEAD(devices);
struct tuntap_info {
char dev_name[IFNAMSIZ];
- int fixed_config;
- unsigned char gw[ETH_ALEN];
int fd;
};
@@ -67,7 +65,6 @@ struct tuntap_info {
/* This structure contains out private information for the driver. */
struct iss_net_private {
-
struct list_head device_list;
struct list_head opened_list;
@@ -83,9 +80,6 @@ struct iss_net_private {
int index;
int mtu;
- unsigned char mac[ETH_ALEN];
- int have_mac;
-
struct {
union {
struct tuntap_info tuntap;
@@ -101,55 +95,6 @@ struct iss_net_private {
};
-/* ======================= ISS SIMCALL INTERFACE =========================== */
-
-/* Note: __simc must _not_ be declared inline! */
-
-static int errno;
-
-static int __simc (int a, int b, int c, int d, int e, int f) __attribute__((__noinline__));
-static int __simc (int a, int b, int c, int d, int e, int f)
-{
- int ret;
- __asm__ __volatile__ ("simcall\n"
- "mov %0, a2\n"
- "mov %1, a3\n" : "=a" (ret), "=a" (errno)
- : : "a2", "a3");
- return ret;
-}
-
-static int inline simc_open(char *file, int flags, int mode)
-{
- return __simc(SYS_open, (int) file, flags, mode, 0, 0);
-}
-
-static int inline simc_close(int fd)
-{
- return __simc(SYS_close, fd, 0, 0, 0, 0);
-}
-
-static int inline simc_ioctl(int fd, int request, void *arg)
-{
- return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
-}
-
-static int inline simc_read(int fd, void *buf, size_t count)
-{
- return __simc(SYS_read, fd, (int) buf, count, 0, 0);
-}
-
-static int inline simc_write(int fd, void *buf, size_t count)
-{
- return __simc(SYS_write, fd, (int) buf, count, 0, 0);
-}
-
-static int inline simc_poll(int fd)
-{
- struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
-
- return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,0,0);
-}
-
/* ================================ HELPERS ================================ */
@@ -167,68 +112,48 @@ static char *split_if_spec(char *str, ...)
*arg = str;
if (end == NULL)
return NULL;
- *end ++ = '\0';
+ *end++ = '\0';
str = end;
}
va_end(ap);
return str;
}
+/* Set Ethernet address of the specified device. */
-#if 0
-/* Adjust SKB. */
-
-struct sk_buff *ether_adjust_skb(struct sk_buff *skb, int extra)
+static void setup_etheraddr(struct net_device *dev, char *str)
{
- if ((skb != NULL) && (skb_tailroom(skb) < extra)) {
- struct sk_buff *skb2;
+ unsigned char *addr = dev->dev_addr;
- skb2 = skb_copy_expand(skb, 0, extra, GFP_ATOMIC);
- dev_kfree_skb(skb);
- skb = skb2;
- }
- if (skb != NULL)
- skb_put(skb, extra);
+ if (str == NULL)
+ goto random;
- return skb;
-}
-#endif
-
-/* Return the IP address as a string for a given device. */
-
-static void dev_ip_addr(void *d, char *buf, char *bin_buf)
-{
- struct net_device *dev = d;
- struct in_device *ip = dev->ip_ptr;
- struct in_ifaddr *in;
- __be32 addr;
-
- if ((ip == NULL) || ((in = ip->ifa_list) == NULL)) {
- printk(KERN_WARNING "Device not assigned an IP address!\n");
- return;
+ if (!mac_pton(str, addr)) {
+ pr_err("%s: failed to parse '%s' as an ethernet address\n",
+ dev->name, str);
+ goto random;
}
-
- addr = in->ifa_address;
- sprintf(buf, "%d.%d.%d.%d", addr & 0xff, (addr >> 8) & 0xff,
- (addr >> 16) & 0xff, addr >> 24);
-
- if (bin_buf) {
- bin_buf[0] = addr & 0xff;
- bin_buf[1] = (addr >> 8) & 0xff;
- bin_buf[2] = (addr >> 16) & 0xff;
- bin_buf[3] = addr >> 24;
+ if (is_multicast_ether_addr(addr)) {
+ pr_err("%s: attempt to assign a multicast ethernet address\n",
+ dev->name);
+ goto random;
}
-}
-
-/* Set Ethernet address of the specified device. */
+ if (!is_valid_ether_addr(addr)) {
+ pr_err("%s: attempt to assign an invalid ethernet address\n",
+ dev->name);
+ goto random;
+ }
+ if (!is_local_ether_addr(addr))
+ pr_warn("%s: assigning a globally valid ethernet address\n",
+ dev->name);
+ return;
-static void inline set_ether_mac(void *d, unsigned char *addr)
-{
- struct net_device *dev = d;
- memcpy(dev->dev_addr, addr, ETH_ALEN);
+random:
+ pr_info("%s: choosing a random ethernet address\n",
+ dev->name);
+ eth_hw_addr_random(dev);
}
-
/* ======================= TUNTAP TRANSPORT INTERFACE ====================== */
static int tuntap_open(struct iss_net_private *lp)
@@ -238,24 +163,21 @@ static int tuntap_open(struct iss_net_private *lp)
int err = -EINVAL;
int fd;
- /* We currently only support a fixed configuration. */
-
- if (!lp->tp.info.tuntap.fixed_config)
- return -EINVAL;
-
- if ((fd = simc_open("/dev/net/tun", 02, 0)) < 0) { /* O_RDWR */
- printk("Failed to open /dev/net/tun, returned %d "
- "(errno = %d)\n", fd, errno);
+ fd = simc_open("/dev/net/tun", 02, 0); /* O_RDWR */
+ if (fd < 0) {
+ pr_err("%s: failed to open /dev/net/tun, returned %d (errno = %d)\n",
+ lp->dev->name, fd, errno);
return fd;
}
- memset(&ifr, 0, sizeof ifr);
+ memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
- strlcpy(ifr.ifr_name, dev_name, sizeof ifr.ifr_name);
+ strlcpy(ifr.ifr_name, dev_name, sizeof(ifr.ifr_name));
- if ((err = simc_ioctl(fd, TUNSETIFF, (void*) &ifr)) < 0) {
- printk("Failed to set interface, returned %d "
- "(errno = %d)\n", err, errno);
+ err = simc_ioctl(fd, TUNSETIFF, &ifr);
+ if (err < 0) {
+ pr_err("%s: failed to set interface %s, returned %d (errno = %d)\n",
+ lp->dev->name, dev_name, err, errno);
simc_close(fd);
return err;
}
@@ -266,27 +188,17 @@ static int tuntap_open(struct iss_net_private *lp)
static void tuntap_close(struct iss_net_private *lp)
{
-#if 0
- if (lp->tp.info.tuntap.fixed_config)
- iter_addresses(lp->tp.info.tuntap.dev, close_addr, lp->host.dev_name);
-#endif
simc_close(lp->tp.info.tuntap.fd);
lp->tp.info.tuntap.fd = -1;
}
-static int tuntap_read (struct iss_net_private *lp, struct sk_buff **skb)
+static int tuntap_read(struct iss_net_private *lp, struct sk_buff **skb)
{
-#if 0
- *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
- if (*skb == NULL)
- return -ENOMEM;
-#endif
-
return simc_read(lp->tp.info.tuntap.fd,
(*skb)->data, (*skb)->dev->mtu + ETH_HEADER_OTHER);
}
-static int tuntap_write (struct iss_net_private *lp, struct sk_buff **skb)
+static int tuntap_write(struct iss_net_private *lp, struct sk_buff **skb)
{
return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);
}
@@ -302,45 +214,45 @@ static int tuntap_poll(struct iss_net_private *lp)
}
/*
- * Currently only a device name is supported.
- * ethX=tuntap[,[mac address][,[device name]]]
+ * ethX=tuntap,[mac address],device name
*/
static int tuntap_probe(struct iss_net_private *lp, int index, char *init)
{
- const int len = strlen(TRANSPORT_TUNTAP_NAME);
+ struct net_device *dev = lp->dev;
char *dev_name = NULL, *mac_str = NULL, *rem = NULL;
/* Transport should be 'tuntap': ethX=tuntap,mac,dev_name */
- if (strncmp(init, TRANSPORT_TUNTAP_NAME, len))
+ if (strncmp(init, TRANSPORT_TUNTAP_NAME,
+ sizeof(TRANSPORT_TUNTAP_NAME) - 1))
return 0;
- if (*(init += strlen(TRANSPORT_TUNTAP_NAME)) == ',') {
- if ((rem=split_if_spec(init+1, &mac_str, &dev_name)) != NULL) {
- printk("Extra garbage on specification : '%s'\n", rem);
+ init += sizeof(TRANSPORT_TUNTAP_NAME) - 1;
+ if (*init == ',') {
+ rem = split_if_spec(init + 1, &mac_str, &dev_name);
+ if (rem != NULL) {
+ pr_err("%s: extra garbage on specification : '%s'\n",
+ dev->name, rem);
return 0;
}
} else if (*init != '\0') {
- printk("Invalid argument: %s. Skipping device!\n", init);
+ pr_err("%s: invalid argument: %s. Skipping device!\n",
+ dev->name, init);
return 0;
}
- if (dev_name) {
- strncpy(lp->tp.info.tuntap.dev_name, dev_name,
- sizeof lp->tp.info.tuntap.dev_name);
- lp->tp.info.tuntap.fixed_config = 1;
- } else
- strcpy(lp->tp.info.tuntap.dev_name, TRANSPORT_TUNTAP_NAME);
+ if (!dev_name) {
+ pr_err("%s: missing tuntap device name\n", dev->name);
+ return 0;
+ }
+ strlcpy(lp->tp.info.tuntap.dev_name, dev_name,
+ sizeof(lp->tp.info.tuntap.dev_name));
-#if 0
- if (setup_etheraddr(mac_str, lp->mac))
- lp->have_mac = 1;
-#endif
- lp->mtu = TRANSPORT_TUNTAP_MTU;
+ setup_etheraddr(dev, mac_str);
- //lp->info.tuntap.gate_addr = gate_addr;
+ lp->mtu = TRANSPORT_TUNTAP_MTU;
lp->tp.info.tuntap.fd = -1;
@@ -351,13 +263,6 @@ static int tuntap_probe(struct iss_net_private *lp, int index, char *init)
lp->tp.protocol = tuntap_protocol;
lp->tp.poll = tuntap_poll;
- printk("TUN/TAP backend - ");
-#if 0
- if (lp->host.gate_addr != NULL)
- printk("IP = %s", lp->host.gate_addr);
-#endif
- printk("\n");
-
return 1;
}
@@ -376,7 +281,8 @@ static int iss_net_rx(struct net_device *dev)
/* Try to allocate memory, if it fails, try again next round. */
- if ((skb = dev_alloc_skb(dev->mtu + 2 + ETH_HEADER_OTHER)) == NULL) {
+ skb = dev_alloc_skb(dev->mtu + 2 + ETH_HEADER_OTHER);
+ if (skb == NULL) {
lp->stats.rx_dropped++;
return 0;
}
@@ -396,7 +302,6 @@ static int iss_net_rx(struct net_device *dev)
lp->stats.rx_bytes += skb->len;
lp->stats.rx_packets++;
- // netif_rx(skb);
netif_rx_ni(skb);
return pkt_len;
}
@@ -427,11 +332,11 @@ static int iss_net_poll(void)
spin_unlock(&lp->lock);
if (err < 0) {
- printk(KERN_ERR "Device '%s' read returned %d, "
- "shutting it down\n", lp->dev->name, err);
+ pr_err("Device '%s' read returned %d, shutting it down\n",
+ lp->dev->name, err);
dev_close(lp->dev);
} else {
- // FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ);
+ /* FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ); */
}
}
@@ -442,14 +347,11 @@ static int iss_net_poll(void)
static void iss_net_timer(unsigned long priv)
{
- struct iss_net_private* lp = (struct iss_net_private*) priv;
+ struct iss_net_private *lp = (struct iss_net_private *)priv;
spin_lock(&lp->lock);
-
iss_net_poll();
-
mod_timer(&lp->timer, jiffies + lp->timer_val);
-
spin_unlock(&lp->lock);
}
@@ -457,19 +359,14 @@ static void iss_net_timer(unsigned long priv)
static int iss_net_open(struct net_device *dev)
{
struct iss_net_private *lp = netdev_priv(dev);
- char addr[sizeof "255.255.255.255\0"];
int err;
spin_lock(&lp->lock);
- if ((err = lp->tp.open(lp)) < 0)
+ err = lp->tp.open(lp);
+ if (err < 0)
goto out;
- if (!lp->have_mac) {
- dev_ip_addr(dev, addr, &lp->mac[2]);
- set_ether_mac(dev, lp->mac);
- }
-
netif_start_queue(dev);
/* clear buffer - it can happen that the host side of the interface
@@ -497,7 +394,6 @@ out:
static int iss_net_close(struct net_device *dev)
{
struct iss_net_private *lp = netdev_priv(dev);
-printk("iss_net_close!\n");
netif_stop_queue(dev);
spin_lock(&lp->lock);
@@ -539,7 +435,7 @@ static int iss_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
} else {
netif_start_queue(dev);
- printk(KERN_ERR "iss_net_start_xmit: failed(%d)\n", len);
+ pr_err("%s: %s failed(%d)\n", dev->name, __func__, len);
}
spin_unlock_irqrestore(&lp->lock, flags);
@@ -557,56 +453,27 @@ static struct net_device_stats *iss_net_get_stats(struct net_device *dev)
static void iss_net_set_multicast_list(struct net_device *dev)
{
-#if 0
- if (dev->flags & IFF_PROMISC)
- return;
- else if (!netdev_mc_empty(dev))
- dev->flags |= IFF_ALLMULTI;
- else
- dev->flags &= ~IFF_ALLMULTI;
-#endif
}
static void iss_net_tx_timeout(struct net_device *dev)
{
-#if 0
- dev->trans_start = jiffies;
- netif_wake_queue(dev);
-#endif
}
static int iss_net_set_mac(struct net_device *dev, void *addr)
{
-#if 0
struct iss_net_private *lp = netdev_priv(dev);
struct sockaddr *hwaddr = addr;
+ if (!is_valid_ether_addr(hwaddr->sa_data))
+ return -EADDRNOTAVAIL;
spin_lock(&lp->lock);
memcpy(dev->dev_addr, hwaddr->sa_data, ETH_ALEN);
spin_unlock(&lp->lock);
-#endif
-
return 0;
}
static int iss_net_change_mtu(struct net_device *dev, int new_mtu)
{
-#if 0
- struct iss_net_private *lp = netdev_priv(dev);
- int err = 0;
-
- spin_lock(&lp->lock);
-
- // FIXME not needed new_mtu = transport_set_mtu(new_mtu, &lp->user);
-
- if (new_mtu < 0)
- err = new_mtu;
- else
- dev->mtu = new_mtu;
-
- spin_unlock(&lp->lock);
- return err;
-#endif
return -EINVAL;
}
@@ -631,7 +498,6 @@ static const struct net_device_ops iss_netdev_ops = {
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = iss_net_change_mtu,
.ndo_set_mac_address = iss_net_set_mac,
- //.ndo_do_ioctl = iss_net_ioctl,
.ndo_tx_timeout = iss_net_tx_timeout,
.ndo_set_rx_mode = iss_net_set_multicast_list,
};
@@ -642,24 +508,29 @@ static int iss_net_configure(int index, char *init)
struct iss_net_private *lp;
int err;
- if ((dev = alloc_etherdev(sizeof *lp)) == NULL) {
- printk(KERN_ERR "eth_configure: failed to allocate device\n");
+ dev = alloc_etherdev(sizeof(*lp));
+ if (dev == NULL) {
+ pr_err("eth_configure: failed to allocate device\n");
return 1;
}
/* Initialize private element. */
lp = netdev_priv(dev);
- *lp = ((struct iss_net_private) {
+ *lp = (struct iss_net_private) {
.device_list = LIST_HEAD_INIT(lp->device_list),
.opened_list = LIST_HEAD_INIT(lp->opened_list),
.lock = __SPIN_LOCK_UNLOCKED(lp.lock),
.dev = dev,
.index = index,
- //.fd = -1,
- .mac = { 0xfe, 0xfd, 0x0, 0x0, 0x0, 0x0 },
- .have_mac = 0,
- });
+ };
+
+ /*
+ * If this name ends up conflicting with an existing registered
+ * netdevice, that is OK, register_netdev{,ice}() will notice this
+ * and fail.
+ */
+ snprintf(dev->name, sizeof(dev->name), "eth%d", index);
/*
* Try all transport protocols.
@@ -667,14 +538,12 @@ static int iss_net_configure(int index, char *init)
*/
if (!tuntap_probe(lp, index, init)) {
- printk("Invalid arguments. Skipping device!\n");
+ pr_err("%s: invalid arguments. Skipping device!\n",
+ dev->name);
goto errout;
}
- printk(KERN_INFO "Netdevice %d ", index);
- if (lp->have_mac)
- printk("(%pM) ", lp->mac);
- printk(": ");
+ pr_info("Netdevice %d (%pM)\n", index, dev->dev_addr);
/* sysfs register */
@@ -690,14 +559,7 @@ static int iss_net_configure(int index, char *init)
lp->pdev.id = index;
lp->pdev.name = DRIVER_NAME;
platform_device_register(&lp->pdev);
- SET_NETDEV_DEV(dev,&lp->pdev.dev);
-
- /*
- * If this name ends up conflicting with an existing registered
- * netdevice, that is OK, register_netdev{,ice}() will notice this
- * and fail.
- */
- snprintf(dev->name, sizeof dev->name, "eth%d", index);
+ SET_NETDEV_DEV(dev, &lp->pdev.dev);
dev->netdev_ops = &iss_netdev_ops;
dev->mtu = lp->mtu;
@@ -709,7 +571,7 @@ static int iss_net_configure(int index, char *init)
rtnl_unlock();
if (err) {
- printk("Error registering net device!\n");
+ pr_err("%s: error registering net device!\n", dev->name);
/* XXX: should we call ->remove() here? */
free_netdev(dev);
return 1;
@@ -718,16 +580,11 @@ static int iss_net_configure(int index, char *init)
init_timer(&lp->tl);
lp->tl.function = iss_net_user_timer_expire;
-#if 0
- if (lp->have_mac)
- set_ether_mac(dev, lp->mac);
-#endif
return 0;
errout:
- // FIXME: unregister; free, etc..
+ /* FIXME: unregister; free, etc.. */
return -EIO;
-
}
/* ------------------------------------------------------------------------- */
@@ -749,27 +606,28 @@ struct iss_net_init {
#define ERR KERN_ERR "iss_net_setup: "
-static int iss_net_setup(char *str)
+static int __init iss_net_setup(char *str)
{
struct iss_net_private *device = NULL;
struct iss_net_init *new;
struct list_head *ele;
char *end;
- int n;
+ int rc;
+ unsigned n;
- n = simple_strtoul(str, &end, 0);
- if (end == str) {
- printk(ERR "Failed to parse '%s'\n", str);
- return 1;
- }
- if (n < 0) {
- printk(ERR "Device %d is negative\n", n);
+ end = strchr(str, '=');
+ if (!end) {
+ printk(ERR "Expected '=' after device number\n");
return 1;
}
- if (*(str = end) != '=') {
- printk(ERR "Expected '=' after device number\n");
+ *end = 0;
+ rc = kstrtouint(str, 0, &n);
+ *end = '=';
+ if (rc < 0) {
+ printk(ERR "Failed to parse '%s'\n", str);
return 1;
}
+ str = end;
spin_lock(&devices_lock);
@@ -782,12 +640,13 @@ static int iss_net_setup(char *str)
spin_unlock(&devices_lock);
if (device && device->index == n) {
- printk(ERR "Device %d already configured\n", n);
+ printk(ERR "Device %u already configured\n", n);
return 1;
}
- if ((new = alloc_bootmem(sizeof new)) == NULL) {
- printk("Alloc_bootmem failed\n");
+ new = alloc_bootmem(sizeof(*new));
+ if (new == NULL) {
+ printk(ERR "Alloc_bootmem failed\n");
return 1;
}
@@ -801,7 +660,7 @@ static int iss_net_setup(char *str)
#undef ERR
-__setup("eth=", iss_net_setup);
+__setup("eth", iss_net_setup);
/*
* Initialize all ISS Ethernet devices previously registered in iss_net_setup.
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index f60c8cf6dfb..da7d1824086 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -40,14 +40,14 @@ void __init platform_init(bp_tag_t* bootparam)
void platform_halt(void)
{
- printk (" ** Called platform_halt(), looping forever! **\n");
- while (1);
+ pr_info(" ** Called platform_halt() **\n");
+ __asm__ __volatile__("movi a2, 1\nsimcall\n");
}
void platform_power_off(void)
{
- printk (" ** Called platform_power_off(), looping forever! **\n");
- while (1);
+ pr_info(" ** Called platform_power_off() **\n");
+ __asm__ __volatile__("movi a2, 1\nsimcall\n");
}
void platform_restart(void)
{
@@ -55,13 +55,15 @@ void platform_restart(void)
* jump to the reset vector. */
__asm__ __volatile__("movi a2, 15\n\t"
- "wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
+ "wsr a2, icountlevel\n\t"
"movi a2, 0\n\t"
- "wsr a2, " __stringify(ICOUNT) "\n\t"
- "wsr a2, " __stringify(IBREAKENABLE) "\n\t"
- "wsr a2, " __stringify(LCOUNT) "\n\t"
+ "wsr a2, icount\n\t"
+#if XCHAL_NUM_IBREAK > 0
+ "wsr a2, ibreakenable\n\t"
+#endif
+ "wsr a2, lcount\n\t"
"movi a2, 0x1f\n\t"
- "wsr a2, " __stringify(PS) "\n\t"
+ "wsr a2, ps\n\t"
"isync\n\t"
"jx %0\n\t"
:
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
new file mode 100644
index 00000000000..48eebacdf5f
--- /dev/null
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -0,0 +1,384 @@
+/*
+ * arch/xtensa/platforms/iss/simdisk.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001-2013 Tensilica Inc.
+ * Authors Victor Prupis
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/blkdev.h>
+#include <linux/bio.h>
+#include <linux/proc_fs.h>
+#include <asm/uaccess.h>
+#include <platform/simcall.h>
+
+#define SIMDISK_MAJOR 240
+#define SECTOR_SHIFT 9
+#define SIMDISK_MINORS 1
+#define MAX_SIMDISK_COUNT 10
+
+struct simdisk {
+ const char *filename;
+ spinlock_t lock;
+ struct request_queue *queue;
+ struct gendisk *gd;
+ struct proc_dir_entry *procfile;
+ int users;
+ unsigned long size;
+ int fd;
+};
+
+
+static int simdisk_count = CONFIG_BLK_DEV_SIMDISK_COUNT;
+module_param(simdisk_count, int, S_IRUGO);
+MODULE_PARM_DESC(simdisk_count, "Number of simdisk units.");
+
+static int n_files;
+static const char *filename[MAX_SIMDISK_COUNT] = {
+#ifdef CONFIG_SIMDISK0_FILENAME
+ CONFIG_SIMDISK0_FILENAME,
+#ifdef CONFIG_SIMDISK1_FILENAME
+ CONFIG_SIMDISK1_FILENAME,
+#endif
+#endif
+};
+
+static int simdisk_param_set_filename(const char *val,
+ const struct kernel_param *kp)
+{
+ if (n_files < ARRAY_SIZE(filename))
+ filename[n_files++] = val;
+ else
+ return -EINVAL;
+ return 0;
+}
+
+static const struct kernel_param_ops simdisk_param_ops_filename = {
+ .set = simdisk_param_set_filename,
+};
+module_param_cb(filename, &simdisk_param_ops_filename, &n_files, 0);
+MODULE_PARM_DESC(filename, "Backing storage filename.");
+
+static int simdisk_major = SIMDISK_MAJOR;
+
+static void simdisk_transfer(struct simdisk *dev, unsigned long sector,
+ unsigned long nsect, char *buffer, int write)
+{
+ unsigned long offset = sector << SECTOR_SHIFT;
+ unsigned long nbytes = nsect << SECTOR_SHIFT;
+
+ if (offset > dev->size || dev->size - offset < nbytes) {
+ pr_notice("Beyond-end %s (%ld %ld)\n",
+ write ? "write" : "read", offset, nbytes);
+ return;
+ }
+
+ spin_lock(&dev->lock);
+ while (nbytes > 0) {
+ unsigned long io;
+
+ simc_lseek(dev->fd, offset, SEEK_SET);
+ if (write)
+ io = simc_write(dev->fd, buffer, nbytes);
+ else
+ io = simc_read(dev->fd, buffer, nbytes);
+ if (io == -1) {
+ pr_err("SIMDISK: IO error %d\n", errno);
+ break;
+ }
+ buffer += io;
+ offset += io;
+ nbytes -= io;
+ }
+ spin_unlock(&dev->lock);
+}
+
+static int simdisk_xfer_bio(struct simdisk *dev, struct bio *bio)
+{
+ struct bio_vec bvec;
+ struct bvec_iter iter;
+ sector_t sector = bio->bi_iter.bi_sector;
+
+ bio_for_each_segment(bvec, bio, iter) {
+ char *buffer = __bio_kmap_atomic(bio, iter);
+ unsigned len = bvec.bv_len >> SECTOR_SHIFT;
+
+ simdisk_transfer(dev, sector, len, buffer,
+ bio_data_dir(bio) == WRITE);
+ sector += len;
+ __bio_kunmap_atomic(buffer);
+ }
+ return 0;
+}
+
+static void simdisk_make_request(struct request_queue *q, struct bio *bio)
+{
+ struct simdisk *dev = q->queuedata;
+ int status = simdisk_xfer_bio(dev, bio);
+ bio_endio(bio, status);
+}
+
+
+static int simdisk_open(struct block_device *bdev, fmode_t mode)
+{
+ struct simdisk *dev = bdev->bd_disk->private_data;
+
+ spin_lock(&dev->lock);
+ if (!dev->users)
+ check_disk_change(bdev);
+ ++dev->users;
+ spin_unlock(&dev->lock);
+ return 0;
+}
+
+static void simdisk_release(struct gendisk *disk, fmode_t mode)
+{
+ struct simdisk *dev = disk->private_data;
+ spin_lock(&dev->lock);
+ --dev->users;
+ spin_unlock(&dev->lock);
+}
+
+static const struct block_device_operations simdisk_ops = {
+ .owner = THIS_MODULE,
+ .open = simdisk_open,
+ .release = simdisk_release,
+};
+
+static struct simdisk *sddev;
+static struct proc_dir_entry *simdisk_procdir;
+
+static int simdisk_attach(struct simdisk *dev, const char *filename)
+{
+ int err = 0;
+
+ filename = kstrdup(filename, GFP_KERNEL);
+ if (filename == NULL)
+ return -ENOMEM;
+
+ spin_lock(&dev->lock);
+
+ if (dev->fd != -1) {
+ err = -EBUSY;
+ goto out;
+ }
+ dev->fd = simc_open(filename, O_RDWR, 0);
+ if (dev->fd == -1) {
+ pr_err("SIMDISK: Can't open %s: %d\n", filename, errno);
+ err = -ENODEV;
+ goto out;
+ }
+ dev->size = simc_lseek(dev->fd, 0, SEEK_END);
+ set_capacity(dev->gd, dev->size >> SECTOR_SHIFT);
+ dev->filename = filename;
+ pr_info("SIMDISK: %s=%s\n", dev->gd->disk_name, dev->filename);
+out:
+ if (err)
+ kfree(filename);
+ spin_unlock(&dev->lock);
+
+ return err;
+}
+
+static int simdisk_detach(struct simdisk *dev)
+{
+ int err = 0;
+
+ spin_lock(&dev->lock);
+
+ if (dev->users != 0) {
+ err = -EBUSY;
+ } else if (dev->fd != -1) {
+ if (simc_close(dev->fd)) {
+ pr_err("SIMDISK: error closing %s: %d\n",
+ dev->filename, errno);
+ err = -EIO;
+ } else {
+ pr_info("SIMDISK: %s detached from %s\n",
+ dev->gd->disk_name, dev->filename);
+ dev->fd = -1;
+ kfree(dev->filename);
+ dev->filename = NULL;
+ }
+ }
+ spin_unlock(&dev->lock);
+ return err;
+}
+
+static ssize_t proc_read_simdisk(struct file *file, char __user *buf,
+ size_t size, loff_t *ppos)
+{
+ struct simdisk *dev = PDE_DATA(file_inode(file));
+ const char *s = dev->filename;
+ if (s) {
+ ssize_t n = simple_read_from_buffer(buf, size, ppos,
+ s, strlen(s));
+ if (n < 0)
+ return n;
+ buf += n;
+ size -= n;
+ }
+ return simple_read_from_buffer(buf, size, ppos, "\n", 1);
+}
+
+static ssize_t proc_write_simdisk(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ char *tmp = kmalloc(count + 1, GFP_KERNEL);
+ struct simdisk *dev = PDE_DATA(file_inode(file));
+ int err;
+
+ if (tmp == NULL)
+ return -ENOMEM;
+ if (copy_from_user(tmp, buf, count)) {
+ err = -EFAULT;
+ goto out_free;
+ }
+
+ err = simdisk_detach(dev);
+ if (err != 0)
+ goto out_free;
+
+ if (count > 0 && tmp[count - 1] == '\n')
+ tmp[count - 1] = 0;
+ else
+ tmp[count] = 0;
+
+ if (tmp[0])
+ err = simdisk_attach(dev, tmp);
+
+ if (err == 0)
+ err = count;
+out_free:
+ kfree(tmp);
+ return err;
+}
+
+static const struct file_operations fops = {
+ .read = proc_read_simdisk,
+ .write = proc_write_simdisk,
+ .llseek = default_llseek,
+};
+
+static int __init simdisk_setup(struct simdisk *dev, int which,
+ struct proc_dir_entry *procdir)
+{
+ char tmp[2] = { '0' + which, 0 };
+
+ dev->fd = -1;
+ dev->filename = NULL;
+ spin_lock_init(&dev->lock);
+ dev->users = 0;
+
+ dev->queue = blk_alloc_queue(GFP_KERNEL);
+ if (dev->queue == NULL) {
+ pr_err("blk_alloc_queue failed\n");
+ goto out_alloc_queue;
+ }
+
+ blk_queue_make_request(dev->queue, simdisk_make_request);
+ dev->queue->queuedata = dev;
+
+ dev->gd = alloc_disk(SIMDISK_MINORS);
+ if (dev->gd == NULL) {
+ pr_err("alloc_disk failed\n");
+ goto out_alloc_disk;
+ }
+ dev->gd->major = simdisk_major;
+ dev->gd->first_minor = which;
+ dev->gd->fops = &simdisk_ops;
+ dev->gd->queue = dev->queue;
+ dev->gd->private_data = dev;
+ snprintf(dev->gd->disk_name, 32, "simdisk%d", which);
+ set_capacity(dev->gd, 0);
+ add_disk(dev->gd);
+
+ dev->procfile = proc_create_data(tmp, 0644, procdir, &fops, dev);
+ return 0;
+
+out_alloc_disk:
+ blk_cleanup_queue(dev->queue);
+ dev->queue = NULL;
+out_alloc_queue:
+ simc_close(dev->fd);
+ return -EIO;
+}
+
+static int __init simdisk_init(void)
+{
+ int i;
+
+ if (register_blkdev(simdisk_major, "simdisk") < 0) {
+ pr_err("SIMDISK: register_blkdev: %d\n", simdisk_major);
+ return -EIO;
+ }
+ pr_info("SIMDISK: major: %d\n", simdisk_major);
+
+ if (n_files > simdisk_count)
+ simdisk_count = n_files;
+ if (simdisk_count > MAX_SIMDISK_COUNT)
+ simdisk_count = MAX_SIMDISK_COUNT;
+
+ sddev = kmalloc(simdisk_count * sizeof(struct simdisk),
+ GFP_KERNEL);
+ if (sddev == NULL)
+ goto out_unregister;
+
+ simdisk_procdir = proc_mkdir("simdisk", 0);
+ if (simdisk_procdir == NULL)
+ goto out_free_unregister;
+
+ for (i = 0; i < simdisk_count; ++i) {
+ if (simdisk_setup(sddev + i, i, simdisk_procdir) == 0) {
+ if (filename[i] != NULL && filename[i][0] != 0 &&
+ (n_files == 0 || i < n_files))
+ simdisk_attach(sddev + i, filename[i]);
+ }
+ }
+
+ return 0;
+
+out_free_unregister:
+ kfree(sddev);
+out_unregister:
+ unregister_blkdev(simdisk_major, "simdisk");
+ return -ENOMEM;
+}
+module_init(simdisk_init);
+
+static void simdisk_teardown(struct simdisk *dev, int which,
+ struct proc_dir_entry *procdir)
+{
+ char tmp[2] = { '0' + which, 0 };
+
+ simdisk_detach(dev);
+ if (dev->gd)
+ del_gendisk(dev->gd);
+ if (dev->queue)
+ blk_cleanup_queue(dev->queue);
+ remove_proc_entry(tmp, procdir);
+}
+
+static void __exit simdisk_exit(void)
+{
+ int i;
+
+ for (i = 0; i < simdisk_count; ++i)
+ simdisk_teardown(sddev + i, i, simdisk_procdir);
+ remove_proc_entry("simdisk", 0);
+ kfree(sddev);
+ unregister_blkdev(simdisk_major, "simdisk");
+}
+module_exit(simdisk_exit);
+
+MODULE_ALIAS_BLOCKDEV_MAJOR(SIMDISK_MAJOR);
+
+MODULE_LICENSE("GPL");
diff --git a/arch/xtensa/platforms/xt2000/setup.c b/arch/xtensa/platforms/xt2000/setup.c
index 9e83940ac26..b90555cb808 100644
--- a/arch/xtensa/platforms/xt2000/setup.c
+++ b/arch/xtensa/platforms/xt2000/setup.c
@@ -66,13 +66,15 @@ void platform_restart(void)
* jump to the reset vector. */
__asm__ __volatile__ ("movi a2, 15\n\t"
- "wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
+ "wsr a2, icountlevel\n\t"
"movi a2, 0\n\t"
- "wsr a2, " __stringify(ICOUNT) "\n\t"
- "wsr a2, " __stringify(IBREAKENABLE) "\n\t"
- "wsr a2, " __stringify(LCOUNT) "\n\t"
+ "wsr a2, icount\n\t"
+#if XCHAL_NUM_IBREAK > 0
+ "wsr a2, ibreakenable\n\t"
+#endif
+ "wsr a2, lcount\n\t"
"movi a2, 0x1f\n\t"
- "wsr a2, " __stringify(PS) "\n\t"
+ "wsr a2, ps\n\t"
"isync\n\t"
"jx %0\n\t"
:
@@ -90,18 +92,8 @@ void __init platform_setup(char** cmdline)
/* early initialization */
-extern sysmem_info_t __initdata sysmem;
-
-void platform_init(bp_tag_t* first)
+void __init platform_init(bp_tag_t *first)
{
- /* Set default memory block if not provided by the bootloader. */
-
- if (sysmem.nr_banks == 0) {
- sysmem.nr_banks = 1;
- sysmem.bank[0].start = PLATFORM_DEFAULT_MEM_START;
- sysmem.bank[0].end = PLATFORM_DEFAULT_MEM_START
- + PLATFORM_DEFAULT_MEM_SIZE;
- }
}
/* Heartbeat. Let the LED blink. */
diff --git a/arch/xtensa/platforms/xtfpga/Makefile b/arch/xtensa/platforms/xtfpga/Makefile
new file mode 100644
index 00000000000..b9ae206340c
--- /dev/null
+++ b/arch/xtensa/platforms/xtfpga/Makefile
@@ -0,0 +1,9 @@
+# Makefile for the Tensilica xtavnet Emulation Board
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are in the main makefile...
+
+obj-y = setup.o lcd.o
diff --git a/arch/xtensa/platforms/xtfpga/include/platform/hardware.h b/arch/xtensa/platforms/xtfpga/include/platform/hardware.h
new file mode 100644
index 00000000000..aeb316b7ff8
--- /dev/null
+++ b/arch/xtensa/platforms/xtfpga/include/platform/hardware.h
@@ -0,0 +1,65 @@
+/*
+ * arch/xtensa/platform/xtavnet/include/platform/hardware.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Tensilica Inc.
+ */
+
+/*
+ * This file contains the hardware configuration of the XTAVNET boards.
+ */
+
+#ifndef __XTENSA_XTAVNET_HARDWARE_H
+#define __XTENSA_XTAVNET_HARDWARE_H
+
+/* Memory configuration. */
+
+#define PLATFORM_DEFAULT_MEM_START 0x00000000
+#define PLATFORM_DEFAULT_MEM_SIZE 0x04000000
+
+/* Interrupt configuration. */
+
+#define PLATFORM_NR_IRQS 10
+
+/* Default assignment of LX60 devices to external interrupts. */
+
+#ifdef CONFIG_XTENSA_MX
+#define DUART16552_INTNUM XCHAL_EXTINT3_NUM
+#define OETH_IRQ XCHAL_EXTINT4_NUM
+#else
+#define DUART16552_INTNUM XCHAL_EXTINT0_NUM
+#define OETH_IRQ XCHAL_EXTINT1_NUM
+#endif
+
+/*
+ * Device addresses and parameters.
+ */
+
+/* UART */
+#define DUART16552_PADDR (XCHAL_KIO_PADDR + 0x0D050020)
+/* LCD instruction and data addresses. */
+#define LCD_INSTR_ADDR ((char *)IOADDR(0x0D040000))
+#define LCD_DATA_ADDR ((char *)IOADDR(0x0D040004))
+
+/* Misc. */
+#define XTFPGA_FPGAREGS_VADDR IOADDR(0x0D020000)
+/* Clock frequency in Hz (read-only): */
+#define XTFPGA_CLKFRQ_VADDR (XTFPGA_FPGAREGS_VADDR + 0x04)
+/* Setting of 8 DIP switches: */
+#define DIP_SWITCHES_VADDR (XTFPGA_FPGAREGS_VADDR + 0x0C)
+/* Software reset (write 0xdead): */
+#define XTFPGA_SWRST_VADDR (XTFPGA_FPGAREGS_VADDR + 0x10)
+
+/* OpenCores Ethernet controller: */
+ /* regs + RX/TX descriptors */
+#define OETH_REGS_PADDR (XCHAL_KIO_PADDR + 0x0D030000)
+#define OETH_REGS_SIZE 0x1000
+#define OETH_SRAMBUFF_PADDR (XCHAL_KIO_PADDR + 0x0D800000)
+
+ /* 5*rx buffs + 5*tx buffs */
+#define OETH_SRAMBUFF_SIZE (5 * 0x600 + 5 * 0x600)
+
+#endif /* __XTENSA_XTAVNET_HARDWARE_H */
diff --git a/arch/xtensa/platforms/xtfpga/include/platform/lcd.h b/arch/xtensa/platforms/xtfpga/include/platform/lcd.h
new file mode 100644
index 00000000000..0e435645af5
--- /dev/null
+++ b/arch/xtensa/platforms/xtfpga/include/platform/lcd.h
@@ -0,0 +1,20 @@
+/*
+ * arch/xtensa/platform/xtavnet/include/platform/lcd.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001, 2006 Tensilica Inc.
+ */
+
+#ifndef __XTENSA_XTAVNET_LCD_H
+#define __XTENSA_XTAVNET_LCD_H
+
+/* Display string STR at position POS on the LCD. */
+void lcd_disp_at_pos(char *str, unsigned char pos);
+
+/* Shift the contents of the LCD display left or right. */
+void lcd_shiftleft(void);
+void lcd_shiftright(void);
+#endif
diff --git a/arch/xtensa/platforms/xtfpga/include/platform/serial.h b/arch/xtensa/platforms/xtfpga/include/platform/serial.h
new file mode 100644
index 00000000000..14d8f7beebf
--- /dev/null
+++ b/arch/xtensa/platforms/xtfpga/include/platform/serial.h
@@ -0,0 +1,18 @@
+/*
+ * arch/xtensa/platform/xtavnet/include/platform/serial.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001, 2006 Tensilica Inc.
+ */
+
+#ifndef __ASM_XTENSA_XTAVNET_SERIAL_H
+#define __ASM_XTENSA_XTAVNET_SERIAL_H
+
+#include <platform/hardware.h>
+
+#define BASE_BAUD (*(long *)XTFPGA_CLKFRQ_VADDR / 16)
+
+#endif /* __ASM_XTENSA_XTAVNET_SERIAL_H */
diff --git a/arch/xtensa/platforms/xtfpga/lcd.c b/arch/xtensa/platforms/xtfpga/lcd.c
new file mode 100644
index 00000000000..2872301598d
--- /dev/null
+++ b/arch/xtensa/platforms/xtfpga/lcd.c
@@ -0,0 +1,76 @@
+/*
+ * Driver for the LCD display on the Tensilica LX60 Board.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001, 2006 Tensilica Inc.
+ */
+
+/*
+ *
+ * FIXME: this code is from the examples from the LX60 user guide.
+ *
+ * The lcd_pause function does busy waiting, which is probably not
+ * great. Maybe the code could be changed to use kernel timers, or
+ * change the hardware to not need to wait.
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <platform/hardware.h>
+#include <platform/lcd.h>
+#include <linux/delay.h>
+
+#define LCD_PAUSE_ITERATIONS 4000
+#define LCD_CLEAR 0x1
+#define LCD_DISPLAY_ON 0xc
+
+/* 8bit and 2 lines display */
+#define LCD_DISPLAY_MODE8BIT 0x38
+#define LCD_DISPLAY_POS 0x80
+#define LCD_SHIFT_LEFT 0x18
+#define LCD_SHIFT_RIGHT 0x1c
+
+static int __init lcd_init(void)
+{
+ *LCD_INSTR_ADDR = LCD_DISPLAY_MODE8BIT;
+ mdelay(5);
+ *LCD_INSTR_ADDR = LCD_DISPLAY_MODE8BIT;
+ udelay(200);
+ *LCD_INSTR_ADDR = LCD_DISPLAY_MODE8BIT;
+ udelay(50);
+ *LCD_INSTR_ADDR = LCD_DISPLAY_ON;
+ udelay(50);
+ *LCD_INSTR_ADDR = LCD_CLEAR;
+ mdelay(10);
+ lcd_disp_at_pos("XTENSA LINUX", 0);
+ return 0;
+}
+
+void lcd_disp_at_pos(char *str, unsigned char pos)
+{
+ *LCD_INSTR_ADDR = LCD_DISPLAY_POS | pos;
+ udelay(100);
+ while (*str != 0) {
+ *LCD_DATA_ADDR = *str;
+ udelay(200);
+ str++;
+ }
+}
+
+void lcd_shiftleft(void)
+{
+ *LCD_INSTR_ADDR = LCD_SHIFT_LEFT;
+ udelay(50);
+}
+
+void lcd_shiftright(void)
+{
+ *LCD_INSTR_ADDR = LCD_SHIFT_RIGHT;
+ udelay(50);
+}
+
+arch_initcall(lcd_init);
diff --git a/arch/xtensa/platforms/xtfpga/setup.c b/arch/xtensa/platforms/xtfpga/setup.c
new file mode 100644
index 00000000000..57fd08b36f5
--- /dev/null
+++ b/arch/xtensa/platforms/xtfpga/setup.c
@@ -0,0 +1,303 @@
+/*
+ *
+ * arch/xtensa/platform/xtavnet/setup.c
+ *
+ * ...
+ *
+ * Authors: Chris Zankel <chris@zankel.net>
+ * Joe Taylor <joe@tensilica.com>
+ *
+ * Copyright 2001 - 2006 Tensilica Inc.
+ *
+ * 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.
+ *
+ */
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+
+#include <asm/timex.h>
+#include <asm/processor.h>
+#include <asm/platform.h>
+#include <asm/bootparam.h>
+#include <platform/lcd.h>
+#include <platform/hardware.h>
+
+void platform_halt(void)
+{
+ lcd_disp_at_pos(" HALT ", 0);
+ local_irq_disable();
+ while (1)
+ cpu_relax();
+}
+
+void platform_power_off(void)
+{
+ lcd_disp_at_pos("POWEROFF", 0);
+ local_irq_disable();
+ while (1)
+ cpu_relax();
+}
+
+void platform_restart(void)
+{
+ /* Flush and reset the mmu, simulate a processor reset, and
+ * jump to the reset vector. */
+
+
+ __asm__ __volatile__ ("movi a2, 15\n\t"
+ "wsr a2, icountlevel\n\t"
+ "movi a2, 0\n\t"
+ "wsr a2, icount\n\t"
+#if XCHAL_NUM_IBREAK > 0
+ "wsr a2, ibreakenable\n\t"
+#endif
+ "wsr a2, lcount\n\t"
+ "movi a2, 0x1f\n\t"
+ "wsr a2, ps\n\t"
+ "isync\n\t"
+ "jx %0\n\t"
+ :
+ : "a" (XCHAL_RESET_VECTOR_VADDR)
+ : "a2"
+ );
+
+ /* control never gets here */
+}
+
+void __init platform_setup(char **cmdline)
+{
+}
+
+#ifdef CONFIG_OF
+
+static void __init update_clock_frequency(struct device_node *node)
+{
+ struct property *newfreq;
+ u32 freq;
+
+ if (!of_property_read_u32(node, "clock-frequency", &freq) && freq != 0)
+ return;
+
+ newfreq = kzalloc(sizeof(*newfreq) + sizeof(u32), GFP_KERNEL);
+ if (!newfreq)
+ return;
+ newfreq->value = newfreq + 1;
+ newfreq->length = sizeof(freq);
+ newfreq->name = kstrdup("clock-frequency", GFP_KERNEL);
+ if (!newfreq->name) {
+ kfree(newfreq);
+ return;
+ }
+
+ *(u32 *)newfreq->value = cpu_to_be32(*(u32 *)XTFPGA_CLKFRQ_VADDR);
+ of_update_property(node, newfreq);
+}
+
+#define MAC_LEN 6
+static void __init update_local_mac(struct device_node *node)
+{
+ struct property *newmac;
+ const u8* macaddr;
+ int prop_len;
+
+ macaddr = of_get_property(node, "local-mac-address", &prop_len);
+ if (macaddr == NULL || prop_len != MAC_LEN)
+ return;
+
+ newmac = kzalloc(sizeof(*newmac) + MAC_LEN, GFP_KERNEL);
+ if (newmac == NULL)
+ return;
+
+ newmac->value = newmac + 1;
+ newmac->length = MAC_LEN;
+ newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
+ if (newmac->name == NULL) {
+ kfree(newmac);
+ return;
+ }
+
+ memcpy(newmac->value, macaddr, MAC_LEN);
+ ((u8*)newmac->value)[5] = (*(u32*)DIP_SWITCHES_VADDR) & 0x3f;
+ of_update_property(node, newmac);
+}
+
+static int __init machine_setup(void)
+{
+ struct device_node *clock;
+ struct device_node *eth = NULL;
+
+ for_each_node_by_name(clock, "main-oscillator")
+ update_clock_frequency(clock);
+
+ if ((eth = of_find_compatible_node(eth, NULL, "opencores,ethoc")))
+ update_local_mac(eth);
+ return 0;
+}
+arch_initcall(machine_setup);
+
+#endif
+
+/* early initialization */
+
+void __init platform_init(bp_tag_t *first)
+{
+}
+
+/* Heartbeat. */
+
+void platform_heartbeat(void)
+{
+}
+
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
+
+void __init platform_calibrate_ccount(void)
+{
+ long clk_freq = 0;
+#ifdef CONFIG_OF
+ struct device_node *cpu =
+ of_find_compatible_node(NULL, NULL, "cdns,xtensa-cpu");
+ if (cpu) {
+ u32 freq;
+ update_clock_frequency(cpu);
+ if (!of_property_read_u32(cpu, "clock-frequency", &freq))
+ clk_freq = freq;
+ }
+#endif
+ if (!clk_freq)
+ clk_freq = *(long *)XTFPGA_CLKFRQ_VADDR;
+
+ ccount_freq = clk_freq;
+}
+
+#endif
+
+#ifndef CONFIG_OF
+
+#include <linux/serial_8250.h>
+#include <linux/if.h>
+#include <net/ethoc.h>
+
+/*----------------------------------------------------------------------------
+ * Ethernet -- OpenCores Ethernet MAC (ethoc driver)
+ */
+
+static struct resource ethoc_res[] = {
+ [0] = { /* register space */
+ .start = OETH_REGS_PADDR,
+ .end = OETH_REGS_PADDR + OETH_REGS_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = { /* buffer space */
+ .start = OETH_SRAMBUFF_PADDR,
+ .end = OETH_SRAMBUFF_PADDR + OETH_SRAMBUFF_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [2] = { /* IRQ number */
+ .start = OETH_IRQ,
+ .end = OETH_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct ethoc_platform_data ethoc_pdata = {
+ /*
+ * The MAC address for these boards is 00:50:c2:13:6f:xx.
+ * The last byte (here as zero) is read from the DIP switches on the
+ * board.
+ */
+ .hwaddr = { 0x00, 0x50, 0xc2, 0x13, 0x6f, 0 },
+ .phy_id = -1,
+};
+
+static struct platform_device ethoc_device = {
+ .name = "ethoc",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(ethoc_res),
+ .resource = ethoc_res,
+ .dev = {
+ .platform_data = &ethoc_pdata,
+ },
+};
+
+/*----------------------------------------------------------------------------
+ * UART
+ */
+
+static struct resource serial_resource = {
+ .start = DUART16552_PADDR,
+ .end = DUART16552_PADDR + 0x1f,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct plat_serial8250_port serial_platform_data[] = {
+ [0] = {
+ .mapbase = DUART16552_PADDR,
+ .irq = DUART16552_INTNUM,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
+ UPF_IOREMAP,
+ .iotype = UPIO_MEM32,
+ .regshift = 2,
+ .uartclk = 0, /* set in xtavnet_init() */
+ },
+ { },
+};
+
+static struct platform_device xtavnet_uart = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = serial_platform_data,
+ },
+ .num_resources = 1,
+ .resource = &serial_resource,
+};
+
+/* platform devices */
+static struct platform_device *platform_devices[] __initdata = {
+ &ethoc_device,
+ &xtavnet_uart,
+};
+
+
+static int __init xtavnet_init(void)
+{
+ /* Ethernet MAC address. */
+ ethoc_pdata.hwaddr[5] = *(u32 *)DIP_SWITCHES_VADDR;
+
+ /* Clock rate varies among FPGA bitstreams; board specific FPGA register
+ * reports the actual clock rate.
+ */
+ serial_platform_data[0].uartclk = *(long *)XTFPGA_CLKFRQ_VADDR;
+
+
+ /* register platform devices */
+ platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+ /* ETHOC driver is a bit quiet; at least display Ethernet MAC, so user
+ * knows whether they set it correctly on the DIP switches.
+ */
+ pr_info("XTFPGA: Ethernet MAC %pM\n", ethoc_pdata.hwaddr);
+ ethoc_pdata.eth_clkfreq = *(long *)XTFPGA_CLKFRQ_VADDR;
+
+ return 0;
+}
+
+/*
+ * Register to be done during do_initcalls().
+ */
+arch_initcall(xtavnet_init);
+
+#endif /* CONFIG_OF */
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