[PATCH 0/3] Animeo IP: macb support improvement

[PATCH 0/3] Animeo IP: macb support improvement

[Jean-Christophe PLAGNIOL-VILLARD]

Hi,

	The following patch series add
	 - fix reset
	 - retreive previously valid public macb's mac
	 - set local mac to macb (if none) and asix with "smf" as OUI

The following changes since commit 820e3d7d20da7d0258349ae6a152b13a3e0d0817:

  animeo_ip: set uSD port devname to microsd (2013-09-20 13:31:06 +0800)

are available in the git repository at:

  git://git.jcrosoft.org/barebox.git delivery/animeo_ip_eth

for you to fetch changes up to 3233e9497b5a1a911b3556549d99106b66757a7c:

  animeo_ip: retrieve the mac from the macb and set private mac to asix (2013-09-20 13:31:14 +0800)

----------------------------------------------------------------
Jean-Christophe PLAGNIOL-VILLARD (3):
      introduce helper to generate mac address with OUI
      animeo_ip: ensure the phy is reset correctly
      animeo_ip: retrieve the mac from the macb and set private mac to asix

 arch/arm/boards/animeo_ip/init.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 include/local_mac_address.h      | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 110 insertions(+), 1 deletion(-)
 create mode 100644 include/local_mac_address.h

Best Regards,
J.

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[PATCH 1/3] introduce helper to generate mac address with OUI

[Jean-Christophe PLAGNIOL-VILLARD]

use random mac address with fixed OUI provided

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 include/local_mac_address.h | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 include/local_mac_address.h

diff --git a/include/local_mac_address.h b/include/local_mac_address.h
new file mode 100644
index 0000000..3920334
--- /dev/null
+++ b/include/local_mac_address.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
+ *
+ * Under GPLv2 only
+ */
+
+#ifndef __LOCAL_MAC_ADDRESS_H__
+#define __LOCAL_MAC_ADDRESS_H__
+
+/**
+ * local_mac_address_register - use random number with fix
+ * OUI provided device to provide an Ethernet address
+ * @ethid: ethernet device id
+ * @oui: Ethernet OUI (3 bytes)
+ *
+ * Generate a local Ethernet address (MAC) that is not multicast using a 1-wire id.
+ */
+static inline int local_mac_address_register(int ethid, char * oui)
+{
+	char addr[6];
+	int nb_oui = 3;
+	int i;
+
+	if (!oui)
+		return -EINVAL;
+
+	random_ether_addr(addr);
+
+	for (i = 0; i < nb_oui; i++)
+		addr[i] = oui[i];
+
+	addr[0] &= 0xfe;	/* clear multicast bit */
+	addr[0] |= 0x02;	/* set local assignment bit (IEEE802) */
+
+	eth_register_ethaddr(ethid, addr);
+
+	return 0;
+}
+
+#endif /* __LOCAL_MAC_ADDRESS_H__ */
-- 
1.8.4.rc1


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[PATCH 2/3] animeo_ip: ensure the phy is reset correctly

[Jean-Christophe PLAGNIOL-VILLARD]

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 arch/arm/boards/animeo_ip/init.c | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boards/animeo_ip/init.c b/arch/arm/boards/animeo_ip/init.c
index e99acd0..c98493f 100644
--- a/arch/arm/boards/animeo_ip/init.c
+++ b/arch/arm/boards/animeo_ip/init.c
@@ -19,6 +19,7 @@
 #include <nand.h>
 #include <sizes.h>
 #include <linux/mtd/nand.h>
+#include <linux/clk.h>
 #include <mach/board.h>
 #include <mach/at91sam9_smc.h>
 #include <gpio.h>
@@ -226,12 +227,45 @@ static void animeo_ip_power_control(void)
 	animeo_export_gpio_out(AT91_PIN_PC4, "power_save");
 }
 
+static void animeo_ip_phy_reset(void)
+{
+	unsigned long rstc;
+	int i;
+	struct clk *clk = clk_get(NULL, "macb_clk");
+
+	clk_enable(clk);
+
+	for (i = AT91_PIN_PA12; i <= AT91_PIN_PA29; i++)
+		at91_set_gpio_input(i, 0);
+
+	rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL;
+
+	/* Need to reset PHY -> 500ms reset */
+	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
+				     (AT91_RSTC_ERSTL & (0x0d << 8)) |
+				     AT91_RSTC_URSTEN);
+
+	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
+
+	/* Wait for end hardware reset */
+	while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL))
+		;
+
+	/* Restore NRST value */
+	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY | (rstc) | AT91_RSTC_URSTEN);
+}
+
+static void animeo_ip_add_device_eth(void)
+{
+	animeo_ip_phy_reset();
+	at91_add_device_eth(0, &macb_pdata);
+}
+
 static int animeo_ip_devices_init(void)
 {
 	animeo_ip_detect_version();
 	animeo_ip_power_control();
 	animeo_ip_add_device_nand();
-	at91_add_device_eth(0, &macb_pdata);
 	animeo_ip_add_device_usb();
 	animeo_ip_add_device_mci();
 	animeo_ip_add_device_buttons();
@@ -251,6 +285,8 @@ static int animeo_ip_devices_init(void)
 	devfs_add_partition("nand0", SZ_256K + SZ_32K, SZ_32K, DEVFS_PARTITION_FIXED, "env_raw");
 	dev_add_bb_dev("env_raw", "env0");
 
+	animeo_ip_add_device_eth();
+
 	return 0;
 }
 
-- 
1.8.4.rc1


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[PATCH 3/3] animeo_ip: retrieve the mac from the macb and set private mac to asix

[Jean-Christophe PLAGNIOL-VILLARD]

if the macb's mac is not a valid public mac set a private with "smf" as OUI
as the mac address might be set by the previous bootloader

set a private with "smf" as OUI for asix

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 arch/arm/boards/animeo_ip/init.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm/boards/animeo_ip/init.c b/arch/arm/boards/animeo_ip/init.c
index c98493f..b6cd996 100644
--- a/arch/arm/boards/animeo_ip/init.c
+++ b/arch/arm/boards/animeo_ip/init.c
@@ -27,6 +27,7 @@
 #include <mach/io.h>
 #include <mach/at91_pmc.h>
 #include <mach/at91_rstc.h>
+#include <local_mac_address.h>
 
 static bool animeo_ip_is_buco;
 static bool animeo_ip_is_io;
@@ -255,8 +256,40 @@ static void animeo_ip_phy_reset(void)
 	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY | (rstc) | AT91_RSTC_URSTEN);
 }
 
+#define MACB_SA1B	0x0098
+#define MACB_SA1T	0x009c
+
+static int animeo_ip_get_macb_ethaddr(u8 *addr)
+{
+	u32 top, bottom;
+	void __iomem *base = IOMEM(AT91SAM9260_BASE_EMAC);
+
+	bottom = readl(base + MACB_SA1B);
+	top = readl(base + MACB_SA1T);
+	addr[0] = bottom & 0xff;
+	addr[1] = (bottom >> 8) & 0xff;
+	addr[2] = (bottom >> 16) & 0xff;
+	addr[3] = (bottom >> 24) & 0xff;
+	addr[4] = top & 0xff;
+	addr[5] = (top >> 8) & 0xff;
+
+	/* valid and not private */
+	if (is_valid_ether_addr(addr) && !(addr[0] & 0x02))
+		return 0;
+
+	return -EINVAL;
+}
+
 static void animeo_ip_add_device_eth(void)
 {
+	if (!animeo_ip_get_macb_ethaddr(enetaddr))
+		eth_register_ethaddr(0, enetaddr);
+	else
+		local_mac_address_register(0, "smf");
+
+	/* for usb asix */
+	local_mac_address_register(1, "smf");
+
 	animeo_ip_phy_reset();
 	at91_add_device_eth(0, &macb_pdata);
 }
-- 
1.8.4.rc1


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