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authorDaniel Mack <daniel@caiaq.de>2009-04-02 10:33:14 +0400
committerEric Miao <eric.miao@marvell.com>2009-04-04 06:26:34 +0400
commit22a0200b18b8526043d3014efdaf839b01767111 (patch)
tree5438a411a8382ae10a6ed99577ad65d54bed660e /arch/arm/mach-pxa/colibri-pxa3xx.c
parent50f6bb0ab75794ad02cb5db503cc8c99465ceaf4 (diff)
downloadlinux-22a0200b18b8526043d3014efdaf839b01767111.tar.xz
[ARM] pxa/colibri: provide MAC address from ATAG_SERIAL
In 67fca028f1535e510689d2e444b0289e264e05c1, the ax88796 ethernet driver learned a way to let the platform data hand in the MAC address. Use it here as the original Colibri bootloader passes in a MAC address via ATAG_SERIAL. Reported-by: Matthias Meier <matthias.j.meier@gmx.net> Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Eric Miao <eric.miao@marvell.com>
Diffstat (limited to 'arch/arm/mach-pxa/colibri-pxa3xx.c')
-rw-r--r--arch/arm/mach-pxa/colibri-pxa3xx.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/colibri-pxa3xx.c b/arch/arm/mach-pxa/colibri-pxa3xx.c
index 12d0afc54aa5..ea34e34f8cd8 100644
--- a/arch/arm/mach-pxa/colibri-pxa3xx.c
+++ b/arch/arm/mach-pxa/colibri-pxa3xx.c
@@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
+#include <linux/etherdevice.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
@@ -28,6 +29,40 @@
#include "generic.h"
#include "devices.h"
+#if defined(CONFIG_AX88796)
+#define ETHER_ADDR_LEN 6
+static u8 ether_mac_addr[ETHER_ADDR_LEN];
+
+void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
+{
+ int i;
+ u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
+
+ /*
+ * If the bootloader passed in a serial boot tag, which contains a
+ * valid ethernet MAC, pass it to the interface. Toradex ships the
+ * modules with their own bootloader which provides a valid MAC
+ * this way.
+ */
+
+ for (i = 0; i < ETHER_ADDR_LEN; i++) {
+ ether_mac_addr[i] = serial & 0xff;
+ serial >>= 8;
+ }
+
+ if (is_valid_ether_addr(ether_mac_addr)) {
+ plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
+ plat_data->mac_addr = ether_mac_addr;
+ printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
+ __func__);
+ } else {
+ plat_data->flags |= AXFLG_MAC_FROMDEV;
+ printk(KERN_INFO "%s(): no valid serial boot tag found, "
+ "taking MAC from device\n", __func__);
+ }
+}
+#endif
+
#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static int mmc_detect_pin;