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xtensa: set the correct ethernet address for xtfpga

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The last byte of the mac address is determined by a DIP switch, so
update the OF property with that address.

Signed-off-by: Chris Zankel <chris@zankel.net>
This commit is contained in:
Chris Zankel 2012-11-28 16:52:09 -08:00
parent c4c4594b00
commit 33c760fbb7
1 changed files with 34 additions and 2 deletions
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36
arch/xtensa/platforms/xtfpga/setup.c
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@ -32,6 +32,7 @@
#include <asm/platform.h>
#include <asm/bootparam.h>
#include <platform/lcd.h>
#include <platform/hardware.h>
void platform_halt(void)
{
@ -84,8 +85,7 @@ 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)
if (!of_property_read_u32(node, "clock-frequency", &freq) && freq != 0)
return;
newfreq = kzalloc(sizeof(*newfreq) + sizeof(u32), GFP_KERNEL);
@ -103,12 +103,44 @@ static void __init update_clock_frequency(struct device_node *node)
prom_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;
prom_update_property(node, newmac);
}
static int __init machine_setup(void)
{
struct device_node *serial;
struct device_node *eth = NULL;
for_each_compatible_node(serial, NULL, "ns16550a")
update_clock_frequency(serial);
if ((eth = of_find_compatible_node(eth, NULL, "opencores,ethoc")))
update_local_mac(eth);
return 0;
}
arch_initcall(machine_setup);