[U-Boot] [PATCH u-boot git] dm9000 EEPROM reading bugfix
David Brownell
david-b at pacbell.net
Mon Apr 13 00:35:39 CEST 2009
From: David Brownell <dbrownell at users.sourceforge.net>
Make the U-Boot dm9000 driver read addresses from EEPROM just
like Linux does ... read six bytes, instead of reading twelve
bytes then discarding every one.
Using the right Ethernet address is a big win.
Signed-off-by: David Brownell <dbrownell at users.sourceforge.net>
---
drivers/net/dm9000x.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/net/dm9000x.c
+++ b/drivers/net/dm9000x.c
@@ -113,7 +113,7 @@ void eth_halt(void);
static int dm9000_probe(void);
static u16 phy_read(int);
static void phy_write(int, u16);
-u16 read_srom_word(int);
+static void read_srom_word(int, u8 *);
static u8 DM9000_ior(int);
static void DM9000_iow(int reg, u8 value);
@@ -348,8 +348,8 @@ eth_init(bd_t * bd)
/* Set Node address */
if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
#if !defined(CONFIG_AT91SAM9261EK)
- for (i = 0; i < 6; i++)
- enetaddr[i] = read_srom_word(i);
+ for (i = 0; i < 3; i++)
+ read_srom_word(i, enetaddr + 2 * i);
eth_setenv_enetaddr("ethaddr", enetaddr);
#endif
}
@@ -541,14 +541,14 @@ eth_rx(void)
/*
Read a word data from SROM
*/
-u16
-read_srom_word(int offset)
+static void read_srom_word(int offset, u8 *to)
{
DM9000_iow(DM9000_EPAR, offset);
DM9000_iow(DM9000_EPCR, 0x4);
udelay(8000);
DM9000_iow(DM9000_EPCR, 0x0);
- return (DM9000_ior(DM9000_EPDRL) + (DM9000_ior(DM9000_EPDRH) << 8));
+ to[0] = DM9000_ior(DM9000_EPDRL);
+ to[1] = DM9000_ior(DM9000_EPDRH);
}
void
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