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Blackfin: bf537-stamp: rewrite MAC-in-flash handling

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Use the common net eth functions to setup the env/global data with the MAC
address, and properly handle the case where CONFIG_SYS_NO_FLASH is defined.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2008-10-11 22:44:14 -04:00
parent 88f9faffb3
commit 751e54c3b7
2 changed files with 83 additions and 22 deletions
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77
board/bf537-stamp/bf537-stamp.c
View File

@ -1,7 +1,7 @@
/*
* U-boot - BF537.c
* U-boot - main board file
*
* Copyright (c) 2005-2007 Analog Devices Inc.
* Copyright (c) 2005-2008 Analog Devices Inc.
*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
@ -29,7 +29,7 @@
#include <config.h>
#include <command.h>
#include <asm/blackfin.h>
#include <asm/io.h>
#include <asm/net.h>
#include <net.h>
#include <asm/mach-common/bits/bootrom.h>
#include <netdev.h>
@ -89,22 +89,63 @@ phys_size_t initdram(int board_type)
return gd->bd->bi_memsize;
}
void board_reset(void)
{
/* workaround for weak pull ups on ssel */
if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_SPI_MASTER) {
bfin_write_PORTF_FER(bfin_read_PORTF_FER() & ~PF10);
bfin_write_PORTFIO_SET(PF10);
udelay(1);
}
}
#ifdef CONFIG_BFIN_MAC
static void board_init_enetaddr(uchar *mac_addr)
{
#ifdef CONFIG_SYS_NO_FLASH
# define USE_MAC_IN_FLASH 0
#else
# define USE_MAC_IN_FLASH 1
#endif
bool valid_mac = false;
if (USE_MAC_IN_FLASH) {
/* we cram the MAC in the last flash sector */
uchar *board_mac_addr = (uchar *)0x203F0000;
if (is_valid_ether_addr(board_mac_addr)) {
memcpy(mac_addr, board_mac_addr, 6);
valid_mac = true;
}
}
if (!valid_mac) {
puts("Warning: Generating 'random' MAC address\n");
bfin_gen_rand_mac(mac_addr);
}
eth_setenv_enetaddr("ethaddr", mac_addr);
}
int board_eth_init(bd_t *bis)
{
return bfin_EMAC_initialize(bis);
}
#endif
#if defined(CONFIG_MISC_INIT_R)
/* miscellaneous platform dependent initialisations */
int misc_init_r(void)
{
#if defined(CONFIG_CMD_NET)
char nid[32];
unsigned char *pMACaddr = (unsigned char *)0x203F0000;
#ifdef CONFIG_BFIN_MAC
uchar enetaddr[6];
if (!eth_getenv_enetaddr("ethaddr", enetaddr))
board_init_enetaddr(enetaddr);
#endif
/* The 0xFF check here is to make sure we don't use the address
* in flash if it's simply been erased (aka all 0xFF values) */
if (getenv("ethaddr") == NULL && is_valid_ether_addr(pMACaddr)) {
sprintf(nid, "%02x:%02x:%02x:%02x:%02x:%02x",
pMACaddr[0], pMACaddr[1],
pMACaddr[2], pMACaddr[3], pMACaddr[4], pMACaddr[5]);
setenv("ethaddr", nid);
}
#ifndef CONFIG_SYS_NO_FLASH
/* we use the last sector for the MAC address / POST LDR */
extern flash_info_t flash_info[];
flash_protect(FLAG_PROTECT_SET, 0x203F0000, 0x203FFFFF, &flash_info[0]);
#endif
#if defined(CONFIG_BFIN_IDE)
@ -127,14 +168,6 @@ int misc_init_r(void)
}
#endif /* CONFIG_MISC_INIT_R */
#if defined(CONFIG_BFIN_MAC)
int board_eth_init(bd_t *bis)
{
return bfin_EMAC_initialize(bis);
}
#endif
#ifdef CONFIG_POST
/* Using sw10-PF5 as the hotkey */
int post_hotkeys_pressed(void)

28
include/asm-blackfin/net.h Normal file
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@ -0,0 +1,28 @@
/*
* net.h - misc Blackfin network helpers
*
* Copyright (c) 2008-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_BFIN_RAND_MAC__
#define __ASM_BFIN_RAND_MAC__
/* If the board does not have a real MAC assigned to it, then generate a
* locally administrated pseudo-random one based on CYCLES and compile date.
*/
static inline void bfin_gen_rand_mac(uchar *mac_addr)
{
/* make something up */
const char s[] = __DATE__;
size_t i;
u32 cycles;
for (i = 0; i < 6; ++i) {
asm("%0 = CYCLES;" : "=r" (cycles));
mac_addr[i] = cycles ^ s[i];
}
mac_addr[0] = (mac_addr[0] | 0x02) & ~0x01; /* make it local unicast */
}
#endif