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p2771-0000: Pass Ethernet MAC to the kernel

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Pass the ethernet MAC address to the kernel upon boot. This passes both
the local-mac-address property (as passed to U-Boot from cboot) and the
currently set MAC address via the mac-address property. The latter will
only be set if it is different from the address that was already passed
via the local-mac-address property.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Thierry Reding
2019-04-15 11:32:34 +02:00
committed by Tom Warren
parent a930a72742
commit 8317189737
3 changed files with 45 additions and 0 deletions
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43
board/nvidia/p2771-0000/p2771-0000.c
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@@ -4,7 +4,10 @@
*/
#include <common.h>
#include <environment.h>
#include <i2c.h>
#include <linux/libfdt.h>
#include <asm/arch-tegra/cboot.h>
#include "../p2571/max77620_init.h"
void pin_mux_mmc(void)
@@ -52,3 +55,43 @@ int tegra_pcie_board_init(void)
return 0;
}
#endif
int ft_board_setup(void *fdt, bd_t *bd)
{
const void *cboot_fdt = (const void *)cboot_boot_x0;
uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN];
const char *path;
int offset, err;
err = cboot_get_ethaddr(cboot_fdt, local_mac);
if (err < 0)
memset(local_mac, 0, ETH_ALEN);
path = fdt_get_alias(fdt, "ethernet");
if (!path)
return 0;
debug("ethernet alias found: %s\n", path);
offset = fdt_path_offset(fdt, path);
if (offset < 0)
return 0;
if (is_valid_ethaddr(local_mac)) {
err = fdt_setprop(fdt, offset, "local-mac-address", local_mac,
ETH_ALEN);
if (!err)
debug("Local MAC address set: %pM\n", local_mac);
}
if (eth_env_get_enetaddr("ethaddr", mac)) {
if (memcmp(local_mac, mac, ETH_ALEN) != 0) {
err = fdt_setprop(fdt, offset, "mac-address", mac,
ETH_ALEN);
if (!err)
debug("MAC address set: %pM\n", mac);
}
}
return 0;
}