am335x_evm: enable support for booting via USB
This adds necessary config options and a new build target,
am335x_evm_usbspl, to enable usb booting and fixes board_eth_init()
function to take into account that we may have USB ether support in SPL
now. This uses the same MAC for both cpsw and USB, in order to match
ROM behavior.
The usbspl build target does not contain UART SPL, CPSW SPL or extra
environment settings, so that we may fit within our binary size
constraint.
Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index 48e6896..441758f 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -389,7 +389,8 @@
}
#endif
-#ifdef CONFIG_DRIVER_TI_CPSW
+#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
+ (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
static void cpsw_control(int enabled)
{
/* VTP can be added here */
@@ -434,26 +435,26 @@
int board_eth_init(bd_t *bis)
{
int rv, n = 0;
-#ifdef CONFIG_DRIVER_TI_CPSW
uint8_t mac_addr[6];
uint32_t mac_hi, mac_lo;
- if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
- printf("<ethaddr> not set. Reading from E-fuse\n");
- /* try reading mac address from efuse */
- mac_lo = readl(&cdev->macid0l);
- mac_hi = readl(&cdev->macid0h);
- mac_addr[0] = mac_hi & 0xFF;
- mac_addr[1] = (mac_hi & 0xFF00) >> 8;
- mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
- mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
- mac_addr[4] = mac_lo & 0xFF;
- mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+ /* try reading mac address from efuse */
+ mac_lo = readl(&cdev->macid0l);
+ mac_hi = readl(&cdev->macid0h);
+ mac_addr[0] = mac_hi & 0xFF;
+ mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+ mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+ mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+ mac_addr[4] = mac_lo & 0xFF;
+ mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
+ (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
+ if (!getenv("ethaddr")) {
+ printf("<ethaddr> not set. Validating first E-fuse MAC\n");
if (is_valid_ether_addr(mac_addr))
eth_setenv_enetaddr("ethaddr", mac_addr);
- else
- goto try_usbether;
}
if (board_is_bone() || board_is_bone_lt() || board_is_idk()) {
@@ -494,8 +495,11 @@
AR8051_RGMII_TX_CLK_DLY);
}
#endif
-try_usbether:
-#if defined(CONFIG_USB_ETHER) && !defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_USB_ETHER) && \
+ (!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USBETH_SUPPORT))
+ if (is_valid_ether_addr(mac_addr))
+ eth_setenv_enetaddr("usbnet_devaddr", mac_addr);
+
rv = usb_eth_initialize(bis);
if (rv < 0)
printf("Error %d registering USB_ETHER\n", rv);