diff options
| author | Tom Rini <trini@ti.com> | 2012-09-13 08:55:12 -0700 |
|---|---|---|
| committer | Vishveshwar Bhat <vishveshwar.bhat@ti.com> | 2012-10-23 12:18:59 +0530 |
| commit | c35de2457b69c78f9b7b3399ed790552465fc04d (patch) | |
| tree | 51d04820643aae0b66ea43bf8241e0a9258ca872 | |
| parent | 83e942e6af17b6127fb701df8f90f5798c022304 (diff) | |
| download | u-boot-beaglebone-c35de2457b69c78f9b7b3399ed790552465fc04d.tar.gz | |
am335x USB SPL: Add documentation, new build targets
Signed-off-by: Tom Rini <trini@ti.com>
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/spl.c | 2 | ||||
| -rw-r--r-- | boards.cfg | 2 | ||||
| -rw-r--r-- | doc/am335x.net-spl/USB-README | 39 |
3 files changed, 43 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c index 424f6ca62..8fce916f0 100644 --- a/arch/arm/cpu/armv7/omap-common/spl.c +++ b/arch/arm/cpu/armv7/omap-common/spl.c @@ -121,9 +121,11 @@ void board_init_r(gd_t *id, ulong dummy) boot_device = omap_boot_device(); debug("boot device - %d\n", boot_device); +#ifdef CONFIG_UART_THEN_USB_SPL /* Hack: load SPL via UART, then use USB */ if (boot_device == BOOT_DEVICE_UART) boot_device = BOOT_DEVICE_USB; +#endif switch (boot_device) { #ifdef CONFIG_SPL_MMC_SUPPORT diff --git a/boards.cfg b/boards.cfg index f46dcfdaa..55af69fc9 100644 --- a/boards.cfg +++ b/boards.cfg @@ -170,6 +170,8 @@ igep0030 arm armv7 igep0030 isee am335x_evm arm armv7 am335x ti ti81xx am335x_evm_restore_flash arm armv7 am335x ti ti81xx am335x_evm:RESTORE_FLASH am335x_evm_spiboot arm armv7 am335x ti ti81xx am335x_evm:SPI_BOOT +am335x_evm_uart_usbspl arm armv7 am335x ti ti81xx am335x_evm:UART_THEN_USB_SPL +am335x_evm_restore_flash_usbspl arm armv7 am335x ti ti81xx am335x_evm:RESTORE_FLASH,UART_THEN_USB_SPL am3517_crane arm armv7 am3517crane ti omap3 am3517_evm arm armv7 am3517evm logicpd omap3 am3517_evm_norflash arm armv7 am3517evm logicpd omap3 am3517_evm:SYS_HAS_NORFLASH diff --git a/doc/am335x.net-spl/USB-README b/doc/am335x.net-spl/USB-README new file mode 100644 index 000000000..3092197a5 --- /dev/null +++ b/doc/am335x.net-spl/USB-README @@ -0,0 +1,39 @@ +USING UART AND USB +================== + +Currently in order to use USB SPL on this platform you must load SPL itself +via UART. A special build of the board will cause SPL to perform the next +step via USB RNDIS ethernet rather than via UART. + +To make this easier, the following build targets have been added: +am335x_evm_uart_usbspl +am335x_evm_restore_flash_usbspl + +HOST REQUIREMENTS +================= + +In addition to the regular requirements documented in +doc/am335x.net-spl/README to serve files and answer dhcp requests the host +needs to have rndis support (CONFIG_USB_NET_RNDIS_HOST) enabled in the +kernel (built-in or module). With the default settings, a sample +dhcpd.conf entry would look like: + +host am335x_usb_rndis_gadget { + hardware ethernet aa:bb:cc:00:11:33; + + if substring (option vendor-class-identifier, 0, 17) = "AM335x U-Boot SPL" { + filename "u-boot.img"; + } else { + filename "uImage-am335x"; + } + fixed-address 192.168.1.2; +} + +In order for this to work, assuming a Linux distribution that obeys +/etc/network/interfaces, the following entry is needed: + +allow-hotplug usb0 +iface usb0 inet static + address 192.168.1.1 + netmask 255.255.255.0 + post-up service isc-dhcp-server restart |