On 8/29/2017 7:37 AM, Eric Nelson wrote:
Hi Troy,
On 08/28/2017 09:42 AM, Troy Kisky wrote:
On 8/27/2017 3:04 PM, Eric Nelson wrote:
This adds support for USB boot mode on the i.MX7D SoC, which is most useful when doing U-Boot development on this chip.
i.e., it enables you to enter the ROM boot loader's serial download protocol using the command:
=> bmode usb
Signed-off-by: Eric Nelson eric@nelint.com
arch/arm/mach-imx/mx7/soc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-imx/mx7/soc.c b/arch/arm/mach-imx/mx7/soc.c index 87bf105..63ee59f 100644 --- a/arch/arm/mach-imx/mx7/soc.c +++ b/arch/arm/mach-imx/mx7/soc.c @@ -372,6 +372,8 @@ void set_wdog_reset(struct wdog_regs *wdog) * to SBMR1, which will determine the boot device. */ const struct boot_mode soc_boot_modes[] = {
You might want to add
+ {"normal", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
while you're at it, to undo with "bmode normal"
Normal, meaning "don't override"?
Why would you want to do this?
Please advise,
Hi Eric!
If you do "bmode usb" and then use "imx_usb" to load a new u-boot. You may want to do "bmode normal", so that a watchdog reset from the linux kernel or from u-boot will work as expected, instead of starting the ROM USB downloader again.
BR
Troy