[PATCH v2] rockchip: include: asm: fix entering download mode rk3066

[Johan Jonker]

Hi,

It looks as if all the TABs are gone.

Will resend.

Johan

On 9/19/23 16:57, Johan Jonker wrote:
> Keep track of the re-entries with help of the lr register.
> This binary can be re-used and called from various BROM functions.
> Only when it's called from the part that handles SPI, NAND or EMMC
> hardware it needs to early return to BROM ones.
> In download mode when it handles data on USB OTG and UART0
> this section must be skipped.
>
> Unlike newer Rockchip SoC models the rk3066 BROM code does not have built-in
> support to enter download mode on return to BROM. This binary must check
> the boot mode register for the BOOT_BROM_DOWNLOAD flag and reset if it's set.
> It then returns to BROM to the end of the function that reads boot blocks.
> From there the BROM code goes into a download mode and waits for data
> on USB OTG and UART0.
>
> Signed-off-by: Johan Jonker <jbx6244 at gmail.com>
> ---