diff options
| author | Jonas Karlman <[email protected]> | 2025-08-02 22:07:23 +0000 |
|---|---|---|
| committer | Kever Yang <[email protected]> | 2025-12-14 00:02:10 +0800 |
| commit | e22335a221f88e7f61171e752ca195663f86d81f (patch) | |
| tree | ff505205e2de2ce2374ccced1d49444dc3d496e7 /boot | |
| parent | b57363a2b9b6bbc6a4fa63d93681485b812ccc51 (diff) | |
rockchip: Add support for RAM boot from maskrom mode
The BootROM in Rockchip SoCs will enter maskrom mode when boot firmware
cannot be found in nand/spi/mmc storage.
In maskrom mode the USB OTG port can accept one of two custom commands.
Initially a 0x471 command to load TPL into SRAM. After TPL has been
executed and it has returned back-to-BROM, a 0x472 command to load SPL
into start of DRAM.
Add two binman images that can be used to RAM boot from maskrom mode:
- u-boot-rockchip-usb471.bin that contains TPL to init DRAM.
- u-boot-rockchip-usb472.bin that contains SPL and the normal FIT
payload with i.e. U-Boot proper, TF-A and FDT.
A config fragment rockchip-ramboot.config can be used to enable building
of these two binman images, e.g.:
make generic-rk3588_defconfig rockchip-ramboot.config
These binman images can be used with the proprietary rkbin boot_merger
tool to create a special loader image that can be used with tools such
as rkdeveloptool or rockusb tools to RAM boot from maskrom, e.g.:
Create loader image:
$ ../rkbin/tools/boot_merger ./RK3588MINIALL.ini
Boot from maskrom:
$ rkdeveloptool db u-boot-rockchip-rk3588-loader.bin
or
$ rockusb download-boot u-boot-rockchip-rk3588-loader.bin
Another option that does not require use of proprietary tools is using
open source tools such as rkflashtool or rkusbboot that can load the
binman images directly without any need to first create a special loader
image to RAM boot from maskrom, e.g.:
$ rkflashtool l < u-boot-rockchip-usb471.bin
$ rkflashtool L < u-boot-rockchip-usb472.bin
or
$ rkusbboot u-boot-rockchip-usb471.bin u-boot-rockchip-usb472.bin
Signed-off-by: Jonas Karlman <[email protected]>
Tested-by: Arnaud Patard <[email protected]>
Reviewed-by: Kever Yang <[email protected]>
Diffstat (limited to 'boot')
| -rw-r--r-- | boot/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/boot/Kconfig b/boot/Kconfig index 85f4d468069..245e120c70b 100644 --- a/boot/Kconfig +++ b/boot/Kconfig @@ -275,6 +275,9 @@ config SPL_LOAD_FIT_ADDRESS hex "load address of fit image" depends on SPL_LOAD_FIT default 0x44000000 if ARCH_IMX8M + default 0x60080000 if ARCH_ROCKCHIP && SPL_TEXT_BASE = 0x60000000 + default 0x40200000 if ARCH_ROCKCHIP && SPL_TEXT_BASE = 0x40000000 + default 0x00200000 if ARCH_ROCKCHIP && SPL_TEXT_BASE = 0x00000000 default 0x0 help Specify the load address of the fit image that will be loaded |