mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 11:18:28 +00:00
75 lines
2.7 KiB
Text
75 lines
2.7 KiB
Text
|
Andes Technology SoC AG101
|
||
|
|
==========================
|
||
|
|
|
||
|
|
AG101 is the first SoC produced by Andes Technology using N1213 CPU core.
|
||
|
|
AG101 has integrated both AHB and APB bus and many periphals for application
|
||
|
|
and product development.
|
||
|
|
|
||
|
|
ADP-AG101
|
||
|
|
=========
|
||
|
|
|
||
|
|
ADP-AG101 is the SoC with AG101 hardcore CPU.
|
||
|
|
|
||
|
|
Please check http://www.andestech.com/p2-4.htm for detail of this SoC.
|
||
|
|
|
||
|
|
Configurations
|
||
|
|
==============
|
||
|
|
|
||
|
|
CONFIG_MEM_REMAP:
|
||
|
|
Doing memory remap is essential for preparing some non-OS or RTOS
|
||
|
|
applications.
|
||
|
|
|
||
|
|
This is also a must on ADP-AG101 board.
|
||
|
|
(While other boards may not have this problem).
|
||
|
|
|
||
|
|
The reason is because the ROM/FLASH circuit on PCB board.
|
||
|
|
AG101-A0 board has 2 jumpers MA17 and SW5 to configure which
|
||
|
|
ROM/FLASH is used to boot.
|
||
|
|
|
||
|
|
When SW5 = "0101", MA17 = LO, the ROM is connected to BANK0,
|
||
|
|
and the FLASH is connected to BANK1.
|
||
|
|
When SW5 = "1010", MA17 = HI, the ROM is disabled (still at BANK0),
|
||
|
|
and the FLASH is connected to BANK0.
|
||
|
|
It will occur problem when doing flash probing if the flash is at
|
||
|
|
BANK0 (0x00000000) while memory remapping was skipped.
|
||
|
|
|
||
|
|
Other board like ADP-AG101P may not enable this since there is only
|
||
|
|
a FLASH connected to bank0.
|
||
|
|
|
||
|
|
CONFIG_SKIP_LOWLEVEL_INIT:
|
||
|
|
If you want to boot this system from FLASH and bypass e-bios (the
|
||
|
|
other boot loader on ROM). You should undefine CONFIG_SKIP_LOWLEVEL_INIT
|
||
|
|
in "include/configs/adp-ag101.h".
|
||
|
|
|
||
|
|
Build and boot steps
|
||
|
|
====================
|
||
|
|
|
||
|
|
build:
|
||
|
|
1. Prepare the toolchains and make sure the $PATH to toolchains is correct.
|
||
|
|
2. Use `make adp-ag101` in u-boot root to build the image.
|
||
|
|
|
||
|
|
burn u-boot to flash:
|
||
|
|
1. Make sure the MA17 (J16) is Lo.
|
||
|
|
2. Make sure the dip switch SW5 is set to "0101".
|
||
|
|
3. Power On. Press button "S1", then press button "SW1", then you will found the
|
||
|
|
debug LED show 67 means the system successfully booted into e-bios.
|
||
|
|
Now you can control the e-bios boot loader from your console.
|
||
|
|
4. Under "Command>>" prompt, enter "97" (CopyImageFromCard)
|
||
|
|
5. Under "Type Dir Name of [CF/SD] =>" promtp, enter "c".
|
||
|
|
6. Under "Enter Filename =>" prompt, enter the file name of u-boot image you
|
||
|
|
just build. It is usually "u-boot.bin".
|
||
|
|
7. Under "Enter Dest. Address =>" prompt, enter the memory address where you
|
||
|
|
want to put the binary from SD card to RAM.
|
||
|
|
Address "0x500000" is our suggestion.
|
||
|
|
8. Under "Command>>" prompt again, enter "55" (CLI) to use interactive command
|
||
|
|
environment.
|
||
|
|
9. Under "CLI>" prompt, enter "burn 0x500000 0x80400000 0x30000" to burn the
|
||
|
|
binary from RAM to FLASH.
|
||
|
|
10. Under "CLI>" prompt, enter "exit" to finish the burn process.
|
||
|
|
|
||
|
|
boot u-boot from flash:
|
||
|
|
1. Make sure the MA17 (J16) is Hi).
|
||
|
|
2. Make sure the dip switch SW5 is set to "1010".
|
||
|
|
3. Power On. Press button "S1", then you will see the debug LED count to 20.
|
||
|
|
4. Now you can use u-boot on ADP-AG101 board.
|