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Add a defconfig for MIPS Creator CI20

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MIPS Creator CI20 is a Linux and Android development system from
MIPS/Imagination Technologies. It incorporates an Ingenic JZ4780 SoC
which includes a 1.2GHz dual core MIPS32 processor and Imagination
PowerVR SGX540 GPU.

More information can be found at:
  http://elinux.org/MIPS_Creator_CI20

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Vicente Olivert Riera 2014-11-28 16:43:29 +00:00 committed by Peter Korsgaard
parent 8e1295017c
commit 51a9555115
2 changed files with 60 additions and 0 deletions
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*********************
* MIPS Creator CI20 *
*********************
The 'ci20_defconfig' will create a root filesystem and a kernel image
under the 'output/images/' directory. This document will try to explain how
to use them in order to run Buildroot in the MIPS Creator CI20 board.
Assuming you are at the U-Boot prompt of the MIPS Creator CI20, you have to
load the generated kernel image by using the 'tftpboot' command. In
order to do that, you will need to get the network working. Here you
have the instructions to set the ip address, netmask and gateway:
setenv ipaddr x.x.x.x
setenv netmask x.x.x.x
setenv gatewayip x.x.x.x
Now you have to set the ip for the TFTP server you are going to load the
kernel image from, and also the name of the kernel image file (we use
'uImage' as a filename in this example):
setenv serverip x.x.x.x
setenv bootfile uImage
And finally load the kernel image:
tftpboot
Now you have to extract the generated root filesystem into a USB drive
or SD-Card. Here you have the instructions to boot from the two of them.
You have to choose the one your prefer:
From USB
setenv bootargs console=ttyS4,115200 console=tty0 mem=256M@0x0
mem=768M@0x30000000 root=/dev/sda1
From SD-Card
setenv bootargs console=ttyS4,115200 console=tty0 mem=256M@0x0
mem=768M@0x30000000 root=/dev/mmcblk0p1
And finally run this command to boot the board:
bootm

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# architecture
BR2_mipsel=y
BR2_mips_32r2=y
# BR2_MIPS_SOFT_FLOAT is not set
# system
BR2_KERNEL_HEADERS_VERSION=y
BR2_DEFAULT_KERNEL_VERSION="3.0.8"
BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_0=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y
BR2_TARGET_GENERIC_GETTY_PORT="ttyS4"
# kernel
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_GIT=y
BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/MIPS/CI20_linux.git"
BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="ba11adc7ac8792b0eb7415a1cc9c0968604a6fac"
BR2_LINUX_KERNEL_DEFCONFIG="ci20"