From fe67eaccd0d265ac01974980edad5395ade488eb Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 31 May 2017 17:57:36 -0600 Subject: [PATCH] README: Add instructions for chain-loading U-Boot on jerry Add instructions for chromebook_jerry. Signed-off-by: Simon Glass --- doc/README.chromium | 70 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/doc/README.chromium b/doc/README.chromium index 61e285da5e..7bf4d87447 100644 --- a/doc/README.chromium +++ b/doc/README.chromium @@ -145,6 +145,76 @@ from the load address. If this changes, you either need to modify U-Boot to be fully relocatable, or expect it to hang. +chromebook_jerry +---------------- + +The instruction are similar to those for Nyan with changes as noted below: + +1. Patch U-Boot + +Open include/configs/rk3288_common.h + +Change: + +#define CONFIG_SYS_TEXT_BASE 0x00100000 + +to: + +#define CONFIG_SYS_TEXT_BASE 0x02000100 + + + +2. Build U-Boot + + mkdir b + make -j8 O=b/chromebook_jerry CROSS_COMPILE=arm-linux-gnueabi- \ + chromebook_jerry_defconfig all + + +3. See above + +4. Build and sign an image + + ./b/chromebook_jerry/tools/mkimage -f doc/chromium/chromebook_jerry.its \ + u-boot-chromium.fit + echo test >dummy.txt + vbutil_kernel --arch arm --keyblock doc/chromium/devkeys/kernel.keyblock \ + --signprivate doc/chromium/devkeys/kernel_data_key.vbprivk \ + --version 1 --config dummy.txt --vmlinuz u-boot-chromium.fit \ + --bootloader dummy.txt --pack u-boot.kpart + + +5. See above + +6. See above + +7. Start it up + +Reboot the device in dev mode. Make sure that you have USB booting enabled. To +do this, login as root (via Ctrl-Alt-forward_arrow) and type +'enable_dev_usb_boot'. You only need to do this once. + +Reboot the device with the SD card inserted. Press Clrl-U at the developer +mode screen. It should show something like the following on the display: + + U-Boot 2017.05-00649-g72acdbf-dirty (May 29 2017 - 14:57:05 -0600) + + Model: Google Jerry + Net: Net Initialization Skipped + No ethernet found. + Hit any key to stop autoboot: 0 + + +8. Known problems + +None as yet. + + +9. Notes + +None as yet. + + Other notes =========== -- 2.39.5