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tegra: nyan-big: Update CONFIG_SYS_TEXT to the default in README.chromium

To build U-Boot on a Nyan Big Chromebook the docs outline adjusting the Tegra124
defined CONFIG_SYS_TEXT_BASE but this has since been moved to individual config
files. We should have the default required for U-Boot chain loading on the
chromebook as the default CONFIG_SYS_TEXT_BASE and update the docs to remove
this now non required step.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
master
Peter Robinson 2 年前
committed by Tom Warren
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共有 2 个文件被更改,包括 8 次插入21 次删除
  1. +1
    -1
      configs/nyan-big_defconfig
  2. +7
    -20
      doc/README.chromium

+ 1
- 1
configs/nyan-big_defconfig 查看文件

@@ -1,6 +1,6 @@
CONFIG_ARM=y
CONFIG_TEGRA=y
CONFIG_SYS_TEXT_BASE=0x80110000
CONFIG_SYS_TEXT_BASE=0x81000100
CONFIG_DEBUG_UART_BASE=0x70006000
CONFIG_DEBUG_UART_CLOCK=408000000
CONFIG_TEGRA124=y


+ 7
- 20
doc/README.chromium 查看文件

@@ -43,26 +43,13 @@ https://git.collabora.com/cgit/user/tomeu/u-boot.git/commit/?h=nyan-big
https://lists.denx.de/pipermail/u-boot/2017-May/289491.html
https://github.com/chromeos-nvidia-androidtv/gnu-linux-on-acer-chromebook-13#copy-data-to-the-sd-card

1. Patch U-Boot

Open include/configs/tegra124-common.h

Change:

#define CONFIG_SYS_TEXT_BASE 0x80110000

to:

#define CONFIG_SYS_TEXT_BASE 0x81000100


2. Build U-Boot
1. Build U-Boot

mkdir b
make -j8 O=b/nyan-big CROSS_COMPILE=arm-linux-gnueabi- nyan-big_defconfig all


3. Select a .its file
2. Select a .its file

Select something from doc/chromium which matches your board, or create your
own.
@@ -72,7 +59,7 @@ used by U-Boot. This is because the Chromebook expects to pass it to the
kernel, and crashes if it is not present.


4. Build and sign an image
3. Build and sign an image

./b/nyan-big/tools/mkimage -f doc/chromium/nyan-big.its u-boot-chromium.fit
echo test >dummy.txt
@@ -82,7 +69,7 @@ kernel, and crashes if it is not present.
--bootloader dummy.txt --pack u-boot.kpart


5. Prepare an SD card
4. Prepare an SD card

DISK=/dev/sdc # Replace with your actual SD card device
sudo cgpt create $DISK
@@ -91,12 +78,12 @@ kernel, and crashes if it is not present.
sudo gdisk $DISK # Enter command 'w' to write a protective MBR to the disk


6. Write U-Boot to the SD card
5. Write U-Boot to the SD card

sudo dd if=u-boot.kpart of=/dev/sdc1; sync


7. Start it up
6. 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
@@ -115,7 +102,7 @@ mode screen. It should show something like the following on the display:
Tegra124 (Nyan-big) #


8. Known problems
7. Known problems

On the serial console the word MMC is chopped at the start of the line:



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