[U-Boot] [PATCH v3] tegra: nyan-big: Update CONFIG_SYS_TEXT to the default in README.chromium
Peter Robinson
pbrobinson at gmail.com
Sun Jun 10 05:17:46 UTC 2018
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 at gmail.com>
---
v3: Update commit message
v2: Update to 2018.07 RC1
configs/nyan-big_defconfig | 2 +-
doc/README.chromium | 27 +++++++--------------------
2 files changed, 8 insertions(+), 21 deletions(-)
diff --git a/configs/nyan-big_defconfig b/configs/nyan-big_defconfig
index 8868d1f9e10..3b64c643716 100644
--- a/configs/nyan-big_defconfig
+++ b/configs/nyan-big_defconfig
@@ -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
diff --git a/doc/README.chromium b/doc/README.chromium
index 7bf4d874474..45eaeced2da 100644
--- a/doc/README.chromium
+++ b/doc/README.chromium
@@ -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:
--
2.17.1
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