109 lines
3.2 KiB
Diff
109 lines
3.2 KiB
Diff
From b3133b61450e648cdd5f12c9556378c880932494 Mon Sep 17 00:00:00 2001
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From: Peter Robinson <pbrobinson@gmail.com>
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Date: Fri, 8 Jun 2018 04:31:10 +0100
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Subject: [PATCH] tegra: nyan-big: Update CONFIG_SYS_TEXT to the default in
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README.chromium
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To build u-boot on a Nyan Big Chromebook the docs outline adjusting the Tegra124
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defined CONFIG_SYS_TEXT_BASE but this has since been moved to individual config
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files. We should have the default required for u-boot chain loading on the
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chromebook as the default CONFIG_SYS_TEXT_BASE and update the docs to remove
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this now non required step.
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Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
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---
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configs/nyan-big_defconfig | 2 +-
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doc/README.chromium | 27 +++++++--------------------
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2 files changed, 8 insertions(+), 21 deletions(-)
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diff --git a/configs/nyan-big_defconfig b/configs/nyan-big_defconfig
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index 8868d1f9e10..3b64c643716 100644
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--- a/configs/nyan-big_defconfig
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+++ b/configs/nyan-big_defconfig
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@@ -1,6 +1,6 @@
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CONFIG_ARM=y
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CONFIG_TEGRA=y
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-CONFIG_SYS_TEXT_BASE=0x80110000
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+CONFIG_SYS_TEXT_BASE=0x81000100
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CONFIG_DEBUG_UART_BASE=0x70006000
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CONFIG_DEBUG_UART_CLOCK=408000000
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CONFIG_TEGRA124=y
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diff --git a/doc/README.chromium b/doc/README.chromium
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index 7bf4d874474..45eaeced2da 100644
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--- a/doc/README.chromium
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+++ b/doc/README.chromium
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@@ -43,26 +43,13 @@ https://git.collabora.com/cgit/user/tomeu/u-boot.git/commit/?h=nyan-big
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https://lists.denx.de/pipermail/u-boot/2017-May/289491.html
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https://github.com/chromeos-nvidia-androidtv/gnu-linux-on-acer-chromebook-13#copy-data-to-the-sd-card
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-1. Patch U-Boot
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-
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-Open include/configs/tegra124-common.h
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-
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-Change:
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-
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-#define CONFIG_SYS_TEXT_BASE 0x80110000
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-
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-to:
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-
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-#define CONFIG_SYS_TEXT_BASE 0x81000100
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-
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-
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-2. Build U-Boot
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+1. Build U-Boot
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mkdir b
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make -j8 O=b/nyan-big CROSS_COMPILE=arm-linux-gnueabi- nyan-big_defconfig all
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-3. Select a .its file
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+2. Select a .its file
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Select something from doc/chromium which matches your board, or create your
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own.
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@@ -72,7 +59,7 @@ used by U-Boot. This is because the Chromebook expects to pass it to the
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kernel, and crashes if it is not present.
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-4. Build and sign an image
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+3. Build and sign an image
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./b/nyan-big/tools/mkimage -f doc/chromium/nyan-big.its u-boot-chromium.fit
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echo test >dummy.txt
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@@ -82,7 +69,7 @@ kernel, and crashes if it is not present.
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--bootloader dummy.txt --pack u-boot.kpart
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-5. Prepare an SD card
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+4. Prepare an SD card
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DISK=/dev/sdc # Replace with your actual SD card device
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sudo cgpt create $DISK
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@@ -91,12 +78,12 @@ kernel, and crashes if it is not present.
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sudo gdisk $DISK # Enter command 'w' to write a protective MBR to the disk
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-6. Write U-Boot to the SD card
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+5. Write U-Boot to the SD card
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sudo dd if=u-boot.kpart of=/dev/sdc1; sync
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-7. Start it up
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+6. Start it up
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Reboot the device in dev mode. Make sure that you have USB booting enabled. To
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do this, login as root (via Ctrl-Alt-forward_arrow) and type
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@@ -115,7 +102,7 @@ mode screen. It should show something like the following on the display:
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Tegra124 (Nyan-big) #
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-8. Known problems
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+7. Known problems
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On the serial console the word MMC is chopped at the start of the line:
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--
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2.17.1
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