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authorRoland Hieber <rohieb@rohieb.name>2018-06-12 00:02:28 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2018-06-13 09:15:53 +0200
commitea3ed4174287b450993af819ea6603a9893f0278 (patch)
tree7bc3cdd84e8e44e68a0ea6304e288f476c8e3f77 /Documentation
parent44be94a03a402d19ab044f39e1f829186a42b8e5 (diff)
downloadbarebox-ea3ed4174287b450993af819ea6603a9893f0278.tar.gz
barebox-ea3ed4174287b450993af819ea6603a9893f0278.tar.xz
doc: boards: Amazon Kindle 4/5: apply some more formatting
Signed-off-by: Roland Hieber <rohieb@rohieb.name> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/boards/imx/amazon-kindle-4-5.rst39
1 files changed, 25 insertions, 14 deletions
diff --git a/Documentation/boards/imx/amazon-kindle-4-5.rst b/Documentation/boards/imx/amazon-kindle-4-5.rst
index 1e71cd26ba..bc6bf2609b 100644
--- a/Documentation/boards/imx/amazon-kindle-4-5.rst
+++ b/Documentation/boards/imx/amazon-kindle-4-5.rst
@@ -18,24 +18,32 @@ are shipped with a vendor modified u-boot imximage based on u-boot v2009.08.
To upload and run a new bootloader the older devices can be put into
USB-downloader mode by the SOC microcode when a specific key is pressed during
startup:
+
* the fiveway down button on the model D01100
* the home button on model D01200
+
A new USB device "NS Blank CODEX" should appear, barebox may be uploaded using
-$ scripts/imx/imx-usb-loader barebox-kindle-d01100.img
-$ scripts/imx/imx-usb-loader barebox-kindle-d01200.img
+
+::
+
+ $ scripts/imx/imx-usb-loader barebox-kindle-d01100.img
+ $ scripts/imx/imx-usb-loader barebox-kindle-d01200.img
+
Hint: keep the select button pressed down to get the barebox USB console.
Barebox may be used as drop-in replacement for the shipped bootloader, when
the imximg fits into 258048 bytes. When installing the barebox imximg on
-the eMMC take care not to overwrite the vendor supplied serial numbers stored
-on the eMMC.
-e.g. for the D01100 just write the imx-header and the application section:
-loady -t usbserial
-memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.imx_header 1024 0 2048
-memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.self 4096 0 253952
+the eMMC, take care not to overwrite the vendor supplied serial numbers stored
+on the eMMC,
+e.g. for the D01100 just write the imx-header and the application section::
+
+ loady -t usbserial
+ memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.imx_header 1024 0 2048
+ memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.self 4096 0 253952
Note: a USB serial ACM console will be launched by a barebox init script
when
+
* the cursor select key is pressed during startup of model D01100
* the home button is pressed within a second after startup of model D01200.
If you press the home button during startup, you will enter USB boot mode.
@@ -47,12 +55,15 @@ power consumption to a few milliamps of battery power, after some minutes
the power consumption is further reduced to about 550 microamps. Switching
on iomux pullups may significantly reduce your standby-time.
-Hints to reduce the build image size.
+Hints to reduce the build image size
+------------------------------------
+
Note that a drop-in replacement barebox imximage must not exceed 258048 bytes
since the space behind it is in use. Hence, don't build in drivers and FS
-that are not required, e.g.:
- NET, DISK_AHCI, DISK_INTF_PLATFORM_IDE, DISK_ATA, VIDEO, PWM, LED,
- USB_STORAGE, USB_ULPI, NAND, MTD_UBI, FS_UBIFS, MFD_MC34704, MFD_MC9SDZ60,
- MFD_STMPE, EEPROM_AT25, EEPROM_AT24, KEYBOARD_GPIO, PARTITION_DISK_EFI
+that are not required, e.g.
+``NET, DISK_AHCI, DISK_INTF_PLATFORM_IDE, DISK_ATA, VIDEO, PWM, LED,
+USB_STORAGE, USB_ULPI, NAND, MTD_UBI, FS_UBIFS, MFD_MC34704, MFD_MC9SDZ60,
+MFD_STMPE, EEPROM_AT25, EEPROM_AT24, KEYBOARD_GPIO, PARTITION_DISK_EFI``
+
Also unselect support for other boards to get rid of their dependencies.
-Further select IMAGE_COMPRESSION_XZKERN
+Further select ``IMAGE_COMPRESSION_XZKERN``.