doc: arch: Convert README.sandbox to reST
Convert plain text documentation to reStructuredText format and add it to Sphinx TOC tree. No essential content change. Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
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Bin Meng
Tom Rini
parent
f25c369096
commit
49116e6d23
@ -12,5 +12,6 @@ Architecture-specific doc
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mips
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nds32
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nios2
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sandbox
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sh
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x86
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@ -1,10 +1,12 @@
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2014 The Chromium OS Authors.
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*/
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.. SPDX-License-Identifier: GPL-2.0+ */
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.. Copyright (c) 2014 The Chromium OS Authors.
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.. sectionauthor:: Simon Glass <sjg@chromium.org>
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Sandbox
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=======
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Native Execution of U-Boot
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==========================
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--------------------------
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The 'sandbox' architecture is designed to allow U-Boot to run under Linux on
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almost any hardware. To achieve this it builds U-Boot (so far as possible)
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@ -35,33 +37,31 @@ Note that standalone/API support is not available at present.
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Basic Operation
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---------------
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To run sandbox U-Boot use something like:
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To run sandbox U-Boot use something like::
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make sandbox_defconfig all
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./u-boot
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Note:
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If you get errors about 'sdl-config: Command not found' you may need to
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install libsdl1.2-dev or similar to get SDL support. Alternatively you can
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build sandbox without SDL (i.e. no display/keyboard support) by removing
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the CONFIG_SANDBOX_SDL line in include/configs/sandbox.h or using:
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Note: If you get errors about 'sdl-config: Command not found' you may need to
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install libsdl1.2-dev or similar to get SDL support. Alternatively you can
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build sandbox without SDL (i.e. no display/keyboard support) by removing
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the CONFIG_SANDBOX_SDL line in include/configs/sandbox.h or using::
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make sandbox_defconfig all NO_SDL=1
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./u-boot
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U-Boot will start on your computer, showing a sandbox emulation of the serial
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console:
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console::
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U-Boot 2014.04 (Mar 20 2014 - 19:06:00)
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U-Boot 2014.04 (Mar 20 2014 - 19:06:00)
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DRAM: 128 MiB
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Using default environment
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DRAM: 128 MiB
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Using default environment
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In: serial
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Out: lcd
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Err: lcd
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=>
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In: serial
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Out: lcd
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Err: lcd
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=>
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You can issue commands as your would normally. If the command you want is
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not supported you can add it to include/configs/sandbox.h.
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@ -73,7 +73,7 @@ Console / LCD support
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---------------------
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Assuming that CONFIG_SANDBOX_SDL is defined when building, you can run the
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sandbox with LCD and keyboard emulation, using something like:
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sandbox with LCD and keyboard emulation, using something like::
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./u-boot -d u-boot.dtb -l
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@ -198,16 +198,21 @@ Sandbox Variants
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There are unfortunately quite a few variants at present:
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sandbox - should be used for most tests
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sandbox64 - special build that forces a 64-bit host
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sandbox_flattree - builds with dev_read_...() functions defined as inline.
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sandbox:
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should be used for most tests
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sandbox64:
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special build that forces a 64-bit host
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sandbox_flattree:
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builds with dev_read\_...() functions defined as inline.
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We need this build so that we can test those inline functions, and we
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cannot build with both the inline functions and the non-inline functions
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since they are named the same.
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sandbox_noblk - builds without CONFIG_BLK, which means the legacy block
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sandbox_noblk:
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builds without CONFIG_BLK, which means the legacy block
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drivers are used. We cannot use both the legacy and driver-model block
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drivers since they implement the same functions
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sandbox_spl - builds sandbox with SPL support, so you can run spl/u-boot-spl
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sandbox_spl:
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builds sandbox with SPL support, so you can run spl/u-boot-spl
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and it will start up and then load ./u-boot. It is also possible to
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run ./u-boot directly.
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@ -234,42 +239,44 @@ promiscuous mode so that the network card won't filter out packets not destined
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for its configured (on Linux) MAC address.
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The RAW sockets Ethernet API requires elevated privileges in Linux. You can
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either run as root, or you can add the capability needed like so:
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either run as root, or you can add the capability needed like so::
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sudo /sbin/setcap "CAP_NET_RAW+ep" /path/to/u-boot
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sudo /sbin/setcap "CAP_NET_RAW+ep" /path/to/u-boot
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The default device tree for sandbox includes an entry for eth0 on the sandbox
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host machine whose alias is "eth1". The following are a few examples of network
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operations being tested on the eth0 interface.
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sudo /path/to/u-boot -D
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.. code-block:: none
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DHCP
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....
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sudo /path/to/u-boot -D
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setenv autoload no
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setenv ethrotate no
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setenv ethact eth1
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dhcp
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DHCP
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....
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PING
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....
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setenv autoload no
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setenv ethrotate no
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setenv ethact eth1
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dhcp
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setenv autoload no
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setenv ethrotate no
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setenv ethact eth1
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dhcp
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ping $gatewayip
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PING
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....
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TFTP
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....
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setenv autoload no
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setenv ethrotate no
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setenv ethact eth1
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dhcp
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ping $gatewayip
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setenv autoload no
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setenv ethrotate no
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setenv ethact eth1
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dhcp
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setenv serverip WWW.XXX.YYY.ZZZ
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tftpboot u-boot.bin
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TFTP
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....
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setenv autoload no
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setenv ethrotate no
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setenv ethact eth1
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dhcp
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setenv serverip WWW.XXX.YYY.ZZZ
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tftpboot u-boot.bin
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The bridge also supports (to a lesser extent) the localhost interface, 'lo'.
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@ -287,12 +294,14 @@ The default device tree for sandbox includes an entry for lo on the sandbox
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host machine whose alias is "eth5". The following is an example of a network
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operation being tested on the lo interface.
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TFTP
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....
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.. code-block:: none
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setenv ethrotate no
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setenv ethact eth5
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tftpboot u-boot.bin
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TFTP
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....
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setenv ethrotate no
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setenv ethact eth5
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tftpboot u-boot.bin
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SPI Emulation
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@ -300,7 +309,7 @@ SPI Emulation
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Sandbox supports SPI and SPI flash emulation.
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This is controlled by the spi_sf argument, the format of which is:
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This is controlled by the spi_sf argument, the format of which is::
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bus:cs:device:file
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@ -309,24 +318,23 @@ This is controlled by the spi_sf argument, the format of which is:
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device - SPI device emulation name
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file - File on disk containing the data
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For example:
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For example::
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dd if=/dev/zero of=spi.bin bs=1M count=4
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./u-boot --spi_sf 0:0:M25P16:spi.bin
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With this setup you can issue SPI flash commands as normal:
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With this setup you can issue SPI flash commands as normal::
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=>sf probe
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SF: Detected M25P16 with page size 64 KiB, total 2 MiB
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=>sf read 0 0 10000
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SF: 65536 bytes @ 0x0 Read: OK
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=>
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=>sf probe
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SF: Detected M25P16 with page size 64 KiB, total 2 MiB
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=>sf read 0 0 10000
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SF: 65536 bytes @ 0x0 Read: OK
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Since this is a full SPI emulation (rather than just flash), you can
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also use low-level SPI commands:
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also use low-level SPI commands::
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=>sspi 0:0 32 9f
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FF202015
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=>sspi 0:0 32 9f
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FF202015
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This is issuing a READ_ID command and getting back 20 (ST Micro) part
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0x2015 (the M25P16).
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@ -338,14 +346,13 @@ for each driver.
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Configuration settings for the curious are:
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CONFIG_SANDBOX_SPI_MAX_BUS
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CONFIG_SANDBOX_SPI_MAX_BUS:
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The maximum number of SPI buses supported by the driver (default 1).
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CONFIG_SANDBOX_SPI_MAX_CS
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The maximum number of chip selects supported by the driver
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(default 10).
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CONFIG_SANDBOX_SPI_MAX_CS:
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The maximum number of chip selects supported by the driver (default 10).
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CONFIG_SPI_IDLE_VAL
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CONFIG_SPI_IDLE_VAL:
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The idle value on the SPI bus
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@ -354,20 +361,20 @@ Block Device Emulation
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U-Boot can use raw disk images for block device emulation. To e.g. list
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the contents of the root directory on the second partion of the image
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"disk.raw", you can use the following commands:
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"disk.raw", you can use the following commands::
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=>host bind 0 ./disk.raw
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=>ls host 0:2
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=>host bind 0 ./disk.raw
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=>ls host 0:2
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A disk image can be created using the following commands:
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A disk image can be created using the following commands::
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$> truncate -s 1200M ./disk.raw
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$> echo -e "label: gpt\n,64M,U\n,,L" | /usr/sbin/sgdisk ./disk.raw
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$> lodev=`sudo losetup -P -f --show ./disk.raw`
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$> sudo mkfs.vfat -n EFI -v ${lodev}p1
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$> sudo mkfs.ext4 -L ROOT -v ${lodev}p2
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$> truncate -s 1200M ./disk.raw
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$> echo -e "label: gpt\n,64M,U\n,,L" | /usr/sbin/sgdisk ./disk.raw
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$> lodev=`sudo losetup -P -f --show ./disk.raw`
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$> sudo mkfs.vfat -n EFI -v ${lodev}p1
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$> sudo mkfs.ext4 -L ROOT -v ${lodev}p2
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or utilize the device described in test/py/make_test_disk.py:
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or utilize the device described in test/py/make_test_disk.py::
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#!/usr/bin/python
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import make_test_disk
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@ -395,16 +402,16 @@ space. See existing code for examples.
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Debugging the init sequence
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---------------------------
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If you get a failure in the initcall sequence, like this:
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If you get a failure in the initcall sequence, like this::
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initcall sequence 0000560775957c80 failed at call 0000000000048134 (err=-96)
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Then you use can use grep to see which init call failed, e.g.:
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Then you use can use grep to see which init call failed, e.g.::
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$ grep 0000000000048134 u-boot.map
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stdio_add_devices
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Of course another option is to run it with a debugger such as gdb:
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Of course another option is to run it with a debugger such as gdb::
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$ gdb u-boot
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...
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@ -414,6 +421,8 @@ Of course another option is to run it with a debugger such as gdb:
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Note that two locations are reported, since this function is used in both
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board_init_f() and board_init_r().
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.. code-block:: none
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(gdb) r
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Starting program: /tmp/b/sandbox/u-boot
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[Thread debugging using libthread_db enabled]
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@ -445,13 +454,13 @@ environment variable to the correct pathname before building U-Boot.
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Using valgrind / memcheck
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-------------------------
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It is possible to run U-Boot under valgrind to check memory allocations:
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It is possible to run U-Boot under valgrind to check memory allocations::
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valgrind u-boot
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If you are running sandbox SPL or TPL, then valgrind will not by default
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notice when U-Boot jumps from TPL to SPL, or from SPL to U-Boot proper. To
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fix this, use:
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fix this, use::
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valgrind --trace-children=yes u-boot
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@ -462,22 +471,24 @@ Testing
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U-Boot sandbox can be used to run various tests, mostly in the test/
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directory. These include:
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command_ut
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- Unit tests for command parsing and handling
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compression
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- Unit tests for U-Boot's compression algorithms, useful for
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command_ut:
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Unit tests for command parsing and handling
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compression:
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Unit tests for U-Boot's compression algorithms, useful for
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security checking. It supports gzip, bzip2, lzma and lzo.
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driver model
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- Run this pytest
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driver model:
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Run this pytest::
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./test/py/test.py --bd sandbox --build -k ut_dm -v
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image
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- Unit tests for images:
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image:
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Unit tests for images:
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test/image/test-imagetools.sh - multi-file images
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test/image/test-fit.py - FIT images
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tracing
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- test/trace/test-trace.sh tests the tracing system (see README.trace)
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verified boot
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- See test/vboot/vboot_test.sh for this
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tracing:
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test/trace/test-trace.sh tests the tracing system (see README.trace)
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verified boot:
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See test/vboot/vboot_test.sh for this
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If you change or enhance any of the above subsystems, you shold write or
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expand a test and include it with your patch series submission. Test
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@ -495,14 +506,12 @@ Memory Map
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Sandbox has its own emulated memory starting at 0. Here are some of the things
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that are mapped into that memory:
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======= ======================== ===============================
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Addr Config Usage
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======= ======================== ===============================
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0 CONFIG_SYS_FDT_LOAD_ADDR Device tree
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e000 CONFIG_BLOBLIST_ADDR Blob list
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10000 CONFIG_MALLOC_F_ADDR Early memory allocation
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f0000 CONFIG_PRE_CON_BUF_ADDR Pre-console buffer
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100000 CONFIG_TRACE_EARLY_ADDR Early trace buffer (if enabled)
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=
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--
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Simon Glass <sjg@chromium.org>
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Updated 22-Mar-14
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======= ======================== ===============================
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