diff options
Diffstat (limited to 'doc/usage/cmd')
| -rw-r--r-- | doc/usage/cmd/cbcmos.rst | 45 | ||||
| -rw-r--r-- | doc/usage/cmd/cbsysinfo.rst | 99 | ||||
| -rw-r--r-- | doc/usage/cmd/cedit.rst | 76 | ||||
| -rw-r--r-- | doc/usage/cmd/sb.rst | 79 |
4 files changed, 299 insertions, 0 deletions
diff --git a/doc/usage/cmd/cbcmos.rst b/doc/usage/cmd/cbcmos.rst new file mode 100644 index 00000000000..9395cf1cbd7 --- /dev/null +++ b/doc/usage/cmd/cbcmos.rst @@ -0,0 +1,45 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +cbcmos +====== + +Synopis +------- + +:: + + cbcmos check [<dev>] + cbcmos update [<dev>] + + +Description +----------- + +This checks or updates the CMOS-RAM checksum value against the CMOS-RAM +contents. It is used with coreboot, which provides information about where to +find the checksum and what part of the CMOS RAM it covers. + +If `<dev>` is provided then the named real-time clock (RTC) device is used. +Otherwise the default RTC is used. + +Example +------- + +This shows checking and updating a checksum across bytes 38 and 39 of the +CMOS RAM:: + + => rtc read 38 2 + 00000038: 71 00 q. + => cbc check + => rtc write 38 66 + => rtc read 38 2 + 00000038: 66 00 f. + => cbc check + Checksum 7100 error: calculated 6600 + => cbc update + Checksum 6600 written + => cbc check + => + +See also :ref:`cedit_cb_load` which shows an example that includes the +configuration editor. diff --git a/doc/usage/cmd/cbsysinfo.rst b/doc/usage/cmd/cbsysinfo.rst index 80d8ba1b662..28f61d9c63e 100644 --- a/doc/usage/cmd/cbsysinfo.rst +++ b/doc/usage/cmd/cbsysinfo.rst @@ -23,3 +23,102 @@ Example :: => cbsysinfo + Coreboot table at 500, size 5c4, records 1d (dec 29), decoded to 000000007dce4520, forwarded to 000000007ff9a000 + + CPU KHz : 0 + Serial I/O port: 00000000 + base : 00000000 + pointer : 000000007ff9a370 + type : 1 + base : 000003f8 + baud : 0d115200 + regwidth : 1 + input_hz : 0d1843200 + PCI addr : 00000010 + Mem ranges : 7 + id: type || base || size + 0: 10:table 0000000000000000 0000000000001000 + 1: 01:ram 0000000000001000 000000000009f000 + 2: 02:reserved 00000000000a0000 0000000000060000 + 3: 01:ram 0000000000100000 000000007fe6d000 + 4: 10:table 000000007ff6d000 0000000000093000 + 5: 02:reserved 00000000fec00000 0000000000001000 + 6: 02:reserved 00000000ff800000 0000000000800000 + option_table: 000000007ff9a018 + Bit Len Cfg ID Name + 0 180 r 0 reserved_memory + 180 1 e 4 boot_option 0:Fallback 1:Normal + 184 4 h 0 reboot_counter + 190 8 r 0 reserved_century + 1b8 8 r 0 reserved_ibm_ps2_century + 1c0 1 e 1 power_on_after_fail 0:Disable 1:Enable + 1c4 4 e 6 debug_level 5:Notice 6:Info 7:Debug 8:Spew + 1d0 80 r 0 vbnv + 3f0 10 h 0 check_sum + CMOS start : 1c0 + CMOS end : 1cf + CMOS csum loc: 3f0 + VBNV start : ffffffff + VBNV size : ffffffff + CB version : 4.21-5-g7e6eae9679e3-dirty + Extra : + Build : Thu Sep 07 14:52:41 UTC 2023 + Time : 14:52:41 + Framebuffer : 000000007ff9a410 + Phys addr : fd000000 + X res : 0d800 + X res : 0d600 + Bytes / line: c80 + Bpp : 0d32 + pos/size red 16/8, green 8/8, blue 0/8, reserved 24/8 + GPIOs : 0 + id: port polarity val name + MACs : 0d10 + 0: 12:00:00:00:28:00 + 1: 00:00:00:fd:00:00 + 2: 20:03:00:00:58:02 + 3: 80:0c:00:00:20:10 + 4: 08:00:08:18:08:00 + 5: 16:00:00:00:10:00 + 6: 00:d0:fd:7f:00:00 + 7: 17:00:00:00:10:00 + 8: 00:e0:fd:7f:00:00 + 9: 37:00:00:00:10:00 + Multiboot tab: 0000000000000000 + CB header : 000000007ff9a000 + CB mainboard: 000000007ff9a344 + vendor : 0: Emulation + part_number : 10: QEMU x86 i440fx/piix4 + vboot handoff: 0000000000000000 + size : 0 + vdat addr : 0000000000000000 + size : 0 + SMBIOS : 7ff6d000 + size : 8000 + ROM MTRR : 0 + Tstamp table: 000000007ffdd000 + CBmem cons : 000000007ffde000 + Size : 1fff8 + Cursor : 3332 + MRC cache : 0000000000000000 + ACPI GNVS : 0000000000000000 + Board ID : ffffffff + RAM code : ffffffff + WiFi calib : 0000000000000000 + Ramoops buff: 0 + size : 0 + SF size : 0 + SF sector : 0 + SF erase cmd: 0 + FMAP offset : 0 + CBFS offset : 200 + CBFS size : 3ffe00 + Boot media size: 400000 + MTC start : 0 + MTC size : 0 + Chrome OS VPD: 0000000000000000 + RSDP : 000000007ff75000 + Unimpl. : 10 37 40 + => + +Note that "Unimpl." shows tags which U-Boot does not currently implement. diff --git a/doc/usage/cmd/cedit.rst b/doc/usage/cmd/cedit.rst index f29f1b3f388..e54ea204b9f 100644 --- a/doc/usage/cmd/cedit.rst +++ b/doc/usage/cmd/cedit.rst @@ -18,6 +18,7 @@ Synopsis cedit write_env [-v] cedit read_env [-v] cedit write_cmos [-v] [dev] + cedit cb_load Description ----------- @@ -92,6 +93,13 @@ updated. Normally the first RTC device is used to hold the data. You can specify a different device by name using the `dev` parameter. +.. _cedit_cb_load: + +cedit cb_load +~~~~~~~~~~~~~ + +This is supported only on x86 devices booted from coreboot. It creates a new +configuration editor which can be used to edit CMOS settings. Example ------- @@ -158,3 +166,71 @@ Here is an example with the device specified:: => cedit write_cmos rtc@43 => + +This example shows editing coreboot CMOS-RAM settings. A script could be used +to automate this:: + + => cbsysinfo + Coreboot table at 500, size 5c4, records 1d (dec 29), decoded to 000000007dce3f40, forwarded to 000000007ff9a000 + + CPU KHz : 0 + Serial I/O port: 00000000 + base : 00000000 + pointer : 000000007ff9a370 + type : 1 + base : 000003f8 + baud : 0d115200 + regwidth : 1 + input_hz : 0d1843200 + PCI addr : 00000010 + Mem ranges : 7 + id: type || base || size + 0: 10:table 0000000000000000 0000000000001000 + 1: 01:ram 0000000000001000 000000000009f000 + 2: 02:reserved 00000000000a0000 0000000000060000 + 3: 01:ram 0000000000100000 000000007fe6d000 + 4: 10:table 000000007ff6d000 0000000000093000 + 5: 02:reserved 00000000fec00000 0000000000001000 + 6: 02:reserved 00000000ff800000 0000000000800000 + option_table: 000000007ff9a018 + Bit Len Cfg ID Name + 0 180 r 0 reserved_memory + 180 1 e 4 boot_option 0:Fallback 1:Normal + 184 4 h 0 reboot_counter + 190 8 r 0 reserved_century + 1b8 8 r 0 reserved_ibm_ps2_century + 1c0 1 e 1 power_on_after_fail 0:Disable 1:Enable + 1c4 4 e 6 debug_level 5:Notice 6:Info 7:Debug 8:Spew + 1d0 80 r 0 vbnv + 3f0 10 h 0 check_sum + CMOS start : 1c0 + CMOS end : 1cf + CMOS csum loc: 3f0 + VBNV start : ffffffff + VBNV size : ffffffff + ... + Unimpl. : 10 37 40 + +Check that the CMOS RAM checksum is correct, then create a configuration editor +and load the settings from CMOS RAM:: + + => cbcmos check + => cedit cb + => cedit read_cmos + +Now run the cedit. In this case the user selected 'save' so `cedit run` returns +success:: + + => if cedit run; then cedit write_cmos -v; fi + Write 2 bytes from offset 30 to 38 + => echo $? + 0 + +Update the checksum in CMOS RAM:: + + => cbcmos check + Checksum 6100 error: calculated 7100 + => cbcmos update + Checksum 7100 written + => cbcmos check + => diff --git a/doc/usage/cmd/sb.rst b/doc/usage/cmd/sb.rst new file mode 100644 index 00000000000..37431aff7c8 --- /dev/null +++ b/doc/usage/cmd/sb.rst @@ -0,0 +1,79 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +.. index:: + single: sbi (command) + +sbi command +=========== + +Synopsis +-------- + +:: + + sb handoff + sb map + sb state + +Description +----------- + +The *sb* command is used to display information about sandbox's internal +operation. See :doc:`/arch/sandbox/index` for more information. + +sb handoff +~~~~~~~~~~ + +This shows information about any handoff information received from SPL. If +U-Boot is started from an SPL build, it shows a valid magic number. + +sb map +~~~~~~ + +This shows any mappings between sandbox's emulated RAM and the underlying host +address-space. + +Fields shown are: + +Addr + Address in emulated RAM + +Mapping + Equivalent address in the host address-space. While sandbox requests address + ``0x10000000`` from the OS, this is not always available. + +Refcnt + Shows the number of references to this mapping. + +sb state +~~~~~~~~ + +This shows basic information about the sandbox state, currently just the +command-line with which sandbox was started. + +Example +------- + +This shows checking for the presence of SPL-handoff information. For this to +work, ``u-boot-spl`` must be run, with build that enables ``CONFIG_SPL``, such +as ``sandbox_spl``:: + + => sb handoff + SPL handoff magic 14f93c7b + +This shows output from the *sb map* subcommand, with a single mapping:: + + Sandbox memory-mapping + Addr Mapping Refcnt + ff000000 000056185b46d6d0 2 + +This shows output from the *sb state* subcommand:: + + => sb state + Arguments: + /tmp/b/sandbox/u-boot -D + +Configuration +------------- + +The *sb handoff* command is only supported if CONFIG_HANDOFF is enabled. |