Config, Segments, Device Tree
Aerology stores the Zephyr Config and Device Tree in both ZAPs and cores. These files are accessable with a few subcommands.
Config, the config subcommand
The config subcommand dumps the Kconfig that was used for the build of
Zephyr in the ZAP or core.
For example:
$ aerology config dhcpv4_client.zap
--- Lots of config output ---
#
# Boot Options
#
# CONFIG_IS_BOOTLOADER is not set
# CONFIG_BOOTLOADER_MCUBOOT is not set
# CONFIG_BOOTLOADER_BOSSA is not set
# end of Boot Options
#
# Compatibility
#
CONFIG_COMPAT_INCLUDES=y
# end of Compatibility
Further, the config may be queried from a core dump as well. If the core dump and the ZAP have been built from the same build of Zephyr, their configs will be the same.
$ diff <(aerology config dhcpv4_client.zap) <(aerology config dhcpv4_client.core.0)
--- No Output ---
Device Tree, the dts subcommand
Similar to the config subcommand, the dts subcommand dumps the device
tree source used in the build.
For example:
$ aerology dts dhcpv4_client.core.0
--- Lots of DTS output ---
reserved-memory {
#address-cells = < 0x1 >;
#size-cells = < 0x1 >;
ranges;
code: memory@01060000 {
reg = < 0x1060000 0x60000 >;
};
ram: memory@21000000 {
reg = < 0x21000000 0x200000 >;
};
};
};
As with the config subcommand, the dts subcommand works on both ZAPs
and cores.
Memory Layout, the segments subcommand
The memory layout of a Zephyr (and TFM) application can be visually inspected
with the segments subcommand:
$ aerology segments --summary dhcpv4_client.core.0
Note: Not to scale.
Key: r = readable, w = writable, x = executable, z = zeroed on startup
┃ = overlapping section
zephyr tfm_s bl2
31007928┌──────────┐
│ rwz│
31000418└──────────┘
31000414┌──────────┐
│ rw│
31000000└──────────┘
3000ff70 ┌──────────┐
│ rwz│
3000bf38 ┢━━━━━━━━━━┪
┃ rw┃
3000bbc0 ┡━━━━━━━━━━┩
30005f40 │ │┌──────────┐
│ ││ rw│
30003ac0 ┢━━━━━━━━━━┪│ │
┃ rw┃│ │
30003a80 ┡━━━━━━━━━━┩│ │
30002020 ┢━━━━━━━━━━┪│ │
┃ rw┃│ │
30002000 ┡━━━━━━━━━━┩│ │
30000400 │ │├──────────┤
│ ││ rwz│
30000000 └──────────┘└──────────┘
11076384┌──────────┐
│ rwx│
11060000└──────────┘
1105f500 ┌──────────┐
│ rx│
1105f4c0 └──────────┘
11021280 ┌──────────┐
│ rx│
11009fe0 └──────────┘
11009f68 ┌──────────┐
│ rwx│
11000000 └──────────┘
100055e0 ┌──────────┐
│ rwx│
10000000 └──────────┘
The above shows the --summary output, because the unsummarized output is
quite long.
Without summary it looks like:
$ aerology segments dhcpv4_client.core.0
Note: Not to scale.
Key: r = readable, w = writable, x = executable, z = zeroed on startup
┃ = overlapping section
zephyr tfm_s bl2
31007928┌──────────────────────────────┐
│noinit rwz│
31002020├──────────────────────────────┤
│bss rwz│
31000418└──────────────────────────────┘
31000414┌──────────────────────────────┐
│net_l2_area r│
31000404├──────────────────────────────┤
│net_if_dev_area rw│
310003e8├──────────────────────────────┤
│net_if_area rw│
310003a8└──────────────────────────────┘
310003a4┌──────────────────────────────┐
│_net_buf_pool_area rw│
3100034c├──────────────────────────────┤
│k_sem_area rw│
310002ec├──────────────────────────────┤
│k_msgq_area rw│
310002bc├──────────────────────────────┤
│k_mutex_area rw│
3100026c├──────────────────────────────┤
│k_mem_slab_area rw│
31000234├──────────────────────────────┤
│log_dynamic_sections rw│
310001d0├──────────────────────────────┤
│device_states rw│
31000188└──────────────────────────────┘
31000187┌──────────────────────────────┐
│datas rw│
31000000└──────────────────────────────┘
3000ff70 ┌──────────────────────────────┐
│.TFM_BSS rwz│
3000bf40 └──────────────────────────────┘
3000bf38 ┌──────────────────────────────┐
│.TFM_DATA rw│
3000bbc0 ├──────────────────────────────┤
│.TFM_PSA_ROT_LINKER_BSS rwz│
30005f40 │ │┌──────────────────────────────┐
│ ││.heap rwz│
30004f40 │ │├──────────────────────────────┤
│ ││.msp_stack rwz│
30003ac0 ├──────────────────────────────┤│ │
│.TFM_PSA_ROT_LINKER_DATA rw││ │
30003a80 ├──────────────────────────────┤│ │
│.TFM_APP_ROT_LINKER_BSS rwz││ │
30003740 │ │└──────────────────────────────┘
30003728 │ │┌──────────────────────────────┐
│ ││.bss rwz│
30002020 ├──────────────────────────────┤│ │
│.TFM_APP_ROT_LINKER_DATA rw││ │
30002000 ├──────────────────────────────┤│ │
│.heap rwz││ │
30001000 ├──────────────────────────────┤│ │
│.psp_stack rwz││ │
30000800 ├──────────────────────────────┤│ │
│.msp_stack rwz││ │
30000494 │ │├──────────────────────────────┤
│ ││.data rw│
30000400 ├──────────────────────────────┤├──────────────────────────────┤
│.tfm_bl2_shared_data rwz││.tfm_bl2_shared_data rwz│
30000000 └──────────────────────────────┘└──────────────────────────────┘
11076384┌──────────────────────────────┐
│rodata r│
11071bfc├──────────────────────────────┤
│device_handles r│
11071b90├──────────────────────────────┤
│shell_root_cmds_sections r│
11071b38├──────────────────────────────┤
│shell_area r│
11071b08├──────────────────────────────┤
│log_backends_sections r│
11071af8├──────────────────────────────┤
│log_const_sections r│
11071a30├──────────────────────────────┤
│sw_isr_table rw│
11071630├──────────────────────────────┤
│devices r│
11071480├──────────────────────────────┤
│initlevel r│
110713a0├──────────────────────────────┤
│.ARM.exidx r│
11071398├──────────────────────────────┤
│text rx│
11060640├──────────────────────────────┤
│rom_start rwx│
11060000└──────────────────────────────┘
1105f500 ┌──────────────────────────────┐
│.gnu.sgstubs rx│
1105f4c0 └──────────────────────────────┘
11021280 ┌──────────────────────────────┐
│.ARM.exidx r│
11021278 ├──────────────────────────────┤
│.psa_interface_thread_call rx│
11021180 ├──────────────────────────────┤
│.TFM_UNPRIV_CODE rx│
11009fe0 └──────────────────────────────┘
11009f68 ┌──────────────────────────────┐
│.ER_TFM_CODE rx│
110056c0 ├──────────────────────────────┤
│.TFM_APP_ROT_LINKER rx│
11004940 ├──────────────────────────────┤
│.TFM_PSA_ROT_LINKER rx│
11000f40 └──────────────────────────────┘
11000f24 ┌──────────────────────────────┐
│.TFM_SP_LOAD_LIST r│
11000d34 ├──────────────────────────────┤
│.zero.table rw│
11000d1c ├──────────────────────────────┤
│.copy.table rw│
11000cf8 ├──────────────────────────────┤
│.TFM_VECTORS rx│
11000400 └──────────────────────────────┘
100055e0 ┌──────────────────────────────┐
│.zero.table rw│
100055d0 ├──────────────────────────────┤
│.copy.table rw│
100055b8 ├──────────────────────────────┤
│.ARM.exidx r│
100055b0 ├──────────────────────────────┤
│.text rx│
10000000 └──────────────────────────────┘