67 lines
4.0 KiB
Markdown
67 lines
4.0 KiB
Markdown
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# Code Update Diagrams
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1. [High-Level Overview](#High-Level Overview)
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## High-Level Overview
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```
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┌──────────────┐ ┌─────────────┐ ┌────────────┐
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│User Interface│ │Image Manager│ │Item Updater│
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└──────┬───────┘ └──────┬──────┘ └──────┬─────┘
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│ Upload │ │
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│ Firmware │ │
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│ Image to BMC │ │
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├──────────────────────────▶│ │
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│ │ │
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│ │ Extract │
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│ │ image │
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│ │ contents │
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│ │ │ │
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│ ├─────┘ │
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│ ▼ │
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│ │ │
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│ │ Create │
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│ │Software D-Bus │
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│ │ object[1] │
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│ │ │ │
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│ ├───────┘ │
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│ ▼ │
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│ │ │
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│ Request to ● │
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│ Activate │
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│ Software │
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│ D-Bus Object │
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├────────────────────────────────────────────────▶│
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│ │ Verify
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│ │ digital
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│ │ signatures
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│ │ │
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│ ├──────┘
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│ ▼
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│ │
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│ │ Write
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│ │ image to
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│ │ flash[*]
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│ │ │
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│ ├─────┘
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│ ▼
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│ │
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│ Success │
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│◀────────────────────────────────────────────────┤
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│ │
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│ ●
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▼
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BMC Reboot is
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required to boot
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from the updated
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image
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```
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- [1]
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[Software D-Bus Object](https://github.com/openbmc/phosphor-dbus-interfaces/tree/master/yaml/xyz/openbmc_project/Software)
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- [*] In a static layout configuration, the images are stored in RAM and the
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content is written to flash during BMC reboot. Reference the update and
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shutdown scripts provided by
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[initrdscripts](https://github.com/openbmc/openbmc/tree/master/meta-phosphor/recipes-phosphor/initrdscripts)
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