| commit | b504e1e9d0b651e30f4e338bd7bacfda6635f991 | [log] [tgz] |
|---|---|---|
| author | Eunchan Kim <eunchan@opentitan.org> | Tue Aug 03 11:24:14 2021 -0700 |
| committer | Eunchan Kim <eunchan@opentitan.org> | Wed Aug 04 21:57:23 2021 -0700 |
| tree | 90839f495ff335cad9e8f5d368580bb1be2333db | |
| parent | 1e9c700dfe753ae38a930cbf6eb327dade61c934 [diff] |
[spi_device] Define JEDEC ID CSR This commit implements `Read JEDEC ID` command process logic. It follows the datapath of Read Status command logic. The logic latches JEDEC_ID CSR when CSb is asserted by the host system. Then uses the latched value along the SPI transaction. The return order is Manufacturer ID (JEDEC_ID[23:16]) then Byte 1 of JEDEC ID , then byte 0. If the host system keeps asserting CSb and toggles the SCK, the logic sends all 0 following the last byte of JEDEC ID. Signed-off-by: Eunchan Kim <eunchan@opentitan.org>
OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or “monorepo”, where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.
The project contains comprehensive documentation of all IPs and tools. You can access it online at docs.opentitan.org.
Have a look at CONTRIBUTING and our documentation on project organization and processes for guidelines on how to contribute code to this repository.
Unless otherwise noted, everything in this repository is covered by the Apache License, Version 2.0 (see LICENSE for full text).