Robert Schilling

Empty entity is exposing a field

1

I have the following empty entity: ``` ruby class Project < Grape::Entity end ``` Although the entity is empty the JSON response contains a field `permission`: ``` json { "permissions":...

[pmp] Use top-level straps for PMP reset values

3

By using top-level straps for the PMP reset configuration its easier to implement different reset configurations if there are multiple Ibex cores in the system.

[topgen] Improve support for multiple address spaces

3

I'm working towards adding support for multiple CPUs within the OpenTitan complex. With this change, `topgen` supports MMIO regions in multiple address spaces. It requires associating each memory with an...

[hw,dma,rtl] Set interrupt only when transition to done / error

1

Previously, clearing the DONE or ERROR interrupt before clearing STATUS.done would raise the same interrupt a second time, which could bring FW out of sync. With this change, the DONE...

The memory interrupt allowed the system to configure a soft and hard memory limit address. When reaching one of those limits during a DMA transfer, the DMA would fire the...

Previously, the error code is written when entering the error state AND while being in there. Since the error code value is only availble in the transition into the error...

[top,dma] Connect SPI device to the DMA

2

This PR connects the SPI device to the DMA to be able to be used with the DMA hardware handshake mode. Doing so, this PR adds the following changes: *...

[hw,dma,rtl] Add STATUS.chunk_done bit

1

This PR adds a new STATUS.chunk_done bit to the status register to determine the cause when the DMA stopped an operation. In multi-chunk mem2mem transfers, where each chunk is transferred...

This PR syncs the DMA DIF from `integrated_dev` to `master`. This PR depends on https://github.com/lowRISC/opentitan/pull/24434