opensbi.git/include/sbi/sbi_scratch.h, branch v0.6

lib: Introduce sbi_tlb_fifo_request() API

2020-01-22T06:40:40Z

Instead of directly calling sbi_ipi_send_many(), we introduce sbi_tlb_fifo_request() for halting a set of HARTs. This way in future we can assign any IPI event number for remote FENCE within sbi_tlb.c only. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: Typo fix in comment for SBI_SCRATCH_SIZE define

2020-01-22T06:40:31Z

This patch fixes a minor typo in comment for SBI_SCRATCH_SIZE define. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Introduce sbi_dprintf() API

2019-08-09T07:08:33Z

This patch introduces new sbi_dprintf() API for runtime debug prints. The sbi_dprintf() will print to console for a given HART only when SBI_SCRATCH_DEBUG_PRINTS option in enabled in sbi_scratch for this HART. We can now add debug prints using sbi_dprintf() at important places in OpenSBI sources. These debug prints will only show up when previous booting stage or compile time parameter sets the SBI_SCRATCH_DEBUG_PRINTS option in scratch space. Signed-off-by: Anup Patel Reviewed-by: Bin Meng

lib: Add a simple brain-dead allocator to manage extra scratch space

2019-05-24T02:52:47Z

We have extra space above scratch space (sbi_scratch) which we are currently using to manage per-HART IPI data and TLB request management. In future, more parts of OpenSBI will use the extra scratch space so it will become difficult to manage extra scratch space using just defines and macros. This patch adds a simple brain-dead allocator to manage extra scratch space. This allocator never expects anything to be free-ed hence it keeps incrementing to next allocation offset until it runs-out of space. In future, we can have more sophisticated allocator which will allow us to re-claim free-ed space and also allows us to track owner of allocated space. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

all: run clang-format and update checked-in files

2019-04-24T04:19:46Z

Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson

all: Annotate some tables to have clang-format leave them alone

2019-04-24T04:19:46Z

One of the shortcomings of clang-format is that it doesn't allow for aligned define tables, which is used for a number of constants. Add annotation to disable the automatic formatting where needed. Signed-off-by: Olof Johansson

lib: Use a fifo to keep track of sfence related IPIs.

2019-04-03T04:27:42Z

Currently, there is no provision for tracking multiple IPIs sent to a single hart at the same time by different harts. Use a fifo manage the outstanding requests. While dequeueing, read all the entries once, because we have only 1 bit to track the type of IPI. Once the queue is full, busy wait until the there is space available in queue. This is not the most elegant approach. It should be changed in favor of a wakeup event once available in opensbi. Signed-off-by: Atish Patra

lib: Increase the scratch space to 512 bytes.

2019-04-03T04:27:42Z

Currently scratch space per hart is 256 bytes. Increase it to 512 bytes to accomodate ipi queue. Signed-off-by: Atish Patra

lib: Disable the boot prints if SBI_SCRATCH_NO_BOOT_PRINTS is set

2019-03-29T10:19:11Z

Use the newly introduced "options" in "struct sbi_scratch" to conditionally disable the boot prints. Signed-off-by: Bin Meng

firmware: Introduce "options" in "struct sbi_scratch"

2019-03-29T10:19:11Z

Introduce "options" in "struct sbi_scratch" and firmware can update it based on optional compile time flags before calling sbi_init(). Signed-off-by: Bin Meng