opensbi.git/lib/utils/irqchip, branch v1.0

include: sbi_utils: Introduce an helper to get fdt base address

2021-11-02T05:53:16Z

This simply adds an helper to get fdt address which is more explicit than sbi_scratch_thishart_arg1_ptr. Signed-off-by: Alexandre Ghiti Reviewed-by: Xiang W Reviewed-by: Anup Patel

lib: utils/irqchip: Automatically delegate T-HEAD PLIC access

2021-10-21T04:36:00Z

The T-HEAD PLIC implementation requires setting a delegation bit to allow access from S-mode. Now that the T-HEAD PLIC has its own compatible string, set this bit automatically from the PLIC driver, instead of reaching into the PLIC's MMIO space from another driver. Signed-off-by: Samuel Holland Reviewed-by: Bin Meng Reviewed-by: Anup Patel

lib: utils: Try other FDT drivers when we see SBI_ENODEV

2021-05-24T10:19:21Z

We should try other FDT drivers when we see SBI_ENODEV returned by cold_init() of FDT driver. Signed-off-by: Anup Patel Reviewed-by: Atish Patra Reviewed-by: Xiang W

lib: utils/irqchip: Initialize all matching irqchip DT nodes

2020-05-23T05:06:39Z

We can have multiple matching DT nodes of the same FDT irqchip driver so in this case we should call cold_init() for all matching DT nodes instead of just first matching DT node. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Extend fdt_find_match() Implementation

2020-05-23T05:06:33Z

We extend fdt_find_match() implementation by adding node offset parameter which represents the first node to match from. The improved fdt_find_match() can be used to find multiple match nodes. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Allow PLIC functions to be used for multiple PLICs

2020-05-23T05:06:29Z

We extend all PLIC functions to have a "struct plic_data *" parameter pointing to PLIC details. This allows platforms to use these functions for multiple PLIC instances. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Remove redundant parameters from PLIC init functions

2020-05-23T05:06:26Z

The "target_hart" and "hart_count" parameters of PLIC cold and warm init functions are only used for sanity checks and not required in PLIC initialization. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Add simple FDT irqchip framework

2020-05-01T04:30:35Z

We add simple irqchip framework which will select and use irqchip driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: irqchip/plic: Fix maximum priority threshold value

2020-04-06T03:28:56Z

As per the PLIC specification, maximum priority threshold value is 0x7. Even though, writing a higher value doesn't cause any error in qemu hifive unleashed, there may be some implementation which checks the upper and may result in an illegal access. Signed-off-by: Atish Patra Reviewed-by: Bin Meng Reviewed-by: Anup Patel

lib: utils: Move PLIC DT fix up codes to fdt_helper.c

2020-03-18T04:10:14Z

Now that we have a dedicated fdt_helper.c file for DT releated helper routines, move plic_fdt_fixup() codes from plic.c to fdt_helper.c and rename it to fdt_plic_fixup() at the same time, to keep name consistency in the same file. Signed-off-by: Bin Meng Reviewed-by: Atish Patra