opensbi.git/lib/utils/irqchip, branch v0.7

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

lib: irqchip/plic: Disable all contexts and IRQs

2020-02-13T04:28:27Z

To initialize PLIC in sane state, we should: 1. set maximum threshold value of M-mode PLIC contexts 2. set maximum threshold value of S-mode PLIC contexts 3. set irq priorities to miniumum Fix the comment and initialize the threshold/priorities correctly. Signed-off-by: Anup Patel Signed-off-by: Atish Patra

lib: Use correct type for return value

2019-08-12T03:53:28Z

The error check 'plic_off < 0' does nothing, since plic_off is stored as a u32. Fix this by changing it to an int, which matches the return type of fdt_node_offset_by_compatible(). Signed-off-by: Jacob Garber Reviewed-by: Bin Meng Reviewed-by: Atish Patra

utils: Use cpu_to_fdt32() when writing to fdt

2019-07-25T03:29:50Z

Although it does not make a functional difference, both cpu_to_fdt32() and fdt32_to_cpu() pass on to CPU_TO_FDT32, we should use cpu_to_fdt32() to be semantically correct. Signed-off-by: Georg Kotheimer Reviewed-by: Atish Patra Acked-by: Anup Patel

Changed plic_set_thresh() and plic_set_ie() to public

2019-06-29T11:34:06Z

Signed-off-by: Panagiotis Peristerakis

utils: Remove tinyfdt.c

2019-06-19T04:25:13Z

tinyfdt.c was originally added to provide a minimal implementation of fdt parsing. However, we have already included libfdt in OpenSBI for more complicated operations. Remove tinfdt and replace its functiolity using libfdt. Signed-off-by: Atish Patra Acked-by: Anup Patel

platform: Enable all drivers by default.

2019-06-19T04:19:05Z

The drivers and libfdt are built as libsbiutils.a instead of libplatsbi.a. libsbiutils.a are not built per platform specific. Thus, enable all drivers by default. Signed-off-by: Atish Patra Acked-by: Anup Patel

lib: Rename string.x to sbi_string.x

2019-06-19T04:18:59Z

All string functions are part of libsbi. It makes more sense to rename them to sbi_string.x as the libsbi can be linked with external libraries that can have similar implementation. Signed-off-by: Atish Patra Acked-by: Anup Patel

platform: Move platform common to lib/utils.

2019-06-19T04:18:56Z

Currently, platform/common contains platform/non-platform specific common minimal drivers and libraries. This is helpful is all platforms are built within opensbi framework. Move them to lib/utils so that any external platform code also can reuse the minimalistic drivers or other common libraries. This patch doesn't introduce any functional changes. Signed-off-by: Atish Patra Acked-by: Anup Patel