opensbi.git/lib/sbi/objects.mk, branch v1.2

lib: sbi_ecall: Split up sbi_ecall_replace

2022-11-15T11:14:03Z

Split up sbi_ecall_replace so that each extension is in its individual file. Also reorganize the corresponding section in lib/sbi/objects.mk so that it is grouped by extension, now that the object file targets are split up. Signed-off-by: Vivian Wang Reviewed-by: Anup Patel

lib: sbi_ecall: Add Kconfig option for each extension

2022-10-23T05:31:33Z

For each SBI extension, we: - Add a Kconfig option for it - Add the extension to sbi_ecall_exts only if the extension is enabled - Add the corresponding sbi_ecall_* object file only if the extension is enabled Special cases are as follows: - The legacy extensions are lumped together as one 'big' extension, as has always been the case in OpenSBI code. - The platform-defined vendor extensions are regarded as one extension. - The Base extension cannot be disabled. - sbi_ecall_replace implements multiple extensions, so it's not easy to avoid linking it in. Enable it always, and use #ifdef to disable/enable individual extensions. Signed-off-by: Vivian Wang Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi_ecall: Generate extensions list with carray

2022-10-23T05:30:30Z

Instead of hard-coding the list of extensions in C code, use carray to generate the list of extensions. Using carray makes adding and removing extensions slightly cleaner. This also paves the way for using Kconfig to disable unneeded extensions. Signed-off-by: Vivian Wang Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi: Add a simple external interrupt handling framework

2022-02-28T04:13:12Z

Currently, the external interrupt handling is scattered between sbi_init and sbi_trap. This patch moves all external interrupt handling into a simple framework called sbi_irqchip. Signed-off-by: Anup Patel Reviewed-by: Xiang W Reviewed-by: Atish Patra

lib: sbi: Implement SBI PMU extension

2021-07-11T05:08:02Z

RISC-V SBI specfication 0.3 defines a PMU extension that allows supervisor mode to start/stop/configure pmu related events. This patch implements all of the functionality defined in the specification. Reviewed-by: Anup Patel Signed-off-by: Atish Patra

lib: sbi: Add PMU support

2021-07-11T04:53:18Z

RISC-V SBI v0.3 specification defined a PMU extension to configure/start/stop the hardware/firmware pmu events. Implement PMU support in OpenSBI library. The implementation is agnostic of event to counter mapping & mhpmevent value configuration. That means, it expects platform hooks will be used to set up the mapping and provide the mhpmevent value at runtime. Reviewed-by: Anup Patel Signed-off-by: Atish Patra

lib: sbi: Add initial domain support

2020-10-20T05:52:15Z

An OpenSBI domain is a logical entity representing a set of HARTs and a set of memory regions for these HARTs. The OpenSBI domains support will allow OpenSBI platforms and previous booting stage (i.e. U-Boot SPL, Coreboot, etc) to partition a system into multiple domains where each domain will run it's own software. For inter-domain isolation, OpenSBI will eventually use various HW features such as PMP, ePMP, IOPMP, SiFive shield, etc but initial implementation only use HW PMP support. This patch provides initial implementation of OpenSBI domains where we have a root/default domain and OpenSBI platforms can provide non-root/custom domains using domain_get() callback. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Atish Patra

lib: Add platform features in boot time print

2020-05-10T04:54:08Z

We have now clear distinction between platform and hart features. Modify the boot print messages to print platform features in a string format. In the process, this patch moved relatively larger functions to its own file from platform.h header file. Signed-off-by: Atish Patra Tested-by: Jonathan Balkind Reviewed-by: Anup Patel

lib: Create a separate math helper function file

2020-05-10T04:29:24Z

There may be few common mathematics helper functions which can be used anywhere in OpenSBI project. Add a separate math helper function file to add these functions. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Rename unprivileged trap handler

2020-05-10T04:29:16Z

Unprivileged trap handler can be reused for any cases where the executing code expects a trap. Rename it to "expected" trap handler as it will be used in other cases in future. Signed-off-by: Atish Patra Tested-by: Jonathan Balkind Reviewed-by: Anup Patel