opensbi.git/platform/generic/include, branch release-1.5.x

platform: generic: andes: Refine Andes PMA related code

2024-06-18T10:45:22Z

This patch refines the Andes PMA related code. The main change is refactor andes_pma_[read|write]_cfg() and andes_pma_[read|write]_addr() into new functions andes_pma_[read|write]_num(). Also, fix some coding style problems. Signed-off-by: Ben Zong-You Xie Reviewed-by: Anup Patel

platform: generic: thead: separate T-Head PMU Errata

2024-05-09T12:39:05Z

As Guo Ren said from the kernel mailing list [1], future T-Head CPUs, including the newer versions of T-Head C908, will feature standard Sscofpmf extension. For these CPUs, T-Head's implementation of PMU Overflow Interrupts may not needed anymore. In this case, we shouldn't apply T-Head PMU for all T-Head CPUs. Thus, this patch separated T-Head PMU errata. [1] https://lore.kernel.org/linux-riscv/Zh9sUUUT09LZb0MO@gmail.com/ Signed-off-by: Yangyu Chen Reviewed-by: Inochi Amaoto Reviewed-by: Anup Patel

platform: andes: Change all occurrences of andes45 to andes

2024-05-09T12:27:51Z

To make the framework suit all Andes CPUs, change all occurrences of andes45 to andes. In addition, we fix some coding style problems and remove an unused macro in andes.h. Signed-off-by: Ben Zong-You Xie Reviewed-by: Anup Patel

platform: andes: Rename files with the prefix andes45

2024-05-09T12:26:50Z

Rename files with the prefix andes45 to andes. Signed-off-by: Ben Zong-You Xie Reviewed-by: Anup Patel

platform: andes: Drop andes_pmu_setup()

2024-03-04T04:50:46Z

andes_pmu_setup() [1] was intended to populate event mapping from hardcoded arrays, however, this increases firmware size and we should just use PMU DT node [2] instead. Link: https://lists.infradead.org/pipermail/opensbi/2023-November/006032.html [1] Link: https://github.com/riscv-software-src/opensbi/blob/v1.4/docs/pmu_support.md#example-3 [2] Signed-off-by: Yu Chien Peter Lin Reviewed-by: Anup Patel

lib: sbi: Allow ecall handlers to directly update register state

2023-12-19T10:26:37Z

Some of the upcoming SBI extensions (such as SSE) will directly update register state so improve the prototype of ecall handler to accommodate this. Further, this flexibility allows us to push the trap redirection from sbi_ecall_handler() to the sbi_ecall_legacy_handler(). Signed-off-by: Anup Patel

platform: andes: Factor out is_andes() helper

2023-12-06T12:33:12Z

We will need is_andes(45) in the following patch, so factor out the code that parses marchid to make it reusable for checking any Andes CPU variants. Also improves the comment in ae350_hart_start(). Signed-off-by: Yu Chien Peter Lin Reviewed-by: Anup Patel

platform: andes: Add Andes custom PMU support

2023-12-06T12:23:45Z

Before the ratification of Sscofpmf, the Andes PMU extension was designed to support the sampling and filtering with hardware performance counters (zihpm), it works with the current SBI PMU extension and Linux SBI PMU driver. We implement 1) the PMU device callbacks that update the corresponding bits on custom CSRs, 2) extentions_init() to detect the hardware support of Andes PMU and initialize the per-hart PMU related CSR, and 3) pmu_init() to register PMU device and populate event mappings. Also define a andes_pmu_setup() function which is in preparation for adding default PMU mappings in andes_hpm.h Signed-off-by: Yu Chien Peter Lin Reviewed-by: Leo Yu-Chi Liang Reviewed-by: Anup Patel

platform: generic: Introduce pmu_init() platform override

2023-12-06T12:19:59Z

Add pmu_init() platform override, which will be used to register PMU device and populate event mappings. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Atish Patra Reviewed-by: Lad Prabhakar Reviewed-by: Anup Patel

platform: include: andes45: Add PMU related CSR defines

2023-12-06T12:01:36Z

Add CSR definitions for Andes PMU extension. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Leo Yu-Chi Liang Reviewed-by: Anup Patel Reviewed-by: Atish Patra Reviewed-by: Lad Prabhakar Tested-by: Lad Prabhakar