opensbi.git/platform/generic/thead, branch v1.8

platform: generic: Remove platform override hooks

2025-04-23T07:02:51Z

Now that all of the overrides are modifying generic_platform_ops directly, remove the unused hooks and forwarding functions. The remaining members of struct platform_override match struct fdt_driver, so use that type instead. This allows a future commit to reuse the fdt_driver-based init function. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-8-samuel.holland@sifive.com Signed-off-by: Anup Patel

platform: generic: Modify platform ops instead of using hooks

2025-04-23T07:02:51Z

Switch all existing platform overrides to use the helper pattern instead of the platform hooks. After this commit, only the .match_table and .init members of struct platform_override are used. There are two minor behavioral differences: - For Allwinner D1, fdt_add_cpu_idle_states() is now called before the body of generic_final_init(). This should have no functional impact. - For StarFive JH7110, if the /chosen/starfive,boot-hart-id property is missing, the code now falls back to using generic_coldboot_harts, instead of accepting any hart. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-7-samuel.holland@sifive.com Signed-off-by: Anup Patel

platform: generic: thead: Avoid casting away const

2025-04-23T07:02:50Z

struct fdt_match expects match data to be const. Follow this expectation so that no type casting is needed. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-4-samuel.holland@sifive.com Signed-off-by: Anup Patel

platform: generic: thead: add Sophgo SG2044

2025-02-12T12:30:18Z

The Sophgo SG2044 is a new version of C920, although it supports sscofpmf, it still needs this pmu quirks its cores. Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

lib: sbi: pmu: fix usage of sbi_pmu_irq_bit()

2025-01-30T05:00:45Z

While sbi_pmu_irq_bit() was used to delegate irq to S-mode, LCOFIP usage was still hardcoded in various places. This led to change the returned value of sbi_pmu_irq_bit() to be a bit number rather than a bit mask since it returns an 'int' and we need to obtain the bit number itself to handle it in the IRQs handlers. Add a similar function to return the irq mask which can also be used where the mask is required rather than the bit itself. Signed-off-by: Clément Léger Reviewed-by: Samuel Holland Reviewed-by: Atish Patra

platform: generic: Pass FDT to early/final_init overrides

2024-08-24T07:32:54Z

Several of these override functions access the FDT blob. Explicitly indicate which callbacks are allowed to modify the FDT blob by passing the parameter as a possibly-const pointer. This also reduces code size by deduplicating the call to fdt_get_address(). Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

platform: generic: thead: add Sophgo CV18XX/SG200X series

2024-05-16T04:48:44Z

The Sophgo CV18XX/SG200X series SoCs have a standard C906 core. Add support for it. Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

platform: generic: thead: add Canaan Kendryte K230

2024-05-09T12:40:25Z

Canaan Kendryte K230 SoC has T-Head C908 cores inside. The dt-binding has been merged into the linux kernel [1]. However, it has early version of C908 core which does not have Sscofpmf and need to use T-Head PMU extension. Thus, we add a K230 compatible string to thead_generic_match and set quirk for T-Head PMU. [1] https://lore.kernel.org/linux-riscv/tencent_4D85743622F39109466913393EE2F6C5980A@qq.com/ Signed-off-by: Yangyu Chen Reviewed-by: Inochi Amaoto 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: generic: thead: improve tlb flush errata

2023-11-16T04:12:12Z

Flushing the tlb entries can solve the thead tlb problem, but flushing it by address will miss something and lead to a exception in some rare cases, and this is more common for sg2042. To solve this problem, flush the tlb entries by asid in the custom trap handler to ensure it is refreshed. Signed-off-by: Inochi Amaoto Reviewed-by: Guo Ren Reviewed-by: Anup Patel