opensbi.git/platform/generic/thead, branch master

platform: generic: Optimize extensions_init() to parse ISA extensions once

2026-06-12T10:38:29Z

Instead of parsing ISA extensions separately for each hart in the generic_extensions_init() function, it is better to parse ISA extensions for all available harts in the cold boot path. Also, this allows us to remove fdt_isa_bitmap from scratch space and directly initialize "extensions" in struct sbi_hart_features for each hart. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260521082625.1520870-3-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

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