opensbi.git/platform/generic/include, branch v1.7

platform: generic: mips: add P8700

2025-06-14T16:14:11Z

Extend generic platform to support MIPS P8700. Signed-off-by: Chao-ying Fu Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250522212141.3198-2-cfu@mips.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: Allow replacing platform operations

2025-04-23T07:02:50Z

Currently the generic platform follows the middleware pattern: it implements the sbi_platform hooks, while providing its own set of hooks for further customization. This has a few disadvantages: each location where customization is needed requires a separate platform_override hook, including places where the generic function does nothing except forward to a platform_override hook, and the extra layer of function pointers adds runtime overhead. Let's restructure the generic platform to follow the helper pattern. Allow platform overrides to treat the generic platform as a template, adding or replacing the sbi_platform_operations as needed. Export the generic implementations, so they can be called as helpers from inside the override functions. With this pattern, the platform_override function pointers are replaced by direct calls, and the forwarding functions can be removed. The forwarding functions are not exported, since there is no reason for an override to call them. generic_vendor_ext_check() must be rewritten, since now there is a new way to override vendor_ext_provider. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-6-samuel.holland@sifive.com Signed-off-by: Anup Patel

platform: generic: Add an init hook matching fdt_driver

2025-04-23T07:02:50Z

In preparation for reusing the fdt_driver code to match platform overrides, add a new .init hook matching the type signature from fdt_driver. This hook replaces the existing .fw_init hook, since it is called at roughly the same place in the init process. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-5-samuel.holland@sifive.com Signed-off-by: Anup Patel

platform: generic: andes: Remove inline definitions

2025-04-23T07:02:50Z

The addresses of these functions are used to set function pointers in struct platform_override, so it is not valid for them to be inline. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250325234342.711447-2-samuel.holland@sifive.com Signed-off-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: Constify FDT pointers in fw_platform_init()

2024-08-24T07:32:51Z

Indicate that none of these functions modify the devicetree by constifying the parameter type. Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

platform: generic: andes: add a new Andes SBI call to free a PMA entry

2024-08-23T08:40:30Z

Add a new Andes SBI call to free a PMA entry, and reset the memory attributes for the corresponding NAPOT region. Signed-off-by: Ben Zong-You Xie Reviewed-by: Anup Patel