opensbi.git/platform/thead, branch v0.9

lib: sbi: Improve system reset platform operations

2020-12-01T11:40:31Z

To implement the SBI SRST extension, we need two platform operations for system reset: 1) system_reset_check() - This operation will check whether given reset type and reason are supported by the platform 2) system_reset() - This operation will do the actual platform system reset and it will not return if reset type and reason are supported by the platform This patch updates system reset related code everywhere as-per above. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Allow CLINT functions to be used for multiple CLINTs

2020-05-23T05:06:43Z

We extend CLINT cold init function to have a "struct clint_data *" parameter pointing to CLINT details. This allows platforms to use CLINT functions for multiple CLINT instances. When multiple CLINTs are present, the platform can also provide one of the CLINT as reference CLINT for other CLINTs. This will help CLINTs to sync their time value with reference CLINT using a time_delta computed in warm init function. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

platform: Move platform features to hart

2020-05-10T04:35:41Z

PMP & performance counters belong to a hart rather than a platform. In addition to that, these features enable reading/writing from a particular csr. Thus, they can be detected and set at runtime rather than compile time. Move PMP/MCOUNTEREN/SCOUNTEREN features to hart and detect them at runtime. Signed-off-by: Atish Patra Tested-by: Jonathan Balkind Reviewed-by: Anup Patel

include: sbi_platform: Combine reboot and shutdown into one callback

2020-04-27T09:05:29Z

We can achieve shutdown, cold reboot, and warm reboot using just one sbi_platform callback so we combine system_reboot() and system_shutdown() callbacks into one system_reset() callback. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

platform: thead/c910: Use HSM extension to boot secondary cores

2020-03-28T08:11:03Z

Remove custom vendor extension and use HSM extension to boot secondary cores Signed-off-by: Liu Yibin Reviewed-by: Anup Patel Reviewed-by: Bin Meng

platform: Clean up include header files

2020-03-18T04:01:39Z

Adjust the order of include header files in alphabetical order in platform codes. Also remove unnecessary inclusions. Signed-off-by: Bin Meng Reviewed-by: Atish Patra

platform: Use one unified per-HART stack size macro for all platforms

2020-03-14T03:44:00Z

As of today all platforms use 8KB of per-HART stack hence there is no need for each platform to define its own macro or use the magic number. Create one macro for all platforms. Platform still can use its own version if needed. Signed-off-by: Bin Meng Reviewed-by: Anup Patel

include: Remove disabled_hart_mask from sbi_platform

2020-03-11T10:00:12Z

The disabled_hard_mask in sbi_platform is only 64bits wide so we cannot disable a HART with HARTID > 63. To tackle this, we remove disabled_hart_mask and replace it with hart_disabled() platform callback. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

platform: thead/c910: Don't set plic/clint address in warm boot

2020-01-15T00:18:44Z

Since all harts share the same plic/clint address now, setting them during cold boot is just fine. Signed-off-by: Liu Yibin Reviewed-by: Anup Patel

platform: thead/c910: Don't enable L2 cache in warm boot

2020-01-15T00:16:38Z

Since all harts share the same L2 cache now, there's no need to Enable L2 cache in warm boot. Signed-off-by: Liu Yibin Reviewed-by: Anup Patel