merge opensbi v1.7 dev #4
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Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
The Sscofpmf spec does not define overflow interrupts for cycles & instructions [1]. But this is indispensable in performance profiling. Xuantie added registers mhpmevent0 and mhpmevent2, with addresses 0x7E0 and 0x7E1 respectively, which are used to configure cycles & instructions. At the same time, mxstatus[8] is newly defined as ofint to control whether the cycles and instructions events of HPCP can generate interrupt 13 (lcofip). When it is 1, an interrupt can be generated, and when it is 0, an interrupt cannot be generated. This patch is used to support the above functions. [1] riscvarchive/riscv-count-overflow#5 Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
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We have mailing list based patch review so it would be great if you can send these patchs to OpenSBI mailing list. You need to join OpenSBI mailing list using following link Make sure you use "git send-email" to send the patches. Thanks for your contribution to OpenSBI project. |
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This is an example implementation of power management using C907 PMC, which mainly implements sbi_hsm_device, sbi_system_reset_device and sbi_system_suspend_device defined by opensbi.
DTS example:
```
{
model = "xuantie,dummy";
compatible = "xuantie,dummy";
pmc: xuantie_pmc@26900000 {
compatible = "xuantie,pmc";
status = "okay";
reg = <0x00000000 0x26900000 0x00000000 0x00001000>;
};
}
```
Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
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