diff options
| author | Damien Le Moal <[email protected]> | 2018-12-21 09:13:37 +0900 |
|---|---|---|
| committer | Damien Le Moal <[email protected]> | 2018-12-21 15:09:13 +0900 |
| commit | aa68f0252f2a0749dee35bda309c397f79ae26a0 (patch) | |
| tree | 1edc7262e0c70f0a391abbc4c009e42f8a303aad /include/sbi/sbi_platform.h | |
| parent | f003787455709a1a6c69c1b6ab6a02d4d767c325 (diff) | |
Refine platform features control
Allow a platform to report its supported features in more details.
The new features defined are:
* SBI_PLATFORM_HAS_PMP
* SBI_PLATFORM_HAS_SCOUNTEREN
* SBI_PLATFORM_HAS_MCOUNTEREN
In addition, define the macro SBI_PLATFORM_DEFAULT_FEATURES as the set
of features that are generally expected to be supported by a Linux
capable platform.
Operations touching the features controlled with these falgs are not
executed if the platform does not set the corresponding feature flags.
Signed-off-by: Damien Le Moal <[email protected]>
Diffstat (limited to 'include/sbi/sbi_platform.h')
| -rw-r--r-- | include/sbi/sbi_platform.h | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/include/sbi/sbi_platform.h b/include/sbi/sbi_platform.h index 57b8e6be..39dfb499 100644 --- a/include/sbi/sbi_platform.h +++ b/include/sbi/sbi_platform.h @@ -13,10 +13,19 @@ #include <sbi/sbi_scratch.h> enum sbi_platform_features { - SBI_PLATFORM_HAS_MMIO_TIMER_VALUE = (1 << 0), - SBI_PLATFORM_HAS_HART_HOTPLUG = (1 << 1), + SBI_PLATFORM_HAS_MMIO_TIMER_VALUE = (1 << 0), + SBI_PLATFORM_HAS_HART_HOTPLUG = (1 << 1), + SBI_PLATFORM_HAS_PMP = (1 << 2), + SBI_PLATFORM_HAS_SCOUNTEREN = (1 << 3), + SBI_PLATFORM_HAS_MCOUNTEREN = (1 << 4), }; +#define SBI_PLATFORM_DEFAULT_FEATURES \ + (SBI_PLATFORM_HAS_MMIO_TIMER_VALUE | \ + SBI_PLATFORM_HAS_PMP | \ + SBI_PLATFORM_HAS_SCOUNTEREN | \ + SBI_PLATFORM_HAS_MCOUNTEREN) + struct sbi_platform { char name[64]; u64 features; @@ -48,17 +57,20 @@ struct sbi_platform { int (*system_shutdown)(u32 type); } __attribute__((packed)); -#define sbi_platform_ptr(__s) \ -((struct sbi_platform *)((__s)->platform_addr)) - -#define sbi_platform_thishart_ptr() \ -((struct sbi_platform *)(sbi_scratch_thishart_ptr()->platform_addr)) - +#define sbi_platform_ptr(__s) \ + ((struct sbi_platform *)((__s)->platform_addr)) +#define sbi_platform_thishart_ptr() \ + ((struct sbi_platform *)(sbi_scratch_thishart_ptr()->platform_addr)) #define sbi_platform_has_mmio_timer_value(__p) \ -((__p)->features & SBI_PLATFORM_HAS_MMIO_TIMER_VALUE) - + ((__p)->features & SBI_PLATFORM_HAS_MMIO_TIMER_VALUE) #define sbi_platform_has_hart_hotplug(__p) \ -((__p)->features & SBI_PLATFORM_HAS_HART_HOTPLUG) + ((__p)->features & SBI_PLATFORM_HAS_HART_HOTPLUG) +#define sbi_platform_has_pmp(__p) \ + ((__p)->features & SBI_PLATFORM_HAS_PMP) +#define sbi_platform_has_scounteren(__p) \ + ((__p)->features & SBI_PLATFORM_HAS_SCOUNTEREN) +#define sbi_platform_has_mcounteren(__p) \ + ((__p)->features & SBI_PLATFORM_HAS_MCOUNTEREN) static inline const char *sbi_platform_name(struct sbi_platform *plat) { |