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

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Implement a new Andes SBI call, which is to set up a NAPOT region
with given memory attributes.

Signed-off-by: Ben Zong-You Xie <ben717@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Ben Zong-You Xie
2024-07-23 15:57:27 +08:00
committed by Anup Patel
parent 4a72abb5f4
commit aa56084c4d
3 changed files with 138 additions and 5 deletions
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22
platform/generic/include/andes/andes_pma.h
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@@ -12,11 +12,15 @@
#define ANDES_PMA_GRANULARITY (1 << 12)
#define ANDES_PMACFG_ETYP_OFFSET 0
#define ANDES_PMACFG_ETYP_MASK (3 << ANDES_PMACFG_ETYP_OFFSET)
#define ANDES_PMACFG_ETYP_OFF (0 << ANDES_PMACFG_ETYP_OFFSET)
/* Naturally aligned power of 2 region */
#define ANDES_PMACFG_ETYP_NAPOT 3
#define ANDES_PMACFG_ETYP_NAPOT (3 << ANDES_PMACFG_ETYP_OFFSET)
#define ANDES_PMACFG_MTYP_OFFSET 2
/* Memory, Non-cacheable, Bufferable */
#define ANDES_PMACFG_MTYP_MEM_NON_CACHE_BUF (3 << 2)
#define ANDES_PMACFG_MTYP_MEM_NON_CACHE_BUF (3 << ANDES_PMACFG_MTYP_OFFSET)
/**
* struct andes_pma_region - Describes PMA regions
@@ -59,4 +63,18 @@ int andes_pma_setup_regions(const struct andes_pma_region *pma_regions,
*/
bool andes_sbi_probe_pma(void);
/**
* Set a NAPOT region with given memory attributes
* @param pa: Start address of the NAPOT region
* @param size: Size of the NAPOT region
* @param flags: Memory attributes set to the NAPOT region
*
* @return SBI_SUCCESS on success
* @return SBI_ERR_NOT_SUPPORTED if hardware does not support PPMA features
* @return SBI_ERR_INVALID_PARAM if the given region is overlapped with the
* region that has been set already
* @return SBI_ERR_FAILED if available entries have run out or setup fails
*/
int andes_sbi_set_pma(unsigned long pa, unsigned long size, u8 flags);
#endif /* _ANDES_PMA_H_ */