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lib: Add platform features in boot time print

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We have now clear distinction between platform and hart features.
Modify the boot print messages to print platform features in a string
format. In the process, this patch moved relatively larger functions
to its own file from platform.h header file.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Tested-by: Jonathan Balkind <jbalkind@cs.princeton.edu>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Atish Patra
2020-05-09 16:47:31 -07:00
committed by Anup Patel
parent ec0d2a7d7d
commit 1f235ec47f
4 changed files with 158 additions and 27 deletions
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67
include/sbi/sbi_platform.h
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@@ -56,6 +56,9 @@ enum sbi_platform_features {
SBI_PLATFORM_HAS_MFAULTS_DELEGATION = (1 << 2),
/** Platform has custom secondary hart booting support */
SBI_PLATFORM_HAS_HART_SECONDARY_BOOT = (1 << 3),
/** Last index of Platform features*/
SBI_PLATFORM_HAS_LAST_FEATURE = SBI_PLATFORM_HAS_HART_SECONDARY_BOOT,
};
/** Default feature set for a platform */
@@ -223,6 +226,29 @@ struct sbi_platform {
#define sbi_platform_has_hart_secondary_boot(__p) \
((__p)->features & SBI_PLATFORM_HAS_HART_SECONDARY_BOOT)
/**
* Get HART index for the given HART
*
* @param plat pointer to struct sbi_platform
* @param hartid HART ID
*
* @return 0 <= value < hart_count for valid HART otherwise -1U
*/
u32 sbi_platform_hart_index(const struct sbi_platform *plat, u32 hartid);
/**
* Get the platform features in string format
*
* @param plat pointer to struct sbi_platform
* @param features_str pointer to a char array where the features string will be
* updated
* @param nfstr length of the features_str. The feature string will be truncated
* if nfstr is not long enough.
* @return the features value currently set for the given platform
*/
int sbi_platform_get_features_str(const struct sbi_platform *plat,
char *features_str, int nfstr);
/**
* Get name of the platform
*
@@ -237,6 +263,21 @@ static inline const char *sbi_platform_name(const struct sbi_platform *plat)
return "Unknown";
}
/**
* Get the platform features
*
* @param plat pointer to struct sbi_platform
*
* @return the features value currently set for the given platform
*/
static inline unsigned long sbi_platform_get_features(
const struct sbi_platform *plat)
{
if (plat)
return plat->features;
return 0;
}
/**
* Get platform specific tlb range flush maximum value. Any request with size
* higher than this is upgraded to a full flush.
@@ -281,32 +322,6 @@ static inline u32 sbi_platform_hart_stack_size(const struct sbi_platform *plat)
return 0;
}
/**
* Get HART index for the given HART
*
* @param plat pointer to struct sbi_platform
* @param hartid HART ID
*
* @return 0 <= value < hart_count for valid HART otherwise -1U
*/
static inline u32 sbi_platform_hart_index(const struct sbi_platform *plat,
u32 hartid)
{
u32 i;
if (!plat)
return -1U;
if (plat->hart_index2id) {
for (i = 0; i < plat->hart_count; i++) {
if (plat->hart_index2id[i] == hartid)
return i;
}
return -1U;
}
return hartid;
}
/**
* Check whether given HART is invalid
*