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Fix TSP_STD_FID macro

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Enforce valid FID input in TSP_STD_FID and TSP_FAST_FID macros.
Also remove an undefined behavior by using unsigned literals.

Change-Id: Id37e908da861980a4eaa3a70b37a729f416ce272
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
This commit is contained in:
Douglas Raillard 2016-12-12 14:37:34 +00:00
parent 67748e4827
commit 5388a58498
1 changed files with 9 additions and 10 deletions
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19
include/bl32/tsp/tsp.h
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@ -65,22 +65,21 @@
#define TSP_DIV 0x2003
#define TSP_HANDLE_SEL1_INTR_AND_RETURN 0x2004
/*
* Generate function IDs for TSP services to be used in SMC calls, by
* appropriately setting bit 31 to differentiate standard and fast SMC calls
*/
#define TSP_STD_FID(fid) ((fid) | 0x72000000 | (0 << 31))
#define TSP_FAST_FID(fid) ((fid) | 0x72000000 | (1 << 31))
/* SMC function ID to request a previously preempted std smc */
#define TSP_FID_RESUME TSP_STD_FID(0x3000)
/*
* Identify a TSP service from function ID filtering the last 16 bits from the
* SMC function ID
*/
#define TSP_BARE_FID(fid) ((fid) & 0xffff)
/*
* Generate function IDs for TSP services to be used in SMC calls, by
* appropriately setting bit 31 to differentiate standard and fast SMC calls
*/
#define TSP_STD_FID(fid) ((TSP_BARE_FID(fid) | 0x72000000))
#define TSP_FAST_FID(fid) ((TSP_BARE_FID(fid) | 0x72000000) | (1u << 31))
/* SMC function ID to request a previously preempted std smc */
#define TSP_FID_RESUME TSP_STD_FID(0x3000)
/*
* Total number of function IDs implemented for services offered to NS clients.
* The function IDs are defined above