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Diffstat (limited to 'docs/porting-guide.md')
| -rw-r--r-- | docs/porting-guide.md | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/docs/porting-guide.md b/docs/porting-guide.md index eb3b86d9..3070775a 100644 --- a/docs/porting-guide.md +++ b/docs/porting-guide.md @@ -218,6 +218,21 @@ be defined as well: the secure memory identified by `TSP_SEC_MEM_BASE` and `TSP_SEC_MEM_SIZE` constants. +If the platform port uses the IO storage framework, the following constants +must also be defined: + +* **#define : MAX_IO_DEVICES** + + Defines the maximum number of registered IO devices. Attempting to register + more devices than this value using `io_register_device()` will fail with + IO_RESOURCES_EXHAUSTED. + +* **#define : MAX_IO_HANDLES** + + Defines the maximum number of open IO handles. Attempting to open more IO + entities than this value using `io_open()` will fail with + IO_RESOURCES_EXHAUSTED. + The following constants are optional. They should be defined when the platform memory layout implies some image overlaying like on FVP. |