diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/porting-guide.md | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/docs/porting-guide.md b/docs/porting-guide.md index c7115903..db2bad83 100644 --- a/docs/porting-guide.md +++ b/docs/porting-guide.md @@ -150,11 +150,6 @@ file is found in [plat/fvp/include/platform_def.h]. Defines the total number of nodes in the affinity heirarchy at all affinity levels used by the platform. -* **#define : PRIMARY_CPU** - - Defines the `MPIDR` of the primary CPU on the platform. This value is used - after a cold boot to distinguish between primary and secondary CPUs. - * **#define : TZROM_BASE** Defines the base address of secure ROM on the platform, where the BL1 binary @@ -360,6 +355,17 @@ requires them. This function fulfills requirement 2 above. +### Function : platform_is_primary_cpu() [mandatory] + + Argument : unsigned long + Return : unsigned int + +This function identifies a CPU by its `MPIDR`, which is passed as the argument, +to determine whether this CPU is the primary CPU or a secondary CPU. A return +value of zero indicates that the CPU is not the primary CPU, while a non-zero +return value indicates that the CPU is the primary CPU. + + ### Function : platform_mem_init() [mandatory] Argument : void @@ -398,17 +404,6 @@ maximum of 4 CPUs: cluster_id = 8-bit value in MPIDR at affinity level 1 -### Function : platform_is_primary_cpu() - - Argument : unsigned long - Return : unsigned int - -This function identifies a CPU by its `MPIDR`, which is passed as the argument, -to determine whether this CPU is the primary CPU or a secondary CPU. A return -value of zero indicates that the CPU is not the primary CPU, while a non-zero -return value indicates that the CPU is the primary CPU. - - ### Function : platform_set_stack() Argument : unsigned long |