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| author | Vikram Kanigiri <vikram.kanigiri@arm.com> | 2014-05-15 18:27:15 +0100 |
|---|---|---|
| committer | Vikram Kanigiri <vikram.kanigiri@arm.com> | 2014-05-22 15:43:23 +0100 |
| commit | 29fb905d5f36a415a170a4bffeadf13b5f084345 (patch) | |
| tree | 4cf20542c5219393010b1285dd88de5b0e2a519e /bl2/aarch64 | |
| parent | 23ff9baa7e01eac3a451f2e8ed768c9b90d3567a (diff) | |
Rework handover interface between BL stages
This patch reworks the handover interface from: BL1 to BL2 and
BL2 to BL3-1. It removes the raise_el(), change_el(), drop_el()
and run_image() functions as they catered for code paths that were
never exercised.
BL1 calls bl1_run_bl2() to jump into BL2 instead of doing the same
by calling run_image(). Similarly, BL2 issues the SMC to transfer
execution to BL3-1 through BL1 directly. Only x0 and x1 are used
to pass arguments to BL31. These arguments and parameters for
running BL3-1 are passed through a reference to a
'el_change_info_t' structure. They were being passed value in
general purpose registers earlier.
Change-Id: Id4fd019a19a9595de063766d4a66295a2c9307e1
Diffstat (limited to 'bl2/aarch64')
| -rw-r--r-- | bl2/aarch64/bl2_entrypoint.S | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/bl2/aarch64/bl2_entrypoint.S b/bl2/aarch64/bl2_entrypoint.S index 4f7565f4..09eadff2 100644 --- a/bl2/aarch64/bl2_entrypoint.S +++ b/bl2/aarch64/bl2_entrypoint.S @@ -46,7 +46,6 @@ func bl2_entrypoint */ mov x20, x0 mov x21, x1 - mov x22, x2 /* --------------------------------------------- * This is BL2 which is expected to be executed @@ -110,7 +109,6 @@ func bl2_entrypoint * --------------------------------------------- */ mov x0, x21 - mov x1, x22 bl bl2_early_platform_setup bl bl2_plat_arch_setup |