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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/porting-guide.rst | 31 |
1 files changed, 6 insertions, 25 deletions
diff --git a/docs/porting-guide.rst b/docs/porting-guide.rst index ec613c84..3ea95a14 100644 --- a/docs/porting-guide.rst +++ b/docs/porting-guide.rst @@ -1179,25 +1179,6 @@ its own use. This function helps fulfill requirements 4 and 5 above. -Function : bl1\_init\_bl2\_mem\_layout() [optional] -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -:: - - Argument : meminfo *, meminfo * - Return : void - -BL1 needs to tell the next stage the amount of secure RAM available -for it to use. This information is populated in a ``meminfo`` -structure. - -Depending upon where BL2 has been loaded in secure RAM (determined by -``BL2_BASE``), BL1 calculates the amount of free memory available for BL2 to use. -BL1 also ensures that its data sections resident in secure RAM are not visible -to BL2. An illustration of how this is done in ARM standard platforms is given -in the **Memory layout on ARM development platforms** section in the -`Firmware Design`_. - Function : bl1\_plat\_prepare\_exit() [optional] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -1264,24 +1245,24 @@ Function : bl1\_plat\_handle\_pre\_image\_load() [optional] :: - Argument : void + Argument : unsigned int image_id Return : int This function can be used by the platforms to update/use image information -for BL2. This function is currently invoked in BL1 before loading BL2, -when LOAD\_IMAGE\_V2 is enabled. +corresponding to ``image_id``. This function is invoked in BL1, both in cold +boot and FWU code path, before loading the image. Function : bl1\_plat\_handle\_post\_image\_load() [optional] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ :: - Argument : void + Argument : unsigned int image_id Return : int This function can be used by the platforms to update/use image information -for BL2. This function is currently invoked in BL1 after loading BL2, -when LOAD\_IMAGE\_V2 is enabled. +corresponding to ``image_id``. This function is invoked in BL1, both in cold +boot and FWU code path, after loading and authenticating the image. Function : bl1\_plat\_fwu\_done() [optional] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |