Djam/arm-trusted-firmware
1
0
Fork 0
mirror of https://github.com/ARM-software/arm-trusted-firmware.git synced 2025-04-19 11:04:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge pull request #411 from jcastillo-arm/jc/plat_bl1_exit

Browse source 
Jc/plat bl1 exit
This commit is contained in:
danh-arm 2015-10-21 12:12:12 +01:00
commit 7b66a0269e
3 changed files with 23 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
bl1/aarch64/bl1_exceptions.S
View file

@ -207,6 +207,8 @@ func smc_handler64
bl disable_mmu_icache_el3 bl disable_mmu_icache_el3
tlbi alle3 tlbi alle3
bl bl1_plat_prepare_exit
ldp x6, x7, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x30)] ldp x6, x7, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x30)]
ldp x4, x5, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x20)] ldp x4, x5, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x20)]
ldp x2, x3, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x10)] ldp x2, x3, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x10)]

11
docs/porting-guide.md
View file

@ -788,6 +788,17 @@ the entry point set by loader and also set the security state and SPSR which
represents the entry point system state for BL2. represents the entry point system state for BL2.
### Function : bl1_plat_prepare_exit() [optional]
Argument : void
Return : void
This function is called prior to exiting BL1 in response to the `RUN_IMAGE_SMC`
request raised by BL2. It should be used to perform platform specific clean up
or bookkeeping operations before transferring control to the next image. This
function runs with MMU disabled.
3.2 Boot Loader Stage 2 (BL2) 3.2 Boot Loader Stage 2 (BL2)
----------------------------- -----------------------------

10
plat/common/aarch64/platform_helpers.S
View file

@ -37,6 +37,7 @@
.weak plat_crash_console_putc .weak plat_crash_console_putc
.weak plat_reset_handler .weak plat_reset_handler
.weak plat_disable_acp .weak plat_disable_acp
.weak bl1_plat_prepare_exit
#if !ENABLE_PLAT_COMPAT #if !ENABLE_PLAT_COMPAT
.globl platform_get_core_pos .globl platform_get_core_pos
@ -111,3 +112,12 @@ endfunc plat_reset_handler
func plat_disable_acp func plat_disable_acp
ret ret
endfunc plat_disable_acp endfunc plat_disable_acp
/* -----------------------------------------------------
* void bl1_plat_prepare_exit(void);
* Called before exiting BL1. Default: do nothing
* -----------------------------------------------------
*/
func bl1_plat_prepare_exit
ret
endfunc bl1_plat_prepare_exit