48bfb88eb6
Firmware update(a.k.a FWU) feature is part of the TBB architecture. BL1 is responsible for carrying out the FWU process if platform specific code detects that it is needed. This patch adds support for FWU feature support in BL1 which is included by enabling `TRUSTED_BOARD_BOOT` compile time flag. This patch adds bl1_fwu.c which contains all the core operations of FWU, which are; SMC handler, image copy, authentication, execution and resumption. It also adds bl1.h introducing #defines for all BL1 SMCs. Following platform porting functions are introduced: int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size, unsigned int flags); This function can be used to add platform specific memory checks for the provided base/size for the given security state. The weak definition will invoke `assert()` and return -ENOMEM. __dead2 void bl1_plat_fwu_done(void *cookie, void *reserved); This function can be used to initiate platform specific procedure to mark completion of the FWU process. The weak definition waits forever calling `wfi()`. plat_bl1_common.c contains weak definitions for above functions. FWU process starts when platform detects it and return the image_id other than BL2_IMAGE_ID by using `bl1_plat_get_next_image_id()` in `bl1_main()`. NOTE: User MUST provide platform specific real definition for bl1_plat_mem_check() in order to use it for Firmware update. Change-Id: Ice189a0885d9722d9e1dd03f76cac1aceb0e25ed |
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| .. | ||
| arm | ||
| auth | ||
| console | ||
| delay_timer | ||
| io | ||
| ti/uart | ||