opensbi.git/firmware, branch v0.4

firmware: For no relocation skip two stage wait for secondary HARTs

2019-07-01T03:24:13Z

When relocation is not required (i.e. _load_start == _link_start), we can skip two stage wait for secondary HARTs. This means secondary HARTs can skip the _wait_relocate_copy_done() loop and directly jump to the _wait_for_boot_hart() loop when no relocation not required. Signed-off-by: Anup Patel

firmware: Handle overlapping load and link addresses in relocation

2019-06-24T04:09:18Z

The old code may corrupt the code of the waiting hart hence this patch keeps waiting HART within relocation code range at time of relocation. Signed-off-by: Xiang W Acked-by: Anup Patel

firmware: Handle overlapping load and link addresses in relocation

2019-06-17T06:23:42Z

This patch extends relocation to handle overlapping load and link addresses. The updated relocation will work fine in most cases except when the relocate copy loop itself falls in overlapping load and link addresses. Signed-off-by: Xiang W Signed-off-by: Anup Patel

firmware: Relocate when load address is not equal to link address

2019-06-12T12:26:28Z

This patch extends fw_base to relocate to link address whenever firmware load address is not equal to link address. The relocation will not work when load start to load end overlap link start to link end. Signed-off-by: Anup Patel Tested-by: Lukas Auer

firmware: add missing linker sections to fw_base.ldS

2019-06-12T12:13:47Z

The linker sections .sdata and .sbss are missing from the linker script fw_base.ldS. Add them to the .data and .bss sections. On current builds, most variables are in the .sbss section. They are not correctly initialized to zero, because they are not within the boundaries indicated by _bss_start and _bss_end. Currently, this does not cause any issues, however with relocation support lock-ups may occur due to incorrectly initialized lock variables. Signed-off-by: Lukas Auer Acked-by: Anup Patel

firmware: Add fw_dynamic firmware

2019-05-10T06:56:22Z

This patch provides first-cut implementation of fw_dynamic firmware. As compared to fw_jump and fw_payload, the fw_dynamic obtains next address, next mode and OpenSBI options from struct fw_dynamic_info. The previous booting stage can create struct fw_dynamic_info in memory and pass address of struct fw_dynamic_info in 'a2' register. Also, the struct fw_dynamic_info has versioning as well so changes to the struct fw_dynamic_info can be done in a backward compatible manner. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

firmware: Allow firmwares to provide next mode and options

2019-05-10T06:56:22Z

This patch extends existing firmwares (i.e. fw_jump and fw_payload) to explicitly provide next mode and options to fw_base. We also introduce fw_save_info() which is called by fw_base very early on boot HART. This function can be used by existing firmwares (i.e. fw_jump and fw_payload) to save information passed by previous booting stage. Overall, this is a preparatory patch for implementing fw_dynamic. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Atish Patra

all: run clang-format and update checked-in files

2019-04-24T04:19:46Z

Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson

TOP: Allow building platform out-of-tree

2019-04-09T03:44:09Z

This patch extends our current build-system for building platform sources which are not part of OpenSBI sources. For example: Let's say we have out-of-tree ABC platform sources. We place these sources under /ABC directory along with its config.mk and objects.mk. To build out-of-tree ABC platform from OpenSBI directory: $ make PLATFORM_DIR=/ABC OR $ make PLATFORM_DIR= PLATFORM=ABC To build out-of-tree ABC platform from /ABC directory: $ make PLATFORM_DIR=/ABC -C OR $ make PLATFORM_DIR= PLATFORM=ABC -C Signed-off-by: Anup Patel Reviewed-by: Alistair Francis

firmware: Fix source fdt alignment

2019-04-04T03:40:28Z

When I tried to start opensbi with coreboot, I found that aligning to a 16-byte boundary would make a copy error. Corrected to align to an machine word length boundary. Signed-off-by: Xiang Wang