opensbi.git/firmware/fw_base.S, 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: 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

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

firmware: Introduce "options" in "struct sbi_scratch"

2019-03-29T10:19:11Z

Introduce "options" in "struct sbi_scratch" and firmware can update it based on optional compile time flags before calling sbi_init(). Signed-off-by: Bin Meng

firmware: Move scratch setup to _start instead of _start_warm

2019-03-14T15:13:09Z

Scratch space setup needs to be done once for reboot for each hart. _start_warm may be called several times if hart hotplug is implemented. Move scratch space setup to the beginning so that it is done only once. Signed-off-by: Atish Patra

lib: Create a sbi_ipi_data structure

2019-03-10T15:38:21Z

Create a sbi_ipi_data structure that holds unpacked IPI information. At the same time remove ipi_type from the sbi_scratch struct and use a fixed offset to access it. This structure fits in behind the sbi_scratch structure. This fixes https://github.com/riscv/opensbi/issues/81 Signed-off-by: Alistair Francis

firmware: Reset all registers and flush icache

2019-03-07T02:37:18Z

A warm reset using reset button may put icache and registers in non-coherent state. Flush the icache and reset all registers for every hart. Signed-off-by: Atish Patra