opensbi.git/firmware/fw_payload.S, branch master

firmware: Add relocatable FW_PAYLOAD_FDT_ADDR

2024-02-24T10:27:59Z

The fw_payload.bin has the same issue as described in previous patch. But only FW_PAYLOAD_FDT_ADDR is affected. Add FW_PAYLOAD_FDT_OFFSET to identify relocatable payload fdt address. Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

firmware: Use lla to access all global symbols

2021-03-19T09:27:45Z

When OpenSBI is compiled as fPIE mode, the assembler will translate "la" to GOT reference pattern. It will cause to cost an additional load instruction when obtaining the symbol address. However, if the symbol locates within the positive or negative 2GB region, we can use "lla" instead of "la" to avoid unneeded GOT references. This patch assumes that the OpenSBI image excluding the payload does not exceed 2GB. Based on this assumption, all "la" instructions are replaced by "lla" to avoid performance degradation when compiling as fPIE mode. Signed-off-by: Vincent Chen Reviewed-by: Anup Patel

firmware: Remove FW_PAYLOAD_FDT_PATH compile-time option

2020-10-18T04:59:59Z

The FW_PAYLOAD_FDT_PATH compile-time option is replaced by FW_FDT_PATH compile-time option which is more flexible and common across all OpenSBI firmwares. This patch removes FW_PAYLOAD_FDT_PATH and updates related documentation to use FW_FDT_PATH. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

firmware: Fix placement of .align directives

2020-01-10T04:00:27Z

Move the .align directives after switching the section. We want to align the start of the current section, not the end of the previous section. This also obsoletes the misguided workaround of disabling relaxation. Signed-off-by: Andreas Schwab Reviewed-by: Anup Patel

firmware: Improve comments for fw_prev_arg1() and fw_next_arg1()

2019-12-27T03:24:24Z

The state of a0, a1, and a2 registers in fw_prev_arg1() and fw_next_arg1() is same as passed by previous booting stage so we add this info in comments for both these functions. Signed-off-by: Anup Patel

firmware: Return real DTB address when FW_xyz_FDT_ADDR is not defined

2019-12-27T03:18:17Z

Function fw_next_arg1 in firmware/fw_jump.S:59 and firmware/fw_payload.S:63 should return real dtb address(if specified in a1) in a0, in case we don't want to specify FW_xyz_FDT_ADDR when compiling. Signed-off-by: Liu Yibin Reviewed-by: Anup Patel

firmware: Add preferred boot HART field in struct fw_dynamic_info

2019-11-15T12:11:18Z

It has been reported that link address range of previous booting stage (such as U-Boot SPL) can overlap the link address rage of FW_DYNAMIC. This means self-relocation in FW_DYNAMIC can potentially corrupt previous booting stage if any of the secondary HART enter FW_DYNAMIC before primary HART. To tackle this, we add preferred boot HART field (i.e boot_hart) in struct fw_dyanmic_info. We use this field to force secondary HARTs into relocation wait loop till preferred/primary boot HART enters FW_DYNAMIC completes self-relocation. If preferred boot HART is not available then we fall back to relocation lottery approach. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

firmware: Fix compile error for FW_PAYLOAD with latest GCC binutils

2019-10-28T14:41:42Z

We get following compile error for FW_PAYLOAD with latest GCC binutils: fw_payload.o(.text+0x1961): 15 bytes required for alignment to 16-byte boundary, but only 14 present Further investigating, it turn-out to be a known issue with RISC-V GCC binutils. (Refer, https://github.com/riscv/riscv-gnu-toolchain/issues/298) As a work-around, we disable relaxation when including DTB and PAYLOAD binary in fw_payload.S. Reported-by: David Abdurachmanov Signed-off-by: Anup Patel Tested-by: David Abdurachmanov 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

firmware: Ensure the payloads are 4 bit alligned

2019-02-15T04:26:47Z

We expect the payloads to be 4 bit alligned as we later AND them with ~0xf. As most of the addresses are manually specified we don't really need this, but better to be over cautious. Signed-off-by: Alistair Francis