opensbi.git/firmware, branch v1.6

Makefile: enable --gc-sections

2024-11-06T10:59:39Z

The --gc-sections option enables the linker to perform garbage collection of unreferenced code and data, thereby reducing the binary size. The -ffunction-sections option will place each function into a separate section, so it is necessary to add .text.* to the linker script. Signed-off-by: Kele Zhang Signed-off-by: Yuan Tan Signed-off-by: Zhangjin Wu Reviewed-by: Bin Meng Reviewed-by: Xiang W Reviewed-by: Anup Patel

lib: sbi: add Smdbltrp ISA extension support

2024-10-25T18:30:12Z

Add support for the Smdbltrp[1] ISA extension. First thing to do is clearing MDT on entry after setting the first MTVEC (since MDT is reset to 1). Additionally, during trap handling, clear MDT once all critical CSRs have been saved and in return path, restore MSTATUS/H before restoring MEPC to avoid taking another trap which would clobber it. Link: https://github.com/riscv/riscv-double-trap/releases/download/v0.56/riscv-double-trap.pdf [1] Signed-off-by: Clément Léger Reviewed-by: Samuel Holland

firmware: fw_base.S: fix multi-core boot bug.

2024-09-27T05:35:37Z

In a multi-core startup scenario, if both _try_lottery and _wait_for_boot_hart use the data in the _boot_status address, when a CPU enters OpenSBI later than boot hart set the _boot_status to BOOT_STATUS_BOOT_HART_DONE, the CPU will modify _boot_status to 1 by amoswap.w and will never be awakened in _wait_for_boot_hart. So let _try_lottery and _boot_status use data from two addresses. Fixes: 8151105af5e4 ("firmware: fw_base.S: Remove _relocate_lottery") Signed-off-by: dong.yang Reviewed-by: Xing Xiaoguang Reviewed-by: Xiang W Reviewed-by: Anup Patel

include: sbi: Store the hart index in struct sbi_scratch

2024-09-25T06:30:47Z

This is a more efficient way to get the index of the current hart than calling a function to loop through the hartindex -> hartid lookup table. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

firmware: Simplify FDT header endianness conversion

2024-09-25T04:16:35Z

Reduce the code size by using single-byte loads instead of bit manipulation. This method also does the right thing on (hypothetical) big-endian systems. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

firmware: Bring back FW_TEXT_START as an optional parameter

2024-05-23T05:20:23Z

Bring back FW_TEXT_START as an optional parameter to allow users explicitly specify compile time address for loading debug symbols. When not specified, the FW_TEXT_START is assumed to be 0. Fixes: d4d2582eef7a ("firmware: remove FW_TEXT_START") Signed-off-by: Anup Patel Tested-by: Clément Léger

firmware: remove FW_TEXT_START

2024-04-10T04:20:24Z

Now opensbi can run at any address via dynamic relocation. We can remove FW_TEXT_START. Signed-off-by: Xiang W Reviewed-by: Anup Patel Tested-by: Anup Patel

firmware: remove copy-base relocation

2024-04-05T09:35:25Z

Remove copy-base relocations that are no longer needed. Signed-off-by: Xiang W Reviewed-by: Samuel Holland Tested-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Introduce trap context

2024-03-19T06:01:22Z

Club the struct sbi_trap_regs and struct sbi_trap_info a new struct sbi_trap_context (aka trap context) which must be saved by low-level trap handler before calling sbi_trap_handler(). To track nested traps, the struct sbi_scratch points to the current trap context and the trap context has pointer to pervious context of previous trap. Signed-off-by: Anup Patel Reviewed-by: Samuel Holland Tested-by: Samuel Holland

include: sbi: Add trap_context pointer in struct sbi_scratch

2024-03-19T06:01:20Z

To track nested traps, the struct sbi_scratch needs a pointer the current trap context so add trap_context pointer in struct sbi_context. Signed-off-by: Anup Patel Reviewed-by: Samuel Holland Tested-by: Samuel Holland