forked from Mirrors/opensbi
033e0e2353
The existing sbi_dbtr_shmem_entry has a size of 5 * XLEN with the final
entry being idx. This is in contrast to the SBI v3.0-rc7 Chapter 19.
Debug Triggers Extension [0] where idx and trig_state share the same
offset (0) in shared memory, with a total size of 4 * XLEN for all the
SBI calls.
Replace struct with union to match memory layout described in SBI.
[0] https://github.com/riscv-non-isa/riscv-sbi-doc/tree/v3.0-rc7/src/ext-debug-triggers.adoc
Fixes: 97f234f15c ("lib: sbi: Introduce the SBI debug triggers extension support")
Signed-off-by: Jesse Taube <jesse@rivosinc.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Tested-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Link: https://lore.kernel.org/r/20250604135225.842241-1-jesse@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>