diff options
| -rw-r--r-- | src/target/riscv/riscv-013.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/target/riscv/riscv-013.c b/src/target/riscv/riscv-013.c index 26f8b20..a673265 100644 --- a/src/target/riscv/riscv-013.c +++ b/src/target/riscv/riscv-013.c @@ -1073,6 +1073,7 @@ static int scratch_reserve(struct target *target, riscv013_info_t *info = get_info(target); + /* Option 1: See if data# registers can be used as the scratch memory */ if (info->dataaccess == 1) { /* Sign extend dataaddr. */ scratch->hart_address = info->dataaddr; @@ -1089,6 +1090,7 @@ static int scratch_reserve(struct target *target, } } + /* Option 2: See if progbuf can be used as the scratch memory */ if (examine_progbuf(target) != ERROR_OK) return ERROR_FAIL; @@ -1096,13 +1098,15 @@ static int scratch_reserve(struct target *target, unsigned program_size = (program->instruction_count + 1) * 4; scratch->hart_address = (info->progbuf_address + program_size + alignment - 1) & ~(alignment - 1); - if ((size_bytes + scratch->hart_address - info->progbuf_address + 3) / 4 >= - info->progbufsize) { + if ((info->progbuf_writable == YNM_YES) && + ((size_bytes + scratch->hart_address - info->progbuf_address + 3) / 4 >= + info->progbufsize)) { scratch->memory_space = SPACE_DMI_PROGBUF; scratch->debug_address = (scratch->hart_address - info->progbuf_address) / 4; return ERROR_OK; } + /* Option 3: User-configured memory area as scratch RAM */ if (target_alloc_working_area(target, size_bytes + alignment - 1, &scratch->area) == ERROR_OK) { scratch->hart_address = (scratch->area->address + alignment - 1) & |