diff options
Diffstat (limited to 'src/flash/nor/tcl.c')
| -rw-r--r-- | src/flash/nor/tcl.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/src/flash/nor/tcl.c b/src/flash/nor/tcl.c index ab3b1eaf..e5e28011 100644 --- a/src/flash/nor/tcl.c +++ b/src/flash/nor/tcl.c @@ -674,7 +674,7 @@ COMMAND_HANDLER(handle_flash_read_bank_command) uint32_t length; size_t written; - if (CMD_ARGC != 4) + if (CMD_ARGC < 2 || CMD_ARGC > 4) return ERROR_COMMAND_SYNTAX_ERROR; struct duration bench; @@ -682,11 +682,31 @@ COMMAND_HANDLER(handle_flash_read_bank_command) struct flash_bank *p; int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p); + if (ERROR_OK != retval) return retval; - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], offset); - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], length); + offset = 0; + + if (CMD_ARGC > 2) + COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], offset); + + if (offset > p->size) { + LOG_ERROR("Offset 0x%8.8" PRIx32 " is out of range of the flash bank", + offset); + return ERROR_COMMAND_ARGUMENT_INVALID; + } + + length = p->size - offset; + + if (CMD_ARGC > 3) + COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], length); + + if (offset + length > p->size) { + LOG_ERROR("Length of %" PRIu32 " bytes with offset 0x%8.8" PRIx32 + " is out of range of the flash bank", length, offset); + return ERROR_COMMAND_ARGUMENT_INVALID; + } buffer = malloc(length); if (buffer == NULL) { @@ -966,10 +986,9 @@ static const struct command_registration flash_exec_command_handlers[] = { .name = "read_bank", .handler = handle_flash_read_bank_command, .mode = COMMAND_EXEC, - .usage = "bank_id filename offset length", - .help = "Read binary data from flash bank to file, " - "starting at specified byte offset from the " - "beginning of the bank.", + .usage = "bank_id filename [offset [length]]", + .help = "Read binary data from flash bank to file. Allow optional " + "offset from beginning of the bank (defaults to zero).", }, { .name = "verify_bank", |