At present the sandbox executable is assumed to be arg[0] but this only works for a single jump (e.g. from SPL to U-Boot). Add a new arg to solve this issue, along with a detailed comment.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
arch/sandbox/cpu/start.c | 30 ++++++++++++++++++++++++++++++ arch/sandbox/include/asm/state.h | 3 ++- 2 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c index 642be164a39..622df41f54c 100644 --- a/arch/sandbox/cpu/start.c +++ b/arch/sandbox/cpu/start.c @@ -244,6 +244,36 @@ static int sandbox_cmdline_cb_jump(struct sandbox_state *state, } SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
+static int sandbox_cmdline_cb_program(struct sandbox_state *state, + const char *arg) +{ + /* + * Record the program name to use when jumping to future phases. This + * is the original executable which holds all the phases. We need to + * use this instead of argv[0] since each phase is started by + * extracting a particular binary from the full program, then running + * it. Therefore in that binary, argv[0] contains only the + * current-phase executable. + * + * For example, sandbox TPL may be started using image file: + * + * ./image.bin + * + * but then TPL needs to run VPL, which it does by extracting the VPL + * image from the image.bin file. + * + * ./temp-vpl + * + * When VPL runs it needs access to the original image.bin so it can + * extract the next phase (SPL). This works if we use '-f image.bin' + * when starting the original image.bin file. + */ + state->prog_fname = arg; + + return 0; +} +SANDBOX_CMDLINE_OPT_SHORT(program, 'p', 1, "U-Boot program name"); + static int sandbox_cmdline_cb_memory(struct sandbox_state *state, const char *arg) { diff --git a/arch/sandbox/include/asm/state.h b/arch/sandbox/include/asm/state.h index fd42daad51c..49ea483d332 100644 --- a/arch/sandbox/include/asm/state.h +++ b/arch/sandbox/include/asm/state.h @@ -71,7 +71,8 @@ struct sandbox_state { const char *parse_err; /* Error to report from parsing */ int argc; /* Program arguments */ char **argv; /* Command line arguments */ - const char *jumped_fname; /* Jumped from previous U_Boot */ + const char *jumped_fname; /* Jumped from previous U-Boot */ + const char *prog_fname; /* U-Boot executable filename */ uint8_t *ram_buf; /* Emulated RAM buffer */ unsigned long ram_size; /* Size of RAM buffer */ const char *ram_buf_fname; /* Filename to use for RAM buffer */