This patch introduces support for command line arguments to Plan 9. Plan 9 generally dedicates a small region of kernel memory (known as CONFADDR) for runtime configuration. A new environment variable named confaddr was introduced to indicate this location when copying arguments.
Signed-off-by: Steven Stallion sstallion@gmail.com --- common/cmd_bootm.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index 05130b6..5c62271 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -1533,6 +1533,7 @@ static int do_bootm_plan9(int flag, int argc, char * const argv[], bootm_headers_t *images) { void (*entry_point)(void); + char *s;
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) return 1; @@ -1544,6 +1545,24 @@ static int do_bootm_plan9(int flag, int argc, char * const argv[], } #endif
+ if ((s = getenv("confaddr")) != NULL) { + char *confaddr = (char *)simple_strtoul(s, NULL, 16); + + if (argc > 2) { + int i; + + s = confaddr; + for (i = 2; i < argc; i++) { + if (i > 2) + *s++ = '\n'; + strcpy(s, argv[i]); + s += strlen(argv[i]); + } + } else if ((s = getenv("bootargs")) != NULL) { + strcpy(confaddr, s); + } + } + entry_point = (void (*)(void))images->ep;
printf("## Transferring control to Plan 9 (at address %08lx) ...\n",