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author | bz <bz@FreeBSD.org> | 2014-08-16 14:14:29 +0000 |
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committer | bz <bz@FreeBSD.org> | 2014-08-16 14:14:29 +0000 |
commit | fdfedc3bb4681dabd75972f302f5898024d10a87 (patch) | |
tree | 9414832db50a14f715f3f945a944d936556bb1cc /sys/mips | |
parent | 1344b41f0b6c7d7948fa1ff68d4ad2a5ec47f36e (diff) | |
download | FreeBSD-src-fdfedc3bb4681dabd75972f302f5898024d10a87.zip FreeBSD-src-fdfedc3bb4681dabd75972f302f5898024d10a87.tar.gz |
MFC r264605:
Based on xlp_machdep.c and completed the list of options based on
boot/mips/beri/loader/metadata.c allow FDT configuration to set
command line options.
This leads to an interesting quesiton of future interactions with loader.
However for configurations without loader this allows bootverbose or boot
single user to be set by compiling a new kernel, which is good enough for
testing and debugging.
Reviewed by: rwatson
Sponsored by: DARPA/AFRL
Diffstat (limited to 'sys/mips')
-rw-r--r-- | sys/mips/beri/beri_machdep.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/mips/beri/beri_machdep.c b/sys/mips/beri/beri_machdep.c index 85dd153..870e461 100644 --- a/sys/mips/beri/beri_machdep.c +++ b/sys/mips/beri/beri_machdep.c @@ -131,6 +131,46 @@ platform_reset(void) __asm__ __volatile("wait"); } +#ifdef FDT +/* Parse cmd line args as env - copied from xlp_machdep. */ +/* XXX-BZ this should really be centrally provided for all (boot) code. */ +static void +_parse_bootargs(char *cmdline) +{ + char *n, *v; + + while ((v = strsep(&cmdline, " \n")) != NULL) { + if (*v == '\0') + continue; + if (*v == '-') { + while (*v != '\0') { + v++; + switch (*v) { + case 'a': boothowto |= RB_ASKNAME; break; + /* Someone should simulate that ;-) */ + case 'C': boothowto |= RB_CDROM; break; + case 'd': boothowto |= RB_KDB; break; + case 'D': boothowto |= RB_MULTIPLE; break; + case 'm': boothowto |= RB_MUTE; break; + case 'g': boothowto |= RB_GDB; break; + case 'h': boothowto |= RB_SERIAL; break; + case 'p': boothowto |= RB_PAUSE; break; + case 'r': boothowto |= RB_DFLTROOT; break; + case 's': boothowto |= RB_SINGLE; break; + case 'v': boothowto |= RB_VERBOSE; break; + } + } + } else { + n = strsep(&v, "="); + if (v == NULL) + setenv(n, "1"); + else + setenv(n, v); + } + } +} +#endif + void platform_start(__register_t a0, __register_t a1, __register_t a2, __register_t a3) @@ -142,7 +182,9 @@ platform_start(__register_t a0, __register_t a1, __register_t a2, char **envp = (char **)a2; unsigned int memsize = a3; #ifdef FDT + char buf[2048]; /* early stack supposedly big enough */ vm_offset_t dtbp; + phandle_t chosen; void *kmdp; #endif int i; @@ -180,6 +222,13 @@ platform_start(__register_t a0, __register_t a1, __register_t a2, while (1); if (OF_init((void *)dtbp) != 0) while (1); + + /* + * Get bootargs from FDT if specified. + */ + chosen = OF_finddevice("/chosen"); + if (OF_getprop(chosen, "bootargs", buf, sizeof(buf)) != -1) + _parse_bootargs(buf); #endif /* |