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author | Sam Ravnborg <sam@ravnborg.org> | 2008-11-29 22:15:38 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:16 -0800 |
commit | 708d4f09647106d549c646dc459c7ccf2c237cc8 (patch) | |
tree | 23657862535d88fcb71bc416c51c27cd480a93c4 /arch/sparc/prom/bootstr_32.c | |
parent | 5e53879008b9acefe9f43498fd36db7376e08739 (diff) | |
download | linux-stable-708d4f09647106d549c646dc459c7ccf2c237cc8.tar.gz linux-stable-708d4f09647106d549c646dc459c7ccf2c237cc8.tar.bz2 linux-stable-708d4f09647106d549c646dc459c7ccf2c237cc8.zip |
sparc: prepare prom/ for unification
- rename files where sparc64 uses identical names to *_32.c
- refactor Makefile (but keep linking order)
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/prom/bootstr_32.c')
-rw-r--r-- | arch/sparc/prom/bootstr_32.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/sparc/prom/bootstr_32.c b/arch/sparc/prom/bootstr_32.c new file mode 100644 index 000000000000..916831da7e67 --- /dev/null +++ b/arch/sparc/prom/bootstr_32.c @@ -0,0 +1,59 @@ +/* + * bootstr.c: Boot string/argument acquisition from the PROM. + * + * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu) + */ + +#include <linux/string.h> +#include <asm/oplib.h> +#include <linux/init.h> + +#define BARG_LEN 256 +static char barg_buf[BARG_LEN] = { 0 }; +static char fetched __initdata = 0; + +char * __init +prom_getbootargs(void) +{ + int iter; + char *cp, *arg; + + /* This check saves us from a panic when bootfd patches args. */ + if (fetched) { + return barg_buf; + } + + switch(prom_vers) { + case PROM_V0: + cp = barg_buf; + /* Start from 1 and go over fd(0,0,0)kernel */ + for(iter = 1; iter < 8; iter++) { + arg = (*(romvec->pv_v0bootargs))->argv[iter]; + if(arg == 0) break; + while(*arg != 0) { + /* Leave place for space and null. */ + if(cp >= barg_buf + BARG_LEN-2){ + /* We might issue a warning here. */ + break; + } + *cp++ = *arg++; + } + *cp++ = ' '; + } + *cp = 0; + break; + case PROM_V2: + case PROM_V3: + /* + * V3 PROM cannot supply as with more than 128 bytes + * of an argument. But a smart bootstrap loader can. + */ + strlcpy(barg_buf, *romvec->pv_v2bootargs.bootargs, sizeof(barg_buf)); + break; + default: + break; + } + + fetched = 1; + return barg_buf; +} |