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[PATCH] s390: early parameter parsing

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Use common code parser for early parameters instead of our own.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Heiko Carstens 2006-03-24 03:15:15 -08:00 committed by Linus Torvalds
parent 495a5b45ac
commit 596852967c
1 changed files with 45 additions and 63 deletions
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108
arch/s390/kernel/setup.c
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@ -78,8 +78,6 @@ extern int _text,_etext, _edata, _end;
#include <asm/setup.h>
static char command_line[COMMAND_LINE_SIZE] = { 0, };
static struct resource code_resource = {
.name = "Kernel code",
.start = (unsigned long) &_text,
@ -335,63 +333,38 @@ add_memory_hole(unsigned long start, unsigned long end)
}
}
static void __init
parse_cmdline_early(char **cmdline_p)
static int __init early_parse_mem(char *p)
{
memory_end = memparse(p, &p);
return 0;
}
early_param("mem", early_parse_mem);
/*
* "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes
*/
static int __init early_parse_ipldelay(char *p)
{
char c = ' ', cn, *to = command_line, *from = COMMAND_LINE;
unsigned long delay = 0;
/* Save unparsed command line copy for /proc/cmdline */
memcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
delay = simple_strtoul(p, &p, 0);
for (;;) {
/*
* "mem=XXX[kKmM]" sets memsize
*/
if (c == ' ' && strncmp(from, "mem=", 4) == 0) {
memory_end = simple_strtoul(from+4, &from, 0);
if ( *from == 'K' || *from == 'k' ) {
memory_end = memory_end << 10;
from++;
} else if ( *from == 'M' || *from == 'm' ) {
memory_end = memory_end << 20;
from++;
}
}
/*
* "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes
*/
if (c == ' ' && strncmp(from, "ipldelay=", 9) == 0) {
delay = simple_strtoul(from+9, &from, 0);
if (*from == 's' || *from == 'S') {
delay = delay*1000000;
from++;
} else if (*from == 'm' || *from == 'M') {
delay = delay*60*1000000;
from++;
}
/* now wait for the requested amount of time */
udelay(delay);
}
cn = *(from++);
if (!cn)
break;
if (cn == '\n')
cn = ' '; /* replace newlines with space */
if (cn == 0x0d)
cn = ' '; /* replace 0x0d with space */
if (cn == ' ' && c == ' ')
continue; /* remove additional spaces */
c = cn;
if (to - command_line >= COMMAND_LINE_SIZE)
break;
*(to++) = c;
switch (*p) {
case 's':
case 'S':
delay *= 1000000;
break;
case 'm':
case 'M':
delay *= 60 * 1000000;
}
if (c == ' ' && to > command_line) to--;
*to = '\0';
*cmdline_p = command_line;
/* now wait for the requested amount of time */
udelay(delay);
return 0;
}
early_param("ipldelay", early_parse_ipldelay);
static void __init
setup_lowcore(void)
@ -580,9 +553,26 @@ setup_arch(char **cmdline_p)
"We are running native (64 bit mode)\n");
#endif /* CONFIG_64BIT */
/* Save unparsed command line copy for /proc/cmdline */
strlcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
*cmdline_p = COMMAND_LINE;
*(*cmdline_p + COMMAND_LINE_SIZE - 1) = '\0';
ROOT_DEV = Root_RAM0;
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
memory_end = memory_size;
parse_early_param();
#ifndef CONFIG_64BIT
memory_end = memory_size & ~0x400000UL; /* align memory end to 4MB */
memory_end &= ~0x400000UL;
/*
* We need some free virtual space to be able to do vmalloc.
* On a machine with 2GB memory we make sure that we have at
@ -591,17 +581,9 @@ setup_arch(char **cmdline_p)
if (memory_end > 1920*1024*1024)
memory_end = 1920*1024*1024;
#else /* CONFIG_64BIT */
memory_end = memory_size & ~0x200000UL; /* detected in head.s */
memory_end &= ~0x200000UL;
#endif /* CONFIG_64BIT */
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
parse_cmdline_early(cmdline_p);
parse_early_param();
setup_memory();
setup_resources();
setup_lowcore();