[patch 4/22] __early_param for arm
From: trini
Date: Wed Mar 24 2004 - 19:45:24 EST
CC: Russell King <rmk@xxxxxxxxxxxxxxxx>
- Remove saved_command_line (and saving of the command line).
- Call parse_early_options
- Convert initrd=, mem=, *cache* options.
---
linux-2.6-early_setup-trini/arch/arm/kernel/setup.c | 70 ++++----------------
linux-2.6-early_setup-trini/arch/arm/mm/mm-armv.c | 31 +++++---
linux-2.6-early_setup-trini/include/asm-arm/setup.h | 12 ---
3 files changed, 34 insertions(+), 79 deletions(-)
diff -puN arch/arm/kernel/setup.c~arm arch/arm/kernel/setup.c
--- linux-2.6-early_setup/arch/arm/kernel/setup.c~arm 2004-03-24 16:15:05.735896171 -0700
+++ linux-2.6-early_setup-trini/arch/arm/kernel/setup.c 2004-03-24 16:15:05.741894820 -0700
@@ -81,7 +81,6 @@ struct cpu_cache_fns cpu_cache;
unsigned char aux_device_present;
char elf_platform[ELF_PLATFORM_SIZE];
-char saved_command_line[COMMAND_LINE_SIZE];
unsigned long phys_initrd_start __initdata = 0;
unsigned long phys_initrd_size __initdata = 0;
@@ -330,17 +329,19 @@ static struct machine_desc * __init setu
return list;
}
-static void __init early_initrd(char **p)
+static int __init early_initrd(char *p)
{
unsigned long start, size;
- start = memparse(*p, p);
- if (**p == ',') {
- size = memparse((*p) + 1, p);
+ start = memparse(p, &p);
+ if (*p == ',') {
+ size = memparse(p++, &p);
phys_initrd_start = start;
phys_initrd_size = size;
}
+
+ return 0;
}
__early_param("initrd=", early_initrd);
@@ -348,15 +349,14 @@ __early_param("initrd=", early_initrd);
* Pick out the memory size. We look for mem=size@start,
* where start and size are "size[KkMm]"
*/
-static void __init early_mem(char **p)
+static int __init early_mem(char *p)
{
static int usermem __initdata = 0;
unsigned long size, start;
/*
- * If the user specifies memory size, we
- * blow away any automatically generated
- * size.
+ * The user has specified the memory size for the first time,
+ * so we blow away any automatically generated size.
*/
if (usermem == 0) {
usermem = 1;
@@ -364,55 +364,18 @@ static void __init early_mem(char **p)
}
start = PHYS_OFFSET;
- size = memparse(*p, p);
- if (**p == '@')
- start = memparse(*p + 1, p);
+ size = memparse(p, &p);
+ if (*p == '@')
+ start = memparse(p + 1, &p);
meminfo.bank[meminfo.nr_banks].start = start;
meminfo.bank[meminfo.nr_banks].size = size;
meminfo.bank[meminfo.nr_banks].node = PHYS_TO_NID(start);
meminfo.nr_banks += 1;
-}
-__early_param("mem=", early_mem);
-
-/*
- * Initial parsing of the command line.
- */
-static void __init parse_cmdline(char **cmdline_p, char *from)
-{
- char c = ' ', *to = command_line;
- int len = 0;
- for (;;) {
- if (c == ' ') {
- extern struct early_params __early_begin, __early_end;
- struct early_params *p;
-
- for (p = &__early_begin; p < &__early_end; p++) {
- int len = strlen(p->arg);
-
- if (memcmp(from, p->arg, len) == 0) {
- if (to != command_line)
- to -= 1;
- from += len;
- p->fn(&from);
-
- while (*from != ' ' && *from != '\0')
- from++;
- break;
- }
- }
- }
- c = *from++;
- if (!c)
- break;
- if (COMMAND_LINE_SIZE <= ++len)
- break;
- *to++ = c;
- }
- *to = '\0';
- *cmdline_p = command_line;
+ return 0;
}
+__early_param("mem=", early_mem);
static void __init
setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
@@ -704,9 +667,8 @@ void __init setup_arch(char **cmdline_p)
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
- memcpy(saved_command_line, from, COMMAND_LINE_SIZE);
- saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
- parse_cmdline(cmdline_p, from);
+ *cmdline_p = from;
+ parse_early_options(cmdline_p);
bootmem_init(&meminfo);
paging_init(&meminfo, mdesc);
request_standard_resources(&meminfo, mdesc);
diff -puN arch/arm/mm/mm-armv.c~arm arch/arm/mm/mm-armv.c
--- linux-2.6-early_setup/arch/arm/mm/mm-armv.c~arm 2004-03-24 16:15:05.737895720 -0700
+++ linux-2.6-early_setup-trini/arch/arm/mm/mm-armv.c 2004-03-24 16:15:05.742894594 -0700
@@ -80,18 +80,18 @@ static struct cachepolicy cache_policies
* writebuffer to be turned off. (Note: the write
* buffer should not be on and the cache off).
*/
-static void __init early_cachepolicy(char **p)
+static int __init early_cachepolicy(char *p)
{
int i;
for (i = 0; i < ARRAY_SIZE(cache_policies); i++) {
int len = strlen(cache_policies[i].policy);
- if (memcmp(*p, cache_policies[i].policy, len) == 0) {
+ if (memcmp(p, cache_policies[i].policy, len) == 0) {
cachepolicy = i;
cr_alignment &= ~cache_policies[i].cr_mask;
cr_no_alignment &= ~cache_policies[i].cr_mask;
- *p += len;
+ p += len;
break;
}
}
@@ -99,31 +99,36 @@ static void __init early_cachepolicy(cha
printk(KERN_ERR "ERROR: unknown or unsupported cache policy\n");
flush_cache_all();
set_cr(cr_alignment);
+
+ return 0;
}
-static void __init early_nocache(char **__unused)
+static int __init early_nocache(char *__unused)
{
char *p = "buffered";
printk(KERN_WARNING "nocache is deprecated; use cachepolicy=%s\n", p);
- early_cachepolicy(&p);
+ early_cachepolicy(p);
+
+ return 0;
}
-static void __init early_nowrite(char **__unused)
+static int __init early_nowrite(char *__unused)
{
char *p = "uncached";
printk(KERN_WARNING "nowb is deprecated; use cachepolicy=%s\n", p);
- early_cachepolicy(&p);
+ early_cachepolicy(p);
+
+ return 0;
}
-static void __init early_ecc(char **p)
+static int __init early_ecc(char *p)
{
- if (memcmp(*p, "on", 2) == 0) {
+ if (memcmp(p, "on", 2) == 0)
ecc_mask = PMD_PROTECTION;
- *p += 2;
- } else if (memcmp(*p, "off", 3) == 0) {
+ else if (memcmp(p, "off", 3) == 0)
ecc_mask = 0;
- *p += 3;
- }
+
+ return 0;
}
__early_param("nocache", early_nocache);
diff -puN include/asm-arm/setup.h~arm include/asm-arm/setup.h
--- linux-2.6-early_setup/include/asm-arm/setup.h~arm 2004-03-24 16:15:05.738895495 -0700
+++ linux-2.6-early_setup-trini/include/asm-arm/setup.h 2004-03-24 16:15:05.742894594 -0700
@@ -202,16 +202,4 @@ struct meminfo {
extern struct meminfo meminfo;
-/*
- * Early command line parameters.
- */
-struct early_params {
- const char *arg;
- void (*fn)(char **p);
-};
-
-#define __early_param(name,fn) \
-static struct early_params __early_##fn __attribute_used__ \
-__attribute__((__section__("__early_param"))) = { name, fn }
-
#endif
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/