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authorJeremy Kerr <jeremy.kerr@canonical.com>2010-01-11 23:17:34 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-15 21:39:13 +0000
commit2b0d8c251b8876d530a6bf671eb5425838fa698a (patch)
treef8b85d4ee0f76be6a45738452e91fbbb94602b4c /arch/arm/kernel
parente119bfff1f102f8d1505910cd6c09df55c776b43 (diff)
downloadlinux-2b0d8c251b8876d530a6bf671eb5425838fa698a.tar.bz2
ARM: 5880/1: arm: use generic infrastructure for early params
The ARM setup code includes its own parser for early params, there's also one in the generic init code. This patch removes __early_init (and related code) from arch/arm/kernel/setup.c, and changes users to the generic early_init macro instead. The generic macro takes a char * argument, rather than char **, so we need to update the parser functions a little. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/setup.c62
-rw-r--r--arch/arm/kernel/vmlinux.lds.S4
2 files changed, 16 insertions, 50 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 5357e48f2c39..b01a56a03ed8 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -418,10 +418,11 @@ static int __init arm_add_memory(unsigned long start, unsigned long size)
* 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;
+ char *endp;
/*
* If the user specifies memory size, we
@@ -434,52 +435,15 @@ static void __init early_mem(char **p)
}
start = PHYS_OFFSET;
- size = memparse(*p, p);
- if (**p == '@')
- start = memparse(*p + 1, p);
+ size = memparse(p, &endp);
+ if (*endp == '@')
+ start = memparse(endp + 1, NULL);
arm_add_memory(start, size);
-}
-__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 arglen = strlen(p->arg);
-
- if (memcmp(from, p->arg, arglen) == 0) {
- if (to != command_line)
- to -= 1;
- from += arglen;
- 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)
@@ -740,9 +704,15 @@ void __init setup_arch(char **cmdline_p)
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) _end;
- memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
- boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
- parse_cmdline(cmdline_p, from);
+ /* parse_early_param needs a boot_command_line */
+ strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
+
+ /* populate command_line too for later use, preserving boot_command_line */
+ strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
+ *cmdline_p = command_line;
+
+ parse_early_param();
+
paging_init(mdesc);
request_standard_resources(&meminfo, mdesc);
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 4957e13ef55b..b16c07914b55 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -43,10 +43,6 @@ SECTIONS
INIT_SETUP(16)
- __early_begin = .;
- *(.early_param.init)
- __early_end = .;
-
INIT_CALLS
CON_INITCALL
SECURITY_INITCALL