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of/flattree: merge early_init_dt_scan_chosen()

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Merge common code between PowerPC and Microblaze.  This patch
splits the arch-specific stuff out into a new function,
early_init_dt_scan_chosen_arch().

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Grant Likely 2009-12-10 23:42:21 -07:00
parent 0f0b56c3f2
commit 86e0322134
4 changed files with 53 additions and 78 deletions
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44
arch/microblaze/kernel/prom.c
View file

@ -108,49 +108,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
return 0;
}
static int __init early_init_dt_scan_chosen(unsigned long node,
const char *uname, int depth, void *data)
void __init early_init_dt_scan_chosen_arch(unsigned long node)
{
unsigned long l;
char *p;
pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
if (depth != 1 ||
(strcmp(uname, "chosen") != 0 &&
strcmp(uname, "chosen@0") != 0))
return 0;
#ifdef CONFIG_KEXEC
lprop = (u64 *)of_get_flat_dt_prop(node,
"linux,crashkernel-base", NULL);
if (lprop)
crashk_res.start = *lprop;
lprop = (u64 *)of_get_flat_dt_prop(node,
"linux,crashkernel-size", NULL);
if (lprop)
crashk_res.end = crashk_res.start + *lprop - 1;
#endif
early_init_dt_check_for_initrd(node);
/* Retreive command line */
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
#ifdef CONFIG_CMDLINE
#ifndef CONFIG_CMDLINE_FORCE
if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
#endif
strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
#endif /* CONFIG_CMDLINE */
pr_debug("Command line is: %s\n", cmd_line);
/* break now */
return 1;
/* No Microblaze specific code here */
}
static int __init early_init_dt_scan_memory(unsigned long node,

46
arch/powerpc/kernel/prom.c
View file

@ -367,18 +367,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
return 0;
}
static int __init early_init_dt_scan_chosen(unsigned long node,
const char *uname, int depth, void *data)
void __init early_init_dt_scan_chosen_arch(unsigned long node)
{
unsigned long *lprop;
unsigned long l;
char *p;
DBG("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
if (depth != 1 ||
(strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
return 0;
#ifdef CONFIG_PPC64
/* check if iommu is forced on or off */
@ -389,17 +380,17 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
#endif
/* mem=x on the command line is the preferred mechanism */
lprop = of_get_flat_dt_prop(node, "linux,memory-limit", NULL);
if (lprop)
memory_limit = *lprop;
lprop = of_get_flat_dt_prop(node, "linux,memory-limit", NULL);
if (lprop)
memory_limit = *lprop;
#ifdef CONFIG_PPC64
lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-start", NULL);
if (lprop)
tce_alloc_start = *lprop;
lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
if (lprop)
tce_alloc_end = *lprop;
lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-start", NULL);
if (lprop)
tce_alloc_start = *lprop;
lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
if (lprop)
tce_alloc_end = *lprop;
#endif
#ifdef CONFIG_KEXEC
@ -411,23 +402,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
if (lprop)
crashk_res.end = crashk_res.start + *lprop - 1;
#endif
early_init_dt_check_for_initrd(node);
/* Retreive command line */
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
#ifdef CONFIG_CMDLINE
if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
#endif /* CONFIG_CMDLINE */
DBG("Command line is: %s\n", cmd_line);
/* break now */
return 1;
}
#ifdef CONFIG_PPC_PSERIES

38
drivers/of/fdt.c
View file

@ -15,6 +15,10 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
#ifdef CONFIG_PPC
#include <asm/machdep.h>
#endif /* CONFIG_PPC */
int __initdata dt_root_addr_cells;
int __initdata dt_root_size_cells;
@ -440,6 +444,40 @@ u64 __init dt_mem_next_cell(int s, u32 **cellp)
return of_read_number(p, s);
}
int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
int depth, void *data)
{
unsigned long l;
char *p;
pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
if (depth != 1 ||
(strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
return 0;
early_init_dt_check_for_initrd(node);
/* Retreive command line */
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
#ifdef CONFIG_CMDLINE
#ifndef CONFIG_CMDLINE_FORCE
if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
#endif
strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
#endif /* CONFIG_CMDLINE */
early_init_dt_scan_chosen_arch(node);
pr_debug("Command line is: %s\n", cmd_line);
/* break now */
return 1;
}
/**
* unflatten_device_tree - create tree of device_nodes from flat blob
*

3
include/linux/of_fdt.h
View file

@ -71,6 +71,9 @@ extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
unsigned long *size);
extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
extern unsigned long of_get_flat_dt_root(void);
extern void early_init_dt_scan_chosen_arch(unsigned long node);
extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
int depth, void *data);
extern void early_init_dt_check_for_initrd(unsigned long node);
extern u64 dt_mem_next_cell(int s, u32 **cellp);