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[MIPS] Cleanup memory managment initialization.

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Historically plat_mem_setup did the entire platform initialization.  This
was rather impractical because it meant plat_mem_setup had to get away
without any kind of memory allocator.  To keep old code from breaking
plat_setup was just renamed to plat_setup and a second platform
initialization hook for anything else was introduced.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2006-06-18 01:32:22 +01:00
parent 7ab2dc41d1
commit 2925aba422
34 changed files with 81 additions and 45 deletions
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56
arch/mips/kernel/setup.c
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@ -442,6 +442,48 @@ static inline void bootmem_init(void)
#endif /* CONFIG_BLK_DEV_INITRD */
}
/*
* arch_mem_init - initialize memory managment subsystem
*
* o plat_mem_setup() detects the memory configuration and will record detected
* memory areas using add_memory_region.
* o parse_cmdline_early() parses the command line for mem= options which,
* iff detected, will override the results of the automatic detection.
*
* At this stage the memory configuration of the system is known to the
* kernel but generic memory managment system is still entirely uninitialized.
*
* o bootmem_init()
* o sparse_init()
* o paging_init()
*
* At this stage the bootmem allocator is ready to use.
*
* NOTE: historically plat_mem_setup did the entire platform initialization.
* This was rather impractical because it meant plat_mem_setup had to
* get away without any kind of memory allocator. To keep old code from
* breaking plat_setup was just renamed to plat_setup and a second platform
* initialization hook for anything else was introduced.
*/
extern void plat_mem_setup(void);
static void __init arch_mem_init(char **cmdline_p)
{
/* call board setup routine */
plat_mem_setup();
strlcpy(command_line, arcs_cmdline, sizeof(command_line));
strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
parse_cmdline_early();
bootmem_init();
sparse_init();
paging_init();
}
static inline void resource_init(void)
{
int i;
@ -495,8 +537,6 @@ static inline void resource_init(void)
#undef MAXMEM
#undef MAXMEM_PFN
extern void plat_setup(void);
void __init setup_arch(char **cmdline_p)
{
cpu_probe();
@ -511,18 +551,8 @@ void __init setup_arch(char **cmdline_p)
#endif
#endif
/* call board setup routine */
plat_setup();
arch_mem_init(cmdline_p);
strlcpy(command_line, arcs_cmdline, sizeof(command_line));
strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
parse_cmdline_early();
bootmem_init();
sparse_init();
paging_init();
resource_init();
#ifdef CONFIG_SMP
plat_smp_setup();