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MIPS: Malta: Remove fw_memblock_t abstraction 

The fw_getmdesc function & fw_memblock_t abstraction is only used by
Malta, and so far as I can tell serves no purpose beyond making the code
less clear than it could be. Remove the useless level of abstraction.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11221/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Paul Burton 2015-09-22 11:56:37 -07:00 committed by Ralf Baechle
parent e1137e1d59
commit ea050714bc
2 changed files with 29 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/mips/include/asm/fw/fw.h
View File

@ -10,21 +10,6 @@
#include <asm/bootinfo.h> /* For cleaner code... */
enum fw_memtypes {
fw_dontuse,
fw_code,
fw_free,
};
typedef struct {
unsigned long base; /* Within KSEG0 */
unsigned int size; /* bytes */
enum fw_memtypes type; /* fw_memtypes */
} fw_memblock_t;
/* Maximum number of memory block descriptors. */
#define FW_MAX_MEMBLOCKS 32
extern int fw_argc;
extern int *_fw_argv;
extern int *_fw_envp;
@ -38,7 +23,6 @@ extern int *_fw_envp;
extern void fw_init_cmdline(void);
extern char *fw_getcmdline(void);
extern fw_memblock_t *fw_getmdesc(int);
extern void fw_meminit(void);
extern char *fw_getenv(char *name);
extern unsigned long fw_getenvl(char *name);

93
arch/mips/mti-malta/malta-memory.c
View File

@ -21,19 +21,25 @@
#include <asm/sections.h>
#include <asm/fw/fw.h>
static fw_memblock_t mdesc[FW_MAX_MEMBLOCKS];
/* determined physical memory size, not overridden by command line args */
unsigned long physical_memsize = 0L;
fw_memblock_t * __init fw_getmdesc(int eva)
static void free_init_pages_eva_malta(void *begin, void *end)
{
free_init_pages("unused kernel", __pa_symbol((unsigned long *)begin),
__pa_symbol((unsigned long *)end));
}
void __init fw_meminit(void)
{
char *memsize_str, *ememsize_str = NULL, *ptr;
unsigned long memsize = 0, ememsize = 0;
unsigned long kernel_start_phys, kernel_end_phys;
static char cmdline[COMMAND_LINE_SIZE] __initdata;
bool eva = config_enabled(CONFIG_EVA);
int tmp;
/* otherwise look in the environment */
free_init_pages_eva = eva ? free_init_pages_eva_malta : NULL;
memsize_str = fw_getenv("memsize");
if (memsize_str) {
@ -92,15 +98,14 @@ fw_memblock_t * __init fw_getmdesc(int eva)
if (memsize > 0x7fff0000)
memsize = 0x7fff0000;
memset(mdesc, 0, sizeof(mdesc));
add_memory_region(PHYS_OFFSET, 0x00001000, BOOT_MEM_RESERVED);
mdesc[0].type = fw_dontuse;
mdesc[0].base = PHYS_OFFSET;
mdesc[0].size = 0x00001000;
mdesc[1].type = fw_code;
mdesc[1].base = mdesc[0].base + 0x00001000UL;
mdesc[1].size = 0x000ef000;
/*
* YAMON may still be using the region of memory from 0x1000 to 0xfffff
* if it has started secondary CPUs.
*/
add_memory_region(PHYS_OFFSET + 0x00001000, 0x000ef000,
BOOT_MEM_ROM_DATA);
/*
* The area 0x000f0000-0x000fffff is allocated for BIOS memory by the
@ -109,59 +114,19 @@ fw_memblock_t * __init fw_getmdesc(int eva)
* This mean that this area can't be used as DMA memory for PCI
* devices.
*/
mdesc[2].type = fw_dontuse;
mdesc[2].base = mdesc[0].base + 0x000f0000UL;
mdesc[2].size = 0x00010000;
add_memory_region(PHYS_OFFSET + 0x000f0000, 0x00010000,
BOOT_MEM_RESERVED);
mdesc[3].type = fw_dontuse;
mdesc[3].base = mdesc[0].base + 0x00100000UL;
mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) -
0x00100000UL;
mdesc[4].type = fw_free;
mdesc[4].base = mdesc[0].base + CPHYSADDR(PFN_ALIGN(&_end));
mdesc[4].size = memsize - CPHYSADDR(mdesc[4].base);
return &mdesc[0];
}
static void free_init_pages_eva_malta(void *begin, void *end)
{
free_init_pages("unused kernel", __pa_symbol((unsigned long *)begin),
__pa_symbol((unsigned long *)end));
}
static int __init fw_memtype_classify(unsigned int type)
{
switch (type) {
case fw_free:
return BOOT_MEM_RAM;
case fw_code:
return BOOT_MEM_ROM_DATA;
default:
return BOOT_MEM_RESERVED;
}
}
void __init fw_meminit(void)
{
fw_memblock_t *p;
p = fw_getmdesc(config_enabled(CONFIG_EVA));
free_init_pages_eva = (config_enabled(CONFIG_EVA) ?
free_init_pages_eva_malta : NULL);
while (p->size) {
long type;
unsigned long base, size;
type = fw_memtype_classify(p->type);
base = p->base;
size = p->size;
add_memory_region(base, size, type);
p++;
}
/*
* Reserve the memory used by kernel code, and allow the rest of RAM to
* be used.
*/
kernel_start_phys = PHYS_OFFSET + 0x00100000;
kernel_end_phys = PHYS_OFFSET + CPHYSADDR(PFN_ALIGN(&_end));
add_memory_region(kernel_start_phys, kernel_end_phys,
BOOT_MEM_RESERVED);
add_memory_region(kernel_end_phys, memsize - kernel_end_phys,
BOOT_MEM_RAM);
}
void __init prom_free_prom_memory(void)