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MIPS: TXx9: Early command-line preprocessing

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* Select board by command-line option or firmware environment variable.
* Handle "masterclk=" option.
* Add boards.h to centerize board_vec declaration.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 include/asm-mips/txx9/boards.h
This commit is contained in:
Atsushi Nemoto 2008-08-19 22:55:08 +09:00 committed by Ralf Baechle
parent 265b89db10
commit 860e546c19
2 changed files with 78 additions and 6 deletions
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74
arch/mips/txx9/generic/setup.c
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@ -119,14 +119,31 @@ int irq_to_gpio(unsigned irq)
EXPORT_SYMBOL(irq_to_gpio);
#endif
extern struct txx9_board_vec jmr3927_vec;
extern struct txx9_board_vec rbtx4927_vec;
extern struct txx9_board_vec rbtx4937_vec;
extern struct txx9_board_vec rbtx4938_vec;
#define BOARD_VEC(board) extern struct txx9_board_vec board;
#include <asm/txx9/boards.h>
#undef BOARD_VEC
struct txx9_board_vec *txx9_board_vec __initdata;
static char txx9_system_type[32];
static struct txx9_board_vec *board_vecs[] __initdata = {
#define BOARD_VEC(board) &board,
#include <asm/txx9/boards.h>
#undef BOARD_VEC
};
static struct txx9_board_vec *__init find_board_byname(const char *name)
{
int i;
/* search board_vecs table */
for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
if (strstr(board_vecs[i]->system, name))
return board_vecs[i];
}
return NULL;
}
static void __init prom_init_cmdline(void)
{
int argc = (int)fw_arg0;
@ -169,9 +186,47 @@ static void __init prom_init_cmdline(void)
}
}
void __init prom_init(void)
static void __init preprocess_cmdline(void)
{
prom_init_cmdline();
char cmdline[CL_SIZE];
char *s;
strcpy(cmdline, arcs_cmdline);
s = cmdline;
arcs_cmdline[0] = '\0';
while (s && *s) {
char *str = strsep(&s, " ");
if (strncmp(str, "board=", 6) == 0) {
txx9_board_vec = find_board_byname(str + 6);
continue;
} else if (strncmp(str, "masterclk=", 10) == 0) {
unsigned long val;
if (strict_strtoul(str + 10, 10, &val) == 0)
txx9_master_clock = val;
continue;
}
if (arcs_cmdline[0])
strcat(arcs_cmdline, " ");
strcat(arcs_cmdline, str);
}
}
static void __init select_board(void)
{
const char *envstr;
/* first, determine by "board=" argument in preprocess_cmdline() */
if (txx9_board_vec)
return;
/* next, determine by "board" envvar */
envstr = prom_getenv("board");
if (envstr) {
txx9_board_vec = find_board_byname(envstr);
if (txx9_board_vec)
return;
}
/* select "default" board */
#ifdef CONFIG_CPU_TX39XX
txx9_board_vec = &jmr3927_vec;
#endif
@ -192,6 +247,13 @@ void __init prom_init(void)
#endif
}
#endif
}
void __init prom_init(void)
{
prom_init_cmdline();
preprocess_cmdline();
select_board();
strcpy(txx9_system_type, txx9_board_vec->system);

10
include/asm-mips/txx9/boards.h Normal file
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@ -0,0 +1,10 @@
#ifdef CONFIG_TOSHIBA_JMR3927
BOARD_VEC(jmr3927_vec)
#endif
#ifdef CONFIG_TOSHIBA_RBTX4927
BOARD_VEC(rbtx4927_vec)
BOARD_VEC(rbtx4937_vec)
#endif
#ifdef CONFIG_TOSHIBA_RBTX4938
BOARD_VEC(rbtx4938_vec)
#endif