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Commit 265b89db authored by Atsushi Nemoto's avatar Atsushi Nemoto Committed by Ralf Baechle
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MIPS: TXx9: Add prom_getenv 



Add prom_getenv() which can be used for YAMON.  This assumes other
firmware should pass NULL for fw_arg2.

Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent e0dfb20c

arch/mips/txx9/generic/setup.c

+15 −0
Original line number Diff line number Diff line
@@ -212,6 +212,21 @@ char * __init prom_getcmdline(void) 
	return &(arcs_cmdline[0]);

}



const char *__init prom_getenv(const char *name)

{

	const s32 *str = (const s32 *)fw_arg2;



	if (!str)

		return NULL;

	/* YAMON style ("name", "value" pairs) */

	while (str[0] && str[1]) {

		if (!strcmp((const char *)(unsigned long)str[0], name))

			return (const char *)(unsigned long)str[1];

		str += 2;

	}

	return NULL;

}



static void __noreturn txx9_machine_halt(void)

{

	local_irq_disable();

include/asm-mips/txx9/generic.h

+1 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ struct txx9_board_vec { 
extern struct txx9_board_vec *txx9_board_vec;

extern int (*txx9_irq_dispatch)(int pending);

char *prom_getcmdline(void);

const char *prom_getenv(const char *name);

void txx9_wdt_init(unsigned long base);

void txx9_spi_init(int busid, unsigned long base, int irq);

void txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr);