From 14aecdd419217e041fb5dd2749d11f58503bdf62 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 14:32:15 -0500 Subject: MIPS: FW: Add environment variable processing. Add parsing of the environment and command line variables passed to the kernel to the firmware library. Signed-off-by: Steven J. Hill --- arch/mips/include/asm/fw/fw.h | 47 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 arch/mips/include/asm/fw/fw.h (limited to 'arch/mips/include') diff --git a/arch/mips/include/asm/fw/fw.h b/arch/mips/include/asm/fw/fw.h new file mode 100644 index 000000000000..d6c50a7e9ede --- /dev/null +++ b/arch/mips/include/asm/fw/fw.h @@ -0,0 +1,47 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. + */ +#ifndef __ASM_FW_H_ +#define __ASM_FW_H_ + +#include /* 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; + +/* + * Most firmware like YAMON, PMON, etc. pass arguments and environment + * variables as 32-bit pointers. These take care of sign extension. + */ +#define fw_argv(index) ((char *)(long)_fw_argv[(index)]) +#define fw_envp(index) ((char *)(long)_fw_envp[(index)]) + +extern void fw_init_cmdline(void); +extern char *fw_getcmdline(void); +extern fw_memblock_t *fw_getmdesc(void); +extern void fw_meminit(void); +extern char *fw_getenv(char *name); +extern unsigned long fw_getenvl(char *name); +extern void fw_init_early_console(char port); + +#endif /* __ASM_FW_H_ */ -- cgit v1.2.2