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author | Steven J. Hill <Steven.Hill@imgtec.com> | 2013-03-25 14:32:15 -0500 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2013-05-08 12:30:09 +0200 |
commit | 14aecdd419217e041fb5dd2749d11f58503bdf62 (patch) | |
tree | ab7fbfadfcaa6d92b0465525aa55e22fb19e934f /arch/mips/include | |
parent | 98ffcf602bd55656a4f6c5d9c743bffef115a8c1 (diff) | |
download | linux-stable-14aecdd419217e041fb5dd2749d11f58503bdf62.tar.gz linux-stable-14aecdd419217e041fb5dd2749d11f58503bdf62.tar.bz2 linux-stable-14aecdd419217e041fb5dd2749d11f58503bdf62.zip |
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 <Steven.Hill@imgtec.com>
Diffstat (limited to 'arch/mips/include')
-rw-r--r-- | arch/mips/include/asm/fw/fw.h | 47 |
1 files changed, 47 insertions, 0 deletions
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 <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; + +/* + * 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_ */ |