diff options
Diffstat (limited to 'arch/avr32')
| -rw-r--r-- | arch/avr32/include/asm/setup.h | 9 | ||||
| -rw-r--r-- | arch/avr32/kernel/setup.c | 15 |
2 files changed, 24 insertions, 0 deletions
diff --git a/arch/avr32/include/asm/setup.h b/arch/avr32/include/asm/setup.h index ff5b7cf6be4..160543dbec7 100644 --- a/arch/avr32/include/asm/setup.h +++ b/arch/avr32/include/asm/setup.h @@ -94,6 +94,13 @@ struct tag_ethernet { #define ETH_INVALID_PHY 0xff +/* board information */ +#define ATAG_BOARDINFO 0x54410008 + +struct tag_boardinfo { + u32 board_number; +}; + struct tag { struct tag_header hdr; union { @@ -102,6 +109,7 @@ struct tag { struct tag_cmdline cmdline; struct tag_clock clock; struct tag_ethernet ethernet; + struct tag_boardinfo boardinfo; } u; }; @@ -128,6 +136,7 @@ extern struct tag *bootloader_tags; extern resource_size_t fbmem_start; extern resource_size_t fbmem_size; +extern u32 board_number; void setup_processor(void); diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c index 5c7083916c3..bb0974cce4a 100644 --- a/arch/avr32/kernel/setup.c +++ b/arch/avr32/kernel/setup.c @@ -391,6 +391,21 @@ static int __init parse_tag_clock(struct tag *tag) __tagtable(ATAG_CLOCK, parse_tag_clock); /* + * The board_number correspond to the bd->bi_board_number in U-Boot. This + * parameter is only available during initialisation and can be used in some + * kind of board identification. + */ +u32 __initdata board_number; + +static int __init parse_tag_boardinfo(struct tag *tag) +{ + board_number = tag->u.boardinfo.board_number; + + return 0; +} +__tagtable(ATAG_BOARDINFO, parse_tag_boardinfo); + +/* * Scan the tag table for this tag, and call its parse function. The * tag table is built by the linker from all the __tagtable * declarations. |