diff options
Diffstat (limited to 'arch/mips/alchemy/devboards/db1200.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1200.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/arch/mips/alchemy/devboards/db1200.c b/arch/mips/alchemy/devboards/db1200.c index 1181241c505..67219913f09 100644 --- a/arch/mips/alchemy/devboards/db1200.c +++ b/arch/mips/alchemy/devboards/db1200.c @@ -66,19 +66,33 @@ static int __init detect_board(void) { int bid; - /* try the PB1200 first */ + /* try the DB1200 first */ + bcsr_init(DB1200_BCSR_PHYS_ADDR, + DB1200_BCSR_PHYS_ADDR + DB1200_BCSR_HEXLED_OFS); + if (BCSR_WHOAMI_DB1200 == BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) { + unsigned short t = bcsr_read(BCSR_HEXLEDS); + bcsr_write(BCSR_HEXLEDS, ~t); + if (bcsr_read(BCSR_HEXLEDS) != t) { + bcsr_write(BCSR_HEXLEDS, t); + return 0; + } + } + + /* okay, try the PB1200 then */ bcsr_init(PB1200_BCSR_PHYS_ADDR, PB1200_BCSR_PHYS_ADDR + PB1200_BCSR_HEXLED_OFS); bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)); if ((bid == BCSR_WHOAMI_PB1200_DDR1) || - (bid == BCSR_WHOAMI_PB1200_DDR2)) - return 0; + (bid == BCSR_WHOAMI_PB1200_DDR2)) { + unsigned short t = bcsr_read(BCSR_HEXLEDS); + bcsr_write(BCSR_HEXLEDS, ~t); + if (bcsr_read(BCSR_HEXLEDS) != t) { + bcsr_write(BCSR_HEXLEDS, t); + return 0; + } + } - /* okay, try the DB1200 then */ - bcsr_init(DB1200_BCSR_PHYS_ADDR, - DB1200_BCSR_PHYS_ADDR + DB1200_BCSR_HEXLED_OFS); - bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)); - return bid == BCSR_WHOAMI_DB1200 ? 0 : 1; + return 1; /* it's neither */ } void __init board_setup(void) |