diff options
Diffstat (limited to 'src/mainboard/amd/dbm690t/mainboard.c')
| -rw-r--r-- | src/mainboard/amd/dbm690t/mainboard.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/src/mainboard/amd/dbm690t/mainboard.c b/src/mainboard/amd/dbm690t/mainboard.c index b6493205bf..5a33efe756 100644 --- a/src/mainboard/amd/dbm690t/mainboard.c +++ b/src/mainboard/amd/dbm690t/mainboard.c @@ -49,8 +49,8 @@ unsigned long uma_memory_start, uma_memory_size; /******************************************************** * dbm690t uses a BCM5789 as on-board NIC. * It has a pin named LOW_POWER to enable it into LOW POWER state. -* In order to run NIC, we should let it out of Low power state. This pin -* is controlled by sb600 GPM3. +* In order to run NIC, we should let it out of Low power state. This pin is +* controlled by sb600 GPM3. * RRG4.2.3 GPM as GPIO * GPM pins can be used as GPIO. The GPM I/O functions is controlled by three registers: * I/O C50, C51, C52, PM I/O94, 95, 96. @@ -63,22 +63,27 @@ static void enable_onboard_nic() printk_info("enable_onboard_nic.\n"); - outb(0x13, 0xC50); + /* set index register 0C50h to 13h (miscellaneous control) */ + outb(0x13, 0xC50); /* CMIndex */ + /* set CM data register 0C51h bits [7:6] to 01b to set Input/Out control */ byte = inb(0xC51); byte &= 0x3F; byte |= 0x40; outb(byte, 0xC51); + /* set GPM port 0C52h bit 3 to 0 to enable output for GPM3 */ byte = inb(0xC52); byte &= ~0x8; outb(byte, 0xC52); + /* set CM data register 0C51h bits [7:6] to 10b to set Output state control */ byte = inb(0xC51); byte &= 0x3F; byte |= 0x80; /* 7:6=10 */ outb(byte, 0xC51); + /* set GPM port 0C52h bit 3 to 0 to output 0 on GPM3 */ byte = inb(0xC52); byte &= ~0x8; outb(byte, 0xC52); @@ -204,15 +209,13 @@ void dbm690t_enable(device_t dev) /* TOP_MEM: the top of DRAM below 4G */ msr = rdmsr(TOP_MEM); - printk_info - ("dbm690t_enable, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n", - msr.lo, msr.hi); + printk_info("%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n", + __FUNCTION__, msr.lo, msr.hi); /* TOP_MEM2: the top of DRAM above 4G */ msr2 = rdmsr(TOP_MEM2); - printk_info - ("dbm690t_enable, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n", - msr2.lo, msr2.hi); + printk_info("%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n", + __FUNCTION__, msr2.lo, msr2.hi); switch (msr.lo) { case 0x10000000: /* 256M system memory */ @@ -233,8 +236,8 @@ void dbm690t_enable(device_t dev) } uma_memory_start = msr.lo - uma_memory_size; /* TOP_MEM1 */ - printk_info("dbm690t_enable: uma size 0x%08x, memory start 0x%08x\n", - uma_memory_size, uma_memory_start); + printk_info("%s: uma size 0x%08x, memory start 0x%08x\n", + __FUNCTION__, uma_memory_size, uma_memory_start); /* TODO: TOP_MEM2 */ #else |