diff options
Diffstat (limited to 'src/southbridge/amd/cs5535/cs5535_early_smbus.c')
| -rw-r--r-- | src/southbridge/amd/cs5535/cs5535_early_smbus.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/src/southbridge/amd/cs5535/cs5535_early_smbus.c b/src/southbridge/amd/cs5535/cs5535_early_smbus.c index 4a57dd7438..b7dd436887 100644 --- a/src/southbridge/amd/cs5535/cs5535_early_smbus.c +++ b/src/southbridge/amd/cs5535/cs5535_early_smbus.c @@ -3,35 +3,39 @@ #define SMBUS_IO_BASE 0x6000 /* initialization for SMBus Controller */ -static int enable_smbus(void) +static int cs5535_enable_smbus(void) { unsigned char val; - /* FixME: move to early_iobase.c */ - /* setup LBAR for SMBus controller */ - __builtin_wrmsr(0x5140000B, 0x00006000, 0x0000f001); - /* setup LBAR for GPIO at 0x6100 */ - __builtin_wrmsr(0x5140000C, 0x00006100, 0x0000f001); - - - /* setup GPIO pins for SDA/SCL */ - - /* Setup SMBus host controller address to 0xEF */ - val = inb(SMBUS_IO_BASE + SMB_ADD); - val |= (0xEF | SMB_ADD_SAEN); - outb(val, SMBUS_IO_BASE + SMB_ADD); + outb(0, SMBUS_IO_BASE + SMB_CTRL2); /* Set SCL freq and enable SMB controller */ - outb(0x00, SMBUS_IO_BASE + SMB_CTRL2); val = inb(SMBUS_IO_BASE + SMB_CTRL2); - val |= (0x7F < 1) | SMB_CTRL2_ENABLE; + val |= ((0x7F << 1) | SMB_CTRL2_ENABLE); outb(val, SMBUS_IO_BASE + SMB_CTRL2); - /* Is SDA pulled high ? */ - val = inb(SMBUS_IO_BASE + SMB_CTRL_STS); - if (val & SMB_CSTS_TSDA) - return SMBUS_ERROR; + /* Setup SMBus host controller address to 0xEF */ + val = inb(SMBUS_IO_BASE + SMB_ADD); + val |= (0xEF | SMB_ADD_SAEN); + outb(val, SMBUS_IO_BASE + SMB_ADD); +#if 0 + print_debug("SMBUS registers "); + print_debug_hex8(inb(SMBUS_IO_BASE)); + print_debug(" "); + print_debug_hex8(inb(SMBUS_IO_BASE + 1)); + print_debug(" "); + print_debug_hex8(inb(SMBUS_IO_BASE + 2)); + print_debug(" "); + print_debug_hex8(inb(SMBUS_IO_BASE + 3)); + print_debug(" "); + print_debug_hex8(inb(SMBUS_IO_BASE + 4)); + print_debug(" "); + print_debug_hex8(inb(SMBUS_IO_BASE + 5)); + print_debug(" "); + print_debug_hex8(inb(SMBUS_IO_BASE + 6)); + print_debug("\n\r"); +#endif } #if 0 |