diff options
Diffstat (limited to 'src/southbridge/via/vt8235/early_serial.c')
-rw-r--r-- | src/southbridge/via/vt8235/early_serial.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/src/southbridge/via/vt8235/early_serial.c b/src/southbridge/via/vt8235/early_serial.c deleted file mode 100644 index b9bec5fa08..0000000000 --- a/src/southbridge/via/vt8235/early_serial.c +++ /dev/null @@ -1,77 +0,0 @@ -/* - * Enable the serial devices on the VIA - */ - - -/* The base address is 0x15c, 0x2e, depending on config bytes */ - -#define SIO_BASE 0x3f0 -#define SIO_DATA SIO_BASE+1 - -static void vt8235_writepnpaddr(uint8_t val) -{ - outb(val, 0x2e); - outb(val, 0xeb); -} - -static void vt8235_writepnpdata(uint8_t val) -{ - outb(val, 0x2f); - outb(val, 0xeb); -} - - -static void vt8235_writesiobyte(uint16_t reg, uint8_t val) -{ - outb(val, reg); -} - -static void vt8235_writesioword(uint16_t reg, uint16_t val) -{ - outw(val, reg); -} - - -/* regs we use: 85, and the southbridge devfn is defined by the - mainboard - */ - -static void enable_vt8235_serial(void) -{ - // turn on pnp - vt8235_writepnpaddr(0x87); - vt8235_writepnpaddr(0x87); - // now go ahead and set up com1. - // set address - vt8235_writepnpaddr(0x7); - vt8235_writepnpdata(0x2); - // enable serial out - vt8235_writepnpaddr(0x30); - vt8235_writepnpdata(0x1); - // serial port 1 base address (FEh) - vt8235_writepnpaddr(0x60); - vt8235_writepnpdata(0xfe); - // serial port 1 IRQ (04h) - vt8235_writepnpaddr(0x70); - vt8235_writepnpdata(0x4); - // serial port 1 control - vt8235_writepnpaddr(0xf0); - vt8235_writepnpdata(0x2); - // turn of pnp - vt8235_writepnpaddr(0xaa); - - // set up reg to set baud rate. - vt8235_writesiobyte(0x3fb, 0x80); - // Set 115 kb - vt8235_writesioword(0x3f8, 1); - // Set 9.6 kb - // WRITESIOWORD(0x3f8, 12) - // now set no parity, one stop, 8 bits - vt8235_writesiobyte(0x3fb, 3); - // now turn on RTS, DRT - vt8235_writesiobyte(0x3fc, 3); - // Enable interrupts - vt8235_writesiobyte(0x3f9, 0xf); - // should be done. Dump a char for fun. - vt8235_writesiobyte(0x3f8, 48); -} |