From 6aca1e8b26e712d056816ba936fb4d5834a07467 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Fri, 22 Apr 2011 01:45:11 +0000 Subject: The UART divider should be calculated based on the base frequency and baudrate, not hardcoded in addition to that. Signed-off-by: Stefan Reinauer Acked-by: Peter Stuge git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6538 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/console/uart8250_console.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'src/console') diff --git a/src/console/uart8250_console.c b/src/console/uart8250_console.c index 53ca3a762e..03db400319 100644 --- a/src/console/uart8250_console.c +++ b/src/console/uart8250_console.c @@ -25,7 +25,13 @@ static void ttyS0_init(void) { static const unsigned char div[8] = { 1, 2, 3, 6, 12, 24, 48, 96 }; int b_index = 0; - unsigned int divisor = CONFIG_TTYS0_DIV; + /* TODO the divisor calculation is hard coded to standard UARTs. Some + * UARTs won't work with these values. This should be a property of the + * UART used, worst case a Kconfig variable. For now live with hard + * codes as the only devices that might be different are the iWave + * iRainbowG6 and the OXPCIe952 card (and the latter is memory mapped) + */ + unsigned int divisor = 115200 / CONFIG_TTYS0_BAUD; if (get_option(&b_index, "baud_rate") == 0) { divisor = div[b_index]; -- cgit v1.2.3