Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/729
-gerrit
commit 75f206fd16c21602c62026d2c6ce0805713a66b7 Author: Gabe Black gabeblack@google.com Date: Wed Oct 5 01:57:03 2011 -0700
If the memory mapped UART isn't present, leave it out of the cb tables.
This way u-boot won't try to use a UART that isn't plugged in.
Change-Id: I9a3a0d074dd03add8afbd4dad836c4c6a05abe6f Signed-off-by: Gabe Black gabeblack@google.com --- src/arch/x86/boot/coreboot_table.c | 24 ++++++++++++++---------- 1 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/src/arch/x86/boot/coreboot_table.c b/src/arch/x86/boot/coreboot_table.c index 59cf174..a9ff6f0 100644 --- a/src/arch/x86/boot/coreboot_table.c +++ b/src/arch/x86/boot/coreboot_table.c @@ -118,16 +118,20 @@ static struct lb_serial *lb_serial(struct lb_header *header) serial->baud = CONFIG_TTYS0_BAUD; return serial; #elif CONFIG_CONSOLE_SERIAL8250MEM - struct lb_record *rec; - struct lb_serial *serial; - rec = lb_new_record(header); - serial = (struct lb_serial *)rec; - serial->tag = LB_TAG_SERIAL; - serial->size = sizeof(*serial); - serial->type = LB_SERIAL_TYPE_MEMORY_MAPPED; - serial->baseaddr = uartmem_getbaseaddr(); - serial->baud = CONFIG_TTYS0_BAUD; - return serial; + if (uartmem_getbaseaddr()) { + struct lb_record *rec; + struct lb_serial *serial; + rec = lb_new_record(header); + serial = (struct lb_serial *)rec; + serial->tag = LB_TAG_SERIAL; + serial->size = sizeof(*serial); + serial->type = LB_SERIAL_TYPE_MEMORY_MAPPED; + serial->baseaddr = uartmem_getbaseaddr(); + serial->baud = CONFIG_TTYS0_BAUD; + return serial; + } else { + return NULL; + } #else return NULL; #endif