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authorVadim Bendebury <vbendeb@chromium.org>2015-01-09 16:54:19 -0800
committerPatrick Georgi <pgeorgi@google.com>2015-04-17 09:53:39 +0200
commit9dccf1c40bc2543ad12f6a5af9daea8d0ef0ddfa (patch)
treed1748e53dd45497dfda184d3452a0e7fa96d6035 /src/drivers/uart/oxpcie_early.c
parentf7da3d2a94dc996235b296569d1eff77842fe361 (diff)
downloadcoreboot-9dccf1c40bc2543ad12f6a5af9daea8d0ef0ddfa.tar.xz
uart: pass register width in the coreboot table
Some SOCs (like pistachio, for instance) provide an 8250 compatible UART, which has the same register layout, but mapped to a bus of a different width. Instead of adding a new driver for these controllers, it is better to have coreboot report UART register width to libpayload, and have it adjust the offsets accordingly when accessing the UART. BRANCH=none BUG=chrome-os-partner:31438 TEST=with the rest of the patches integrated depthcharge console messages show up when running on the FPGA board Change-Id: I30b742146069450941164afb04641b967a214d6d Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 2c30845f269ec6ae1d53ddc5cda0b4320008fa42 Original-Change-Id: Ia0a37cd5f24a1ee4d0334f8a7e3da5df0069cec4 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/240027 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9738 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/drivers/uart/oxpcie_early.c')
-rw-r--r--src/drivers/uart/oxpcie_early.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/drivers/uart/oxpcie_early.c b/src/drivers/uart/oxpcie_early.c
index 343056cdb6..9daafc5fd9 100644
--- a/src/drivers/uart/oxpcie_early.c
+++ b/src/drivers/uart/oxpcie_early.c
@@ -99,6 +99,7 @@ void uart_fill_lb(void *data)
serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
serial.baud = default_baudrate();
+ serial.regwidth = 1;
lb_add_serial(&serial, data);
lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);