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| author | Andre Przywara <andre.przywara@calxeda.com> | 2013-05-24 15:47:26 +0200 |
|---|---|---|
| committer | Ian Campbell <ian.campbell@citrix.com> | 2013-05-30 09:20:10 +0100 |
| commit | b68346247f74e002ef180403167888a03f488080 (patch) | |
| tree | 05b17aaa93f8ba4d5dfb6b8151cacab4b842dfb8 /docs | |
| parent | 54353cae096c19f176417f6d425de0a0f8a71228 (diff) | |
| download | xen-b68346247f74e002ef180403167888a03f488080.tar.gz xen-b68346247f74e002ef180403167888a03f488080.tar.bz2 xen-b68346247f74e002ef180403167888a03f488080.zip | |
arm/early-printk: calculate baud rate divisor from user provided value
For early-printk the used baud rate was hardcoded in the code, using
precalculated divisor values.
Let the calculation of these values be done by the preprocessor and
use a human readable value in xen/arch/arm/Rules.mk to drive this.
Signed-off-by: Andre Przywara <andre.przywara@calxeda.com>
Reviewed-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/misc/arm/early-printk.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/misc/arm/early-printk.txt b/docs/misc/arm/early-printk.txt index d5cae85ddb..10c30531f6 100644 --- a/docs/misc/arm/early-printk.txt +++ b/docs/misc/arm/early-printk.txt @@ -12,4 +12,7 @@ where mach is the name of the machine: - vexpress: printk with pl011 for versatile express - exynos5250: printk with the second UART +The baud rate is hardcoded in xen/arch/arm/Rules.mk, +see there when adding support for new machines. + By default early printk is disabled. |