diff options
| author | Scott Wood <scottwood@freescale.com> | 2007-03-26 15:52:24 -0500 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-04-13 03:55:15 +1000 |
| commit | 6e1af384f1c1742ae6d86bbf779d4fa020c509bc (patch) | |
| tree | e07f1cc421fdc4e51847d26bb9bdccc53341e1cc /arch/powerpc/boot/ns16550.c | |
| parent | dbf8eefa2b814d6922492120bfa46d4bc42ceb20 (diff) | |
[POWERPC] bootwrapper: Add dt_xlate_reg(), and use it to find serial registers.
dt_xlate_reg() uses the ranges properties of a node's parentage to find
the absolute physical address of the node's registers.
The ns16550 driver uses this when no virtual-reg property is found.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/boot/ns16550.c')
| -rw-r--r-- | arch/powerpc/boot/ns16550.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/powerpc/boot/ns16550.c b/arch/powerpc/boot/ns16550.c index 1ffe72e35cd..f8f1b2f3141 100644 --- a/arch/powerpc/boot/ns16550.c +++ b/arch/powerpc/boot/ns16550.c @@ -55,10 +55,15 @@ static u8 ns16550_tstc(void) int ns16550_console_init(void *devp, struct serial_console_data *scdp) { int n; + unsigned long reg_phys; n = getprop(devp, "virtual-reg", ®_base, sizeof(reg_base)); - if (n != sizeof(reg_base)) - return -1; + if (n != sizeof(reg_base)) { + if (!dt_xlate_reg(devp, 0, ®_phys, NULL)) + return -1; + + reg_base = (void *)reg_phys; + } n = getprop(devp, "reg-shift", ®_shift, sizeof(reg_shift)); if (n != sizeof(reg_shift)) |