leandrof/u-boot
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

arc: get rid of running_on_hw

Browse Source 
ISS is obsolete now and nSIM is used for simulation instead.
In its turn nSIM properly handles baud-rate settings so get rid
of now useless check.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin
2016-02-20 11:30:19 +03:00
parent 9dbdc6ebd4
commit 8b15010b1f
3 changed files with 0 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/serial/serial_arc.c
View File

@@ -42,23 +42,7 @@ static int arc_serial_setbrg(struct udevice *dev, int baudrate)
int arc_console_baud = gd->cpu_clk / (baudrate * 4) - 1;
writeb(arc_console_baud & 0xff, &regs->baudl);
#ifdef CONFIG_ARC
/*
* UART ISS(Instruction Set simulator) emulation has a subtle bug:
* A existing value of Baudh = 0 is used as a indication to startup
* it's internal state machine.
* Thus if baudh is set to 0, 2 times, it chokes.
* This happens with BAUD=115200 and the formaula above
* Until that is fixed, when running on ISS, we will set baudh to !0
*/
if (gd->arch.running_on_hw)
writeb((arc_console_baud & 0xff00) >> 8, &regs->baudh);
else
writeb(1, &regs->baudh);
#else
writeb((arc_console_baud & 0xff00) >> 8, &regs->baudh);
#endif
return 0;
}