@@ -9,7 +9,6 @@
/* Architecture-specific global data */
struct arch_global_data {
- int running_on_hw;
};
#include <asm-generic/global_data.h>
@@ -14,12 +14,6 @@ int arch_cpu_init(void)
{
timer_init();
-/* In simulation (ISS) "CHIPID" and "ARCNUM" are all "ff" */
- if ((read_aux_reg(ARC_AUX_IDENTITY) & 0xffffff00) == 0xffffff00)
- gd->arch.running_on_hw = 0;
- else
- gd->arch.running_on_hw = 1;
-
gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
@@ -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, ®s->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, ®s->baudh);
- else
- writeb(1, ®s->baudh);
-#else
writeb((arc_console_baud & 0xff00) >> 8, ®s->baudh);
-#endif
return 0;
}
ISS is obsolete now and nSIM is used for simulation instead.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> --- arch/arc/include/asm/global_data.h | 1 - arch/arc/lib/cpu.c | 6 ------ drivers/serial/serial_arc.c | 16 ---------------- 3 files changed, 23 deletions(-)