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U-Boot: TRACE fdt_serial instead of dprintf

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and disable it by default (it would hang on some platforms anyway).
This commit is contained in:
François Revol 2015-12-18 21:39:22 +01:00
parent c82af4bebe
commit e89ef1fef7
1 changed files with 14 additions and 6 deletions
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20
src/system/kernel/platform/u-boot/fdt_serial.cpp
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@ -30,6 +30,14 @@ extern "C" {
#include "fdt_support.h"
//#define TRACE_SERIAL
#ifdef TRACE_SERIAL
# define TRACE(x...) dprintf("INIT: " x)
#else
# define TRACE(x...) ;
#endif
// If we dprintf before the UART is initalized there will be no output
@ -70,33 +78,33 @@ debug_uart_from_fdt(const void *fdt)
if (regs == 0)
return NULL;
dprintf("serial: using '%s', node %d @ %" B_PRIxPHYSADDR "\n",
name, node, regs);
TRACE(("serial: using '%s', node %d @ %" B_PRIxPHYSADDR "\n",
name, node, regs));
// get the UART clock rate
prop = fdt_getprop(fdt, node, "clock-frequency", &len);
if (prop && len == 4) {
clock = fdt32_to_cpu(*(uint32_t *)prop);
dprintf("serial: clock %ld\n", clock);
TRACE(("serial: clock %ld\n", clock));
}
// get current speed (XXX: not yet passed over)
prop = fdt_getprop(fdt, node, "current-speed", &len);
if (prop && len == 4) {
speed = fdt32_to_cpu(*(uint32_t *)prop);
dprintf("serial: speed %ld\n", speed);
TRACE(("serial: speed %ld\n", speed));
}
// fdt_node_check_compatible returns 0 on match.
if (fdt_node_check_compatible(fdt, node, "ns16550a") == 0
|| fdt_node_check_compatible(fdt, node, "ns16550") == 0) {
dprintf("serial: Found 8250 serial UART!\n");
TRACE(("serial: Found 8250 serial UART!\n"));
uart = arch_get_uart_8250(regs, clock);
#ifdef __ARM__
} else if (fdt_node_check_compatible(fdt, node, "arm,pl011") == 0
|| fdt_node_check_compatible(fdt, node, "arm,primecell") == 0) {
dprintf("serial: Found pl011 serial UART!\n");
TRACE(("serial: Found pl011 serial UART!\n"));
uart = arch_get_uart_pl011(regs, clock);
#endif
} else {