openfirmware: remove real_time_clock.

It is used only in the TCP loader to initialize a random TCP source port.
Since the RTC device does not exist on sparc, this is not portable. A
simple solution is to use a non-random source port, maybe based on the
powercycle count or something like that. For now, I don't need the TCP
loader, so I'll just disable this.

Change-Id: I6e279a77bb90a8b8b989f06dd9fb256156f71635
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1988
Reviewed-by: waddlesplash <[email protected]>

src/system/boot/platform/openfirmware/Jamfile

@@ -20,7 +20,6 @@ local platform_src =
 	menu.cpp
 	mmu.cpp
 	network.cpp
-	real_time_clock.cpp
 	start.cpp
 	support.cpp
 	video.cpp

src/system/boot/platform/openfirmware/real_time_clock.cpp

@@ -1,57 +0,0 @@
-/*
- * Copyright 2006, Ingo Weinhold <[email protected]>.
- * Copyright 2010, Andreas Färber <[email protected]>
- * All rights reserved. Distributed under the terms of the MIT License.
- */
-
-
-#include "real_time_clock.h"
-
-#include <stdio.h>
-
-#include <boot/kernel_args.h>
-#include <boot/stage2.h>
-#include <platform/openfirmware/devices.h>
-#include <platform/openfirmware/openfirmware.h>
-
-
-static int sHandle = OF_FAILED;
-
-
-status_t
-init_real_time_clock(void)
-{
-	// find RTC
-	intptr_t rtcCookie = 0;
-	if (of_get_next_device(&rtcCookie, 0, "rtc",
-			gKernelArgs.platform_args.rtc_path,
-			sizeof(gKernelArgs.platform_args.rtc_path)) != B_OK) {
-		printf("init_real_time_clock(): Found no RTC device!");
-		return B_ERROR;
-	}
-
-	sHandle = of_open(gKernelArgs.platform_args.rtc_path);
-	if (sHandle == OF_FAILED) {
-		printf("%s(): Could not open RTC device!\n", __func__);
-		return B_ERROR;
-	}
-
-	return B_OK;
-}
-
-
-bigtime_t
-real_time_clock_usecs(void)
-{
-	if (sHandle == OF_FAILED)
-		return OF_FAILED;
-	int second, minute, hour, day, month, year;
-	if (of_call_method(sHandle, "get-time", 0, 6, &year, &month, &day,
-			&hour, &minute, &second) == OF_FAILED)
-		return OF_FAILED;
-	int days = day;
-		// TODO: Apply algorithm from kernel
-		// to assure monotonically increasing date.
-	return (((days * 24 + hour) * 60ULL + minute) * 60ULL + second)
-		* 1000000ULL;
-}

src/system/boot/platform/openfirmware/real_time_clock.h

@@ -1,24 +0,0 @@
-/*
- * Copyright 2006, Ingo Weinhold <[email protected]>.
- * Copyright 2010, Andreas Färber <[email protected]>
- * All rights reserved. Distributed under the terms of the MIT License.
- */
-#ifndef OPENFIRMWARE_REAL_TIME_CLOCK_H
-#define OPENFIRMWARE_REAL_TIME_CLOCK_H
-
-
-#include <SupportDefs.h>
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-status_t init_real_time_clock(void);
-bigtime_t real_time_clock_usecs(void);
-
-#ifdef __cplusplus
-}   // extern "C"
-#endif
-
-#endif	/* OPENFIRMWARE_REAL_TIME_CLOCK_H */

src/system/boot/platform/openfirmware/start.cpp

@@ -20,7 +20,6 @@
 
 #include "console.h"
 #include "machine.h"
-#include "real_time_clock.h"
 
 
 #define HEAP_SIZE 65536
@@ -126,9 +125,6 @@ start(void *openFirmwareEntry)
 	if (boot_arch_cpu_init() != B_OK)
 		of_exit();
 
-	if (init_real_time_clock() != B_OK)
-		of_exit();
-
 	// check for key presses once
 	sBootOptions = 0;
 	int key = console_check_for_key();