sparc: fix bootloader build

- Add various missing jamfiles
- Add required implementation stubs
- Update openfirmware jamfiles for multiboot support
- Update linker rules for sparc loader

Change-Id: I2d06c7a4d33827f58d82946687003f9a0dcb1b7d
Reviewed-on: https://review.haiku-os.org/c/1329
Reviewed-by: waddlesplash <[email protected]>

headers/private/kernel/arch/sparc/arch_mmu.h

@@ -0,0 +1,15 @@
+/*
+** Copyright 2019, Adrien Destugues, [email protected]
+** Distributed under the terms of the MIT License.
+*/
+#ifndef _KERNEL_ARCH_SPARC_MMU_H
+#define _KERNEL_ARCH_SPARC_MMU_H
+
+
+#include <SupportDefs.h>
+#include <string.h>
+
+#include <arch_cpu.h>
+
+
+#endif	/* _KERNEL_ARCH_SPARC_MMU_H */

src/add-ons/kernel/bus_managers/config_manager/arch/sparc/Jamfile

@@ -0,0 +1,11 @@
+SubDir HAIKU_TOP src add-ons kernel bus_managers config_manager arch $(TARGET_ARCH) ;
+
+SubDirHdrs [ FDirName $(SUBDIR) $(DOTDOT) $(DOTDOT) ] ;
+
+UsePrivateHeaders kernel [ FDirName kernel arch $(TARGET_ARCH) ] ;
+
+KernelStaticLibrary config_manager_arch :
+	config_manager_arch.c
+	;
+
+

src/add-ons/kernel/bus_managers/config_manager/arch/sparc/config_manager_arch.c

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2009 Haiku, Inc.
+ * Distributed under the terms of the MIT License.
+ *
+ * arch-specific config manager
+ *
+ * Authors (in chronological order):
+ *              François Revol ([email protected])
+ */
+
+#include <OS.h>
+#include <config_manager.h>
+
+int config_manager_scan_hardcoded(struct device_info **info, int32 *count)
+{
+	return B_OK;
+}
+

src/add-ons/kernel/bus_managers/pci/arch/sparc/Jamfile

@@ -0,0 +1,16 @@
+SubDir HAIKU_TOP src add-ons kernel bus_managers pci arch sparc ;
+
+SubDirHdrs [ FDirName $(SUBDIR) $(DOTDOT) $(DOTDOT) ] ;
+UsePrivateHeaders kernel [ FDirName kernel arch $(TARGET_ARCH) ]
+	[ FDirName kernel boot platform $(HAIKU_BOOT_PLATFORM) ] ;
+
+SEARCH_SOURCE += [ FDirName $(SUBDIR) openfirmware ] ;
+
+KernelStaticLibrary pci_arch_bus_manager :
+	pci_controller.cpp
+	pci_io.c
+
+	# openfirmware
+	# TODO
+;
+

src/system/boot/arch/sparc/Jamfile

@@ -1,33 +1,29 @@
 SubDir HAIKU_TOP src system boot arch sparc ;
 
-{
-	local defines = _BOOT_MODE ;
-
-	defines = [ FDefines $(defines) ] ;
-	SubDirCcFlags $(defines) ;
-	SubDirC++Flags $(defines) -fno-rtti ;
-}
-
-
 local kernelLibArchObjects =
-	<src!system!kernel!lib!arch!$(TARGET_ARCH)>byteorder.o
 	<src!system!kernel!lib!arch!$(TARGET_ARCH)>memcpy.o
 	<src!system!kernel!lib!arch!$(TARGET_ARCH)>memset.o
 ;
 
-BootMergeObject boot_arch_$(TARGET_KERNEL_ARCH).o :
+local platform ;
-	debug_uart_8250.cpp
+for platform in [ MultiBootSubDirSetup openfirmware ] {
-	#arch_uart_8250.cpp
+    on $(platform) {
-	arch_elf.cpp
+		DEFINES += _BOOT_MODE ;
-	: # additional flags
-	:
-	$(kernelArchObjects)
-	$(kernelLibArchObjects)
-;
 
-SEARCH on [ FGristFiles arch_elf.cpp arch_uart_8250.cpp ]
+		BootMergeObject [ FGristFiles boot_arch_$(TARGET_KERNEL_ARCH).o ] :
-    = [ FDirName $(HAIKU_TOP) src system kernel arch $(TARGET_KERNEL_ARCH) ] ;
+			debug_uart_8250.cpp
+			#arch_uart_8250.cpp
+			arch_elf.cpp
+			: # additional flags
+			:
+			$(kernelArchObjects)
+			$(kernelLibArchObjects)
+		;
 
-SEARCH on [ FGristFiles debug_uart_8250.cpp ]
+		SEARCH on [ FGristFiles arch_elf.cpp arch_uart_8250.cpp ]
-	= [ FDirName $(HAIKU_TOP) src system kernel arch generic ] ;
+		    = [ FDirName $(HAIKU_TOP) src system kernel arch $(TARGET_KERNEL_ARCH) ] ;
 
+		SEARCH on [ FGristFiles debug_uart_8250.cpp ]
+			= [ FDirName $(HAIKU_TOP) src system kernel arch generic ] ;
+	}
+}

src/system/boot/platform/openfirmware/Jamfile

@@ -4,9 +4,14 @@ SubDirC++Flags -D_BOOT_MODE -fno-rtti ;
 
 UsePrivateHeaders [ FDirName graphics common ] ;
 
-SEARCH_SOURCE += [ FDirName $(HAIKU_TOP) src add-ons accelerants common ] ;
+{
+	local defines = _BOOT_MODE _BOOT_PLATFORM_OPENFIRMWARE ;
+	defines = [ FDefines $(defines) ] ;
+	SubDirCcFlags $(defines) ;
+	SubDirC++Flags $(defines) -fno-rtti ;
+}
 
-BootMergeObject boot_platform_openfirmware.o :
+local platform_src =
 	console.cpp
 	debug.cpp
 	devices.cpp
@@ -19,23 +24,41 @@ BootMergeObject boot_platform_openfirmware.o :
 	start.cpp
 	support.cpp
 	video.cpp
+;
 
+local kernel_src =
 	openfirmware.cpp
 	openfirmware_devices.cpp
+;
 
+local vesa_src =
 	# VESA/DDC EDID
 	decode_edid.c
 	dump_edid.c
-
-	:
-	:
-	boot_platform_generic.a
-	boot_platform_openfirmware_$(TARGET_ARCH).a
 ;
 
-SEARCH on [ FGristFiles $(genericPlatformSources) ]
+local platform ;
-	= [ FDirName $(HAIKU_TOP) src system boot platform generic ] ;
+for platform in [ MultiBootSubDirSetup openfirmware ] {
-SEARCH on [ FGristFiles openfirmware.cpp openfirmware_devices.cpp ]
+	on $(platform) {
-	= [ FDirName $(HAIKU_TOP) src system kernel platform openfirmware ] ;
+		BootMergeObject boot_platform_openfirmware.o :
+
+			$(platform_src)
+			$(kernel_src)
+			$(vesa_src)
+		:
+		:
+			boot_platform_generic_openfirmware.a
+			boot_platform_openfirmware_$(TARGET_ARCH).a
+		;
+
+#		SEARCH on [ FGristFiles $(genericPlatformSources) ]
+#			= [ FDirName $(HAIKU_TOP) src system boot platform generic ] ;
+		SEARCH on [ FGristFiles $(kernel_src) ]
+			= [ FDirName $(HAIKU_TOP) src system kernel platform openfirmware ] ;
+		SEARCH on [ FGristFiles $(vesa_src) ]
+			= [ FDirName $(HAIKU_TOP) src add-ons accelerants common ] ;
+
+	}
+}
 
 SubInclude HAIKU_TOP src system boot platform openfirmware arch ;

src/system/boot/platform/openfirmware/arch/sparc/Jamfile

@@ -1,6 +1,6 @@
 SubDir HAIKU_TOP src system boot platform openfirmware arch sparc ;
 
-SubDirHdrs $(HAIKU_TOP) src system boot platform $(TARGET_BOOT_PLATFORM) ;
+SubDirHdrs $(HAIKU_TOP) src system boot platform $(HAIKU_BOOT_PLATFORM) ;
 UsePrivateSystemHeaders ;
 UsePrivateHeaders kernel [ FDirName kernel arch $(TARGET_KERNEL_ARCH) ] 
 	[ FDirName kernel boot platform $(HAIKU_KERNEL_PLATFORM) ]
@@ -9,6 +9,9 @@ UsePrivateHeaders kernel [ FDirName kernel arch $(TARGET_KERNEL_ARCH) ]
 SubDirC++Flags -fno-rtti ;
 
 BootStaticLibrary boot_platform_openfirmware_sparc :
+	arch_start_kernel.S
+	cpu.cpp
+	mmu.cpp
 ;
 
 SEARCH on [ FGristFiles arch_cpu_asm.S arch_mmu.cpp ]

src/system/boot/platform/openfirmware/arch/sparc/arch_start_kernel.S

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2005, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+
+#define FUNCTION(x) .global x; .type x,@function; x
+
+/*	status_t arch_start_kernel(struct kernel_args *kernelArgs,
+		addr_t kernelEntry, addr_t kernelStackTop);
+
+	r3	- kernelArgs
+	r4	- kernelEntry
+	r5	- kernelStackTop
+*/
+FUNCTION(arch_start_kernel):
+	return

src/system/boot/platform/openfirmware/arch/sparc/cpu.cpp

@@ -0,0 +1,125 @@
+/*
+ * Copyright 2005, Ingo Weinhold <[email protected]>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+
+#include <boot/platform/openfirmware/platform_arch.h>
+
+#include <stdio.h>
+
+#include <KernelExport.h>
+
+#include <boot/kernel_args.h>
+#include <boot/stage2.h>
+#include <kernel.h>
+#include <platform/openfirmware/devices.h>
+#include <platform/openfirmware/openfirmware.h>
+
+#define TRACE_CPU
+#ifdef TRACE_CPU
+#	define TRACE(x) dprintf x
+#else
+#	define TRACE(x) ;
+#endif
+
+
+status_t
+boot_arch_cpu_init(void)
+{
+	int32 busFrequency = 0;
+
+	int root = of_finddevice("/");
+	if (root == OF_FAILED) {
+		printf("boot_arch_cpu_init(): Failed to open \"/\"!\n");
+		return B_ERROR;
+	}
+
+	of_getprop(root, "clock-frequency", &busFrequency, 4);
+		// we might find it in /cpus instead
+
+	// iterate through the "/cpus" node to find all CPUs
+	int cpus = of_finddevice("/cpus");
+	if (cpus == OF_FAILED) {
+		printf("boot_arch_cpu_init(): Failed to open \"/cpus\"!\n");
+		return B_ERROR;
+	}
+
+	char cpuPath[256];
+	int cookie = 0;
+	int cpuCount = 0;
+	while (of_get_next_device(&cookie, cpus, "cpu", cpuPath,
+			sizeof(cpuPath)) == B_OK) {
+		TRACE(("found CPU: %s\n", cpuPath));
+
+		// For the first CPU get the frequencies of CPU, bus, and time base.
+		// We assume they are the same for all CPUs.
+		if (cpuCount == 0) {
+			int cpu = of_finddevice(cpuPath);
+			if (cpu == OF_FAILED) {
+				printf("boot_arch_cpu_init: Failed get CPU device node!\n");
+				return B_ERROR;
+			}
+
+			// TODO: Does encode-int really encode quadlet (32 bit numbers)
+			// only?
+			int32 clockFrequency;
+			if (of_getprop(cpu, "clock-frequency", &clockFrequency, 4)
+					== OF_FAILED) {
+				printf("boot_arch_cpu_init: Failed to get CPU clock "
+					"frequency!\n");
+				return B_ERROR;
+			}
+			if (busFrequency == 0
+				&& of_getprop(cpu, "bus-frequency", &busFrequency, 4)
+					== OF_FAILED) {
+				printf("boot_arch_cpu_init: Failed to get bus clock "
+					"frequency!\n");
+				return B_ERROR;
+			}
+			int32 timeBaseFrequency;
+			if (of_getprop(cpu, "timebase-frequency", &timeBaseFrequency, 4)
+					== OF_FAILED) {
+				printf("boot_arch_cpu_init: Failed to get time base "
+					"frequency!\n");
+				return B_ERROR;
+			}
+
+			gKernelArgs.arch_args.cpu_frequency = clockFrequency;
+			gKernelArgs.arch_args.bus_frequency = busFrequency;
+			gKernelArgs.arch_args.time_base_frequency = timeBaseFrequency;
+
+			TRACE(("  CPU clock frequency: %d\n", clockFrequency));
+			TRACE(("  bus clock frequency: %d\n", busFrequency));
+			TRACE(("  time base frequency: %d\n", timeBaseFrequency));
+		}
+
+		cpuCount++;
+	}
+
+	if (cpuCount == 0) {
+		printf("boot_arch_cpu_init(): Found no CPUs!\n");
+		return B_ERROR;
+	}
+
+	gKernelArgs.num_cpus = cpuCount;
+
+	// allocate the kernel stacks (the memory stuff is already initialized
+	// at this point)
+	addr_t stack = (addr_t)arch_mmu_allocate((void*)0x80000000,
+		cpuCount * (KERNEL_STACK_SIZE + KERNEL_STACK_GUARD_PAGES * B_PAGE_SIZE),
+		B_READ_AREA | B_WRITE_AREA, false);
+	if (!stack) {
+		printf("boot_arch_cpu_init(): Failed to allocate kernel stack(s)!\n");
+		return B_NO_MEMORY;
+	}
+
+	for (int i = 0; i < cpuCount; i++) {
+		gKernelArgs.cpu_kstack[i].start = stack;
+		gKernelArgs.cpu_kstack[i].size = KERNEL_STACK_SIZE
+			+ KERNEL_STACK_GUARD_PAGES * B_PAGE_SIZE;
+		stack += KERNEL_STACK_SIZE + KERNEL_STACK_GUARD_PAGES * B_PAGE_SIZE;
+	}
+
+	return B_OK;
+}
+

src/system/boot/platform/openfirmware/arch/sparc/mmu.cpp

@@ -0,0 +1,457 @@
+/*
+ * Copyright 2003-2009, Axel Dörfler, [email protected].
+ * Copyright 2010-2011, Haiku, Inc. All Rights Reserved.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Axel Dörfler, [email protected].
+ *		Alexander von Gluck, [email protected]
+ */
+
+
+#include <OS.h>
+
+#include <platform_arch.h>
+#include <boot/addr_range.h>
+#include <boot/kernel_args.h>
+#include <boot/platform.h>
+#include <boot/stage2.h>
+#include <boot/stdio.h>
+#include <platform/openfirmware/openfirmware.h>
+#include <arch_cpu.h>
+#include <arch_mmu.h>
+#include <kernel.h>
+
+#include "support.h"
+
+
+// set protection to WIMGNPP: -----PP
+// PP:	00 - no access
+//		01 - read only
+//		10 - read/write
+//		11 - read only
+#define PAGE_READ_ONLY	0x01
+#define PAGE_READ_WRITE	0x02
+
+// NULL is actually a possible physical address...
+//#define PHYSINVAL ((void *)-1)
+#define PHYSINVAL NULL
+
+//#define TRACE_MMU
+#ifdef TRACE_MMU
+#   define TRACE(x...) dprintf(x)
+#else
+#   define TRACE(x...) ;
+#endif
+
+
+uint32 sPageTableHashMask;
+
+
+// begin and end of the boot loader
+extern "C" uint8 __text_begin;
+extern "C" uint8 _end;
+
+
+static status_t
+find_physical_memory_ranges(size_t &total)
+{
+	int memory;
+	dprintf("checking for memory...\n");
+	if (of_getprop(gChosen, "memory", &memory, sizeof(int)) == OF_FAILED)
+		return B_ERROR;
+	int package = of_instance_to_package(memory);
+
+	total = 0;
+
+	// Memory base addresses are provided in 32 or 64 bit flavors
+	// #address-cells and #size-cells matches the number of 32-bit 'cells'
+	// representing the length of the base address and size fields
+	int root = of_finddevice("/");
+	int32 regAddressCells = of_address_cells(root);
+	int32 regSizeCells = of_size_cells(root);
+	if (regAddressCells == OF_FAILED || regSizeCells == OF_FAILED) {
+		dprintf("finding base/size length counts failed, assume 32-bit.\n");
+		regAddressCells = 1;
+		regSizeCells = 1;
+	}
+
+	// NOTE : Size Cells of 2 is possible in theory... but I haven't seen it yet.
+	if (regAddressCells > 2 || regSizeCells > 1) {
+		panic("%s: Unsupported OpenFirmware cell count detected.\n"
+		"Address Cells: %" B_PRId32 "; Size Cells: %" B_PRId32
+		" (CPU > 64bit?).\n", __func__, regAddressCells, regSizeCells);
+		return B_ERROR;
+	}
+
+	// On 64-bit PowerPC systems (G5), our mem base range address is larger
+	if (regAddressCells == 2) {
+		struct of_region<uint64> regions[64];
+		int count = of_getprop(package, "reg", regions, sizeof(regions));
+		if (count == OF_FAILED)
+			count = of_getprop(memory, "reg", regions, sizeof(regions));
+		if (count == OF_FAILED)
+			return B_ERROR;
+		count /= sizeof(regions[0]);
+
+		for (int32 i = 0; i < count; i++) {
+			if (regions[i].size <= 0) {
+				dprintf("%d: empty region\n", i);
+				continue;
+			}
+			dprintf("%" B_PRIu32 ": base = %" B_PRIu64 ","
+				"size = %" B_PRIu32 "\n", i, regions[i].base, regions[i].size);
+
+			total += regions[i].size;
+
+			if (insert_physical_memory_range((addr_t)regions[i].base,
+					regions[i].size) != B_OK) {
+				dprintf("cannot map physical memory range "
+					"(num ranges = %" B_PRIu32 ")!\n",
+					gKernelArgs.num_physical_memory_ranges);
+				return B_ERROR;
+			}
+		}
+		return B_OK;
+	}
+
+	// Otherwise, normal 32-bit PowerPC G3 or G4 have a smaller 32-bit one
+	struct of_region<uint32> regions[64];
+	int count = of_getprop(package, "reg", regions, sizeof(regions));
+	if (count == OF_FAILED)
+		count = of_getprop(memory, "reg", regions, sizeof(regions));
+	if (count == OF_FAILED)
+		return B_ERROR;
+	count /= sizeof(regions[0]);
+
+	for (int32 i = 0; i < count; i++) {
+		if (regions[i].size <= 0) {
+			dprintf("%d: empty region\n", i);
+			continue;
+		}
+		dprintf("%" B_PRIu32 ": base = %" B_PRIu32 ","
+			"size = %" B_PRIu32 "\n", i, regions[i].base, regions[i].size);
+
+		total += regions[i].size;
+
+		if (insert_physical_memory_range((addr_t)regions[i].base,
+				regions[i].size) != B_OK) {
+			dprintf("cannot map physical memory range "
+				"(num ranges = %" B_PRIu32 ")!\n",
+				gKernelArgs.num_physical_memory_ranges);
+			return B_ERROR;
+		}
+	}
+
+	return B_OK;
+}
+
+
+static bool
+is_virtual_allocated(void *address, size_t size)
+{
+	uint64 foundBase;
+	return !get_free_address_range(gKernelArgs.virtual_allocated_range,
+		gKernelArgs.num_virtual_allocated_ranges, (addr_t)address, size,
+		&foundBase) || foundBase != (addr_t)address;
+}
+
+
+static bool
+is_physical_allocated(void *address, size_t size)
+{
+	uint64 foundBase;
+	return !get_free_address_range(gKernelArgs.physical_allocated_range,
+		gKernelArgs.num_physical_allocated_ranges, (addr_t)address, size,
+		&foundBase) || foundBase != (addr_t)address;
+}
+
+
+static bool
+is_physical_memory(void *address, size_t size)
+{
+	return is_address_range_covered(gKernelArgs.physical_memory_range,
+		gKernelArgs.num_physical_memory_ranges, (addr_t)address, size);
+}
+
+
+static bool
+is_physical_memory(void *address)
+{
+	return is_physical_memory(address, 1);
+}
+
+
+static void
+map_page(void *virtualAddress, void *physicalAddress, uint8 mode)
+{
+	panic("%s: out of page table entries!\n", __func__);
+}
+
+
+static void
+map_range(void *virtualAddress, void *physicalAddress, size_t size, uint8 mode)
+{
+	for (uint32 offset = 0; offset < size; offset += B_PAGE_SIZE) {
+		map_page((void *)(intptr_t(virtualAddress) + offset),
+			(void *)(intptr_t(physicalAddress) + offset), mode);
+	}
+}
+
+
+static void *
+find_physical_memory_range(size_t size)
+{
+	for (uint32 i = 0; i < gKernelArgs.num_physical_memory_ranges; i++) {
+		if (gKernelArgs.physical_memory_range[i].size > size)
+			return (void *)(addr_t)gKernelArgs.physical_memory_range[i].start;
+	}
+	return PHYSINVAL;
+}
+
+
+static void *
+find_free_physical_range(size_t size)
+{
+	// just do a simple linear search at the end of the allocated
+	// ranges (dumb memory allocation)
+	if (gKernelArgs.num_physical_allocated_ranges == 0) {
+		if (gKernelArgs.num_physical_memory_ranges == 0)
+			return PHYSINVAL;
+
+		return find_physical_memory_range(size);
+	}
+
+	for (uint32 i = 0; i < gKernelArgs.num_physical_allocated_ranges; i++) {
+		void *address
+			= (void *)(addr_t)(gKernelArgs.physical_allocated_range[i].start
+				+ gKernelArgs.physical_allocated_range[i].size);
+		if (!is_physical_allocated(address, size)
+			&& is_physical_memory(address, size))
+			return address;
+	}
+	return PHYSINVAL;
+}
+
+
+static void *
+find_free_virtual_range(void *base, size_t size)
+{
+	if (base && !is_virtual_allocated(base, size))
+		return base;
+
+	void *firstFound = NULL;
+	void *firstBaseFound = NULL;
+	for (uint32 i = 0; i < gKernelArgs.num_virtual_allocated_ranges; i++) {
+		void *address
+			= (void *)(addr_t)(gKernelArgs.virtual_allocated_range[i].start
+				+ gKernelArgs.virtual_allocated_range[i].size);
+		if (!is_virtual_allocated(address, size)) {
+			if (!base)
+				return address;
+
+			if (firstFound == NULL)
+				firstFound = address;
+			if (address >= base
+				&& (firstBaseFound == NULL || address < firstBaseFound)) {
+				firstBaseFound = address;
+			}
+		}
+	}
+	return (firstBaseFound ? firstBaseFound : firstFound);
+}
+
+
+extern "C" void *
+arch_mmu_allocate(void *_virtualAddress, size_t size, uint8 _protection,
+	bool exactAddress)
+{
+	// we only know page sizes
+	size = ROUNDUP(size, B_PAGE_SIZE);
+
+	uint8 protection = 0;
+	if (_protection & B_WRITE_AREA)
+		protection = PAGE_READ_WRITE;
+	else
+		protection = PAGE_READ_ONLY;
+
+	// If no address is given, use the KERNEL_BASE as base address, since
+	// that avoids trouble in the kernel, when we decide to keep the region.
+	void *virtualAddress = _virtualAddress;
+	if (!virtualAddress)
+		virtualAddress = (void*)KERNEL_BASE;
+
+	// find free address large enough to hold "size"
+	virtualAddress = find_free_virtual_range(virtualAddress, size);
+	if (virtualAddress == NULL)
+		return NULL;
+
+	// fail if the exact address was requested, but is not free
+	if (exactAddress && _virtualAddress && virtualAddress != _virtualAddress) {
+		dprintf("arch_mmu_allocate(): exact address requested, but virtual "
+			"range (base: %p, size: %" B_PRIuSIZE ") is not free.\n",
+			_virtualAddress, size);
+		return NULL;
+	}
+
+	// we have a free virtual range for the allocation, now
+	// have a look for free physical memory as well (we assume
+	// that a) there is enough memory, and b) failing is fatal
+	// so that we don't have to optimize for these cases :)
+
+	void *physicalAddress = find_free_physical_range(size);
+	if (physicalAddress == PHYSINVAL) {
+		dprintf("arch_mmu_allocate(base: %p, size: %" B_PRIuSIZE ") "
+			"no free physical address\n", virtualAddress, size);
+		return NULL;
+	}
+
+	// everything went fine, so lets mark the space as used.
+
+	dprintf("mmu_alloc: va %p, pa %p, size %" B_PRIuSIZE "\n", virtualAddress,
+		physicalAddress, size);
+	insert_virtual_allocated_range((addr_t)virtualAddress, size);
+	insert_physical_allocated_range((addr_t)physicalAddress, size);
+
+	map_range(virtualAddress, physicalAddress, size, protection);
+
+	return virtualAddress;
+}
+
+
+extern "C" status_t
+arch_mmu_free(void *address, size_t size)
+{
+	// TODO: implement freeing a region!
+	return B_OK;
+}
+
+
+//	#pragma mark - OpenFirmware callbacks and public API
+
+
+static int
+map_callback(struct of_arguments *args)
+{
+	void *physicalAddress = (void *)args->Argument(0);
+	void *virtualAddress = (void *)args->Argument(1);
+	int length = args->Argument(2);
+	int mode = args->Argument(3);
+	intptr_t &error = args->ReturnValue(0);
+
+	// insert range in physical allocated if needed
+
+	if (is_physical_memory(physicalAddress)
+		&& insert_physical_allocated_range((addr_t)physicalAddress, length)
+			!= B_OK) {
+		error = -1;
+		return OF_FAILED;
+	}
+
+	// insert range in virtual allocated
+
+	if (insert_virtual_allocated_range((addr_t)virtualAddress, length)
+			!= B_OK) {
+		error = -2;
+		return OF_FAILED;
+	}
+
+	// map range into the page table
+
+	map_range(virtualAddress, physicalAddress, length, mode);
+
+	return B_OK;
+}
+
+
+static int
+unmap_callback(struct of_arguments *args)
+{
+/*	void *address = (void *)args->Argument(0);
+	int length = args->Argument(1);
+	int &error = args->ReturnValue(0);
+*/
+	// TODO: to be implemented
+
+	return OF_FAILED;
+}
+
+
+static int
+translate_callback(struct of_arguments *args)
+{
+	// could not find the translation
+	return OF_FAILED;
+}
+
+
+static int
+alloc_real_mem_callback(struct of_arguments *args)
+{
+/*	addr_t minAddress = (addr_t)args->Argument(0);
+	addr_t maxAddress = (addr_t)args->Argument(1);
+	int length = args->Argument(2);
+	int mode = args->Argument(3);
+	int &error = args->ReturnValue(0);
+	int &physicalAddress = args->ReturnValue(1);
+*/
+	// ToDo: to be implemented
+
+	return OF_FAILED;
+}
+
+
+/** Dispatches the callback to the responsible function */
+
+static int
+callback(struct of_arguments *args)
+{
+	const char *name = args->name;
+	TRACE("OF CALLBACK: %s\n", name);
+
+	if (!strcmp(name, "map"))
+		return map_callback(args);
+	else if (!strcmp(name, "unmap"))
+		return unmap_callback(args);
+	else if (!strcmp(name, "translate"))
+		return translate_callback(args);
+	else if (!strcmp(name, "alloc-real-mem"))
+		return alloc_real_mem_callback(args);
+
+	return OF_FAILED;
+}
+
+
+extern "C" status_t
+arch_set_callback(void)
+{
+	// set OpenFirmware callbacks - it will ask us for memory after that
+	// instead of maintaining it itself
+
+	void *oldCallback = NULL;
+	if (of_call_client_function("set-callback", 1, 1, &callback, &oldCallback)
+			== OF_FAILED) {
+		dprintf("Error: OpenFirmware set-callback failed\n");
+		return B_ERROR;
+	}
+	TRACE("old callback = %p; new callback = %p\n", oldCallback, callback);
+
+	return B_OK;
+}
+
+
+extern "C" status_t
+arch_mmu_init(void)
+{
+	// get map of physical memory (fill in kernel_args structure)
+
+	size_t total;
+	if (find_physical_memory_ranges(total) != B_OK) {
+		dprintf("Error: could not find physical memory ranges!\n");
+		return B_ERROR;
+	}
+	dprintf("total physical memory = %luMB\n", total / (1024 * 1024));
+
+	return B_OK;
+}
+

src/system/ldscripts/sparc/boot_loader_openfirmware.ld

@@ -0,0 +1,45 @@
+OUTPUT_FORMAT("elf64-sparc")
+OUTPUT_ARCH(sparc:v9)
+
+ENTRY(_start)
+
+SECTIONS
+{
+	. = 0x202000 + SIZEOF_HEADERS;
+
+	__text_begin = .;
+
+	/* text/read-only data */
+	.text :	{ *(.text .text.* .gnu.linkonce.t.*)
+	          *(.rodata .rodata.* .gnu.linkonce.r.*)
+	          *(.sdata2) }
+
+	/* writable data  */
+	/* align to the same offset in the next page (for performance reasons
+	   (not that it really matters in the boot loader)) */
+	. = ALIGN(0x1000) + 0x1000 + (. & (0x1000 - 1));
+
+	.data : {
+		__ctor_list = .;
+		*(.ctors)
+		__ctor_end = .;
+
+		__data_start = .;
+		*(.data .gnu.linkonce.d.*)
+		*(.data.rel.ro.local .data.rel.ro*)
+		*(.got .got2)
+		*(.sdata .sdata.* .gnu.linkonce.s.* .fixup) }
+
+	/* uninitialized data (in same segment as writable data) */
+	__bss_start = .;
+	.bss : { *(.sbss .sbss.* .gnu.linkonce.sb.*)
+
+		*(.bss .bss.* .gnu.linkonce.b.*)
+		. = ALIGN(0x1000);
+	}
+
+	_end = . ;
+
+	/* Strip unnecessary stuff */
+	/DISCARD/ : { *(.comment .note .eh_frame .dtors .debug_* .gnu.attributes) }
+}

src/system/libroot/posix/string/arch/sparc/Jamfile

@@ -1,10 +1,17 @@
 SubDir HAIKU_TOP src system libroot posix string arch sparc ;
 
-UsePrivateSystemHeaders ;
+local architectureObject ;
+for architectureObject in [ MultiArchSubDirSetup sparc ] {
+	on $(architectureObject) {
+		local architecture = $(TARGET_PACKAGING_ARCH) ;
 
-SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
+		UsePrivateSystemHeaders ;
 
-MergeObject <$(TARGET_ARCH)>posix_string_arch_$(TARGET_ARCH).o :
+		SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
-	memcpy.c
+
-	memset.c
+		MergeObject <$(TARGET_ARCH)>posix_string_arch_$(TARGET_ARCH).o :
-;
+			memcpy.c
+			memset.c
+		;
+	}
+}

src/system/runtime_loader/Jamfile

@@ -7,7 +7,7 @@ if $(TARGET_ARCH) = x86_64
 }
 
 local architectureObject ;
-for architectureObject in [ MultiArchSubDirSetup ] {
+for architectureObject in [ MultiArchSubDirSetup sparc ] {
 	on $(architectureObject) {
 		local architecture = $(TARGET_PACKAGING_ARCH) ;
 

src/system/runtime_loader/arch/sparc/Jamfile

@@ -0,0 +1,21 @@
+SubDir HAIKU_TOP src system runtime_loader arch sparc ;
+
+local architectureObject ;
+for architectureObject in [ MultiArchSubDirSetup sparc ] {
+	on $(architectureObject) {
+		local architecture = $(TARGET_PACKAGING_ARCH) ;
+
+		UsePrivateHeaders runtime_loader ;
+		UsePrivateSystemHeaders ;
+
+		SubDirHdrs [ FDirName $(SUBDIR) $(DOTDOT) $(DOTDOT) ] ;
+
+		StaticLibrary <$(architecture)>libruntime_loader_$(TARGET_ARCH).a :
+			arch_relocate.cpp
+			:
+			<src!system!libroot!os!arch!$(TARGET_ARCH)!$(architecture)>thread.o
+
+			<src!system!libroot!posix!string!arch!$(TARGET_ARCH)!$(architecture)>memset.o
+		;
+	}
+}

src/system/runtime_loader/arch/sparc/arch_relocate.cpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2018, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Ithamar R. Adema <[email protected]>
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "runtime_loader_private.h"
+
+#include <runtime_loader.h>
+
+//#define TRACE_RLD
+#ifdef TRACE_RLD
+#	define TRACE(x) dprintf x
+#else
+#	define TRACE(x) ;
+#endif
+
+status_t
+arch_relocate_image(image_t *rootImage, image_t *image,
+	SymbolLookupCache* cache)
+{
+	debugger("arch_relocate_image: Not Yet Implemented!");
+	return B_OK;
+}