added 1 changeset to branch
'refs/remotes/mmu_man-github/rebasing-ppc-qemu-openbios'
old head: 7225b933f58a3309bb9b1648945e5262016b19b1
new head: 3087b7b98c8915d13dbf4af3d1e7b7149f15d87d
overview: https://github.com/mmuman/haiku/compare/7225b933f58a...3087b7b98c89
----------------------------------------------------------------------------
3087b7b98c89: WIP: PPC: Try to get QEMU to boot
[ François Revol <revol@xxxxxxx> ]
----------------------------------------------------------------------------
Commit: 3087b7b98c8915d13dbf4af3d1e7b7149f15d87d
Author: François Revol <revol@xxxxxxx>
Date: Mon Nov 4 03:11:51 2013 UTC
----------------------------------------------------------------------------
8 files changed, 68 insertions(+), 6 deletions(-)
headers/private/kernel/arch/ppc/arch_kernel.h | 3 ++
src/system/boot/loader/main.cpp | 2 +-
.../boot/platform/openfirmware/arch/ppc/cpu.cpp | 2 +-
.../boot/platform/openfirmware/arch/ppc/mmu.cpp | 55 ++++++++++++++++++--
.../platform/openfirmware/real_time_clock.cpp | 5 ++
src/system/boot/platform/openfirmware/start.cpp | 3 ++
src/system/kernel/main.cpp | 2 +-
.../platform/openfirmware/openfirmware.cpp | 2 +
----------------------------------------------------------------------------
diff --git a/headers/private/kernel/arch/ppc/arch_kernel.h
b/headers/private/kernel/arch/ppc/arch_kernel.h
index 803a9aa..92ab819 100644
--- a/headers/private/kernel/arch/ppc/arch_kernel.h
+++ b/headers/private/kernel/arch/ppc/arch_kernel.h
@@ -12,6 +12,9 @@
#define KERNEL_SIZE 0x80000000
#define KERNEL_TOP (KERNEL_BASE + (KERNEL_SIZE - 1))
+// XXX: QEMU OpenBIOS maps IO at the default address...
+#define KERNEL_LOAD_BASE 0x82000000
+
/*
** User space layout is a little special:
** The user space does not completely cover the space not covered by the
kernel.
diff --git a/src/system/boot/loader/main.cpp b/src/system/boot/loader/main.cpp
index bb7a063..5b2e44f 100644
--- a/src/system/boot/loader/main.cpp
+++ b/src/system/boot/loader/main.cpp
@@ -18,7 +18,7 @@
#include "file_systems/packagefs/packagefs.h"
-//#define TRACE_MAIN
+#define TRACE_MAIN
#ifdef TRACE_MAIN
# define TRACE(x) dprintf x
#else
diff --git a/src/system/boot/platform/openfirmware/arch/ppc/cpu.cpp
b/src/system/boot/platform/openfirmware/arch/ppc/cpu.cpp
index a2a4b2a..df31e81 100644
--- a/src/system/boot/platform/openfirmware/arch/ppc/cpu.cpp
+++ b/src/system/boot/platform/openfirmware/arch/ppc/cpu.cpp
@@ -105,7 +105,7 @@ boot_arch_cpu_init(void)
// allocate the kernel stacks (the memory stuff is already initialized
// at this point)
- addr_t stack = (addr_t)arch_mmu_allocate((void*)0x80000000,
+ addr_t stack = (addr_t)arch_mmu_allocate(NULL,
cpuCount * (KERNEL_STACK_SIZE + KERNEL_STACK_GUARD_PAGES *
B_PAGE_SIZE),
B_READ_AREA | B_WRITE_AREA, false);
if (!stack) {
diff --git a/src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp
b/src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp
index a89fec7..d2004fa 100644
--- a/src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp
+++ b/src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp
@@ -37,7 +37,7 @@
//#define PHYSINVAL ((void *)-1)
#define PHYSINVAL NULL
-//#define TRACE_MMU
+#define TRACE_MMU
#ifdef TRACE_MMU
# define TRACE(x...) dprintf(x)
#else
@@ -49,6 +49,8 @@ segment_descriptor sSegments[16];
page_table_entry_group *sPageTable;
uint32 sPageTableHashMask;
+static const size_t kMaxKernelSize = 0x1000000; // 16 MB for
the kernel
+
// begin and end of the boot loader
extern "C" uint8 __text_begin;
@@ -485,6 +487,8 @@ extern "C" void *
arch_mmu_allocate(void *_virtualAddress, size_t size, uint8 _protection,
bool exactAddress)
{
+ dprintf("arch_mmu_allocate(%p, size %" B_PRIuSIZE ", %08x)\n",
+ _virtualAddress, size, _protection);
// we only know page sizes
size = ROUNDUP(size, B_PAGE_SIZE);
@@ -498,7 +502,7 @@ arch_mmu_allocate(void *_virtualAddress, size_t size, uint8
_protection,
// that avoids trouble in the kernel, when we decide to keep the region.
void *virtualAddress = _virtualAddress;
if (!virtualAddress)
- virtualAddress = (void*)KERNEL_BASE;
+ virtualAddress = (void*)(KERNEL_LOAD_BASE + kMaxKernelSize);
// find free address large enough to hold "size"
virtualAddress = find_free_virtual_range(virtualAddress, size);
@@ -575,6 +579,7 @@ map_callback(struct of_arguments *args)
int length = args->Argument(2);
int mode = args->Argument(3);
int &error = args->ReturnValue(0);
+dprintf("map_callback(%p)\n", args);
// insert range in physical allocated if needed
@@ -840,7 +845,7 @@ arch_mmu_init(void)
#if 0
block_address_translation bats[8];
- getibats(bats);
+ getibats((int *)bats);
for (int32 i = 0; i < 8; i++) {
printf("page index %u, length %u, ppn %u\n", bats[i].page_index,
bats[i].length, bats[i].physical_block_number);
@@ -874,6 +879,21 @@ arch_mmu_init(void)
physicalTable = table;
}
+ // QEMU OpenBIOS
+/*
+ insert_physical_allocated_range(0xfff00000, 0x00100000);
+ insert_virtual_allocated_range(0xfff00000, 0x00100000);
+ map_range((void *)0xfff00000, (void *)0xfff00000,
+ 0x00100000, PAGE_READ_WRITE);
+*/
+ // QEMU OpenBIOS PCI IO space
+
+ insert_physical_allocated_range(0x80000000, 0x04000000);
+ insert_virtual_allocated_range(0x80000000, 0x04000000);
+ map_range((void *)0x80000000, (void *)0x80000000,
+ 0x04000000, PAGE_READ_WRITE);
+
+
if (exceptionHandlers == (void *)-1) {
// TODO: create mapping for the exception handlers
dprintf("Error: no mapping for the exception handlers!\n");
@@ -882,17 +902,45 @@ arch_mmu_init(void)
// Set the Open Firmware memory callback. From now on the Open Firmware
// will ask us for memory.
arch_set_callback();
+dprintf("<arch_set_callback\n");
+
+/*
+ if (!realMode) {
+ block_address_translation bat;
+
+ bat.length = BAT_LENGTH_256MB;
+ bat.kernel_valid = true;
+ bat.memory_coherent = true;
+ bat.protection = BAT_READ_WRITE;
+
+ set_ibat0(&bat);
+ set_dbat0(&bat);
+ isync();
+ }
+*/
+
+
+// dprintf("set_msr(%08lx)\n", get_msr() &
+// ~(MSR_INST_ADDRESS_TRANSLATION | MSR_DATA_ADDRESS_TRANSLATION));
+ set_msr(get_msr() &
+ ~(/*MSR_MACHINE_CHECK_ENABLED|*/MSR_INST_ADDRESS_TRANSLATION |
MSR_DATA_ADDRESS_TRANSLATION));
// set up new page table and turn on translation again
for (int32 i = 0; i < 16; i++) {
+ //for (int32 i = 15/*XXX:0*/; i > -1; i--) {
+//dprintf("ppc_set_segment_register(%d, %lx)\n", i, sSegments[i]);
ppc_set_segment_register((void *)(i * 0x10000000),
sSegments[i]);
// one segment describes 256 MB of memory
}
+//dprintf("ppc_set_page_table()\n");
ppc_set_page_table(physicalTable, tableSize);
+//dprintf("invalidate_tlb()\n");
invalidate_tlb();
+
+/*
if (!realMode) {
// clear BATs
reset_ibats();
@@ -900,6 +948,7 @@ arch_mmu_init(void)
ppc_sync();
isync();
}
+*/
set_msr(MSR_MACHINE_CHECK_ENABLED | MSR_FP_AVAILABLE
| MSR_INST_ADDRESS_TRANSLATION | MSR_DATA_ADDRESS_TRANSLATION);
diff --git a/src/system/boot/platform/openfirmware/real_time_clock.cpp
b/src/system/boot/platform/openfirmware/real_time_clock.cpp
index 3ea8bf5..6204473 100644
--- a/src/system/boot/platform/openfirmware/real_time_clock.cpp
+++ b/src/system/boot/platform/openfirmware/real_time_clock.cpp
@@ -8,6 +8,7 @@
#include "real_time_clock.h"
#include <stdio.h>
+#include <KernelExport.h>
#include <boot/kernel_args.h>
#include <boot/stage2.h>
@@ -21,16 +22,20 @@ static int sHandle = OF_FAILED;
status_t
init_real_time_clock(void)
{
+ return B_OK;
// find RTC
int rtcCookie = 0;
+dprintf("of_get_next_device(&(%d),'rtc')\n", rtcCookie);
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;
}
+dprintf("of_get_next_device(rtc): '%s'\n", gKernelArgs.platform_args.rtc_path);
sHandle = of_open(gKernelArgs.platform_args.rtc_path);
+dprintf("of_open(rtc): %d\n", sHandle);
if (sHandle == OF_FAILED) {
printf("%s(): Could not open RTC device!\n", __func__);
return B_ERROR;
diff --git a/src/system/boot/platform/openfirmware/start.cpp
b/src/system/boot/platform/openfirmware/start.cpp
index 2938db2..186135d 100644
--- a/src/system/boot/platform/openfirmware/start.cpp
+++ b/src/system/boot/platform/openfirmware/start.cpp
@@ -187,8 +187,10 @@ start(void *openFirmwareEntry)
if (boot_arch_cpu_init() != B_OK)
of_exit();
+dprintf("boot_arch_cpu_init done\n");
if (init_real_time_clock() != B_OK)
of_exit();
+dprintf("init_real_time_clock done\n");
// check for key presses once
sBootOptions = 0;
@@ -203,6 +205,7 @@ start(void *openFirmwareEntry)
gKernelArgs.platform_args.openfirmware_entry = openFirmwareEntry;
+dprintf("call main()\n");
main(&args);
// if everything goes fine, main() never returns
diff --git a/src/system/kernel/main.cpp b/src/system/kernel/main.cpp
index f3a0a9b..361bedc 100644
--- a/src/system/kernel/main.cpp
+++ b/src/system/kernel/main.cpp
@@ -59,7 +59,7 @@
#include "vm/VMAnonymousCache.h"
-//#define TRACE_BOOT
+#define TRACE_BOOT
#ifdef TRACE_BOOT
# define TRACE(x...) dprintf("INIT: " x)
#else
diff --git a/src/system/kernel/platform/openfirmware/openfirmware.cpp
b/src/system/kernel/platform/openfirmware/openfirmware.cpp
index 1f1d997..3c2139f 100644
--- a/src/system/kernel/platform/openfirmware/openfirmware.cpp
+++ b/src/system/kernel/platform/openfirmware/openfirmware.cpp
@@ -6,6 +6,7 @@
#include <platform/openfirmware/openfirmware.h>
#include <stdarg.h>
+#include <KernelExport.h>
// OpenFirmware entry function
@@ -505,6 +506,7 @@ of_release(void *virtualAddress, int size)
void *
of_claim(void *virtualAddress, int size, int align)
{
+dprintf("OF at %p\n", gCallOpenFirmware);
struct {
const char *name;
int num_args;
