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Now uses the OF root node properties "model" and "device_type" to get

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and idea about the underlying hardware (needed at other places).
Calls arch_set_callback() right after MMU takeover.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5204 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2003-10-28 21:24:28 +00:00
parent 6bf336d531
commit c9593d2253
2 changed files with 61 additions and 0 deletions
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23
src/kernel/boot/platform/openfirmware/machine.h Normal file
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@ -0,0 +1,23 @@
/*
** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the OpenBeOS License.
*/
#ifndef MACHINE_H
#define MACHINE_H
#include <SupportDefs.h>
#define MACHINE_UNKNOWN 0x0000
#define MACHINE_CHRP 0x0001
#define MACHINE_MAC 0x0002
#define MACHINE_PEGASOS 0x0100
extern uint32 gMachine;
// stores the machine type
#endif /* MACHINE_H */

38
src/kernel/boot/platform/openfirmware/start.c
View File

@ -13,6 +13,7 @@
#include "openfirmware.h" #include "openfirmware.h"
#include "console.h" #include "console.h"
#include "machine.h"
#define HEAP_SIZE 32768 #define HEAP_SIZE 32768
@ -27,6 +28,8 @@ extern void (*__ctor_end)(void);
extern uint8 __bss_start; extern uint8 __bss_start;
extern uint8 _end; extern uint8 _end;
uint32 gMachine;
static void static void
call_ctors(void) call_ctors(void)
@ -46,6 +49,34 @@ clear_bss(void)
} }
static void
determine_machine(void)
{
int root = of_finddevice("/");
char buffer[64];
int length;
if ((length = of_getprop(root, "device_type", buffer, sizeof(buffer) - 1)) == OF_FAILED)
return;
buffer[length] = '\0';
// ToDo: add more, and be as generic as possible
gMachine = MACHINE_UNKNOWN;
if (!strcasecmp("chrp", buffer))
gMachine = MACHINE_CHRP;
else if (!strcasecmp("bootrom", buffer))
gMachine = MACHINE_MAC;
if ((length = of_getprop(root, "model", buffer, sizeof(buffer) - 1)) == OF_FAILED)
return;
buffer[length] = '\0';
if (!strcasecmp("pegasos", buffer))
gMachine |= MACHINE_PEGASOS;
}
void void
_start(uint32 _unused1, uint32 _unused3, void *openFirmwareEntry) _start(uint32 _unused1, uint32 _unused3, void *openFirmwareEntry)
{ {
@ -68,8 +99,15 @@ start(void *openFirmwareEntry)
args.heap_size = HEAP_SIZE; args.heap_size = HEAP_SIZE;
of_init(openFirmwareEntry); of_init(openFirmwareEntry);
determine_machine();
console_init(); console_init();
// Initialize and take over MMU and set the OpenFirmware callbacks - it
// will ask us for memory after that instead of maintaining it itself
// (the kernel will need to adjust the callback later on as well)
arch_mmu_init(); arch_mmu_init();
arch_set_callback();
main(&args); main(&args);
// if everything wents fine, main() never returns // if everything wents fine, main() never returns