Macintosh-SW
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powerpc-ofw-boot
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device tree methods

This commit is contained in:
aramya 2023-07-01 12:07:36 +01:00
parent 3de2240706
commit 3c40f50fb6
4 changed files with 288 additions and 5 deletions
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2
Makefile
View File

@ -30,7 +30,7 @@ kernel.elf: $(OBJECTS)
$(PPC)-ld -Ttext=0x200000 -Tdata=0x300100 $^ -o $@
%.elf: %.c
$(PPC)-gcc -c $< -o $@
$(PPC)-gcc -I include -c $< -o $@
%.elf: %.s
$(PPC)-as -c $< -o $@

4
entry/boot.c
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@ -1,4 +1,6 @@
#include "boot.h"
void (*ofw)();
void __eabi();
void __stack_chk_fail_local(void)
{
}

283
entry/ofw.c
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@ -1,3 +1,5 @@
#include <ofw.h>
extern void (*ofw)();
int ofw_test(char* name)
@ -22,3 +24,284 @@ int ofw_test(char* name)
return ofw_arg.ret;
}
phandle child(phandle _child)
{
struct
{
char* service;
int n_args;
int n_rets;
phandle arg;
phandle ret;
} ofw_arg;
char _service[6] = "child";
ofw_arg.service = _service;
ofw_arg.n_args = 1;
ofw_arg.n_rets = 1;
ofw_arg.arg = _child;
ofw(&ofw_arg);
return ofw_arg.ret;
}
phandle parent(phandle _parent)
{
struct
{
char* service;
int n_args;
int n_rets;
phandle arg;
phandle ret;
} ofw_arg;
char _service[7] = "parent";
ofw_arg.service = _service;
ofw_arg.n_args = 1;
ofw_arg.n_rets = 1;
ofw_arg.arg = _parent;
ofw(&ofw_arg);
return ofw_arg.ret;
}
phandle instance_to_package(ihandle _instance)
{
struct
{
char* service;
int n_args;
int n_rets;
ihandle arg;
phandle ret;
} ofw_arg;
char _service[20] = "instance-to-package";
ofw_arg.service = _service;
ofw_arg.n_args = 1;
ofw_arg.n_rets = 1;
ofw_arg.arg = _instance;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int getproplen(phandle node, char* name)
{
struct
{
char* service;
int n_args;
int n_rets;
phandle arg1;
char* arg2;
int ret;
} ofw_arg;
char _service[11] = "getproplen";
ofw_arg.service = _service;
ofw_arg.n_args = 2;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = node;
ofw_arg.arg2 = name;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int getprop(phandle node, char* name, uint8_t* buf, int buflen)
{
struct
{
char* service;
int n_args;
int n_rets;
phandle arg1;
char* arg2;
uint8_t* arg3;
int arg4;
int ret;
} ofw_arg;
char _service[8] = "getprop";
ofw_arg.service = _service;
ofw_arg.n_args = 4;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = node;
ofw_arg.arg2 = name;
ofw_arg.arg3 = buf;
ofw_arg.arg4 = buflen;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int nextprop(phandle node, char* previous, uint8_t* buf)
{
struct
{
char* service;
int n_args;
int n_rets;
phandle arg1;
char* arg2;
uint8_t* arg3;
int ret;
} ofw_arg;
char _service[9] = "nextprop";
ofw_arg.service = _service;
ofw_arg.n_args = 3;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = node;
ofw_arg.arg2 = previous;
ofw_arg.arg3 = buf;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int setprop(phandle node, char* name, uint8_t* buf, int len)
{
struct
{
char* service;
int n_args;
int n_rets;
phandle arg1;
char* arg2;
uint8_t* arg3;
int arg4;
int ret;
} ofw_arg;
char _service[8] = "setprop";
ofw_arg.service = _service;
ofw_arg.n_args = 4;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = node;
ofw_arg.arg2 = name;
ofw_arg.arg3 = buf;
ofw_arg.arg4 = len;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int canon(char* device, uint8_t* buf, int buflen)
{
struct
{
char* service;
int n_args;
int n_rets;
char* arg1;
uint8_t* arg2;
int arg3;
int ret;
} ofw_arg;
char _service[6] = "canon";
ofw_arg.service = _service;
ofw_arg.n_args = 3;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = device;
ofw_arg.arg2 = buf;
ofw_arg.arg3 = buflen;
ofw(&ofw_arg);
return ofw_arg.ret;
}
phandle finddevice(char* device)
{
struct
{
char* service;
int n_args;
int n_rets;
char* arg1;
int ret;
} ofw_arg;
char _service[11] = "finddevice";
ofw_arg.service = _service;
ofw_arg.n_args = 1;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = device;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int instance_to_path(ihandle instance, uint8_t* buf, int buflen)
{
struct
{
char* service;
int n_args;
int n_rets;
ihandle arg1;
uint8_t* arg2;
int arg3;
int ret;
} ofw_arg;
char _service[17] = "instance-to-path";
ofw_arg.service = _service;
ofw_arg.n_args = 3;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = instance;
ofw_arg.arg2 = buf;
ofw_arg.arg3 = buflen;
ofw(&ofw_arg);
return ofw_arg.ret;
}
int package_to_path(phandle package, uint8_t* buf, int buflen)
{
struct
{
char* service;
int n_args;
int n_rets;
ihandle arg1;
uint8_t* arg2;
int arg3;
int ret;
} ofw_arg;
char _service[16] = "package-to-path";
ofw_arg.service = _service;
ofw_arg.n_args = 3;
ofw_arg.n_rets = 1;
ofw_arg.arg1 = package;
ofw_arg.arg2 = buf;
ofw_arg.arg3 = buflen;
ofw(&ofw_arg);
return ofw_arg.ret;
}
void* call_method(char* method, ihandle instance, ...)
{
}

4
entry/boot.h → include/ofw.h
View File

@ -1,5 +1,3 @@
void (*ofw)();
void __eabi();
#include <stdint.h>
typedef int phandle;
typedef int ihandle;