Macintosh-SW
/
powerpc-ofw-boot
mirror of https://github.com/thamugadi/powerpc-ofw-boot.git
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This commit is contained in:
thamugadi 2021-10-11 10:12:07 +01:00
parent 67d2267274
commit b40ea6c721
2 changed files with 14 additions and 7 deletions
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2
Makefile
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@ -1,4 +1,4 @@
MACHINE=mac99
MACHINE=mac99,via=pmu
PPC=powerpc-linux-gnu
QEMU=qemu-system-ppc
RES=1280x768x32

19
entry/boot.c
View File

@ -7,7 +7,7 @@
#define __VRAM__MAC99 0x81000000
#define __BIOS__MAC99 0XFFF00000
#define __MOUSE__MAC99 0x8008003C
#define __KEYBOARD__MAC99 0x80080038
unsigned char IO_TYPE;
unsigned char* p_vram;
unsigned char* p_bios;
@ -30,6 +30,7 @@ void init(void)
p_vram = __VRAM__MAC99;
p_bios = __BIOS__MAC99;
p_mouse=__MOUSE__MAC99;
p_keyboard=__KEYBOARD__MAC99;
}
}
@ -37,11 +38,7 @@ void main(void)
{
get_io_type();
init();
//fillscreen(85,100,85, 0x100000);
for(;;)
{
memcpy_24bit(0x81000000, p_mouse, 0x1, 0x100000);
}
for(;;) memcpy_24bit(0x81000000, p_mouse, 1, 0x100000);
}
@ -92,3 +89,13 @@ void memcpy_24bit(unsigned char* dest, unsigned char* src, int n, int size)
source++;
}
}
unsigned char u8_extract_bit(unsigned char n, unsigned char bit)
{
return (n & (0b10000000 >> bit)) >> (7 - bit);
}
unsigned char u32_extract_bit(unsigned int n, unsigned char bit)
{
return (n & (0x80000000 >> bit)) >> (31 - bit);
}