void ArchBoardSpecific::frameBufferInit()
{
// frame buffer initialization code from http://wiki.osdev.org/ARM_Integrator-CP_PL110_Dirty
typedef struct _PL110MMIO
{
uint32 volatile tim0; //0
uint32 volatile tim1; //4
uint32 volatile tim2; //8
uint32 volatile d; //c
uint32 volatile upbase; //10
uint32 volatile f; //14
uint32 volatile g; //18
uint32 volatile control; //1c
} PL110MMIO;
PL110MMIO *plio;
plio = (PL110MMIO*) 0x90000000;
/* 640x480 pixels */
plio->tim0 = 0x3f1f3f9c;
plio->tim1 = 0x080b61df;
plio->upbase = getVESAConsoleLFBPtr();
/* 16-bit color */
plio->control = 0x1929; // 1 1000 0010 1001
}
uint32 ArchBoardSpecific::getUsableMemoryRegion(uint32 region __attribute__((unused)), pointer &start_address, pointer &end_address, uint32 &type)
{
start_address = 0;
end_address = getVESAConsoleLFBPtr() & ~0xC0000000;
type = 1;
return 0;
}
void ArchBoardSpecific::frameBufferInit()
{
uint32 num_bytes = ArchCommon::getVESAConsoleWidth() * ArchCommon::getVESAConsoleHeight() * ArchCommon::getVESAConsoleBitsPerPixel() / 8;
frame_descriptor[3] = num_bytes << 2;
frame_descriptor[2] = 0; // ID not used
frame_descriptor[1] = (uint32)getVESAConsoleLFBPtr() - 0xC0000000 + 0xA0000000; // frame buffer address
frame_descriptor[0] = (uint32)(frame_descriptor) - 0x80000000 + 0xA0000000; // address of the next frame descriptor (always repeat the same)
uint32* DMA0 = (uint32*) 0x90000200;
DMA0[0] = frame_descriptor[0];
uint32* PRSR = (uint32*) 0x90000104;
*PRSR = (0x3 << 9); // status OK & continue to next command
uint32* LCCR = (uint32*) 0x90000000;
LCCR[1] = 639;
LCCR[2] = 479;
LCCR[3] = (0x4 << 24); // 16 bit color
LCCR[0] = 0x1; // enable lcd controller
}
