mirror of
https://github.com/ApfelTeeSaft/reactos.git
synced 2026-09-02 19:26:32 +00:00
A 'boot logo' of sorts to show we're about to switch to kernel mode.
We'll pass the FB address into kernel land so we can continue writing on it. svn path=/branches/powerpc/; revision=24357
This commit is contained in:
Art Yerkes
@@ -201,11 +201,31 @@ static int prom_next_node(int *nodep)
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}
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}
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/* Appropriated from linux' btext.c
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* author:
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* Benjamin Herrenschmidt <[email protected]>
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*/
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VOID PpcVideoPrepareForReactOS() {
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int i, j, display_handle, display_size = 0;
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int i, j, k, /* display_handle, */ display_package, display_size = 0;
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int node, ret, elts;
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pci_reg_property display_regs[8];
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int device_address;
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//pci_reg_property display_regs[8];
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char type[256], path[256], name[256];
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char logo[] = {
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" "
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" XXXXXX "
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" X X "
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" X X X X "
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" X X "
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" X XXXX X "
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" X XX X "
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" X X "
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" XXXXXX "
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" "
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};
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int logo_x = 10, logo_y = 10;
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int logo_scale_x = 8, logo_scale_y = 8;
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for( node = ofw_finddevice("/"); prom_next_node(&node); ) {
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memset(type, 0, sizeof(type));
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@@ -231,62 +251,56 @@ VOID PpcVideoPrepareForReactOS() {
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}
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printf("Opening display package: %s\n", path);
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display_handle = ofw_open(path);
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printf("display handle %x\n", display_handle);
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display_package = ofw_finddevice(path);
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printf("display package %x\n", display_package);
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BootInfo.dispDeviceRect[0] = BootInfo.dispDeviceRect[1] = 0;
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ofw_getprop(display_handle, "width",
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ofw_getprop(display_package, "width",
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(void *)&BootInfo.dispDeviceRect[2], sizeof(int));
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ofw_getprop(display_handle, "height",
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ofw_getprop(display_package, "height",
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(void *)&BootInfo.dispDeviceRect[3], sizeof(int));
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ofw_getprop(display_handle, "depth",
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ofw_getprop(display_package, "depth",
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(void *)&BootInfo.dispDeviceDepth, sizeof(int));
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ofw_getprop(display_handle, "linebytes",
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ofw_getprop(display_package, "linebytes",
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(void *)&BootInfo.dispDeviceRowBytes, sizeof(int));
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if(ofw_getprop
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(display_handle,
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"address",
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(void *)&BootInfo.dispDeviceBase,
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sizeof(BootInfo.dispDeviceBase)) > 0) {
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goto finish;
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}
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BootInfo.dispDeviceRect[2] = REV(BootInfo.dispDeviceRect[2]);
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BootInfo.dispDeviceRect[3] = REV(BootInfo.dispDeviceRect[3]);
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BootInfo.dispDeviceDepth = REV(BootInfo.dispDeviceDepth);
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BootInfo.dispDeviceRowBytes = REV(BootInfo.dispDeviceRowBytes);
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if((elts = ofw_getprop(display_handle,
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"assigned-addresses",
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(void *)display_regs,
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sizeof(display_regs))) <= 0) {
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printf("Could not get assigned addresses\n");
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if(ofw_getprop
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(display_package,
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"address",
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(void *)&device_address,
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sizeof(device_address)) < 1) {
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printf("Could not get device base\n");
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return;
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}
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elts /= sizeof(display_regs[0]);
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for( i = 0; i < elts; i++ ) {
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display_size = display_regs[i].size_lo;
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if( display_size >= (1 << 20) ) {
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BootInfo.dispDeviceBase = (void *)display_regs[i].addr.a_lo;
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/* Map pages for display at some location */
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BootInfo.logicalDisplayBase = (void *)0xc0000000;
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for( i = 0; i < display_size; i += (1 << 12) ) {
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InsertPageEntry((ULONG_PTR)((PCHAR)BootInfo.logicalDisplayBase)+i,
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(ULONG_PTR)((PCHAR)BootInfo.dispDeviceBase)+i);
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}
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}
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}
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BootInfo.dispDeviceBase = (PVOID)(REV(device_address));
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finish:
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/* Draw something ... */
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elts = 0;
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for( i = 0; i < BootInfo.dispDeviceRect[3]; i++ ) {
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for( j = 0; j < BootInfo.dispDeviceRect[2]; j++ ) {
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((PCHAR)BootInfo.logicalDisplayBase)
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[(j * (BootInfo.dispDeviceDepth/8)) +
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(i * (BootInfo.dispDeviceRowBytes))] = elts++;
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display_size = BootInfo.dispDeviceRowBytes * BootInfo.dispDeviceRect[3];
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printf("Display size is %x bytes (%x per row times %x rows)\n",
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display_size,
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BootInfo.dispDeviceRowBytes,
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BootInfo.dispDeviceRect[3]);
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printf("display is at %x\n", BootInfo.dispDeviceBase);
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for( i = 0; i < logo_y * logo_scale_y; i++ ) {
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for( j = 0; j < logo_x * logo_scale_x; j++ ) {
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elts = (j/logo_scale_x) + ((i/logo_scale_y) * logo_x);
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for( k = 0; k < BootInfo.dispDeviceDepth/8; k++ ) {
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SetPhysByte(((ULONG_PTR)BootInfo.dispDeviceBase)+
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k +
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((j * (BootInfo.dispDeviceDepth/8)) +
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(i * (BootInfo.dispDeviceRowBytes))),
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logo[elts] == ' ' ? 0 : 255);
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}
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}
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}
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}
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@@ -7,6 +7,12 @@ inline int GetMSR() {
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return res;
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}
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inline int GetDEC() {
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register int res asm ("r3");
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__asm__("mfdec 3");
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return res;
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}
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__asm__("\t.globl GetPhys\n"
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"GetPhys:\t\n"
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"mflr 0\n\t"
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@@ -15,8 +21,12 @@ __asm__("\t.globl GetPhys\n"
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"xori 3,3,4\n\t" /* Undo effects of LE without swapping */
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"andi. 6,5,0xffef\n\t"/* turn off MSR[DR] */
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"mtmsr 6\n\t"
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"isync\n\t"
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"sync\n\t"
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"lwz 3,0(3)\n\t" /* Get actual value at phys addr r3 */
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"mtmsr 5\n\t"
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"isync\n\t"
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"sync\n\t"
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"lwz 0,0(1)\n\t"
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"addi 1,1,16\n\t"
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"mtlr 0\n\t"
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@@ -31,8 +41,35 @@ __asm__("\t.globl SetPhys\n"
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"xori 3,3,4\n\t" /* Undo effects of LE without swapping */
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"andi. 6,5,0xffef\n\t"/* turn off MSR[DR] */
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"mtmsr 6\n\t"
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"stw 4,0(3)\n\t" /* Get actual value at phys addr r3 */
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"sync\n\t"
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"eieio\n\t"
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"stw 4,0(3)\n\t" /* Set actual value at phys addr r3 */
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"dcbst 0,3\n\t"
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"mtmsr 5\n\t"
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"sync\n\t"
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"eieio\n\t"
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"mr 3,4\n\t"
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"lwz 0,0(1)\n\t"
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"addi 1,1,16\n\t"
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"mtlr 0\n\t"
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"blr"
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);
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__asm__("\t.globl SetPhysByte\n"
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"SetPhysByte:\t\n"
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"mflr 0\n\t"
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"stwu 0,-16(1)\n\t"
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"mfmsr 5\n\t"
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"xori 3,3,7\n\t" /* Undo effects of LE without swapping */
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"andi. 6,5,0xffef\n\t"/* turn off MSR[DR] */
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"mtmsr 6\n\t"
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"sync\n\t"
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"eieio\n\t"
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"stb 4,0(3)\n\t" /* Set actual value at phys addr r3 */
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"dcbst 0,3\n\t"
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"mtmsr 5\n\t"
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"sync\n\t"
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"eieio\n\t"
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"mr 3,4\n\t"
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"lwz 0,0(1)\n\t"
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"addi 1,1,16\n\t"
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@@ -183,6 +220,7 @@ inline void SetBat( int bat, int inst, int batHi, int batLo ) {
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break;
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}
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}
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__asm__("isync\n\tsync");
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}
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inline int GetSDR1() {
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@@ -1,9 +1,11 @@
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#ifndef FREELDR_MMU_H
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#define FREELDR_MMU_H
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int GetDEC();
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int GetMSR();
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int GetPhys( int addr );
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void SetPhys( int addr, int val );
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void SetPhysByte( int addr, int val );
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int GetSR(int n);
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void GetBat( int bat, int inst, int *batHi, int *batLo );
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void SetBat( int bat, int inst, int batHi, int batLo );
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@@ -0,0 +1,11 @@
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#ifndef REACTOS_PPCBOOT_H
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#define REACTOS_PPCBOOT_H
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typedef struct _boot_infos_t {
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int dispDeviceRect[4];
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int dispDeviceRowBytes;
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int dispDeviceDepth;
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void *dispDeviceBase;
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} boot_infos_t;
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#endif/*REACTOS_PPCBOOT_H*/
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