rdramg.c
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/*
* rdramgclr - clear the framebuffer to set value
*
* defaults to clearing the cfb to (0, 200, 200, 1) (Rob's favorite color)
* and the z buffer to max value
*
* arguments:
* -c color - color to clear to
* -z zvalue - z value to clear to
* -f framebuf_addr - override cfb address from .rdram file (verifinfo struct)
* -d zbuf_addr - override bif address from .rdram file (verifinfo struct)
*
*
* XXX - only knows about 16 bit color buffer now, get format from .rdram file
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <mbi.h>
#include <verify.h>
#include "rdram.h"
#define HEIGHT 240
#define WIDTH 320
#define DEFAULT_CFB_ADDR 0x000b0000
#define DEFAULT_CFB_VALUE 0x00c8c807 /* (0,200,200,1) */
#define DEFAULT_ZB_ADDR 0x00100000
#define DEFAULT_ZB_VALUE 0x3ffff0
static unsigned char *mainaddr, *hiddenaddr;
static long mainsize, hiddensize;
static int height = HEIGHT;
static int width = WIDTH;
static unsigned char hiddenmask[] = {
~0xc0,
~0x30,
~0x0c,
~0x03
};
static int hiddenshift[] = {
6,
4,
2,
0
};
char *UsageStr = "Usage: rdramgclr <-c color> <-z zvalue> <-f framebuf_addr> <-d depthbuf_addr> file\n";
extern unsigned int quiet_mode;
/*
* writecolor
* r, g, b, a - all 8 bits
* (a is really cvg and only 3 bits)
* format - G_IM_FMT_RGBA, G_IM_FMT_CI, G_IM_FMT_IA
* size - G_IM_SIZ_32b, G_IM_SIZ_16b, G_IM_SIZ_8b
* base - base address of color buffer (a byte address)
* offset - pixel offset into color buffer (ie units is # of pixels)
*
* XXX assert that base is on x word boundary
*/
static void
writecolor(unsigned char r, unsigned char g, unsigned char b, unsigned char a,
unsigned char format, unsigned char size,
unsigned long base, unsigned long offset)
{
unsigned char *addr;
unsigned char hidden;
switch (format) {
case G_IM_FMT_RGBA:
switch (size) {
case G_IM_SIZ_32b:
addr = mainaddr + base + (offset*4);
*addr++ = r;
*addr++ = g;
*addr++ = b;
*addr = a << 5;
break;
case G_IM_SIZ_16b:
addr = mainaddr + base + (offset*2);
*addr++ = (r & 0xf8) | (g >> 5);
*addr = ( (g & 0x18) << 3) | ((b & 0xf8) >> 2) | ((a & 0x4) >> 2);
/* now for the hidden part */
addr = hiddenaddr + (base / HIDDEN_FACTOR) + (offset / 4);
hidden = *addr;
hidden &= hiddenmask[offset % 4];
hidden |= ((a & 0x3) << hiddenshift[offset % 4]);
*addr = hidden;
break;
default:
fprintf(stderr, "memspan write: RGB size of %d not supported\n", format);
break;
}
break;
default:
fprintf(stderr, "memspan write: format not supported (%d)\n", format);
break;
}
}
/*
* writez
* z - 18 bits of info
* base - base address of z buffer (a byte address)
* offset - pixel offset into z buffer (ie units is # of pixels)
*
* XXX check order & endian of hidden bits
*/
static void
writez(unsigned long z, unsigned long base, unsigned long offset)
{
unsigned char *addr;
unsigned char c;
addr = mainaddr + base + (offset*2);
*addr++ = (z >> 10) & 0xff;
*addr++ = (z >> 2) & 0xff;
/* now for hidden part */
addr = hiddenaddr + (base / HIDDEN_FACTOR) + (offset / 4);
c = *addr;
c &= hiddenmask[offset % 4];
c |= ((z & 0x3) << hiddenshift[offset % 4]);
*addr = c;
}
main(int argc, char *argv[])
{
int i, j, c;
unsigned char r, g, b, a;
unsigned long color;
unsigned long z;
unsigned long cfbaddr, zaddr;
int usezaddr, usecfbaddr;
VerifyInfo *vp;
extern char *optarg;
extern int optind;
int rdram_size = 0;
color = DEFAULT_CFB_VALUE;
z = DEFAULT_ZB_VALUE;
usezaddr = usecfbaddr = FALSE;
while ((c = getopt(argc, argv, "c:z:f:d:m:qh")) != EOF) {
switch (c) {
case 'c':
color = strtol(optarg, NULL, 0);
break;
case 'z':
z = strtol(optarg, NULL, 0);
break;
case 'f':
cfbaddr = strtol(optarg, NULL, 0);
usecfbaddr = TRUE;
break;
case 'd':
zaddr = strtol(optarg, NULL, 0);
usezaddr = TRUE;
break;
case 'q':
quiet_mode = 1;
break;
case 'h':
printf(UsageStr);
exit(0);
break;
case 'm':
rdram_size = strtoul(optarg, NULL, 0);
if (rdram_size > 4)
rdram_size = 0;
break;
default:
break;
}
}
if (optind == argc) {
printf(UsageStr);
exit(1);
}
if (rdram_size != 0) {
/* Let's expand your rdram to your specified number */
struct stat statbuf;
int fd;
char filename[1024];
sprintf(filename, "%s.rdram", argv[optind]);
if (stat(filename, &statbuf) == -1) {
fprintf(stderr, "Could not stat <%s>\n", filename);
return 0;
}
if (statbuf.st_size < (TOTAL_MEMORY_SIZE*rdram_size)) {
if ((fd = open(filename, (O_RDWR | O_CREAT), 0644)) == -1) {
fprintf(stderr, "Could not open <%s>\n", filename);
return 0;
}
filename[0]='\0';
lseek(fd, TOTAL_MEMORY_SIZE*rdram_size-1, SEEK_SET);
write(fd, filename, 1);
close(fd);
}
}
if (!rdraminit(argv[optind], RDRAM_RW, RDRAM_NEEDHIDDEN, rdram_size,
&mainaddr, &mainsize, &hiddenaddr, &hiddensize))
exit(1);
vp = (VerifyInfo *)(mainaddr + VERIFY_INFO_PHYSADDR);
if (!usecfbaddr)
cfbaddr = ntohl(vp->frameBuffer0Addr);
else
vp->frameBuffer0Addr = htonl(cfbaddr);
if (!usezaddr)
zaddr = ntohl(vp->zBufferAddr);
else
vp->zBufferAddr = htonl(zaddr);
/* for old files */
if (ntohl(vp->frameBufferFormat) == 0 && ntohl(vp->frameBufferSize == 0)) {
vp->frameBufferFormat = htonl(G_IM_FMT_RGBA);
vp->frameBufferSize = htonl(G_IM_SIZ_16b);
}
width = ntohs(vp->width);
height = ntohs(vp->height);
/*
*/
if (!quiet_mode)
{
fprintf(stderr, "cfbaddr 0x%x, zaddr 0x%x\n", cfbaddr, zaddr);
fprintf(stderr, "clear color 0x%x, clear z 0x%x\n", color, z);
fprintf(stderr, "format %d, size %d\n", vp->frameBufferFormat, vp->frameBufferSize);
fprintf(stderr, "width %d, height %d\n", width, height);
}
r = (color >> 24) & 0xff;
g = (color >> 16) & 0xff;
b = (color >> 8) & 0xff;
a = (color) & 0xff;
#if 0
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
writecolor(r, g, b, a, ntohl(vp->frameBufferFormat),
ntohl(vp->frameBufferSize),
cfbaddr, (i * width) + j);
writez(z, zaddr, (i * width) + j);
}
}
#endif
}