aclindsa/aedrix-kernel
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Add pl111 support

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This commit is contained in:
Aaron Lindsay 2012-09-10 22:44:54 -04:00
parent aaa714d89a
commit 955d15803f
4 changed files with 61 additions and 3 deletions
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3
devices/Makefile.inc
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@ -1,4 +1,5 @@
DEVICES_PREFIX = devices DEVICES_PREFIX = devices
KOBJS += $(DEVICES_PREFIX)/pl110.o
KOBJS += $(DEVICES_PREFIX)/pl011.o KOBJS += $(DEVICES_PREFIX)/pl011.o
KOBJS += $(DEVICES_PREFIX)/pl110.o
KOBJS += $(DEVICES_PREFIX)/pl111.o

54
devices/pl111.c Normal file
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@ -0,0 +1,54 @@
#include <framebuffer.h>
typedef unsigned int uint32;
#define PL111_CR_EN 0x001
#define PL111_CR_PWR 0x800
#define PL111_IOBASE 0x10020000
#define PL111_PALBASE (PL111_IOBASE + 0x200)
#define PL111_FB_BASE 0x200000;
struct pl111_control {
uint32 volatile timing0; //0
uint32 volatile timing1; //4
uint32 volatile timing2; //8
uint32 volatile timing3; //c
uint32 volatile upbase; //10
uint32 volatile lpbase; //14
uint32 volatile control; //18
};
struct fbdev pl111_fb_device;
int pl111_init(struct fb *f, unsigned int color_depth) {
struct pl111_control *plio = (struct pl111_control*)PL111_IOBASE;
/* 640x480 pixels */
plio->timing0 = 0x3f1f3f9c;
plio->timing1 = 0x080b61df;
plio->upbase = PL111_FB_BASE;
if (color_depth == FB_COLOR_DEPTH_8) {
plio->control = 0x1827;
} else if (color_depth == FB_COLOR_DEPTH_16) {
plio->control = 0x1829;
} else if (color_depth == FB_COLOR_DEPTH_24) {
plio->control = 0x182B;
} else {
//assume 16 if nothing else fit
color_depth = 16;
plio->control = 0x1829;
}
f->device = &pl111_fb_device;
f->device->fbaddr = (void*)PL111_FB_BASE;
f->width = 640;
f->device->pixelwidth = 640;
f->height = 480;
f->device->pixelheight = 480;
f->color_depth = color_depth;
f->device->color_depth = color_depth;
return 0;
}

3
include/devices/pl111.h Normal file
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@ -0,0 +1,3 @@
#include <framebuffer.h>
int pl111_init(struct fb *f, unsigned int color_depth);

4
kernel/start_kernel.c
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@ -1,7 +1,7 @@
#include <print.h> #include <print.h>
#include <devices/pl011.h> #include <devices/pl011.h>
#include <devices/pl110.h> #include <devices/pl111.h>
#include <framebuffer.h> #include <framebuffer.h>
#include <console.h> #include <console.h>
@ -9,7 +9,7 @@ struct fb myfb;
void video(void) { void video(void) {
// unsigned int x, y; // unsigned int x, y;
pl110_init(&myfb, 24); pl111_init(&myfb, 24);
// x = 0, y = 0; // x = 0, y = 0;
// for (y=0; y<480; y++) // for (y=0; y<480; y++)
// for (x=0; x<640; x++) // for (x=0; x<640; x++)