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fusee: add basic print-to-display console / printk

This commit is contained in:
Kate J. Temkin 2018-03-27 05:28:28 -06:00
parent 9ab7d66524
commit 57853602df
11 changed files with 14144 additions and 3 deletions

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@ -0,0 +1,53 @@
/*
* (C) Copyright 1997-2002 ELTEC Elektronik AG
* Frank Gottschling <fgottschling@eltec.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _VIDEO_FB_H_
#define _VIDEO_FB_H_
#define CONSOLE_BG_COL 0x00
#define CONSOLE_FG_COL 0xa0
/* Try using the small font */
#define CONFIG_VIDEO_FONT_SMALL
/*
* Graphic Data Format (GDF) bits for VIDEO_DATA_FORMAT
*/
#define GDF__8BIT_INDEX 0
#define GDF_15BIT_555RGB 1
#define GDF_16BIT_565RGB 2
#define GDF_32BIT_X888RGB 3
#define GDF_24BIT_888RGB 4
#define GDF__8BIT_332RGB 5
#define CONFIG_VIDEO_FB_LITTLE_ENDIAN
#define CONFIG_VIDEO_VISIBLE_COLS 720
#define CONFIG_VIDEO_VISIBLE_ROWS 1280
#define CONFIG_VIDEO_COLS 768
#define CONFIG_VIDEO_PIXEL_SIZE 4
#define CONFIG_VIDEO_DATA_FORMAT GDF_32BIT_X888RGB /* BGR actually, but w/e */
int video_init(void *fb);
void video_puts(const char *s);
#endif /*_VIDEO_FB_H_ */

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@ -183,7 +183,7 @@ void display_color_screen(u32 color)
GPIO_6(0x24) = GPIO_6(0x24) & 0xFFFFFFFE | 1;
}
u32 *display_init_framebuffer(u32 *fb)
u32 *display_init_framebuffer(void)
{
//This configures the framebuffer @ 0xC0000000 with a resolution of 1280x720 (line stride 768).
exec_cfg((u32 *)DISPLAY_A_BASE, cfg_display_framebuffer, 32);

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@ -51,6 +51,6 @@ void display_end();
void display_color_screen(u32 color);
/*! Init display in full 1280x720 resolution (32bpp, line stride 768, framebuffer size = 1280*768*4 bytes). */
u32 *display_init_framebuffer();
u32 *display_init_framebuffer(void);
#endif

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fusee/src/lib/printk.c Normal file
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/**
* Kernel print functions.
*/
#include "printk.h"
#include "vsprintf.h"
#include "../display/video_fb.h"
/**
* Temporary stand-in main printk.
*
* TODO: This should print via UART, console framebuffer, and to a ring for
* consumption by Horizon
*/
void printk(char *fmt, ...)
{
va_list list;
char buf[512];
va_start(list, fmt);
vsnprintf(buf, sizeof(buf), fmt, list);
video_puts(buf);
va_end(list);
}

2
fusee/src/lib/printk.h Normal file
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@ -0,0 +1,2 @@
void printk(char *fmt, ...);

1676
fusee/src/lib/vsprintf.c Normal file

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24
fusee/src/lib/vsprintf.h Normal file
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/*
* Copyright (C) 2011 Andrei Warkentin <andrey.warkentin@gmail.com>
*
* This program is free software ; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <stdarg.h>
#include <stdlib.h>
#ifndef VSPRINTF_H
#define VSPRINTF_H
struct va_format {
const char *fmt;
va_list *va;
};
unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base);
int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
#endif /* VSPRINTF_H */

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@ -1,10 +1,22 @@
#include "utils.h"
#include "hwinit.h"
#include "lib/printk.h"
#include "display/video_fb.h"
int main(void) {
u32 *lfb_base;
nx_hwinit();
display_init();
display_color_screen(0xFFFFFFFF);
// Set up the display, and register it as a printk provider.
lfb_base = display_init_framebuffer();
video_init(lfb_base);
// Say hello.
printk("Welcome to Atmosphere Fusee!\n");
printk("Using color linear framebuffer at 0x%p!\n", lfb_base);
/* Do nothing for now */
return 0;