From a2f065772bcb7766859033d140980720ef824546 Mon Sep 17 00:00:00 2001
From: John Tsiombikas <nuclear@member.fsf.org>
Date: Tue, 3 Sep 2019 22:55:23 +0300
Subject: [PATCH] foo

---
 src/census/3dgfx.h  |    2 +-
 src/census/census.c |    2 +-
 src/config.h        |    5 +++++
 src/kmain.c         |    6 ++++--
 src/libc/unistd.c   |   12 ++++++++++++
 src/libc/unistd.h   |    2 ++
 6 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/src/census/3dgfx.h b/src/census/3dgfx.h
index 89b28d8..0ae58c9 100644
--- a/src/census/3dgfx.h
+++ b/src/census/3dgfx.h
@@ -26,7 +26,7 @@ enum {
 	G3D_LIGHT1		= 0x000010,
 	G3D_LIGHT2		= 0x000020,
 	G3D_LIGHT3		= 0x000040,
-	G3D_TEXTURE_2D	= 0x000080,	/* XXX doesn't affect anything, use g3d_polygon_mode */
+	G3D_TEXTURE_2D	= 0x000080,
 	G3D_BLEND		= 0x000100,
 	G3D_TEXTURE_GEN	= 0x000200,
 	G3D_CLIP_FRUSTUM = 0x000800,/* when disabled, don't clip against the frustum */
diff --git a/src/census/census.c b/src/census/census.c
index 724ab2a..7eea8d3 100644
--- a/src/census/census.c
+++ b/src/census/census.c
@@ -45,7 +45,7 @@ void draw_census(void)
 	float a[2], b[2], dt;
 	float anim, alpha, center_alpha;
 
-	memset(fb_pixels, 0, fb_width * fb_height * 4);
+	memset(fb_pixels, 0x11, fb_width * fb_height * 4);
 
 	anim = fmod(t / 6.0f, LOOPTIME);
 	alpha = 1.0f - ((anim - (LOOPTIME - 0.075)) / 0.06f);
diff --git a/src/config.h b/src/config.h
index 58a6147..f444b95 100644
--- a/src/config.h
+++ b/src/config.h
@@ -24,4 +24,9 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #define CON_TEXTMODE
 #define CON_SERIAL
 
+#define MOVE_STACK_RAMTOP
+/* allocate 64k for stack */
+#define STACK_PAGES		16
+
+
 #endif	/* PCBOOT_CONFIG_H_ */
diff --git a/src/kmain.c b/src/kmain.c
index 99104a2..bcd8a91 100644
--- a/src/kmain.c
+++ b/src/kmain.c
@@ -18,6 +18,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include <stdio.h>
 #include <string.h>
 #include <ctype.h>
+#include <unistd.h>
 #include "segm.h"
 #include "intr.h"
 #include "mem.h"
@@ -119,10 +120,11 @@ static int video_init(void)
 		qsort(vmodes, nmodes, sizeof *vmodes, modecmp);
 
 		for(i=0; i<nmodes; i++) {
+			printf("trying video mode: %x (%dx%d %dbpp)\n", vmodes[i].mode, vmodes[i].width,
+					vmodes[i].height, vmodes[i].bpp);
+			usleep(5000000);
 			if((fbptr = set_video_mode(vmodes[i].mode))) {
 				vmode = vmodes[i];
-				printf("video mode: %x (%dx%d %dbpp)\n", vmode.mode, vmode.width,
-						vmode.height, vmode.bpp);
 				break;
 			}
 		}
diff --git a/src/libc/unistd.c b/src/libc/unistd.c
index 1fc0542..7da132f 100644
--- a/src/libc/unistd.c
+++ b/src/libc/unistd.c
@@ -19,6 +19,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include <errno.h>
 #include "unistd.h"
 #include "fs.h"
+#include "timer.h"
+#include "asmops.h"
 
 int chdir(const char *path)
 {
@@ -59,3 +61,13 @@ int rmdir(const char *path)
 	fs_close(fsn);
 	return 0;
 }
+
+int usleep(unsigned long usec)
+{
+	unsigned long wait_ticks = MSEC_TO_TICKS(usec / 1000ul);
+	unsigned long start_ticks = nticks;
+	while(nticks - start_ticks < wait_ticks) {
+		halt_cpu();
+	}
+	return 0;
+}
diff --git a/src/libc/unistd.h b/src/libc/unistd.h
index 1ed4cf2..63651c3 100644
--- a/src/libc/unistd.h
+++ b/src/libc/unistd.h
@@ -24,4 +24,6 @@ char *getcwd(char *buf, int sz);
 int mkdir(const char *path, int mode);
 int rmdir(const char *path);
 
+int usleep(unsigned long usec);
+
 #endif	/* UNISTD_H_ */
-- 
1.7.10.4