initial commit

2026-07-18 20:34:55 +02:00
commit 59ad004c96
474 changed files with 226635 additions and 0 deletions
@@ -0,0 +1,97 @@
+#include "reu.h"
+
+int reu_count_pages(void)
+{
+	volatile char	c, d;
+
+	c = 0;
+	reu_store(0, &c, 1);
+	reu_load(0, &d, 1);
+
+	if (d == 0)
+	{
+		c = 0x47;
+		reu_store(0, &c, 1);
+		reu_load(0, &d, 1);
+
+		if (d == 0x47)
+		{
+			for(int i=1; i<256; i++)
+			{
+				long l = (long)i << 16;
+				c = 0x47;
+				reu_store(l, &c, 1);
+				c = 0x00;
+				reu_store(0, &c, 1);
+
+				reu_load(l, &d, 1);
+				if (d != 0x47)
+					return i;
+			}
+
+			return 256;
+		}
+	}
+
+	return 0;
+}
+
+inline void reu_store(unsigned long raddr, const volatile char * sp, unsigned length)
+{
+	reu.laddr = (word)sp;
+	reu.raddr = raddr;
+	reu.rbank = raddr >> 16;
+	reu.length = length;
+	reu.ctrl = REU_CTRL_INCL | REU_CTRL_INCR;
+	reu.cmd = REU_CMD_EXEC | REU_CMD_FF00 | REU_CMD_STORE;
+
+}
+
+inline void reu_load(unsigned long raddr, volatile char * dp, unsigned length)
+{
+	reu.laddr = (word)dp;
+	reu.raddr = raddr;
+	reu.rbank = raddr >> 16;
+	reu.length = length;
+	reu.ctrl = REU_CTRL_INCL | REU_CTRL_INCR;
+	reu.cmd = REU_CMD_EXEC | REU_CMD_FF00 | REU_CMD_LOAD;
+}
+
+inline void reu_fill(unsigned long raddr, char c, unsigned length)
+{
+	reu.laddr = (word)&c;
+	reu.raddr = raddr;
+	reu.rbank = raddr >> 16;
+	reu.length = length;
+	reu.ctrl = REU_CTRL_FIXL | REU_CTRL_INCR;
+	reu.cmd = REU_CMD_EXEC | REU_CMD_FF00 | REU_CMD_STORE;
+}
+
+inline void reu_load2d(unsigned long raddr, volatile char * dp, char height, unsigned width, unsigned stride)
+{
+	reu.ctrl = REU_CTRL_INCL | REU_CTRL_INCR;
+	reu.laddr = (word)dp;
+	for(char i=0; i<height; i++)
+	{
+		reu.length = width;
+		reu.raddr = raddr;
+		reu.rbank = raddr >> 16;
+		reu.cmd = REU_CMD_EXEC | REU_CMD_FF00 | REU_CMD_LOAD;
+		raddr += stride;
+	}	
+}
+
+inline void reu_load2dpage(unsigned long raddr, volatile char * dp, char height, unsigned width, unsigned stride)
+{
+	reu.ctrl = REU_CTRL_INCL | REU_CTRL_INCR;
+	reu.laddr = (word)dp;
+	reu.rbank = raddr >> 16;
+	for(char i=0; i<height; i++)
+	{
+		reu.length = width;
+		reu.raddr = raddr;
+		reu.cmd = REU_CMD_EXEC | REU_CMD_FF00 | REU_CMD_LOAD;
+		raddr += stride;
+	}	
+}
+