X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Fsystem.c;h=ef18b57926472842fb8ec180ccd64d305925798e;hp=d6aec13c76b071beda6f3d7ff71c0bb6fdd6ba8e;hb=916c8dd1dfa2414ae8b58ab1e3d477b24c553815;hpb=5da509dc909c60d63c5fba98e7ced43040eb6827

diff --git a/betty/system.c b/betty/system.c
index d6aec13..ef18b57 100644
--- a/betty/system.c
+++ b/betty/system.c
@@ -11,11 +11,6 @@
  * functions
  */
 
-void mmap_init(u8 memtype) {
-
-	MEMMAP=memtype;
-}
-
 void pll_init(void) {
 
 	/* configuration */
@@ -31,6 +26,102 @@ void pll_init(void) {
 		continue;
 }
 
+void ext_mem_init(void) {
+
+	/*
+	 * flash at bank0 and bank:
+	 *
+	 * idle clocks between rad & write: 0+1
+	 * length of read access: 1+3
+	 * bls lines high during write access
+	 * length of write access: 0+extra
+	 * no write protect, no burst-rom
+	 * 16 bit data width
+	 *
+	 */
+
+	BCFG0=0x10000420;	// bank 0
+	BCFG2=0x10000420;	// bank 2
+
+	/*
+	 * lcd at bank 1:
+	 *
+	 * idle clocks between rad & write: 2+1
+	 * length of read access: 2+3
+	 * bls lines low during write access
+	 * length of write access: 1+extra
+	 * no write protect, no burst-rom
+	 * 8 bit data width
+	 *
+	 */
+
+	BCFG1=0x00000c42;	// bank 1
+}
+
+void pin_init(void) {
+
+	/*
+	 * pinsel 0
+	 *
+	 * uart0: tx, rx
+	 *
+	 */
+
+	PINSEL0=0x00000005;
+
+	/*
+	 * pinsel 1
+	 *
+	 * p0.30: eint3
+	 *
+	 */
+
+	PINSEL1=0x20000000;
+
+	/*
+	 * pin select 2
+	 *
+	 * orig fw ->    d    6    0    4    1    d    4
+	 *            1101 0110 0000 0100 0001 1101 0100
+	 *
+	 * this fw ->    d    e    0    4    9    d    4
+	 *            1101 1110 0000 0100 1001 1101 0100
+	 *
+	 * differences:
+	 *
+	 *   - p3.26 should be chip select for ext mem bank 1
+	 *   - p3.0 should be address line 0
+	 *
+	 * explanation: maybe bcfg1 config implies these settings
+	 *
+	 */
+
+	//PINSEL2=0xd6041d4;
+	PINSEL2=0xde049d4;
+
+	/*
+	 * gpio config
+	 *
+	 * buttons:
+	 *
+	 * out: p2.18 - p2.24 (+ pull high)
+	 * in: p0.30, p0.{27,28}, p3.{20,21}, p0.22, p0.13
+	 *
+	 */
+
+	// nothing to do for inputs (default: 0x00000000)
+	IODIR2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
+	IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
+}
+
+void mmap_init(u8 memtype) {
+
+	if(memtype==MEMTYPE_RESERVED)
+		return;
+
+	MEMMAP=memtype;
+}
+
 void pause(u32 cnt) {
 
 	while(cnt--)