first pseudo flash filesystem code (not working yet)

[my-code/arm.git] / betty / flash.c

diff --git a/betty/flash.c b/betty/flash.c
index 8d9c02a..64488e2 100644 (file)
--- a/betty/flash.c
+++ b/betty/flash.c
@@ -10,7 +10,8 @@
 /*
  * sector addresses
  */
-static unsigned long sector_address[19]={
+
+unsigned long sector_address[19]={
        0x00000,0x02000,0x03000,0x04000,0x08000,
        0x10000,0x18000,
        0x20000,0x28000,
@@ -96,6 +97,24 @@ void flash_sector_erase(u8 bank,u8 sector) {
        return;
 }
 
+int flash_sec_erase(u32 addr) {
+
+       u32 a18_12;
+       u32 base;
+
+       a18_12=addr&0x00000fffff;
+       base=addr&0xff000000;
+       
+       *((volatile u16 *)(base|(0x555<<1)))=0xaa;
+       *((volatile u16 *)(base|(0x2aa<<1)))=0x55;
+       *((volatile u16 *)(base|(0x555<<1)))=0x80;
+       *((volatile u16 *)(base|(0x555<<1)))=0xaa;
+       *((volatile u16 *)(base|(0x2aa<<1)))=0x55;
+       *((volatile u16 *)(base|(a18_12<<1)))=0x30;
+
+       return 0;
+}
+
 void flash_chip_erase(u8 bank) {
 
        u8 status;