Fix flash driver for TRAB board (must use Unlock Bypass Reset command
to exit Unlock Bypass Mode); adjust timings for flash, SRAM and CPLD
diff --git a/board/trab/flash.c b/board/trab/flash.c
index aba0631..764c57b 100644
--- a/board/trab/flash.c
+++ b/board/trab/flash.c
@@ -39,7 +39,10 @@
#define CMD_PROGRAM 0x00A000A0
#define CMD_UNLOCK_BYPASS 0x00200020
#define CMD_READ_MANF_ID 0x00900090
+#define CMD_UNLOCK_BYPASS_RES1 0x00900090
+#define CMD_UNLOCK_BYPASS_RES2 0x00000000
+#define MEM_FLASH_ADDR (*(volatile u32 *)CFG_FLASH_BASE)
#define MEM_FLASH_ADDR1 (*(volatile u32 *)(CFG_FLASH_BASE + (0x00000555 << 2)))
#define MEM_FLASH_ADDR2 (*(volatile u32 *)(CFG_FLASH_BASE + (0x000002AA << 2)))
@@ -331,9 +334,6 @@
#endif
iflag = disable_interrupts ();
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
*addr = CMD_PROGRAM;
*addr = data;
@@ -402,6 +402,10 @@
int l;
int i, rc;
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
+
wp = (addr & ~3); /* get lower word aligned address */
/*
@@ -422,7 +426,7 @@
}
if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
+ goto Done;
}
wp += 4;
}
@@ -441,7 +445,7 @@
}
if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
+ goto Done;
}
src += 4;
wp += 4;
@@ -449,7 +453,8 @@
}
if (cnt == 0) {
- return ERR_OK;
+ rc = ERR_OK;
+ goto Done;
}
/*
@@ -464,7 +469,14 @@
data = (data >> 8) | (*(uchar *) cp << 24);
}
- return write_word (info, wp, data);
+ rc = write_word (info, wp, data);
+
+ Done:
+
+ MEM_FLASH_ADDR = CMD_UNLOCK_BYPASS_RES1;
+ MEM_FLASH_ADDR = CMD_UNLOCK_BYPASS_RES2;
+
+ return (rc);
}
/*-----------------------------------------------------------------------