This is an automated email from Gerrit.
Дмитрий Шпак (dis...@yandex.ru) just uploaded a new patch set to Gerrit, which
you can find at http://openocd.zylin.com/2660
-- gerrit
commit c8dfd85161db8583a09366bb6329622e2a6117ce
Author: DmitryShpak <dis...@yandex.ru>
Date: Wed Mar 25 16:10:37 2015 +0300
contrib/loaders/flash/niiet.S : added source code for NIIET flashing
algorithn
Change-Id: Id00654b1a4371b707843688a76e2a3d6b340d9ec
Signed-off-by: DmitryShpak <dis...@yandex.ru>
diff --git a/contrib/loaders/flash/niiet.S b/contrib/loaders/flash/niiet.S
new file mode 100644
index 0000000..0406bf9
--- /dev/null
+++ b/contrib/loaders/flash/niiet.S
@@ -0,0 +1,112 @@
+/***************************************************************************
+ * Copyright (C) 2011 by Andreas Fritiofson *
+ * andreas.fritiof...@gmail.com *
+ * *
+ * Copyright (C) 2013 by Paul Fertser *
+ * fercer...@gmail.com *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ ***************************************************************************/
+
+/* Registers addresses */
+#define NIIET_FLASH_BASE 0xA001C000
+#define NIIET_FLASH_FMA 0x00 /* Address reg */
+#define NIIET_FLASH_FMD1 0x04 /* Data reg 1'st word */
+#define NIIET_FLASH_FMC 0x08 /* Command reg */
+#define NIIET_FLASH_FCIS 0x0C /* Operation Status reg */
+#define NIIET_FLASH_FCIM 0x10 /* Interrupt Mask reg (not used) */
+#define NIIET_FLASH_FCIC 0x14 /* Operation Status Clear reg */
+#define NIIET_FLASH_FMD2 0x50 /* Data reg 2'nd word */
+#define NIIET_FLASH_FMD3 0x54 /* Data reg 3'd word */
+#define NIIET_FLASH_FMD4 0x58 /* Data reg 4'th word*/
+
+/* Magic key*/
+#define NIIET_KEY 0xA4420000
+
+/* Bit masks for regs*/
+#define NIIET_FLASH_WRITE (1 << 0)
/* Main block write */
+#define NIIET_FLASH_PERASE (1 << 1)
/* Main block page erase */
+#define NIIET_FLASH_FERASE (1 << 2)
/* Main block full erase */
+#define NIIET_FLASH_IFBWRITE (1 << 4)
/* Info block write */
+#define NIIET_FLASH_IFBPERASE (1 << 5)
/* Info block erase */
+
+ /* Params:
+ * r0 - flash base (in), status (out)
+ * r1 - count (32bit)
+ * r2 - workarea start
+ * r3 - workarea end
+ * r4 - target address
+ * Clobbered:
+ * r5 - rp
+ * r6 - wp, tmp
+ * r7 - current FLASH_CMD
+ */
+
+
+flasher:
+ ldr r7, [r0, #NIIET_FLASH_FMD1]
+wait_fifo:
+ ldr r6, [r2, #0]
/* read wp */
+ cmp r6, #0
/* abort if wp == 0 */
+ beq exit
+ ldr r5, [r2, #4]
/* read rp */
+ cmp r5, r6
/* wait until rp != wp */
+ beq wait_fifo
+
+ /* "*target_address++ = *rp++" x4 words*/
+ ldr r6, [r5]
+ str r6, [r0, #NIIET_FLASH_FMD1]
+ ldr r6, [r5, #4]
+ str r6, [r0, #NIIET_FLASH_FMD2]
+ ldr r6, [r5, #8]
+ str r6, [r0, #NIIET_FLASH_FMD3]
+ ldr r6, [r5, #12]
+ str r6, [r0, #NIIET_FLASH_FMD4]
+ str r4, [r0, #NIIET_FLASH_FMA]
+
+ ldr r6, =(NIIET_KEY | NIIET_FLASH_WRITE)
+
+ str r6, [r0, #NIIET_FLASH_FMC]
+ bl waitFCIS /* wait for OperationComplete flag */
+
+ adds r5, #16
+ adds r4, #16
+
+ cmp r5, r3 /* wrap rp at end of buffer */
+ bcc no_wrap
+ mov r5, r2
+ adds r5, #8
+
+
+no_wrap:
+ str r5, [r2, #4] /* store rp */
+ subs r1, r1, #1 /* decrement word count */
+ cmp r1, #0
+ ble exit /* loop if not done */
+ b wait_fifo
+
+waitFCIS:
+ /* Loop here until OperationComplete flag is not set */
+ /* If OperationError flag is set instead - quit */
+ ldr r6, [r0, #NIIET_FLASH_FCIS]
+ tst r6, #2
+ bne exit
+ tst r6, #1
+ beq waitFCIS
+ ldr r6, =1
+ str r6, [r0, #NIIET_FLASH_FCIC]
+ bx lr
+
+exit:
+ mov r0, r6 /* return status in r0 */
+ bkpt #0 /* breakpoint */
+
+.size flasher, .-flasher
--
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