From 8e633385912494ff5e871ec4c264d3a7db46fb98 Mon Sep 17 00:00:00 2001
From: Marcin Bukat <marcin.bukat@gmail.com>
Date: Thu, 18 Jul 2013 23:55:35 +0200
Subject: hwstub rk27xx port

Change-Id: I85ac57117911544b65ccd56eb16303e30be67cab
---
 utils/hwstub/stub/stmp/crt0.S     | 41 ++++++++++++++++++++++
 utils/hwstub/stub/stmp/hwstub.lds | 73 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 114 insertions(+)
 create mode 100644 utils/hwstub/stub/stmp/crt0.S
 create mode 100644 utils/hwstub/stub/stmp/hwstub.lds

(limited to 'utils/hwstub/stub/stmp')

diff --git a/utils/hwstub/stub/stmp/crt0.S b/utils/hwstub/stub/stmp/crt0.S
new file mode 100644
index 0000000000..8b2197823e
--- /dev/null
+++ b/utils/hwstub/stub/stmp/crt0.S
@@ -0,0 +1,41 @@
+.section    .text,"ax",%progbits
+.code       32
+.align      0x04
+.global     start
+start:
+    sub     r7, pc, #8 /* Copy running address */
+    msr     cpsr_c, #0xd3 /* enter supervisor mode, disable IRQ/FIQ */
+#ifdef CONFIG_STMP
+    /* Disable MMU, disable caching and buffering;
+     * use low exception range address */
+    mrc     p15, 0, r0, c1, c0, 0
+    ldr     r1, =0x3005
+    bic     r0, r1
+    mcr     p15, 0, r0, c1, c0, 0
+#endif
+    ldr     sp, =oc_stackend
+    /* Relocate to right address */
+    mov    r2, r7
+    ldr    r3, =_copystart
+    ldr    r4, =_copyend
+1:
+    cmp     r4, r3
+    ldrhi   r5, [r2], #4
+    strhi   r5, [r3], #4
+    bhi     1b
+
+    mov     r2, #0
+    mcr     p15, 0, r2, c7, c5, 0   @ Invalidate ICache
+    /* Jump to real location */
+    ldr     pc, =remap
+remap:
+    /* clear bss */
+    ldr     r2, =bss_start
+    ldr     r3, =bss_end
+    mov     r4, #0
+1:
+    cmp     r3, r2
+    strhi   r4, [r2], #4
+    bhi     1b
+    /* jump to C code */
+    b       main
diff --git a/utils/hwstub/stub/stmp/hwstub.lds b/utils/hwstub/stub/stmp/hwstub.lds
new file mode 100644
index 0000000000..8e3f4e68ba
--- /dev/null
+++ b/utils/hwstub/stub/stmp/hwstub.lds
@@ -0,0 +1,73 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2012 by Amaury Pouly
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+
+ENTRY(start)
+OUTPUT_FORMAT(elf32-littlearm)
+OUTPUT_ARCH(arm)
+STARTUP(stmp/crt0.o)
+
+#define IRAM_END_ADDR   (IRAM_ORIG + IRAM_SIZE)
+
+MEMORY
+{
+    OCRAM : ORIGIN = IRAM_ORIG, LENGTH = IRAM_SIZE
+}
+
+SECTIONS
+{
+    .octext :
+    {
+        _copystart = .;
+        oc_codestart = .;
+        *(.text*)
+        *(.icode*)
+        *(.data*)
+        *(.rodata*)
+        _copyend = .;
+    } > OCRAM
+
+    .bss (NOLOAD) :
+    {
+        bss_start = .;
+        *(.bss)
+        bss_end = .;
+    } > OCRAM
+
+    .stack (NOLOAD) :
+    {
+        oc_codeend = .;
+        oc_stackstart = .;
+        . += STACK_SIZE;
+        oc_stackend = .;
+        oc_bufferstart = .;
+    } > OCRAM
+
+    .ocend IRAM_END_ADDR (NOLOAD) :
+    {
+        oc_bufferend = .;
+    } > OCRAM
+
+    /DISCARD/ :
+    {
+        *(.eh_frame)
+    } 
+}
-- 
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