7 files changed, 209 insertions, 0 deletions

diff --git a/utils/hwstub/hwstub_protocol.h b/utils/hwstub/hwstub_protocol.h
index 4feab87f00..a34c65b1b5 100644
--- a/utils/hwstub/hwstub_protocol.h
+++ b/utils/hwstub/hwstub_protocol.h
@@ -95,6 +95,7 @@ struct hwstub_stmp_desc_t
 #define HWSTUB_TARGET_UNK       ('U' | 'N' << 8 | 'K' << 16 | ' ' << 24)
 #define HWSTUB_TARGET_STMP      ('S' | 'T' << 8 | 'M' << 16 | 'P' << 24)
 #define HWSTUB_TARGET_RK27      ('R' | 'K' << 8 | '2' << 16 | '7' << 24)
+#define HWSTUB_TARGET_PP        ('P' | 'P' << 8 | ' ' << 16 | ' ' << 24)
 
 struct hwstub_target_desc_t
 {
diff --git a/utils/hwstub/stub/SOURCES b/utils/hwstub/stub/SOURCES
index bcb782c282..9693fdd408 100644
--- a/utils/hwstub/stub/SOURCES
+++ b/utils/hwstub/stub/SOURCES
@@ -15,4 +15,8 @@ usb_drv_arc.c
 rk27xx/crt0.S
 rk27xx/usb_drv_rk27xx.c
 rk27xx/target.c
+#elif defined(CONFIG_PP)
+pp/crt0.S
+pp/target.c
+usb_drv_arc.c
 #endif
diff --git a/utils/hwstub/stub/pp/Makefile b/utils/hwstub/stub/pp/Makefile
new file mode 100644
index 0000000000..6e79a2b1c8
--- /dev/null
+++ b/utils/hwstub/stub/pp/Makefile
@@ -0,0 +1,14 @@
+#
+# common
+#
+CC=arm-elf-eabi-gcc
+LD=arm-elf-eabi-gcc
+AS=arm-elf-eabi-gcc
+OC=arm-elf-eabi-objcopy
+DEFINES=
+INCLUDES=-I$(CURDIR)
+GCCOPTS=-mcpu=arm926ej-s
+BUILD_DIR=$(CURDIR)/build/
+ROOT_DIR=$(CURDIR)/..
+
+include ../hwstub.make
diff --git a/utils/hwstub/stub/pp/crt0.S b/utils/hwstub/stub/pp/crt0.S
new file mode 100644
index 0000000000..38b6f18ac5
--- /dev/null
+++ b/utils/hwstub/stub/pp/crt0.S
@@ -0,0 +1,42 @@
+.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 */
+    /* The stub could be located at a virtual address so killing the MMU at
+     * this point would be mere suicide. We assume that the remap location
+     * is identically mapped and kill the MMU after the copy */
+
+    /* 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:
+    /* 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
+    /* 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 */
+    ldr     sp, =oc_stackend
+    b       main
diff --git a/utils/hwstub/stub/pp/hwstub.lds b/utils/hwstub/stub/pp/hwstub.lds
new file mode 100644
index 0000000000..baf10252e1
--- /dev/null
+++ b/utils/hwstub/stub/pp/hwstub.lds
@@ -0,0 +1,73 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2014 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(pp/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)
+    } 
+}
diff --git a/utils/hwstub/stub/pp/target-config.h b/utils/hwstub/stub/pp/target-config.h
new file mode 100644
index 0000000000..0774137277
--- /dev/null
+++ b/utils/hwstub/stub/pp/target-config.h
@@ -0,0 +1,9 @@
+#define CONFIG_PP
+#define IRAM_ORIG       0x40000000
+#define IRAM_SIZE       0x20000
+#define DRAM_ORIG       0x10f00000
+#define DRAM_SIZE       (MEMORYSIZE * 0x100000)
+#define CPU_ARM
+#define ARM_ARCH        5
+#define USB_BASE            0xc5000000
+#define USB_NUM_ENDPOINTS   2
\ No newline at end of file
diff --git a/utils/hwstub/stub/pp/target.c b/utils/hwstub/stub/pp/target.c
new file mode 100644
index 0000000000..14eab80080
--- /dev/null
+++ b/utils/hwstub/stub/pp/target.c
@@ -0,0 +1,66 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2014 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 "stddef.h"
+#include "target.h"
+#include "system.h"
+#include "logf.h"
+#include "memory.h"
+
+/**
+ *
+ * Global
+ *
+ */
+
+/* FIXME wrong for PP500x */
+#define USEC_TIMER   (*(volatile unsigned long *)(0x60005010))
+
+struct hwstub_target_desc_t __attribute__((aligned(2))) target_descriptor =
+{
+    sizeof(struct hwstub_target_desc_t),
+    HWSTUB_DT_TARGET,
+    HWSTUB_TARGET_PP,
+    "PP500x / PP502x / PP610x"
+};
+
+void target_init(void)
+{
+}
+
+void target_get_desc(int desc, void **buffer)
+{
+    *buffer = NULL;
+}
+
+void target_get_config_desc(void *buffer, int *size)
+{
+}
+
+void target_udelay(int us)
+{
+    uint32_t end = USEC_TIMER + us;
+    while(USEC_TIMER <= end);
+}
+
+void target_mdelay(int ms)
+{
+    return target_udelay(ms * 1000);
+}