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authorRafaël Carré <rafael.carre@gmail.com>2009-05-28 18:27:08 +0000
committerRafaël Carré <rafael.carre@gmail.com>2009-05-28 18:27:08 +0000
commit96165abec2da60c466659fa0e68e06d97587d51a (patch)
tree5445bddea2ac0e706546ce972d61dacc8d0f81e2 /rbutil/mkamsboot/dualboot.S
parentbebc8587cfa7896684278d824ed5b28b2e9f9df1 (diff)
downloadrockbox-96165abec2da60c466659fa0e68e06d97587d51a.tar.gz
rockbox-96165abec2da60c466659fa0e68e06d97587d51a.zip
FS#10253 : mkamsboot v1.0mkamsboot_1.0
- Bump version to 1.0 - Add Clipv2 target - Make mkamsboot work as a library (work by domonoky : FS#10185, with a few modifications by me) . Use a macro with variadic arguments for error cases in functions which might error. . Add detailed descriptions to functions exported by the library (in the header file) - modify bin2c.c to produce only one pair of .c/.h files with several files embedded in it - move files needing to be built by an ARM cross compiler into dualboot/ - commit produced .c/.h files (containing nrv2e_d8.S and dualboot.S built for Clip, Fuze, e200v2, c200v2, m200v4, Clipv2) - Write a real README file - cosmetics: indent dualboot.S properly, remove trailing spaces, limit lines to 80 characters - comments: add/correct comments in dualboot.S and mkamsboot.c - move back extract_fw.c to utils/AMS/hacking git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21118 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'rbutil/mkamsboot/dualboot.S')
-rw-r--r--rbutil/mkamsboot/dualboot.S184
1 files changed, 0 insertions, 184 deletions
diff --git a/rbutil/mkamsboot/dualboot.S b/rbutil/mkamsboot/dualboot.S
deleted file mode 100644
index a4d0469060..0000000000
--- a/rbutil/mkamsboot/dualboot.S
+++ /dev/null
@@ -1,184 +0,0 @@
-/***************************************************************************
- * __________ __ ___.
- * Open \______ \ ____ ____ | | _\_ |__ _______ ___
- * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
- * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
- * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
- * \/ \/ \/ \/ \/
- * $Id$
- *
- * Copyright (C) 2008 Rafaël Carré
- *
- * 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.
- *
- ****************************************************************************/
-
-.text
-
-.set IRAM_SIZE, 0x50000
-
-.set GPIOA, 0xC80B0000
-.set GPIOB, 0xC80C0000
-.set GPIOC, 0xC80D0000
-.set GPIOD, 0xC80E0000
-.set CGU_PERI, 0xC80F0014
-
-
-/* Vectors */
- ldr pc, =start
-.word 0
-.word 0
-.word 0
-.word 0
-.word 0
-.word 0
-.word 0
-
-/* These values are filled in by mkamsboot - don't move them from offset 0x20 */
-uclunpack_end: .word 0 /* End of the ucl_unpack function */
-uclunpack_size: .word 0 /* Size in bytes of the ucl_unpack function */
-
-ucl_of_end: .word 0 /* End of the ucl-compressed OF image */
-ucl_of_size: .word 0 /* Size in bytes of the compressed OF image */
-
-ucl_rb_end: .word 0 /* End of the ucl-compressed RB image */
-ucl_rb_size: .word 0 /* Size in bytes of the compressed RB image */
-
-
-start:
- /* First copy the UCL unpack function to the end of RAM */
- ldr r0, uclunpack_end /* Source */
- ldr r1, uclunpack_size /* Source length */
- sub r2, r0, r1 /* Source start - 1*/
-
- ldr r3, =(IRAM_SIZE-1) /* Destination end */
-
-uclcopy:
- ldrb r4, [r0], #-1
- strb r4, [r3], #-1
- cmp r2, r0
- bne uclcopy
-
- add r5, r3, #2 /* r5 is entry point of copy of uclunpack */
- /* function, plus one (for thumb mode */
-
- /* enable gpio clock */
- ldr r0, =CGU_PERI
- ldr r1, [r0]
- orr r1, r1, #(1<<16)
- str r1, [r0]
-
-
-#ifndef SANSA_M200V4 /* this doesnt work for m200 */
- /* we check A3 unconditionally of the model because it seems to be */
- /* either hold, either usb on every model */
- /* TODO: make it USB on all AMS Sansas for consistency, USB is safer too */
-
- ldr r0, =GPIOA
- mov r1, #0
- str r1, [r0, #0x400]
-#ifdef SANSA_C200V2
- ldr r1, [r0, #0x8] /* USB is A1 on C200 */
-#elif defined(SANSA_CLIP)
- ldr r1, [r0, #0x100] /* USB is A6 on Clip */
-#else
- ldr r1, [r0, #0x20] /* read pin A3 */
-#endif
- cmp r1, #0
- bne boot_of
-#endif
-
- /* here are model specific tests, for dual boot without a computer */
-
-#ifdef SANSA_CLIP
- /* LEFT button */
-.set row, (1<<5) /* enable output on C5 */
- ldr r0, =GPIOC
- mov r1, #row
- str r1, [r0, #0x400]
- str r1, [r0, #(4*row)]
-
-.set col, (1<<0) /* read keyscan column B0 */
- ldr r0, =GPIOB
- mov r1, #0
- str r1, [r0, #0x400]
- ldr r1, [r0, #(4*col)]
-
- cmp r1, #0
- bne boot_of
-#elif defined(SANSA_E200V2) || defined(SANSA_FUZE)
- /* LEFT button */
- ldr r0, =GPIOC
- mov r1, #0
- str r1, [r0, #0x400]
- ldr r1, [r0, #0x20] /* read pin C3 */
-
- cmp r1, #0 /* C3 = #0 means button pressed */
- beq boot_of
-#elif defined(SANSA_C200V2)
- /* check for RIGHT on C6, should maybe changed to LEFT as soon as it
- * known in which pin that is in order for consistency */
- ldr r0, =GPIOC
- mov r1, #0
- str r1, [r0, #0x400] /* set pin to output */
-
- ldr r1, [r0, #256] /* 1<<(6+2) */
- cmp r1, #0 /* C6 low means button pressed */
- beq boot_of
-#elif defined(SANSA_M200V4)
- /* LEFT button */
-.set row, (1<<5) /* enable output on A5 */
- ldr r0, =GPIOA
- mov r1, #row
- str r1, [r0, #0x400]
- str r1, [r0, #(4*row)]
-
-.set col, (1<<0) /* read keyscan column A0 */
- ldr r2, [r0, #(4*col)]
-
- /* check value read (1 means button pressed) */
- cmp r2, #0
- bne boot_of
-#else
- #error No target-specific key check defined!
-#endif
-
- /* No button was held, so we boot rockbox */
- ldr r0, ucl_rb_end /* Address of compressed image */
- ldr r1, ucl_rb_size /* Compressed size */
- b decompress
-
-boot_of:
- ldr r0, ucl_of_end /* Address of compressed image */
- ldr r1, ucl_of_size /* Compressed size */
-
-
-decompress:
- /* At this point: */
- /* r5 = entry point (plus one for thumb) of uclunpack function */
- /* r3 = destination_end for copy of UCL image */
- /* r0 = source_end for UCL image to copy */
- /* r1 = size of UCL image to copy */
-
- sub r4, r3, r1 /* r4 := destination_start - 1 */
-
-fw_copy:
- ldrb r2, [r0], #-1
- strb r2, [r3], #-1
- cmp r3, r4 /* Stop when we reached dest_start-1 */
- bne fw_copy
-
- /* Call the ucl decompress function, which will branch to 0x0 */
- /* on completion */
- add r0, r3, #1 /* r0 := Start of compressed image */
- /* r1 already contains compressed size */
- mov r2, #0 /* r2 := Destination for unpacking */
- bx r5 /* Branch to uclunpack, switching to thumb */
-
- /* never reached */