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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-01-23 11:19:22 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-01-23 11:19:22 +0100 |
| commit | a762dc2a49fad0e7797806fefd34d144b6d998b2 (patch) | |
| tree | 3f21a6ba6320a3a89581a3d1e2be5162bb8a904f /c/src/lib/libcpu/powerpc/mpc55xx/misc/flash.S | |
| parent | Google C++ Testing Framework 1.6.0. (diff) | |
| download | rtems-a762dc2a49fad0e7797806fefd34d144b6d998b2.tar.bz2 | |
Support for MPC5643L.
Rework of the start sequence to reduce the amount assembler code and to
support configuration tables which may be provided by the application.
Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc55xx/misc/flash.S')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/mpc55xx/misc/flash.S | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc55xx/misc/flash.S b/c/src/lib/libcpu/powerpc/mpc55xx/misc/flash.S deleted file mode 100644 index c1e75c88b2..0000000000 --- a/c/src/lib/libcpu/powerpc/mpc55xx/misc/flash.S +++ /dev/null @@ -1,112 +0,0 @@ -/** - * @file - * - * @ingroup mpc55xx_asm - * - * @brief Flash configuration. - */ - -/* - * Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved. - * - * embedded brains GmbH - * Obere Lagerstr. 30 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * $Id$ - */ - -#include <libcpu/powerpc-utility.h> -#include <mpc55xx/reg-defs.h> - -.section ".bsp_start_text", "ax" - -/* Optimized flash configurations (Table 13-15 [MPC5567 Microcontroller Reference Manual]) */ -.equ FLASH_SETTINGS_RESET, 0xff00 -.equ FLASH_SETTINGS_82, FLASH_BUICR_CPU_PREFTCH | FLASH_BUICR_APC_1 | FLASH_BUICR_RWSC_1 | FLASH_BUICR_WWSC_1 | FLASH_BUICR_DPFEN_3 | FLASH_BUICR_IPFEN_3 | FLASH_BUICR_PFLIM_6 | FLASH_BUICR_BFEN -.equ FLASH_SETTINGS_102, FLASH_BUICR_CPU_PREFTCH | FLASH_BUICR_APC_1 | FLASH_BUICR_RWSC_2 | FLASH_BUICR_WWSC_1 | FLASH_BUICR_DPFEN_3 | FLASH_BUICR_IPFEN_3 | FLASH_BUICR_PFLIM_6 | FLASH_BUICR_BFEN -.equ FLASH_SETTINGS_132, FLASH_BUICR_CPU_PREFTCH | FLASH_BUICR_APC_2 | FLASH_BUICR_RWSC_3 | FLASH_BUICR_WWSC_1 | FLASH_BUICR_DPFEN_3 | FLASH_BUICR_IPFEN_3 | FLASH_BUICR_PFLIM_6 | FLASH_BUICR_BFEN -.equ FLASH_SETTINGS_264, 0x01716B15 - -/** - * @fn void mpc55xx_flash_init() - * @brief Optimized flash configuration. - * @warning Code will be copied and executed on the stack. The stack pointer - * will not be updated, since this function has to work before memory - * initialization. - */ -GLOBAL_FUNCTION mpc55xx_flash_init - mflr r31 - - /* Flash settings dependent on system clock */ - bl mpc55xx_get_system_clock - LWI r4, 82000000 - cmpw r3, r4 - ble clock_82 - LWI r4, 102000000 - cmpw r3, r4 - ble clock_102 - LWI r4, 132000000 - cmpw r3, r4 - ble clock_132 - LWI r4, 264000000 - cmpw r3, r4 - ble clock_264 - LWI r30, FLASH_SETTINGS_RESET - b settings_done -clock_82: - LWI r30, FLASH_SETTINGS_82 - b settings_done -clock_102: - LWI r30, FLASH_SETTINGS_102 - b settings_done -clock_132: - LWI r30, FLASH_SETTINGS_132 - b settings_done -clock_264: - LWI r30, FLASH_SETTINGS_264 - b settings_done -settings_done: - - /* Copy store code on the stack */ - LA r3, store_start - LA r5, store_end - subf r5, r3, r5 - subf r4, r5, r1 - - /* Assert: Proper alignment of destination start */ - andi. r6, r4, 0x7 - bne twiddle - - /* Copy */ - bl mpc55xx_copy_8 - - LA r6, FLASH_BIUCR - - /* Execute store code */ - mtctr r4 - bctrl - - mtlr r31 - blr - -/* - * Store flash settings - */ - - .align 3 - .set store_start, . - stw r30, 0(r6) - isync - blr - .align 3 - .set store_end, . - -twiddle: - b twiddle |