diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mvme3100/start/start.S')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme3100/start/start.S | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/c/src/lib/libbsp/powerpc/mvme3100/start/start.S b/c/src/lib/libbsp/powerpc/mvme3100/start/start.S deleted file mode 100644 index 493720e0c7..0000000000 --- a/c/src/lib/libbsp/powerpc/mvme3100/start/start.S +++ /dev/null @@ -1,90 +0,0 @@ -/* - * start.S : RTEMS entry point - * - * Copyright (C) 1999 Eric Valette. valette@crf.canon.fr - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - * - * Modified for mvme3100 by T. Straumann, 2007. - * - */ - -#include <rtems/asm.h> -#include <rtems/score/cpu.h> -#include <rtems/powerpc/powerpc.h> - -#include <bspopts.h> - -#define SYNC \ - sync; \ - isync - -#define KERNELBASE 0x0 - -/* cannot include <bsp.h> from assembly :-( */ -#ifndef BSP_8540_CCSR_BASE -#define BSP_8540_CCSR_BASE 0xe1000000 -#endif - -#define ERR_DISABLE_REG (BSP_8540_CCSR_BASE + 0x2e44) - - .text - .globl __rtems_entry_point - .type __rtems_entry_point,@function -__rtems_entry_point: - mr r31,r3 - mr r30,r4 - mr r29,r5 - mr r28,r6 - mr r27,r7 - /* disable checking for memory-select errors; motload has all TLBs - * mapping a possible larger area as memory (not-guarded, caching-enabled) - * than actual physical memory is available. - * In case of speculative loads this may cause 'memory-select' errors - * which seem to raise 'core_fault_in' (found no description in - * the manual but I experienced this problem). - * Such errors (if HID1[RFXE] is clear) may *stall* execution - * leading to mysterious 'hangs'. - * Note: enabling HID1[RFXE] at this point makes no sense since - * exceptions are not configured yet. Therefore we disable - * memory-select errors. - * Eventually (bspstart.c) we want to delete TLB entries for - * which no physical memory is present. - */ - lis r3, ERR_DISABLE_REG@ha - lwz r4, ERR_DISABLE_REG@l(r3) - /* disable memory-select errors */ - ori r4, r4, 1 - stw r4, ERR_DISABLE_REG@l(r3) - - /* Use MotLoad's TLB setup for now; caches are on already */ - bl __eabi /* setup EABI and SYSV environment */ - bl zero_bss - /* - * restore original args - */ - mr r3,r31 - mr r4,r30 - mr r5,r29 - mr r6,r28 - mr r7,r27 - bl save_boot_params - addis r9,r0, (__stack-PPC_MINIMUM_STACK_FRAME_SIZE)@ha - addi r9,r9, (__stack-PPC_MINIMUM_STACK_FRAME_SIZE)@l - /* align down to 16-bytes */ - li r5, (CPU_STACK_ALIGNMENT - 1) - andc r1, r9, r5 - - /* NULL ptr to back chain */ - li r0, 0 - stw r0, 0(r1) - - /* - * We are now in a environment that is totally independent from - * bootloader setup. - */ - /* pass result of 'save_boot_params' to 'boot_card' in R3 */ - bl boot_card - /* point of no return: reset board here ? */ |