X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fcpu%2Fmpc8xx%2Fstart.S;h=f8aa93d6118269a012025bcfc146892b92b94da8;hb=cb33bda44f4bbf6fb58adf41dced313ca38da6fc;hp=7cf602fd4b8e9bc28233735332314a3d760b5417;hpb=a77034a8dfc7942ca08483138dccdebeacc36826;p=u-boot diff --git a/arch/powerpc/cpu/mpc8xx/start.S b/arch/powerpc/cpu/mpc8xx/start.S index 7cf602fd4b..f8aa93d611 100644 --- a/arch/powerpc/cpu/mpc8xx/start.S +++ b/arch/powerpc/cpu/mpc8xx/start.S @@ -3,23 +3,7 @@ * Copyright (C) 1999 Magnus Damm * Copyright (C) 2000,2001,2002 Wolfgang Denk * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ /* U-Boot - Startup Code for PowerPC based Embedded Boards @@ -37,23 +21,17 @@ * board_init will change CS0 to be positioned at the correct * address and (s)dram will be positioned at address 0 */ +#include #include #include -#include #include -#define CONFIG_8xx 1 /* needed for Linux kernel header files */ -#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */ - #include #include #include #include - -#ifndef CONFIG_IDENT_STRING -#define CONFIG_IDENT_STRING "" -#endif +#include /* We don't want the MMU yet. */ @@ -75,7 +53,7 @@ GOT_ENTRY(transfer_to_handler) GOT_ENTRY(__init_end) - GOT_ENTRY(_end) + GOT_ENTRY(__bss_end) GOT_ENTRY(__bss_start) END_GOT @@ -87,27 +65,13 @@ .long 0x27051956 /* U-Boot Magic Number */ .globl version_string version_string: - .ascii U_BOOT_VERSION - .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")" - .ascii CONFIG_IDENT_STRING, "\0" + .ascii U_BOOT_VERSION_STRING, "\0" . = EXC_OFF_SYS_RESET .globl _start _start: lis r3, CONFIG_SYS_IMMR@h /* position IMMR */ mtspr 638, r3 - li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */ - b boot_cold - - . = EXC_OFF_SYS_RESET + 0x10 - - .globl _start_warm -_start_warm: - li r21, BOOTFLAG_WARM /* Software reboot */ - b boot_warm - -boot_cold: -boot_warm: /* Initialize machine status; enable machine check interrupt */ /*----------------------------------------------------------------------*/ @@ -202,10 +166,10 @@ in_flash: /* r3: IMMR */ bl cpu_init_f /* run low-level CPU init code (from Flash) */ - mr r3, r21 - /* r3: BOOTFLAG */ bl board_init_f /* run 1st part of board init code (from Flash) */ + /* NOTREACHED - board_init_f() does not return */ + .globl _start_of_vectors _start_of_vectors: @@ -595,17 +559,19 @@ in_ram: beq 4f 3: lwzu r4,4(r3) lwzux r0,r4,r11 + cmpwi r0,0 add r0,r0,r11 - stw r10,0(r3) + stw r4,0(r3) + beq- 5f stw r0,0(r4) - bdnz 3b +5: bdnz 3b 4: clear_bss: /* * Now clear BSS segment */ lwz r3,GOT(__bss_start) - lwz r4,GOT(_end) + lwz r4,GOT(__bss_end) cmplw 0, r3, r4 beq 6f