setup.c
上传用户:jlfgdled
上传日期:2013-04-10
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文件大小:2k
- /*
- * Copyright (C) 2000, 2001 Broadcom Corporation
- *
- * 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.
- */
- #include <asm/sibyte/sb1250.h>
- #include <asm/sibyte/sb1250_regs.h>
- #include <asm/sibyte/sb1250_scd.h>
- #include <asm/sibyte/64bit.h>
- /* Setup code likely to be common to all BCM1250 platforms */
- unsigned int sb1250_pass;
- void sb1250_setup(void)
- {
- int bad_config = 0;
- sb1250_pass = G_SYS_REVISION(in64(IO_SPACE_BASE | A_SCD_SYSTEM_REVISION));
- /* sb1250_pass is more specific than "1", "2" etc. There are
- many revision numbers corresponding to "Pass 2". */
- switch(sb1250_pass) {
- case 1:
- #ifndef CONFIG_SB1_PASS_1_WORKAROUNDS
- printk("@@@@ This is a pass 1 board, and the kernel doesn't have the proper workarounds compiled in. @@@@");
- bad_config = 1;
- #endif
- break;
- default:
- #if defined(CONFIG_CPU_HAS_PREFETCH) || !defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
- printk("@@@@ This is a pass 2 board, and the kernel doesn't have the proper workarounds compiled in. @@@@");
- printk("@@@@ Prefetches are enabled in this kernel, but are buggy on this board. @@@@");
- bad_config = 1;
- #endif
- break;
- }
- /* XXXKW this is too early for panic/printk to actually do much! */
- if (bad_config) {
- panic("Invalid configuration for this pass.");
- }
- }