diff options
Diffstat (limited to 'post/cpu/b.c')
| -rw-r--r-- | post/cpu/b.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/post/cpu/b.c b/post/cpu/b.c deleted file mode 100644 index b4b17c8..0000000 --- a/post/cpu/b.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - * (C) Copyright 2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * 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 - */ - -#include <common.h> - -/* - * CPU test - * Branch instructions: b, bl, bc - * - * The first 2 instructions (b, bl) are verified by jumping - * to a fixed address and checking whether control was transfered - * to that very point. For the bl instruction the value of the - * link register is checked as well (using mfspr). - * To verify the bc instruction various combinations of the BI/BO - * fields, the CTR and the condition register values are - * checked. The list of such combinations is pre-built and - * linked in U-Boot at build time. - */ - -#ifdef CONFIG_POST - -#include <post.h> -#include "cpu_asm.h" - -#if CONFIG_POST & CFG_POST_CPU - -extern void cpu_post_exec_11 (ulong *code, ulong *res, ulong op1); -extern void cpu_post_exec_31 (ulong *code, ulong *ctr, ulong *lr, ulong *jump, - ulong cr); - -static int cpu_post_test_bc (ulong cmd, ulong bo, ulong bi, - int pjump, int dec, int link, ulong pctr, ulong cr) -{ - int ret = 0; - ulong lr = 0; - ulong ctr = pctr; - ulong jump; - - unsigned long code[] = - { - ASM_MTCR(6), - ASM_MFLR(6), - ASM_MTCTR(3), - ASM_MTLR(4), - ASM_LI(5, 1), - ASM_3O(cmd, bo, bi, 8), - ASM_LI(5, 0), - ASM_MFCTR(3), - ASM_MFLR(4), - ASM_MTLR(6), - ASM_BLR, - }; - - cpu_post_exec_31 (code, &ctr, &lr, &jump, cr); - - if (ret == 0) - ret = pjump == jump ? 0 : -1; - if (ret == 0) - { - if (dec) - ret = pctr == ctr + 1 ? 0 : -1; - else - ret = pctr == ctr ? 0 : -1; - } - if (ret == 0) - { - if (link) - ret = lr == (ulong) code + 24 ? 0 : -1; - else - ret = lr == 0 ? 0 : -1; - } - - return ret; -} - -int cpu_post_test_b (void) -{ - int ret = 0; - unsigned int i; - - if (ret == 0) - { - ulong code[] = - { - ASM_MFLR(4), - ASM_MTLR(3), - ASM_B(4), - ASM_MFLR(3), - ASM_MTLR(4), - ASM_BLR, - }; - ulong res; - - cpu_post_exec_11 (code, &res, 0); - - ret = res == 0 ? 0 : -1; - - if (ret != 0) - { - post_log ("Error at b1 test !\n"); - } - } - - if (ret == 0) - { - ulong code[] = - { - ASM_MFLR(4), - ASM_MTLR(3), - ASM_BL(4), - ASM_MFLR(3), - ASM_MTLR(4), - ASM_BLR, - }; - ulong res; - - cpu_post_exec_11 (code, &res, 0); - - ret = res == (ulong)code + 12 ? 0 : -1; - - if (ret != 0) - { - post_log ("Error at b2 test !\n"); - } - } - - if (ret == 0) - { - ulong cc, cd; - int cond; - ulong ctr; - int link; - - i = 0; - - for (cc = 0; cc < 4 && ret == 0; cc++) - { - for (cd = 0; cd < 4 && ret == 0; cd++) - { - for (link = 0; link <= 1 && ret == 0; link++) - { - for (cond = 0; cond <= 1 && ret == 0; cond++) - { - for (ctr = 1; ctr <= 2 && ret == 0; ctr++) - { - int dec = cd < 2; - int cr = cond ? 0x80000000 : 0x00000000; - int jumpc = cc >= 2 || - (cc == 0 && !cond) || - (cc == 1 && cond); - int jumpd = cd >= 2 || - (cd == 0 && ctr != 1) || - (cd == 1 && ctr == 1); - int jump = jumpc && jumpd; - - ret = cpu_post_test_bc (link ? OP_BCL : OP_BC, - (cc << 3) + (cd << 1), 0, jump, dec, link, - ctr, cr); - - if (ret != 0) - { - post_log ("Error at b3 test %d !\n", i); - } - - i++; - } - } - } - } - } - } - - return ret; -} - -#endif -#endif |