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86446d3a5d
Some CPU POST tests did not disable the interrupts while running. This seems to be necessary to protect this self modifying code. Signed-off-by: Stefan Roese <sr@denx.de>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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/*
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* CPU test
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* Load/store string instructions: lswi, stswi, lswx, stswx
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*
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* Several consecutive bytes from a source memory buffer are loaded
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* left to right into GPRs. After that, the bytes are stored
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* from the GPRs into a target memory buffer. The contents
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* of the source and target buffers are then compared.
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*/
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#include <post.h>
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#include "cpu_asm.h"
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#if CONFIG_POST & CFG_POST_CPU
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extern void cpu_post_exec_02 (ulong *code, ulong op1, ulong op2);
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extern void cpu_post_exec_04 (ulong *code, ulong op1, ulong op2, ulong op3,
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ulong op4);
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#include <bedbug/regs.h>
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int cpu_post_test_string (void)
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{
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int ret = 0;
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unsigned int i;
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int flag = disable_interrupts();
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if (ret == 0)
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{
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char src [31], dst [31];
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ulong code[] =
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{
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ASM_LSWI(5, 3, 31),
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ASM_STSWI(5, 4, 31),
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ASM_BLR,
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};
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for (i = 0; i < sizeof(src); i ++)
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{
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src[i] = (char) i;
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dst[i] = 0;
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}
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cpu_post_exec_02(code, (ulong)src, (ulong)dst);
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ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
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}
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if (ret == 0)
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{
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char src [95], dst [95];
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ulong code[] =
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{
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ASM_LSWX(8, 3, 5),
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ASM_STSWX(8, 4, 5),
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ASM_BLR,
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};
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for (i = 0; i < sizeof(src); i ++)
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{
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src[i] = (char) i;
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dst[i] = 0;
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}
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cpu_post_exec_04(code, (ulong)src, (ulong)dst, 0, sizeof(src));
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ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
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}
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if (ret != 0)
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{
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post_log ("Error at string test !\n");
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}
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if (flag)
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enable_interrupts();
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return ret;
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}
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#endif
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