Merge with /home/git/u-boot

1 files changed, 259 insertions, 0 deletions

diff --git a/post/lib_ppc/three.c b/post/lib_ppc/three.c
new file mode 100644
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+++ b/post/lib_ppc/three.c
@@ -0,0 +1,259 @@
+/*
+ * (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
+ * Ternary instructions		instr rD,rA,rB
+ *
+ * Arithmetic instructions:	add, addc, adde, subf, subfc, subfe,
+ *				mullw, mulhw, mulhwu, divw, divwu
+ *
+ * The test contains a pre-built table of instructions, operands and
+ * expected results. For each table entry, the test will cyclically use
+ * different sets of operand registers and result registers.
+ */
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+#include "cpu_asm.h"
+
+#if CONFIG_POST & CFG_POST_CPU
+
+extern void cpu_post_exec_22 (ulong *code, ulong *cr, ulong *res, ulong op1,
+    ulong op2);
+extern ulong cpu_post_makecr (long v);
+
+static struct cpu_post_three_s
+{
+    ulong cmd;
+    ulong op1;
+    ulong op2;
+    ulong res;
+} cpu_post_three_table[] =
+{
+    {
+    	OP_ADD,
+	100,
+	200,
+	300
+    },
+    {
+    	OP_ADD,
+	100,
+	-200,
+	-100
+    },
+    {
+    	OP_ADDC,
+	100,
+	200,
+	300
+    },
+    {
+    	OP_ADDC,
+	100,
+	-200,
+	-100
+    },
+    {
+    	OP_ADDE,
+	100,
+	200,
+	300
+    },
+    {
+    	OP_ADDE,
+	100,
+	-200,
+	-100
+    },
+    {
+    	OP_SUBF,
+	100,
+	200,
+	100
+    },
+    {
+    	OP_SUBF,
+	300,
+	200,
+	-100
+    },
+    {
+    	OP_SUBFC,
+	100,
+	200,
+	100
+    },
+    {
+    	OP_SUBFC,
+	300,
+	200,
+	-100
+    },
+    {
+    	OP_SUBFE,
+	100,
+	200,
+	200 + ~100
+    },
+    {
+    	OP_SUBFE,
+	300,
+	200,
+	200 + ~300
+    },
+    {
+    	OP_MULLW,
+	200,
+	300,
+	200 * 300
+    },
+    {
+    	OP_MULHW,
+	0x10000000,
+	0x10000000,
+	0x1000000
+    },
+    {
+    	OP_MULHWU,
+	0x80000000,
+	0x80000000,
+	0x40000000
+    },
+    {
+    	OP_DIVW,
+	-20,
+	5,
+	-4
+    },
+    {
+    	OP_DIVWU,
+	0x8000,
+	0x200,
+	0x40
+    },
+};
+static unsigned int cpu_post_three_size =
+    sizeof (cpu_post_three_table) / sizeof (struct cpu_post_three_s);
+
+int cpu_post_test_three (void)
+{
+    int ret = 0;
+    unsigned int i, reg;
+    int flag = disable_interrupts();
+
+    for (i = 0; i < cpu_post_three_size && ret == 0; i++)
+    {
+	struct cpu_post_three_s *test = cpu_post_three_table + i;
+
+	for (reg = 0; reg < 32 && ret == 0; reg++)
+	{
+	    unsigned int reg0 = (reg + 0) % 32;
+	    unsigned int reg1 = (reg + 1) % 32;
+	    unsigned int reg2 = (reg + 2) % 32;
+	    unsigned int stk = reg < 16 ? 31 : 15;
+    	    unsigned long code[] =
+	    {
+		ASM_STW(stk, 1, -4),
+		ASM_ADDI(stk, 1, -24),
+		ASM_STW(3, stk, 12),
+		ASM_STW(4, stk, 16),
+		ASM_STW(reg0, stk, 8),
+		ASM_STW(reg1, stk, 4),
+		ASM_STW(reg2, stk, 0),
+		ASM_LWZ(reg1, stk, 12),
+		ASM_LWZ(reg0, stk, 16),
+		ASM_12(test->cmd, reg2, reg1, reg0),
+		ASM_STW(reg2, stk, 12),
+		ASM_LWZ(reg2, stk, 0),
+		ASM_LWZ(reg1, stk, 4),
+		ASM_LWZ(reg0, stk, 8),
+		ASM_LWZ(3, stk, 12),
+		ASM_ADDI(1, stk, 24),
+		ASM_LWZ(stk, 1, -4),
+		ASM_BLR,
+	    };
+    	    unsigned long codecr[] =
+	    {
+		ASM_STW(stk, 1, -4),
+		ASM_ADDI(stk, 1, -24),
+		ASM_STW(3, stk, 12),
+		ASM_STW(4, stk, 16),
+		ASM_STW(reg0, stk, 8),
+		ASM_STW(reg1, stk, 4),
+		ASM_STW(reg2, stk, 0),
+		ASM_LWZ(reg1, stk, 12),
+		ASM_LWZ(reg0, stk, 16),
+		ASM_12(test->cmd, reg2, reg1, reg0) | BIT_C,
+		ASM_STW(reg2, stk, 12),
+		ASM_LWZ(reg2, stk, 0),
+		ASM_LWZ(reg1, stk, 4),
+		ASM_LWZ(reg0, stk, 8),
+		ASM_LWZ(3, stk, 12),
+		ASM_ADDI(1, stk, 24),
+		ASM_LWZ(stk, 1, -4),
+		ASM_BLR,
+	    };
+	    ulong res;
+	    ulong cr;
+
+	    if (ret == 0)
+	    {
+ 	    	cr = 0;
+	    	cpu_post_exec_22 (code, & cr, & res, test->op1, test->op2);
+
+	    	ret = res == test->res && cr == 0 ? 0 : -1;
+
+	    	if (ret != 0)
+	    	{
+	            post_log ("Error at three test %d !\n", i);
+	    	}
+	    }
+
+	    if (ret == 0)
+	    {
+	    	cpu_post_exec_22 (codecr, & cr, & res, test->op1, test->op2);
+
+	    	ret = res == test->res &&
+		      (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
+
+	    	if (ret != 0)
+	    	{
+	            post_log ("Error at three test %d !\n", i);
+	        }
+	    }
+	}
+    }
+
+    if (flag)
+    	enable_interrupts();
+
+    return ret;
+}
+
+#endif
+#endif