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git.ipfire.org Git - people/ms/u-boot.git/blob - post/lib_powerpc/threex.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
12 * Ternary instructions instr rA,rS,rB
14 * Logic instructions: or, orc, xor, nand, nor, eqv
15 * Shift instructions: slw, srw, sraw
17 * The test contains a pre-built table of instructions, operands and
18 * expected results. For each table entry, the test will cyclically use
19 * different sets of operand registers and result registers.
25 #if CONFIG_POST & CONFIG_SYS_POST_CPU
27 extern void cpu_post_exec_22 (ulong
*code
, ulong
*cr
, ulong
*res
, ulong op1
,
29 extern ulong
cpu_post_makecr (long v
);
31 static struct cpu_post_threex_s
37 } cpu_post_threex_table
[] =
112 static unsigned int cpu_post_threex_size
= ARRAY_SIZE(cpu_post_threex_table
);
114 int cpu_post_test_threex (void)
118 int flag
= disable_interrupts();
120 for (i
= 0; i
< cpu_post_threex_size
&& ret
== 0; i
++)
122 struct cpu_post_threex_s
*test
= cpu_post_threex_table
+ i
;
124 for (reg
= 0; reg
< 32 && ret
== 0; reg
++)
126 unsigned int reg0
= (reg
+ 0) % 32;
127 unsigned int reg1
= (reg
+ 1) % 32;
128 unsigned int reg2
= (reg
+ 2) % 32;
129 unsigned int stk
= reg
< 16 ? 31 : 15;
130 unsigned long code
[] =
133 ASM_ADDI(stk
, 1, -24),
136 ASM_STW(reg0
, stk
, 8),
137 ASM_STW(reg1
, stk
, 4),
138 ASM_STW(reg2
, stk
, 0),
139 ASM_LWZ(reg1
, stk
, 12),
140 ASM_LWZ(reg0
, stk
, 16),
141 ASM_12X(test
->cmd
, reg2
, reg1
, reg0
),
142 ASM_STW(reg2
, stk
, 12),
143 ASM_LWZ(reg2
, stk
, 0),
144 ASM_LWZ(reg1
, stk
, 4),
145 ASM_LWZ(reg0
, stk
, 8),
147 ASM_ADDI(1, stk
, 24),
151 unsigned long codecr
[] =
154 ASM_ADDI(stk
, 1, -24),
157 ASM_STW(reg0
, stk
, 8),
158 ASM_STW(reg1
, stk
, 4),
159 ASM_STW(reg2
, stk
, 0),
160 ASM_LWZ(reg1
, stk
, 12),
161 ASM_LWZ(reg0
, stk
, 16),
162 ASM_12X(test
->cmd
, reg2
, reg1
, reg0
) | BIT_C
,
163 ASM_STW(reg2
, stk
, 12),
164 ASM_LWZ(reg2
, stk
, 0),
165 ASM_LWZ(reg1
, stk
, 4),
166 ASM_LWZ(reg0
, stk
, 8),
168 ASM_ADDI(1, stk
, 24),
178 cpu_post_exec_22 (code
, & cr
, & res
, test
->op1
, test
->op2
);
180 ret
= res
== test
->res
&& cr
== 0 ? 0 : -1;
184 post_log ("Error at threex test %d !\n", i
);
190 cpu_post_exec_22 (codecr
, & cr
, & res
, test
->op1
, test
->op2
);
192 ret
= res
== test
->res
&&
193 (cr
& 0xe0000000) == cpu_post_makecr (res
) ? 0 : -1;
197 post_log ("Error at threex test %d !\n", i
);