]>
git.ipfire.org Git - people/ms/u-boot.git/blob - post/lib_powerpc/load.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
12 * Load instructions: lbz(x)(u), lhz(x)(u), lha(x)(u), lwz(x)(u)
14 * All operations are performed on a 16-byte array. The array
15 * is 4-byte aligned. The base register points to offset 8.
16 * The immediate offset (index register) ranges in [-8 ... +7].
17 * The test cases are composed so that they do not
18 * cause alignment exceptions.
19 * The test contains a pre-built table describing all test cases.
20 * The table entry contains:
21 * the instruction opcode, the array contents, the value of the index
22 * register and the expected value of the destination register.
23 * After executing the instruction, the test verifies the
24 * value of the destination register and the value of the base
25 * register (it must change for "load with update" instructions).
31 #if CONFIG_POST & CONFIG_SYS_POST_CPU
33 extern void cpu_post_exec_22w (ulong
*code
, ulong
*op1
, ulong op2
, ulong
*op3
);
34 extern void cpu_post_exec_21w (ulong
*code
, ulong
*op1
, ulong
*op2
);
36 static struct cpu_post_load_s
43 } cpu_post_load_table
[] =
158 static unsigned int cpu_post_load_size
= ARRAY_SIZE(cpu_post_load_table
);
160 int cpu_post_test_load (void)
164 int flag
= disable_interrupts();
166 for (i
= 0; i
< cpu_post_load_size
&& ret
== 0; i
++)
168 struct cpu_post_load_s
*test
= cpu_post_load_table
+ i
;
170 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
171 ulong base0
= (ulong
) (data
+ 8);
179 ASM_12(test
->cmd
, 5, 3, 4),
183 cpu_post_exec_22w (code
, &base
, test
->offset
, &value
);
189 ASM_11I(test
->cmd
, 4, 3, test
->offset
),
193 cpu_post_exec_21w (code
, &base
, &value
);
199 ret
= base
== base0
+ test
->offset
? 0 : -1;
201 ret
= base
== base0
? 0 : -1;
209 ret
= *(uchar
*)(base0
+ test
->offset
) == value
?
213 ret
= *(ushort
*)(base0
+ test
->offset
) == value
?
217 ret
= *(short *)(base0
+ test
->offset
) == value
?
221 ret
= *(ulong
*)(base0
+ test
->offset
) == value
?
229 post_log ("Error at load test %d !\n", i
);