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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 1a4596601fd395f3afb8f82f3f840c5e00bdd57a / . / post / lib_powerpc / two.c
blob: c6f7de44cd06191fb568bea472a06c9da710c37b [file] [log] [blame]
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100[diff] [blame]1/*
2 * (C) Copyright 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame^]5 * SPDX-License-Identifier: GPL-2.0+
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100[diff] [blame]6 */
7
8#include <common.h>
9
10/*
11 * CPU test
12 * Binary instructions instr rD,rA
13 *
14 * Logic instructions: neg
15 * Arithmetic instructions: addme, addze, subfme, subfze
16
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.
20 */
21
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100[diff] [blame]22#include <post.h>
23#include "cpu_asm.h"
24
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]25#if CONFIG_POST & CONFIG_SYS_POST_CPU
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100[diff] [blame]26
27extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op1);
28extern ulong cpu_post_makecr (long v);
29
30static struct cpu_post_two_s
31{
32 ulong cmd;
33 ulong op;
34 ulong res;
35} cpu_post_two_table[] =
36{
37 {
38 OP_NEG,
39 3,
40 -3
41 },
42 {
43 OP_NEG,
44 5,
45 -5
46 },
47 {
48 OP_ADDME,
49 6,
50 5
51 },
52 {
53 OP_ADDZE,
54 5,
55 5
56 },
57 {
58 OP_SUBFME,
59 6,
60 ~6 - 1
61 },
62 {
63 OP_SUBFZE,
64 5,
65 ~5
66 },
67};
Mike Frysingerd2397812011-05-10 07:28:35 +0000[diff] [blame]68static unsigned int cpu_post_two_size = ARRAY_SIZE(cpu_post_two_table);
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100[diff] [blame]69
70int cpu_post_test_two (void)
71{
72 int ret = 0;
73 unsigned int i, reg;
74 int flag = disable_interrupts();
75
76 for (i = 0; i < cpu_post_two_size && ret == 0; i++)
77 {
78 struct cpu_post_two_s *test = cpu_post_two_table + i;
79
80 for (reg = 0; reg < 32 && ret == 0; reg++)
81 {
82 unsigned int reg0 = (reg + 0) % 32;
83 unsigned int reg1 = (reg + 1) % 32;
84 unsigned int stk = reg < 16 ? 31 : 15;
85 unsigned long code[] =
86 {
87 ASM_STW(stk, 1, -4),
88 ASM_ADDI(stk, 1, -16),
89 ASM_STW(3, stk, 8),
90 ASM_STW(reg0, stk, 4),
91 ASM_STW(reg1, stk, 0),
92 ASM_LWZ(reg0, stk, 8),
93 ASM_11(test->cmd, reg1, reg0),
94 ASM_STW(reg1, stk, 8),
95 ASM_LWZ(reg1, stk, 0),
96 ASM_LWZ(reg0, stk, 4),
97 ASM_LWZ(3, stk, 8),
98 ASM_ADDI(1, stk, 16),
99 ASM_LWZ(stk, 1, -4),
100 ASM_BLR,
101 };
102 unsigned long codecr[] =
103 {
104 ASM_STW(stk, 1, -4),
105 ASM_ADDI(stk, 1, -16),
106 ASM_STW(3, stk, 8),
107 ASM_STW(reg0, stk, 4),
108 ASM_STW(reg1, stk, 0),
109 ASM_LWZ(reg0, stk, 8),
110 ASM_11(test->cmd, reg1, reg0) | BIT_C,
111 ASM_STW(reg1, stk, 8),
112 ASM_LWZ(reg1, stk, 0),
113 ASM_LWZ(reg0, stk, 4),
114 ASM_LWZ(3, stk, 8),
115 ASM_ADDI(1, stk, 16),
116 ASM_LWZ(stk, 1, -4),
117 ASM_BLR,
118 };
119 ulong res;
120 ulong cr;
121
122 if (ret == 0)
123 {
124 cr = 0;
125 cpu_post_exec_21 (code, & cr, & res, test->op);
126
127 ret = res == test->res && cr == 0 ? 0 : -1;
128
129 if (ret != 0)
130 {
131 post_log ("Error at two test %d !\n", i);
132 }
133 }
134
135 if (ret == 0)
136 {
137 cpu_post_exec_21 (codecr, & cr, & res, test->op);
138
139 ret = res == test->res &&
140 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
141
142 if (ret != 0)
143 {
144 post_log ("Error at two test %d !\n", i);
145 }
146 }
147 }
148 }
149
150 if (flag)
151 enable_interrupts();
152
153 return ret;
154}
155
156#endif