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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
239 lines
3.3 KiB
C
239 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#include <common.h>
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/*
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* CPU test
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* Load instructions: lbz(x)(u), lhz(x)(u), lha(x)(u), lwz(x)(u)
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*
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* All operations are performed on a 16-byte array. The array
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* is 4-byte aligned. The base register points to offset 8.
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* The immediate offset (index register) ranges in [-8 ... +7].
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* The test cases are composed so that they do not
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* cause alignment exceptions.
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* The test contains a pre-built table describing all test cases.
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* The table entry contains:
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* the instruction opcode, the array contents, the value of the index
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* register and the expected value of the destination register.
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* After executing the instruction, the test verifies the
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* value of the destination register and the value of the base
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* register (it must change for "load with update" instructions).
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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 & CONFIG_SYS_POST_CPU
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extern void cpu_post_exec_22w (ulong *code, ulong *op1, ulong op2, ulong *op3);
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extern void cpu_post_exec_21w (ulong *code, ulong *op1, ulong *op2);
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static struct cpu_post_load_s
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{
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ulong cmd;
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uint width;
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int update;
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int index;
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ulong offset;
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} cpu_post_load_table[] =
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{
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{
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OP_LWZ,
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4,
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0,
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0,
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4
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},
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{
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OP_LHA,
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3,
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0,
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0,
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2
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},
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{
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OP_LHZ,
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2,
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0,
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0,
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2
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},
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{
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OP_LBZ,
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1,
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0,
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0,
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1
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},
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{
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OP_LWZU,
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4,
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1,
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0,
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4
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},
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{
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OP_LHAU,
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3,
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1,
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0,
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2
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},
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{
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OP_LHZU,
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2,
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1,
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0,
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2
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},
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{
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OP_LBZU,
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1,
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1,
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0,
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1
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},
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{
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OP_LWZX,
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4,
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0,
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1,
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4
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},
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{
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OP_LHAX,
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3,
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0,
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1,
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2
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},
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{
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OP_LHZX,
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2,
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0,
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1,
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2
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},
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{
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OP_LBZX,
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1,
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0,
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1,
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1
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},
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{
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OP_LWZUX,
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4,
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1,
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1,
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4
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},
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{
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OP_LHAUX,
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3,
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1,
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1,
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2
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},
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{
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OP_LHZUX,
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2,
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1,
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1,
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2
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},
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{
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OP_LBZUX,
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1,
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1,
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1,
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1
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},
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};
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static unsigned int cpu_post_load_size = ARRAY_SIZE(cpu_post_load_table);
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int cpu_post_test_load (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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for (i = 0; i < cpu_post_load_size && ret == 0; i++)
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{
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struct cpu_post_load_s *test = cpu_post_load_table + i;
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uchar data[16] =
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
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ulong base0 = (ulong) (data + 8);
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ulong base = base0;
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ulong value;
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if (test->index)
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{
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ulong code[] =
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{
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ASM_12(test->cmd, 5, 3, 4),
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ASM_BLR,
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};
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cpu_post_exec_22w (code, &base, test->offset, &value);
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}
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else
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{
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ulong code[] =
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{
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ASM_11I(test->cmd, 4, 3, test->offset),
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ASM_BLR,
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};
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cpu_post_exec_21w (code, &base, &value);
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}
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if (ret == 0)
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{
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if (test->update)
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ret = base == base0 + test->offset ? 0 : -1;
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else
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ret = base == base0 ? 0 : -1;
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}
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if (ret == 0)
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{
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switch (test->width)
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{
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case 1:
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ret = *(uchar *)(base0 + test->offset) == value ?
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0 : -1;
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break;
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case 2:
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ret = *(ushort *)(base0 + test->offset) == value ?
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0 : -1;
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break;
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case 3:
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ret = *(short *)(base0 + test->offset) == value ?
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0 : -1;
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break;
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case 4:
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ret = *(ulong *)(base0 + test->offset) == value ?
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0 : -1;
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break;
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}
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}
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if (ret != 0)
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{
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post_log ("Error at load test %d !\n", i);
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}
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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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