Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / post / lib_powerpc / twox.c

diff --git a/qemu/roms/u-boot/post/lib_powerpc/twox.c b/qemu/roms/u-boot/post/lib_powerpc/twox.c
new file mode 100644 (file)
index 0000000..9549dbb
--- /dev/null
+++ b/qemu/roms/u-boot/post/lib_powerpc/twox.c
@@ -0,0 +1,156 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+
+/*
+ * CPU test
+ * Binary instructions         instr rA,rS
+ *
+ * Logic instructions:         cntlzw
+ * Arithmetic instructions:    extsb, extsh
+
+ * 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.
+ */
+
+#include <post.h>
+#include "cpu_asm.h"
+
+#if CONFIG_POST & CONFIG_SYS_POST_CPU
+
+extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op1);
+extern ulong cpu_post_makecr (long v);
+
+static struct cpu_post_twox_s
+{
+    ulong cmd;
+    ulong op;
+    ulong res;
+} cpu_post_twox_table[] =
+{
+    {
+       OP_EXTSB,
+       3,
+       3
+    },
+    {
+       OP_EXTSB,
+       0xff,
+       -1
+    },
+    {
+       OP_EXTSH,
+       3,
+       3
+    },
+    {
+       OP_EXTSH,
+       0xff,
+       0xff
+    },
+    {
+       OP_EXTSH,
+       0xffff,
+       -1
+    },
+    {
+       OP_CNTLZW,
+       0x000fffff,
+       12
+    },
+};
+static unsigned int cpu_post_twox_size = ARRAY_SIZE(cpu_post_twox_table);
+
+int cpu_post_test_twox (void)
+{
+    int ret = 0;
+    unsigned int i, reg;
+    int flag = disable_interrupts();
+
+    for (i = 0; i < cpu_post_twox_size && ret == 0; i++)
+    {
+       struct cpu_post_twox_s *test = cpu_post_twox_table + i;
+
+       for (reg = 0; reg < 32 && ret == 0; reg++)
+       {
+           unsigned int reg0 = (reg + 0) % 32;
+           unsigned int reg1 = (reg + 1) % 32;
+           unsigned int stk = reg < 16 ? 31 : 15;
+           unsigned long code[] =
+           {
+               ASM_STW(stk, 1, -4),
+               ASM_ADDI(stk, 1, -16),
+               ASM_STW(3, stk, 8),
+               ASM_STW(reg0, stk, 4),
+               ASM_STW(reg1, stk, 0),
+               ASM_LWZ(reg0, stk, 8),
+               ASM_11X(test->cmd, reg1, reg0),
+               ASM_STW(reg1, stk, 8),
+               ASM_LWZ(reg1, stk, 0),
+               ASM_LWZ(reg0, stk, 4),
+               ASM_LWZ(3, stk, 8),
+               ASM_ADDI(1, stk, 16),
+               ASM_LWZ(stk, 1, -4),
+               ASM_BLR,
+           };
+           unsigned long codecr[] =
+           {
+               ASM_STW(stk, 1, -4),
+               ASM_ADDI(stk, 1, -16),
+               ASM_STW(3, stk, 8),
+               ASM_STW(reg0, stk, 4),
+               ASM_STW(reg1, stk, 0),
+               ASM_LWZ(reg0, stk, 8),
+               ASM_11X(test->cmd, reg1, reg0) | BIT_C,
+               ASM_STW(reg1, stk, 8),
+               ASM_LWZ(reg1, stk, 0),
+               ASM_LWZ(reg0, stk, 4),
+               ASM_LWZ(3, stk, 8),
+               ASM_ADDI(1, stk, 16),
+               ASM_LWZ(stk, 1, -4),
+               ASM_BLR,
+           };
+           ulong res;
+           ulong cr;
+
+           if (ret == 0)
+           {
+               cr = 0;
+               cpu_post_exec_21 (code, & cr, & res, test->op);
+
+               ret = res == test->res && cr == 0 ? 0 : -1;
+
+               if (ret != 0)
+               {
+                   post_log ("Error at twox test %d !\n", i);
+               }
+           }
+
+           if (ret == 0)
+           {
+               cpu_post_exec_21 (codecr, & cr, & res, test->op);
+
+               ret = res == test->res &&
+                     (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
+
+               if (ret != 0)
+               {
+                   post_log ("Error at twox test %d !\n", i);
+               }
+           }
+       }
+    }
+
+    if (flag)
+       enable_interrupts();
+
+    return ret;
+}
+
+#endif