Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 173 insertions, 0 deletions

diff --git a/post/lib_powerpc/twox.c b/post/lib_powerpc/twox.c
new file mode 100644
index 0000000..d6714f9
--- /dev/null
+++ b/post/lib_powerpc/twox.c
@@ -0,0 +1,173 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#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 =
+    sizeof (cpu_post_twox_table) / sizeof (struct cpu_post_twox_s);
+
+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