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, 198 insertions, 0 deletions

diff --git a/post/lib_powerpc/b.c b/post/lib_powerpc/b.c
new file mode 100644
index 0000000000..492fba4c53
--- /dev/null
+++ b/post/lib_powerpc/b.c
@@ -0,0 +1,198 @@
+/*
+ * (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
+ * Branch instructions:		b, bl, bc
+ *
+ * The first 2 instructions (b, bl) are verified by jumping
+ * to a fixed address and checking whether control was transfered
+ * to that very point. For the bl instruction the value of the
+ * link register is checked as well (using mfspr).
+ * To verify the bc instruction various combinations of the BI/BO
+ * fields, the CTR and the condition register values are
+ * checked. The list of such combinations is pre-built and
+ * linked in U-Boot at build time.
+ */
+
+#include <post.h>
+#include "cpu_asm.h"
+
+#if CONFIG_POST & CONFIG_SYS_POST_CPU
+
+extern void cpu_post_exec_11 (ulong *code, ulong *res, ulong op1);
+extern void cpu_post_exec_31 (ulong *code, ulong *ctr, ulong *lr, ulong *jump,
+    ulong cr);
+
+static int cpu_post_test_bc (ulong cmd, ulong bo, ulong bi,
+    int pjump, int decr, int link, ulong pctr, ulong cr)
+{
+    int ret = 0;
+    ulong lr = 0;
+    ulong ctr = pctr;
+    ulong jump;
+
+    unsigned long code[] =
+    {
+	ASM_MTCR(6),
+	ASM_MFLR(6),
+	ASM_MTCTR(3),
+	ASM_MTLR(4),
+	ASM_LI(5, 1),
+	ASM_3O(cmd, bo, bi, 8),
+	ASM_LI(5, 0),
+	ASM_MFCTR(3),
+	ASM_MFLR(4),
+	ASM_MTLR(6),
+	ASM_BLR,
+    };
+
+    cpu_post_exec_31 (code, &ctr, &lr, &jump, cr);
+
+    if (ret == 0)
+	ret = pjump == jump ? 0 : -1;
+    if (ret == 0)
+    {
+	if (decr)
+	    ret = pctr == ctr + 1 ? 0 : -1;
+	else
+	    ret = pctr == ctr ? 0 : -1;
+    }
+    if (ret == 0)
+    {
+	if (link)
+	    ret = lr == (ulong) code + 24 ? 0 : -1;
+	else
+	    ret = lr == 0 ? 0 : -1;
+    }
+
+    return ret;
+}
+
+int cpu_post_test_b (void)
+{
+    int ret = 0;
+    unsigned int i;
+    int flag = disable_interrupts();
+
+    if (ret == 0)
+    {
+	ulong code[] =
+	{
+	   ASM_MFLR(4),
+	   ASM_MTLR(3),
+	   ASM_B(4),
+	   ASM_MFLR(3),
+	   ASM_MTLR(4),
+	   ASM_BLR,
+	};
+	ulong res;
+
+	cpu_post_exec_11 (code, &res, 0);
+
+	ret = res == 0 ? 0 : -1;
+
+	if (ret != 0)
+	{
+	    post_log ("Error at b1 test !\n");
+	}
+    }
+
+    if (ret == 0)
+    {
+	ulong code[] =
+	{
+	   ASM_MFLR(4),
+	   ASM_MTLR(3),
+	   ASM_BL(4),
+	   ASM_MFLR(3),
+	   ASM_MTLR(4),
+	   ASM_BLR,
+	};
+	ulong res;
+
+	cpu_post_exec_11 (code, &res, 0);
+
+	ret = res == (ulong)code + 12 ? 0 : -1;
+
+	if (ret != 0)
+	{
+	    post_log ("Error at b2 test !\n");
+	}
+    }
+
+    if (ret == 0)
+    {
+	ulong cc, cd;
+	int cond;
+	ulong ctr;
+	int link;
+
+	i = 0;
+
+	for (cc = 0; cc < 4 && ret == 0; cc++)
+	{
+	    for (cd = 0; cd < 4 && ret == 0; cd++)
+	    {
+		for (link = 0; link <= 1 && ret == 0; link++)
+		{
+		    for (cond = 0; cond <= 1 && ret == 0; cond++)
+		    {
+			for (ctr = 1; ctr <= 2 && ret == 0; ctr++)
+			{
+			    int decr = cd < 2;
+			    int cr = cond ? 0x80000000 : 0x00000000;
+			    int jumpc = cc >= 2 ||
+					(cc == 0 && !cond) ||
+					(cc == 1 && cond);
+			    int jumpd = cd >= 2 ||
+					(cd == 0 && ctr != 1) ||
+					(cd == 1 && ctr == 1);
+			    int jump = jumpc && jumpd;
+
+			    ret = cpu_post_test_bc (link ? OP_BCL : OP_BC,
+				(cc << 3) + (cd << 1), 0, jump, decr, link,
+				ctr, cr);
+
+			    if (ret != 0)
+			    {
+				post_log ("Error at b3 test %d !\n", i);
+			    }
+
+			    i++;
+			}
+		    }
+		}
+	    }
+	}
+    }
+
+    if (flag)
+	enable_interrupts();
+
+    return ret;
+}
+
+#endif