ppc: rename arch/ppc/ to arch/powerpc/

In old days, Linux supported PowerPC with two arch directories,
arch/ppc/ and arch/ppc64/.

Linux commit 564ee7a5668e ("[PATCH] powerpc: Move arch/ppc*/kernel/vecemu.c
to arch/powerpc") started the migration to arch/powerpc/, and
commit 917f0af9e5a9 ("powerpc: Remove arch/ppc and include/asm-ppc")
finished it.

This commit aligns the directory name with the current Linux.

I did 'git mv arch/ppc/ arch/powerpc/', and fixed up some hard-coded
arch/ppc paths.

Barebox has stuck to arch/ppc/ for a long time. To keep the backward
compatibility, I added the following to the top Makefile.

  # Support ARCH=ppc for backward compatibility
  ifeq ($(ARCH),ppc)
         SRCARCH := powerpc
  endif

Both ARCH=ppc and ARCH=powerpc work in the same way.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 102 insertions, 0 deletions

diff --git a/arch/powerpc/mach-mpc85xx/cpu.c b/arch/powerpc/mach-mpc85xx/cpu.c
new file mode 100644
index 0000000000..42464e810c
--- /dev/null
+++ b/arch/powerpc/mach-mpc85xx/cpu.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2012 GE Intelligent Platforms, Inc
+ * Copyright 2004,2007-2011 Freescale Semiconductor, Inc.
+ * (C) Copyright 2002, 2003 Motorola Inc.
+ * Xianghua Xiao (X.Xiao@motorola.com)
+ *
+ * (C) Copyright 2000
+ * 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.
+ *
+ */
+
+#include <config.h>
+#include <common.h>
+#include <memory.h>
+#include <init.h>
+#include <restart.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm-generic/memory_layout.h>
+#include <mach/mmu.h>
+#include <mach/immap_85xx.h>
+
+static void __noreturn mpc85xx_restart_soc(struct restart_handler *rst)
+{
+	void __iomem *regs = (void __iomem *)MPC85xx_GUTS_ADDR;
+
+	/* Everything after the first generation of PQ3 parts has RSTCR */
+	out_be32(regs + MPC85xx_GUTS_RSTCR_OFFSET, 0x2);  /* HRESET_REQ */
+	udelay(100);
+
+	hang();
+}
+
+static int restart_register_feature(void)
+{
+	restart_handler_register_fn(mpc85xx_restart_soc);
+
+	return 0;
+}
+coredevice_initcall(restart_register_feature);
+
+long int initdram(int board_type)
+{
+	phys_size_t dram_size = 0;
+
+	if (IS_ENABLED(CONFIG_DDR_SPD))
+		dram_size = fsl_ddr_sdram();
+	else
+		dram_size = fixed_sdram();
+	dram_size = e500_setup_ddr_tlbs(dram_size / 0x100000);
+	dram_size *= 0x100000;
+
+	return dram_size;
+}
+
+/*
+ * Return the memory size based on the configuration registers.
+ */
+phys_size_t fsl_get_effective_memsize(void)
+{
+	void __iomem *regs = (void __iomem *)(MPC85xx_DDR_ADDR);
+	phys_size_t sdram_size;
+	uint san , ean;
+	uint reg;
+	int ix;
+
+	sdram_size = 0;
+
+	for (ix = 0; ix < CFG_CHIP_SELECTS_PER_CTRL; ix++) {
+		if (in_be32(regs + DDR_OFF(CS0_CONFIG) + (ix * 4)) &
+				SDRAM_CFG_MEM_EN) {
+			reg = in_be32(regs + DDR_OFF(CS0_BNDS) + (ix * 8));
+			/* start address */
+			san = (reg & 0x0fff00000) >>  16;
+			/* end address   */
+			ean = (reg & 0x00000fff);
+			sdram_size += ((ean - san + 1) << 24);
+		}
+	}
+
+	return sdram_size;
+}
+
+static int fsl_reserve_region(void)
+{
+	request_sdram_region("stack", _text_base - STACK_SIZE,
+			STACK_SIZE);
+	return 0;
+}
+coredevice_initcall(fsl_reserve_region);