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, 185 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/74xx_7xx/speed.c b/arch/powerpc/cpu/74xx_7xx/speed.c
new file mode 100644
index 0000000000..f2fdcd5dc3
--- /dev/null
+++ b/arch/powerpc/cpu/74xx_7xx/speed.c
@@ -0,0 +1,185 @@
+/*
+ * (C) Copyright 2000-2002
+ * 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>
+#include <74xx_7xx.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_AMIGAONEG3SE
+#include "../board/MAI/AmigaOneG3SE/via686.h"
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern unsigned long get_board_bus_clk (void);
+
+static const int hid1_multipliers_x_10[] = {
+	25,	/* 0000 - 2.5x */
+	75,	/* 0001 - 7.5x */
+	70,	/* 0010 - 7x */
+	10,	/* 0011 - bypass */
+	20,	/* 0100 - 2x */
+	65,	/* 0101 - 6.5x */
+	100,	/* 0110 - 10x */
+	45,	/* 0111 - 4.5x */
+	30,	/* 1000 - 3x */
+	55,	/* 1001 - 5.5x */
+	40,	/* 1010 - 4x */
+	50,	/* 1011 - 5x */
+	80,	/* 1100 - 8x */
+	60,	/* 1101 - 6x */
+	35,	/* 1110 - 3.5x */
+	0	/* 1111 - off */
+};
+
+/* PLL_CFG[0:4] table for cpu 7448/7447A/7455/7457 */
+static const int hid1_74xx_multipliers_x_10[] = {
+	115,	/* 00000 - 11.5x  */
+	170,	/* 00001 - 17x    */
+	75,	/* 00010 -  7.5x  */
+	150,	/* 00011 - 15x    */
+	70,	/* 00100 -  7x    */
+	180,	/* 00101 - 18x    */
+	10,	/* 00110 - bypass */
+	200,	/* 00111 - 20x    */
+	20,	/* 01000 -  2x    */
+	210,	/* 01001 - 21x    */
+	65,	/* 01010 -  6.5x  */
+	130,	/* 01011 - 13x    */
+	85,	/* 01100 -  8.5x  */
+	240,	/* 01101 - 24x    */
+	95,	/* 01110 -  9.5x  */
+	90,	/* 01111 -  9x    */
+	30,	/* 10000 -  3x    */
+	105,	/* 10001 - 10.5x  */
+	55,	/* 10010 -  5.5x  */
+	110,	/* 10011 - 11x    */
+	40,	/* 10100 -  4x    */
+	100,	/* 10101 - 10x    */
+	50,	/* 10110 -  5x    */
+	120,	/* 10111 - 12x    */
+	80,	/* 11000 -  8x    */
+	140,	/* 11001 - 14x    */
+	60,	/* 11010 -  6x    */
+	160,	/* 11011 - 16x    */
+	135,	/* 11100 - 13.5x  */
+	280,	/* 11101 - 28x    */
+	0,	/* 11110 - off    */
+	125	/* 11111 - 12.5x  */
+};
+
+static const int hid1_fx_multipliers_x_10[] = {
+	00,	/* 0000 - off */
+	00,	/* 0001 - off */
+	10,	/* 0010 - bypass */
+	10,	/* 0011 - bypass */
+	20,	/* 0100 - 2x */
+	25,	/* 0101 - 2.5x */
+	30,	/* 0110 - 3x */
+	35,	/* 0111 - 3.5x */
+	40,	/* 1000 - 4x */
+	45,	/* 1001 - 4.5x */
+	50,	/* 1010 - 5x */
+	55,	/* 1011 - 5.5x */
+	60,	/* 1100 - 6x */
+	65,	/* 1101 - 6.5x */
+	70,	/* 1110 - 7x */
+	75,	/* 1111 - 7.5 */
+	80,	/* 10000 - 8x */
+	85,	/* 10001 - 8.5x */
+	90,	/* 10010 - 9x */
+	95,	/* 10011 - 9.5x */
+	100,	/* 10100 - 10x */
+	110,	/* 10101 - 11x */
+	120,	/* 10110 - 12x */
+};
+
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Measure CPU clock speed (core clock GCLK1, GCLK2)
+ *
+ * (Approx. GCLK frequency in Hz)
+ */
+
+int get_clocks (void)
+{
+	ulong clock = 0;
+
+#ifdef CONFIG_SYS_BUS_CLK
+	gd->bus_clk = CONFIG_SYS_BUS_CLK;	/* bus clock is a fixed frequency */
+#else
+	gd->bus_clk = get_board_bus_clk ();	/* bus clock is configurable */
+#endif
+
+	/* calculate the clock frequency based upon the CPU type */
+	switch (get_cpu_type()) {
+	case CPU_7447A:
+	case CPU_7448:
+	case CPU_7455:
+	case CPU_7457:
+		/*
+		 * Make sure division is done before multiplication to prevent 32-bit
+		 * arithmetic overflows which will cause a negative number
+		 */
+		clock = (gd->bus_clk / 10) *
+			hid1_74xx_multipliers_x_10[(get_hid1 () >> 12) & 0x1F];
+		break;
+
+	case CPU_750GX:
+	case CPU_750FX:
+		clock = (gd->bus_clk / 10) *
+			hid1_fx_multipliers_x_10[get_hid1 () >> 27];
+		break;
+
+	case CPU_7450:
+	case CPU_740:
+	case CPU_740P:
+	case CPU_745:
+	case CPU_750CX:
+	case CPU_750:
+	case CPU_750P:
+	case CPU_755:
+	case CPU_7400:
+	case CPU_7410:
+		/*
+		 * Make sure division is done before multiplication to prevent 32-bit
+		 * arithmetic overflows which will cause a negative number
+		 */
+		clock = (gd->bus_clk / 10) *
+			hid1_multipliers_x_10[get_hid1 () >> 28];
+		break;
+
+	case CPU_UNKNOWN:
+	       printf ("get_gclk_freq(): unknown CPU type\n");
+	       clock = 0;
+	       return (1);
+	}
+
+	gd->cpu_clk = clock;
+
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */