+++ /dev/null
-/*
- * (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);
-}
-
-/* ------------------------------------------------------------------------- */
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