/* * (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 <mpc8260.h> #include <asm/processor.h> #if defined(CONFIG_BOARD_GET_CPU_CLK_F) extern unsigned long board_get_cpu_clk_f (void); #endif DECLARE_GLOBAL_DATA_PTR; /* ------------------------------------------------------------------------- */ /* Bus-to-Core Multiplier */ #define _1x 2 #define _1_5x 3 #define _2x 4 #define _2_5x 5 #define _3x 6 #define _3_5x 7 #define _4x 8 #define _4_5x 9 #define _5x 10 #define _5_5x 11 #define _6x 12 #define _6_5x 13 #define _7x 14 #define _7_5x 15 #define _8x 16 #define _byp -1 #define _off -2 #define _unk -3 typedef struct { int b2c_mult; int vco_div; char *freq_60x; char *freq_core; } corecnf_t; /* * this table based on "Errata to MPC8260 PowerQUICC II User's Manual", * Rev. 1, 8/2000, page 10. */ corecnf_t corecnf_tab[] = { { _1_5x, 4, " 33-100", " 33-100" }, /* 0x00 */ { _1x, 4, " 50-150", " 50-150" }, /* 0x01 */ { _1x, 8, " 25-75 ", " 25-75 " }, /* 0x02 */ { _byp, -1, " ?-? ", " ?-? " }, /* 0x03 */ { _2x, 2, " 50-150", "100-300" }, /* 0x04 */ { _2x, 4, " 25-75 ", " 50-150" }, /* 0x05 */ { _2_5x, 2, " 40-120", "100-240" }, /* 0x06 */ { _4_5x, 2, " 22-65 ", "100-300" }, /* 0x07 */ { _3x, 2, " 33-100", "100-300" }, /* 0x08 */ { _5_5x, 2, " 18-55 ", "100-300" }, /* 0x09 */ { _4x, 2, " 25-75 ", "100-300" }, /* 0x0A */ { _5x, 2, " 20-60 ", "100-300" }, /* 0x0B */ { _1_5x, 8, " 16-50 ", " 16-50 " }, /* 0x0C */ { _6x, 2, " 16-50 ", "100-300" }, /* 0x0D */ { _3_5x, 2, " 30-85 ", "100-300" }, /* 0x0E */ { _off, -1, " ?-? ", " ?-? " }, /* 0x0F */ { _3x, 4, " 16-50 ", " 50-150" }, /* 0x10 */ { _2_5x, 4, " 20-60 ", " 50-120" }, /* 0x11 */ { _6_5x, 2, " 15-46 ", "100-300" }, /* 0x12 */ { _byp, -1, " ?-? ", " ?-? " }, /* 0x13 */ { _7x, 2, " 14-43 ", "100-300" }, /* 0x14 */ { _2x, 4, " 25-75 ", " 50-150" }, /* 0x15 */ { _7_5x, 2, " 13-40 ", "100-300" }, /* 0x16 */ { _4_5x, 2, " 22-65 ", "100-300" }, /* 0x17 */ { _unk, -1, " ?-? ", " ?-? " }, /* 0x18 */ { _5_5x, 2, " 18-55 ", "100-300" }, /* 0x19 */ { _4x, 2, " 25-75 ", "100-300" }, /* 0x1A */ { _5x, 2, " 20-60 ", "100-300" }, /* 0x1B */ { _8x, 2, " 12-38 ", "100-300" }, /* 0x1C */ { _6x, 2, " 16-50 ", "100-300" }, /* 0x1D */ { _3_5x, 2, " 30-85 ", "100-300" }, /* 0x1E */ { _off, -1, " ?-? ", " ?-? " }, /* 0x1F */ }; /* ------------------------------------------------------------------------- */ /* * */ int get_clocks (void) { volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; ulong clkin; ulong sccr, dfbrg; ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf; corecnf_t *cp; #if !defined(CONFIG_8260_CLKIN) #error clock measuring not implemented yet - define CONFIG_8260_CLKIN #else #if defined(CONFIG_BOARD_GET_CPU_CLK_F) clkin = board_get_cpu_clk_f (); #else clkin = CONFIG_8260_CLKIN; #endif #endif sccr = immap->im_clkrst.car_sccr; dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; scmr = immap->im_clkrst.car_scmr; corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT; cp = &corecnf_tab[corecnf]; busdf = (scmr & SCMR_BUSDF_MSK) >> SCMR_BUSDF_SHIFT; cpmdf = (scmr & SCMR_CPMDF_MSK) >> SCMR_CPMDF_SHIFT; /* HiP7, HiP7 Rev01, HiP7 RevA */ if ((get_pvr () == PVR_8260_HIP7) || (get_pvr () == PVR_8260_HIP7R1) || (get_pvr () == PVR_8260_HIP7RA)) { pllmf = (scmr & SCMR_PLLMF_MSKH7) >> SCMR_PLLMF_SHIFT; gd->vco_out = clkin * (pllmf + 1); } else { /* HiP3, HiP4 */ pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT; plldf = (scmr & SCMR_PLLDF) ? 1 : 0; gd->vco_out = (clkin * 2 * (pllmf + 1)) / (plldf + 1); } #if 0 if (gd->vco_out / (busdf + 1) != clkin) { /* aaarrrggghhh!!! */ return (1); } #endif gd->cpm_clk = gd->vco_out / 2; gd->bus_clk = clkin; gd->scc_clk = gd->vco_out / 4; gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1))); if (cp->b2c_mult > 0) { gd->cpu_clk = (clkin * cp->b2c_mult) / 2; } else { gd->cpu_clk = clkin; } #ifdef CONFIG_PCI gd->pci_clk = clkin; if (sccr & SCCR_PCI_MODE) { uint pci_div; uint pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT; if (sccr & SCCR_PCI_MODCK) { pci_div = 2; if (pcidf == 9) { pci_div *= 5; } else if (pcidf == 0xB) { pci_div *= 6; } else { pci_div *= (pcidf + 1); } } else { pci_div = pcidf + 1; } gd->pci_clk = (gd->cpm_clk * 2) / pci_div; } #endif return (0); } int prt_8260_clks (void) { volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; ulong sccr, dfbrg; ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf, pcidf; corecnf_t *cp; sccr = immap->im_clkrst.car_sccr; dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; scmr = immap->im_clkrst.car_scmr; corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT; busdf = (scmr & SCMR_BUSDF_MSK) >> SCMR_BUSDF_SHIFT; cpmdf = (scmr & SCMR_CPMDF_MSK) >> SCMR_CPMDF_SHIFT; plldf = (scmr & SCMR_PLLDF) ? 1 : 0; pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT; pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT; cp = &corecnf_tab[corecnf]; puts (CPU_ID_STR " Clock Configuration\n - Bus-to-Core Mult "); switch (cp->b2c_mult) { case _byp: puts ("BYPASS"); break; case _off: puts ("OFF"); break; case _unk: puts ("UNKNOWN"); break; default: printf ("%d%sx", cp->b2c_mult / 2, (cp->b2c_mult % 2) ? ".5" : ""); break; } printf (", VCO Div %d, 60x Bus Freq %s, Core Freq %s\n", cp->vco_div, cp->freq_60x, cp->freq_core); printf (" - dfbrg %ld, corecnf 0x%02lx, busdf %ld, cpmdf %ld, " "plldf %ld, pllmf %ld, pcidf %ld\n", dfbrg, corecnf, busdf, cpmdf, plldf, pllmf, pcidf); printf (" - vco_out %10ld, scc_clk %10ld, brg_clk %10ld\n", gd->vco_out, gd->scc_clk, gd->brg_clk); printf (" - cpu_clk %10ld, cpm_clk %10ld, bus_clk %10ld\n", gd->cpu_clk, gd->cpm_clk, gd->bus_clk); #ifdef CONFIG_PCI printf (" - pci_clk %10ld\n", gd->pci_clk); #endif putc ('\n'); return (0); }