wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2000-2002 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <mpc8260.h> |
| 26 | #include <asm/processor.h> |
| 27 | |
Heiko Schocher | 3ec4366 | 2006-12-21 17:17:02 +0100 | [diff] [blame] | 28 | #if defined(CONFIG_BOARD_GET_CPU_CLK_F) |
| 29 | extern unsigned long board_get_cpu_clk_f (void); |
| 30 | #endif |
| 31 | |
Wolfgang Denk | 6405a15 | 2006-03-31 18:32:53 +0200 | [diff] [blame] | 32 | DECLARE_GLOBAL_DATA_PTR; |
| 33 | |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 34 | /* ------------------------------------------------------------------------- */ |
| 35 | |
| 36 | /* Bus-to-Core Multiplier */ |
| 37 | #define _1x 2 |
| 38 | #define _1_5x 3 |
| 39 | #define _2x 4 |
| 40 | #define _2_5x 5 |
| 41 | #define _3x 6 |
| 42 | #define _3_5x 7 |
| 43 | #define _4x 8 |
| 44 | #define _4_5x 9 |
| 45 | #define _5x 10 |
| 46 | #define _5_5x 11 |
| 47 | #define _6x 12 |
| 48 | #define _6_5x 13 |
| 49 | #define _7x 14 |
| 50 | #define _7_5x 15 |
| 51 | #define _8x 16 |
| 52 | #define _byp -1 |
| 53 | #define _off -2 |
| 54 | #define _unk -3 |
| 55 | |
| 56 | typedef struct { |
| 57 | int b2c_mult; |
| 58 | int vco_div; |
| 59 | char *freq_60x; |
| 60 | char *freq_core; |
| 61 | } corecnf_t; |
| 62 | |
| 63 | /* |
| 64 | * this table based on "Errata to MPC8260 PowerQUICC II User's Manual", |
| 65 | * Rev. 1, 8/2000, page 10. |
| 66 | */ |
| 67 | corecnf_t corecnf_tab[] = { |
| 68 | { _1_5x, 4, " 33-100", " 33-100" }, /* 0x00 */ |
| 69 | { _1x, 4, " 50-150", " 50-150" }, /* 0x01 */ |
| 70 | { _1x, 8, " 25-75 ", " 25-75 " }, /* 0x02 */ |
| 71 | { _byp, -1, " ?-? ", " ?-? " }, /* 0x03 */ |
| 72 | { _2x, 2, " 50-150", "100-300" }, /* 0x04 */ |
| 73 | { _2x, 4, " 25-75 ", " 50-150" }, /* 0x05 */ |
| 74 | { _2_5x, 2, " 40-120", "100-240" }, /* 0x06 */ |
| 75 | { _4_5x, 2, " 22-65 ", "100-300" }, /* 0x07 */ |
| 76 | { _3x, 2, " 33-100", "100-300" }, /* 0x08 */ |
| 77 | { _5_5x, 2, " 18-55 ", "100-300" }, /* 0x09 */ |
| 78 | { _4x, 2, " 25-75 ", "100-300" }, /* 0x0A */ |
| 79 | { _5x, 2, " 20-60 ", "100-300" }, /* 0x0B */ |
| 80 | { _1_5x, 8, " 16-50 ", " 16-50 " }, /* 0x0C */ |
| 81 | { _6x, 2, " 16-50 ", "100-300" }, /* 0x0D */ |
| 82 | { _3_5x, 2, " 30-85 ", "100-300" }, /* 0x0E */ |
| 83 | { _off, -1, " ?-? ", " ?-? " }, /* 0x0F */ |
| 84 | { _3x, 4, " 16-50 ", " 50-150" }, /* 0x10 */ |
| 85 | { _2_5x, 4, " 20-60 ", " 50-120" }, /* 0x11 */ |
| 86 | { _6_5x, 2, " 15-46 ", "100-300" }, /* 0x12 */ |
| 87 | { _byp, -1, " ?-? ", " ?-? " }, /* 0x13 */ |
| 88 | { _7x, 2, " 14-43 ", "100-300" }, /* 0x14 */ |
| 89 | { _2x, 4, " 25-75 ", " 50-150" }, /* 0x15 */ |
| 90 | { _7_5x, 2, " 13-40 ", "100-300" }, /* 0x16 */ |
| 91 | { _4_5x, 2, " 22-65 ", "100-300" }, /* 0x17 */ |
| 92 | { _unk, -1, " ?-? ", " ?-? " }, /* 0x18 */ |
| 93 | { _5_5x, 2, " 18-55 ", "100-300" }, /* 0x19 */ |
| 94 | { _4x, 2, " 25-75 ", "100-300" }, /* 0x1A */ |
| 95 | { _5x, 2, " 20-60 ", "100-300" }, /* 0x1B */ |
| 96 | { _8x, 2, " 12-38 ", "100-300" }, /* 0x1C */ |
| 97 | { _6x, 2, " 16-50 ", "100-300" }, /* 0x1D */ |
| 98 | { _3_5x, 2, " 30-85 ", "100-300" }, /* 0x1E */ |
| 99 | { _off, -1, " ?-? ", " ?-? " }, /* 0x1F */ |
| 100 | }; |
| 101 | |
| 102 | /* ------------------------------------------------------------------------- */ |
| 103 | |
| 104 | /* |
| 105 | * |
| 106 | */ |
| 107 | |
| 108 | int get_clocks (void) |
| 109 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 110 | volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 111 | ulong clkin; |
| 112 | ulong sccr, dfbrg; |
Wolfgang Denk | 80c4801 | 2011-11-04 15:55:52 +0000 | [diff] [blame] | 113 | ulong scmr, corecnf, plldf, pllmf; |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 114 | corecnf_t *cp; |
| 115 | |
| 116 | #if !defined(CONFIG_8260_CLKIN) |
| 117 | #error clock measuring not implemented yet - define CONFIG_8260_CLKIN |
| 118 | #else |
Heiko Schocher | 3ec4366 | 2006-12-21 17:17:02 +0100 | [diff] [blame] | 119 | #if defined(CONFIG_BOARD_GET_CPU_CLK_F) |
| 120 | clkin = board_get_cpu_clk_f (); |
| 121 | #else |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 122 | clkin = CONFIG_8260_CLKIN; |
| 123 | #endif |
Heiko Schocher | 3ec4366 | 2006-12-21 17:17:02 +0100 | [diff] [blame] | 124 | #endif |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 125 | |
| 126 | sccr = immap->im_clkrst.car_sccr; |
| 127 | dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; |
| 128 | |
| 129 | scmr = immap->im_clkrst.car_scmr; |
| 130 | corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT; |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 131 | cp = &corecnf_tab[corecnf]; |
| 132 | |
wdenk | 391b574 | 2004-10-10 23:27:33 +0000 | [diff] [blame] | 133 | /* HiP7, HiP7 Rev01, HiP7 RevA */ |
| 134 | if ((get_pvr () == PVR_8260_HIP7) || |
| 135 | (get_pvr () == PVR_8260_HIP7R1) || |
| 136 | (get_pvr () == PVR_8260_HIP7RA)) { |
wdenk | dccbda0 | 2003-07-14 22:13:32 +0000 | [diff] [blame] | 137 | pllmf = (scmr & SCMR_PLLMF_MSKH7) >> SCMR_PLLMF_SHIFT; |
| 138 | gd->vco_out = clkin * (pllmf + 1); |
| 139 | } else { /* HiP3, HiP4 */ |
| 140 | pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT; |
| 141 | plldf = (scmr & SCMR_PLLDF) ? 1 : 0; |
| 142 | gd->vco_out = (clkin * 2 * (pllmf + 1)) / (plldf + 1); |
| 143 | } |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 144 | |
| 145 | gd->cpm_clk = gd->vco_out / 2; |
| 146 | gd->bus_clk = clkin; |
| 147 | gd->scc_clk = gd->vco_out / 4; |
| 148 | gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1))); |
| 149 | |
| 150 | if (cp->b2c_mult > 0) { |
| 151 | gd->cpu_clk = (clkin * cp->b2c_mult) / 2; |
| 152 | } else { |
| 153 | gd->cpu_clk = clkin; |
| 154 | } |
| 155 | |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 156 | #ifdef CONFIG_PCI |
| 157 | gd->pci_clk = clkin; |
| 158 | |
| 159 | if (sccr & SCCR_PCI_MODE) { |
| 160 | uint pci_div; |
| 161 | uint pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT; |
| 162 | |
| 163 | if (sccr & SCCR_PCI_MODCK) { |
| 164 | pci_div = 2; |
| 165 | if (pcidf == 9) { |
| 166 | pci_div *= 5; |
| 167 | } else if (pcidf == 0xB) { |
| 168 | pci_div *= 6; |
| 169 | } else { |
| 170 | pci_div *= (pcidf + 1); |
| 171 | } |
| 172 | } else { |
| 173 | pci_div = pcidf + 1; |
| 174 | } |
| 175 | |
| 176 | gd->pci_clk = (gd->cpm_clk * 2) / pci_div; |
| 177 | } |
| 178 | #endif |
| 179 | |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 180 | return (0); |
| 181 | } |
| 182 | |
| 183 | int prt_8260_clks (void) |
| 184 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 185 | volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 186 | ulong sccr, dfbrg; |
Wolfgang Denk | c8fe36c | 2006-03-12 16:14:29 +0100 | [diff] [blame] | 187 | ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf, pcidf; |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 188 | corecnf_t *cp; |
| 189 | |
| 190 | sccr = immap->im_clkrst.car_sccr; |
| 191 | dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; |
| 192 | |
| 193 | scmr = immap->im_clkrst.car_scmr; |
| 194 | corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT; |
| 195 | busdf = (scmr & SCMR_BUSDF_MSK) >> SCMR_BUSDF_SHIFT; |
| 196 | cpmdf = (scmr & SCMR_CPMDF_MSK) >> SCMR_CPMDF_SHIFT; |
| 197 | plldf = (scmr & SCMR_PLLDF) ? 1 : 0; |
| 198 | pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT; |
Wolfgang Denk | c8fe36c | 2006-03-12 16:14:29 +0100 | [diff] [blame] | 199 | pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT; |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 200 | |
| 201 | cp = &corecnf_tab[corecnf]; |
| 202 | |
wdenk | 42c0547 | 2004-03-23 22:14:11 +0000 | [diff] [blame] | 203 | puts (CPU_ID_STR " Clock Configuration\n - Bus-to-Core Mult "); |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 204 | |
| 205 | switch (cp->b2c_mult) { |
| 206 | case _byp: |
wdenk | 42c0547 | 2004-03-23 22:14:11 +0000 | [diff] [blame] | 207 | puts ("BYPASS"); |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 208 | break; |
| 209 | |
| 210 | case _off: |
wdenk | 42c0547 | 2004-03-23 22:14:11 +0000 | [diff] [blame] | 211 | puts ("OFF"); |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 212 | break; |
| 213 | |
| 214 | case _unk: |
wdenk | 42c0547 | 2004-03-23 22:14:11 +0000 | [diff] [blame] | 215 | puts ("UNKNOWN"); |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 216 | break; |
| 217 | |
| 218 | default: |
| 219 | printf ("%d%sx", |
| 220 | cp->b2c_mult / 2, |
| 221 | (cp->b2c_mult % 2) ? ".5" : ""); |
| 222 | break; |
| 223 | } |
| 224 | |
| 225 | printf (", VCO Div %d, 60x Bus Freq %s, Core Freq %s\n", |
| 226 | cp->vco_div, cp->freq_60x, cp->freq_core); |
| 227 | |
| 228 | printf (" - dfbrg %ld, corecnf 0x%02lx, busdf %ld, cpmdf %ld, " |
Wolfgang Denk | c8fe36c | 2006-03-12 16:14:29 +0100 | [diff] [blame] | 229 | "plldf %ld, pllmf %ld, pcidf %ld\n", |
| 230 | dfbrg, corecnf, busdf, cpmdf, |
| 231 | plldf, pllmf, pcidf); |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 232 | |
| 233 | printf (" - vco_out %10ld, scc_clk %10ld, brg_clk %10ld\n", |
| 234 | gd->vco_out, gd->scc_clk, gd->brg_clk); |
| 235 | |
wdenk | 42c0547 | 2004-03-23 22:14:11 +0000 | [diff] [blame] | 236 | printf (" - cpu_clk %10ld, cpm_clk %10ld, bus_clk %10ld\n", |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 237 | gd->cpu_clk, gd->cpm_clk, gd->bus_clk); |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 238 | #ifdef CONFIG_PCI |
| 239 | printf (" - pci_clk %10ld\n", gd->pci_clk); |
| 240 | #endif |
wdenk | 42c0547 | 2004-03-23 22:14:11 +0000 | [diff] [blame] | 241 | putc ('\n'); |
| 242 | |
wdenk | 4a9cbbe | 2002-08-27 09:48:53 +0000 | [diff] [blame] | 243 | return (0); |
| 244 | } |