epsoc.c revision 1.4
1 /* $NetBSD: epsoc.c,v 1.4 2005/08/26 13:19:34 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Jesse Off 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: epsoc.c,v 1.4 2005/08/26 13:19:34 drochner Exp $"); 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/time.h> 44 #include <sys/device.h> 45 46 #include <machine/bus.h> 47 #include <machine/intr.h> 48 49 #include <arm/cpufunc.h> 50 51 #include <arm/ep93xx/ep93xxreg.h> 52 #include <arm/ep93xx/ep93xxvar.h> 53 #include <arm/ep93xx/epsocvar.h> 54 55 #include "locators.h" 56 57 static int epsoc_match(struct device *, struct cfdata *, void *); 58 static void epsoc_attach(struct device *, struct device *, void *); 59 static int epsoc_search(struct device *, struct cfdata *, 60 const int *, void *); 61 static int epsoc_print(void *, const char *); 62 63 CFATTACH_DECL(epsoc, sizeof(struct epsoc_softc), 64 epsoc_match, epsoc_attach, NULL, NULL); 65 66 struct epsoc_softc *epsoc_sc = NULL; 67 68 static int 69 epsoc_match(struct device *parent, struct cfdata *match, void *aux) 70 { 71 bus_space_handle_t ioh; 72 u_int32_t id, ret = 0; 73 74 bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, 75 EP93XX_APB_SYSCON_SIZE, 0, &ioh); 76 id = bus_space_read_4(&ep93xx_bs_tag, ioh, EP93XX_SYSCON_ChipID); 77 if ((id & 0x01faffff) == 0x9213) ret = 1; 78 bus_space_unmap(&ep93xx_bs_tag, ioh, EP93XX_APB_SYSCON_SIZE); 79 return ret; 80 } 81 82 static void 83 epsoc_attach(struct device *parent, struct device *self, void *aux) 84 { 85 struct epsoc_softc *sc; 86 u_int64_t fclk, pclk, hclk; 87 u_int32_t id, clkset1; 88 const char *rev; 89 90 91 sc = (struct epsoc_softc*) self; 92 93 if (epsoc_sc == NULL) 94 epsoc_sc = sc; 95 96 sc->sc_iot = &ep93xx_bs_tag; 97 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, 98 EP93XX_APB_SYSCON_SIZE, 0, &sc->sc_ioh); 99 id = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_SYSCON_ChipID); 100 switch(id >> 28) { 101 case 0: 102 rev = "A"; 103 break; 104 case 1: 105 rev = "B"; 106 break; 107 case 2: 108 rev = "C"; 109 break; 110 case 3: 111 rev = "D0"; 112 break; 113 case 4: 114 rev = "D1"; 115 break; 116 case 5: 117 rev = "E0"; 118 break; 119 case 6: 120 rev = "E1"; 121 break; 122 default: 123 rev = ">E1"; 124 break; 125 } 126 printf(": Cirrus Logic EP93xx SoC rev %s\n", rev); 127 128 clkset1 = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 129 EP93XX_SYSCON_ClkSet1); 130 { 131 int fclkdiv, hclkdiv, pclkdiv, pll1_ps; 132 int pll1x1fbd1, pll1x2fbd2, pll1x2ipd; 133 int hclkdivisors[] = {1, 2, 4, 5, 6, 8, 16, 32}; 134 135 fclkdiv = (clkset1 & 0x0e000000) >> 25; 136 hclkdiv = (clkset1 & 0x00700000) >> 20; 137 pclkdiv = (clkset1 & 0x000c0000) >> 18; 138 pll1_ps = (clkset1 & 0x00030000) >> 16; 139 pll1x1fbd1 = (clkset1 & 0x0000f800) >> 11; 140 pll1x2fbd2 = (clkset1 & 0x000007e0) >> 5; 141 pll1x2ipd = (clkset1 & 0x0000001f); 142 fclk = 14745600ULL * ((pll1x1fbd1 + 1) * (pll1x2fbd2 + 1)) / 143 ((pll1x2ipd + 1) * (1 << pll1_ps)); 144 hclk = fclk / hclkdivisors[hclkdiv]; 145 pclk = hclk >> pclkdiv; 146 if (fclkdiv > 4) fclkdiv = 0; 147 if (clkset1 & 0x00800000) /* nBYP1 bypasses PLL */ 148 fclk = fclk >> fclkdiv; 149 else 150 fclk = 14745600ULL; 151 } 152 printf("%s: fclk %lld.%02lld Mhz hclk %lld.%02lld Mhz pclk %lld.%02lld Mhz\n", 153 sc->sc_dev.dv_xname, 154 fclk / 1000000, (fclk % 1000000 + 5000) / 10000, 155 hclk / 1000000, (hclk % 1000000 + 5000) / 10000, 156 pclk / 1000000, (pclk % 1000000 + 5000) / 10000); 157 158 sc->sc_fclk = fclk; 159 sc->sc_hclk = hclk; 160 sc->sc_pclk = pclk; 161 162 /* get busdma tag for the platform */ 163 sc->sc_dmat = ep93xx_bus_dma_init(&ep93xx_bus_dma); 164 165 /* 166 * Attach each devices 167 */ 168 config_search_ia(epsoc_search, self, "epsoc", NULL); 169 170 } 171 172 int 173 epsoc_search(parent, cf, ldesc, aux) 174 struct device *parent; 175 struct cfdata *cf; 176 const int *ldesc; 177 void *aux; 178 { 179 struct epsoc_softc *sc = (struct epsoc_softc *)parent; 180 struct epsoc_attach_args sa; 181 182 sa.sa_iot = sc->sc_iot; 183 sa.sa_dmat = sc->sc_dmat; 184 sa.sa_addr = cf->cf_loc[EPSOCCF_ADDR]; 185 sa.sa_size = cf->cf_loc[EPSOCCF_SIZE]; 186 sa.sa_intr = cf->cf_loc[EPSOCCF_INTR]; 187 sa.sa_hclk = sc->sc_hclk; 188 sa.sa_pclk = sc->sc_pclk; 189 190 if (config_match(parent, cf, &sa) > 0) 191 config_attach(parent, cf, &sa, epsoc_print); 192 193 return (0); 194 } 195 196 static int 197 epsoc_print(aux, name) 198 void *aux; 199 const char *name; 200 { 201 struct epsoc_attach_args *sa = (struct epsoc_attach_args*)aux; 202 203 if (sa->sa_size) 204 aprint_normal(" addr 0x%lx", sa->sa_addr); 205 if (sa->sa_size > 1) 206 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 207 if (sa->sa_intr > 1) 208 aprint_normal(" intr %d", sa->sa_intr); 209 210 return (UNCONF); 211 } 212
Indexes created Wed Sep 24 02:09:48 GMT 2025