epsoc.c revision 1.2
1 /* $NetBSD: epsoc.c,v 1.2 2005/06/04 22:37:51 he 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 1.2 2005/06/04 22:37:51 he 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 *, void *); 60 static int epsoc_print(void *, const char *); 61 62 CFATTACH_DECL(epsoc, sizeof(struct epsoc_softc), 63 epsoc_match, epsoc_attach, NULL, NULL); 64 65 struct epsoc_softc *epsoc_sc = NULL; 66 67 static int 68 epsoc_match(struct device *parent, struct cfdata *match, void *aux) 69 { 70 bus_space_handle_t ioh; 71 u_int32_t id, ret = 0; 72 73 bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, 74 EP93XX_APB_SYSCON_SIZE, 0, &ioh); 75 id = bus_space_read_4(&ep93xx_bs_tag, ioh, EP93XX_SYSCON_ChipID); 76 if ((id & 0x01faffff) == 0x9213) ret = 1; 77 bus_space_unmap(&ep93xx_bs_tag, ioh, EP93XX_APB_SYSCON_SIZE); 78 return ret; 79 } 80 81 static void 82 epsoc_attach(struct device *parent, struct device *self, void *aux) 83 { 84 struct epsoc_softc *sc; 85 u_int64_t fclk, pclk, hclk; 86 u_int32_t id, clkset1; 87 const char *rev; 88 89 90 sc = (struct epsoc_softc*) self; 91 92 if (epsoc_sc == NULL) 93 epsoc_sc = sc; 94 95 sc->sc_iot = &ep93xx_bs_tag; 96 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, 97 EP93XX_APB_SYSCON_SIZE, 0, &sc->sc_ioh); 98 id = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_SYSCON_ChipID); 99 switch(id >> 28) { 100 case 0: 101 rev = "A"; 102 break; 103 case 1: 104 rev = "B"; 105 break; 106 case 2: 107 rev = "C"; 108 break; 109 case 3: 110 rev = "D0"; 111 break; 112 case 4: 113 rev = "D1"; 114 break; 115 case 5: 116 rev = "E0"; 117 break; 118 case 6: 119 rev = "E1"; 120 break; 121 default: 122 rev = ">E1"; 123 break; 124 } 125 printf(": Cirrus Logic EP93xx SoC rev %s\n", rev); 126 127 clkset1 = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 128 EP93XX_SYSCON_ClkSet1); 129 { 130 int fclkdiv, hclkdiv, pclkdiv, pll1_ps; 131 int pll1x1fbd1, pll1x2fbd2, pll1x2ipd; 132 int hclkdivisors[] = {1, 2, 4, 5, 6, 8, 16, 32}; 133 134 fclkdiv = (clkset1 & 0x0e000000) >> 25; 135 hclkdiv = (clkset1 & 0x00700000) >> 20; 136 pclkdiv = (clkset1 & 0x000c0000) >> 18; 137 pll1_ps = (clkset1 & 0x00030000) >> 16; 138 pll1x1fbd1 = (clkset1 & 0x0000f800) >> 11; 139 pll1x2fbd2 = (clkset1 & 0x000007e0) >> 5; 140 pll1x2ipd = (clkset1 & 0x0000001f); 141 fclk = 14745600ULL * ((pll1x1fbd1 + 1) * (pll1x2fbd2 + 1)) / 142 ((pll1x2ipd + 1) * (1 << pll1_ps)); 143 hclk = fclk / hclkdivisors[hclkdiv]; 144 pclk = hclk >> pclkdiv; 145 if (fclkdiv > 4) fclkdiv = 0; 146 if (clkset1 & 0x00800000) /* nBYP1 bypasses PLL */ 147 fclk = fclk >> fclkdiv; 148 else 149 fclk = 14745600ULL; 150 } 151 printf("%s: fclk %lld.%02lld Mhz hclk %lld.%02lld Mhz pclk %lld.%02lld Mhz\n", 152 sc->sc_dev.dv_xname, 153 fclk / 1000000, (fclk % 1000000 + 5000) / 10000, 154 hclk / 1000000, (hclk % 1000000 + 5000) / 10000, 155 pclk / 1000000, (pclk % 1000000 + 5000) / 10000); 156 157 sc->sc_fclk = fclk; 158 sc->sc_hclk = hclk; 159 sc->sc_pclk = pclk; 160 161 /* get busdma tag for the platform */ 162 sc->sc_dmat = ep93xx_bus_dma_init(&ep93xx_bus_dma); 163 164 /* 165 * Attach each devices 166 */ 167 config_search(epsoc_search, self, NULL); 168 169 } 170 171 int 172 epsoc_search(parent, cf, aux) 173 struct device *parent; 174 struct cfdata *cf; 175 void *aux; 176 { 177 struct epsoc_softc *sc = (struct epsoc_softc *)parent; 178 struct epsoc_attach_args sa; 179 180 sa.sa_iot = sc->sc_iot; 181 sa.sa_dmat = sc->sc_dmat; 182 sa.sa_addr = cf->cf_loc[EPSOCCF_ADDR]; 183 sa.sa_size = cf->cf_loc[EPSOCCF_SIZE]; 184 sa.sa_intr = cf->cf_loc[EPSOCCF_INTR]; 185 sa.sa_hclk = sc->sc_hclk; 186 sa.sa_pclk = sc->sc_pclk; 187 188 if (config_match(parent, cf, &sa) > 0) 189 config_attach(parent, cf, &sa, epsoc_print); 190 191 return (0); 192 } 193 194 static int 195 epsoc_print(aux, name) 196 void *aux; 197 const char *name; 198 { 199 struct epsoc_attach_args *sa = (struct epsoc_attach_args*)aux; 200 201 if (sa->sa_size) 202 aprint_normal(" addr 0x%lx", sa->sa_addr); 203 if (sa->sa_size > 1) 204 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 205 if (sa->sa_intr > 1) 206 aprint_normal(" intr %d", sa->sa_intr); 207 208 return (UNCONF); 209 } 210
Indexes created Tue Sep 23 02:09:52 GMT 2025