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42d1f039 | 1 | /* |
beba93ed | 2 | * Copyright 2004, 2007-2011 Freescale Semiconductor, Inc. |
39aaca1f | 3 | * |
42d1f039 WD |
4 | * (C) Copyright 2003 Motorola Inc. |
5 | * Xianghua Xiao, (X.Xiao@motorola.com) | |
6 | * | |
7 | * (C) Copyright 2000 | |
8 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
9 | * | |
10 | * See file CREDITS for list of people who contributed to this | |
11 | * project. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation; either version 2 of | |
16 | * the License, or (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
26 | * MA 02111-1307 USA | |
27 | */ | |
28 | ||
29 | #include <common.h> | |
30 | #include <ppc_asm.tmpl> | |
a52d2f81 | 31 | #include <linux/compiler.h> |
42d1f039 | 32 | #include <asm/processor.h> |
ada591d2 | 33 | #include <asm/io.h> |
42d1f039 | 34 | |
d87080b7 WD |
35 | DECLARE_GLOBAL_DATA_PTR; |
36 | ||
42d1f039 WD |
37 | /* --------------------------------------------------------------- */ |
38 | ||
42d1f039 WD |
39 | void get_sys_info (sys_info_t * sysInfo) |
40 | { | |
6d0f6bcf | 41 | volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); |
39aaca1f KG |
42 | #ifdef CONFIG_FSL_CORENET |
43 | volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR); | |
44 | ||
45 | const u8 core_cplx_PLL[16] = { | |
46 | [ 0] = 0, /* CC1 PPL / 1 */ | |
47 | [ 1] = 0, /* CC1 PPL / 2 */ | |
48 | [ 2] = 0, /* CC1 PPL / 4 */ | |
49 | [ 4] = 1, /* CC2 PPL / 1 */ | |
50 | [ 5] = 1, /* CC2 PPL / 2 */ | |
51 | [ 6] = 1, /* CC2 PPL / 4 */ | |
52 | [ 8] = 2, /* CC3 PPL / 1 */ | |
53 | [ 9] = 2, /* CC3 PPL / 2 */ | |
54 | [10] = 2, /* CC3 PPL / 4 */ | |
55 | [12] = 3, /* CC4 PPL / 1 */ | |
56 | [13] = 3, /* CC4 PPL / 2 */ | |
57 | [14] = 3, /* CC4 PPL / 4 */ | |
58 | }; | |
59 | ||
60 | const u8 core_cplx_PLL_div[16] = { | |
61 | [ 0] = 1, /* CC1 PPL / 1 */ | |
62 | [ 1] = 2, /* CC1 PPL / 2 */ | |
63 | [ 2] = 4, /* CC1 PPL / 4 */ | |
64 | [ 4] = 1, /* CC2 PPL / 1 */ | |
65 | [ 5] = 2, /* CC2 PPL / 2 */ | |
66 | [ 6] = 4, /* CC2 PPL / 4 */ | |
67 | [ 8] = 1, /* CC3 PPL / 1 */ | |
68 | [ 9] = 2, /* CC3 PPL / 2 */ | |
69 | [10] = 4, /* CC3 PPL / 4 */ | |
70 | [12] = 1, /* CC4 PPL / 1 */ | |
71 | [13] = 2, /* CC4 PPL / 2 */ | |
72 | [14] = 4, /* CC4 PPL / 4 */ | |
73 | }; | |
74 | uint lcrr_div, i, freqCC_PLL[4], rcw_tmp; | |
ab48ca1a | 75 | uint ratio[4]; |
39aaca1f | 76 | unsigned long sysclk = CONFIG_SYS_CLK_FREQ; |
ab48ca1a | 77 | uint mem_pll_rat; |
39aaca1f KG |
78 | |
79 | sysInfo->freqSystemBus = sysclk; | |
80 | sysInfo->freqDDRBus = sysclk; | |
39aaca1f | 81 | |
93cedc71 | 82 | sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f; |
ab48ca1a SS |
83 | mem_pll_rat = (in_be32(&gur->rcwsr[0]) >> 17) & 0x1f; |
84 | if (mem_pll_rat > 2) | |
85 | sysInfo->freqDDRBus *= mem_pll_rat; | |
86 | else | |
87 | sysInfo->freqDDRBus = sysInfo->freqSystemBus * mem_pll_rat; | |
39aaca1f | 88 | |
ab48ca1a SS |
89 | ratio[0] = (in_be32(&clk->pllc1gsr) >> 1) & 0x3f; |
90 | ratio[1] = (in_be32(&clk->pllc2gsr) >> 1) & 0x3f; | |
91 | ratio[2] = (in_be32(&clk->pllc3gsr) >> 1) & 0x3f; | |
92 | ratio[3] = (in_be32(&clk->pllc4gsr) >> 1) & 0x3f; | |
93 | for (i = 0; i < 4; i++) { | |
94 | if (ratio[i] > 4) | |
95 | freqCC_PLL[i] = sysclk * ratio[i]; | |
96 | else | |
97 | freqCC_PLL[i] = sysInfo->freqSystemBus * ratio[i]; | |
98 | } | |
39aaca1f KG |
99 | rcw_tmp = in_be32(&gur->rcwsr[3]); |
100 | for (i = 0; i < cpu_numcores(); i++) { | |
101 | u32 c_pll_sel = (in_be32(&clk->clkc0csr + i*8) >> 27) & 0xf; | |
102 | u32 cplx_pll = core_cplx_PLL[c_pll_sel]; | |
103 | ||
104 | sysInfo->freqProcessor[i] = | |
105 | freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel]; | |
106 | } | |
107 | ||
108 | #define PME_CLK_SEL 0x80000000 | |
109 | #define FM1_CLK_SEL 0x40000000 | |
110 | #define FM2_CLK_SEL 0x20000000 | |
b5c8753f KG |
111 | #define HWA_ASYNC_DIV 0x04000000 |
112 | #if (CONFIG_SYS_FSL_NUM_CC_PLLS == 2) | |
113 | #define HWA_CC_PLL 1 | |
114 | #elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 4) | |
cd6881b5 | 115 | #define HWA_CC_PLL 2 |
b5c8753f KG |
116 | #else |
117 | #error CONFIG_SYS_FSL_NUM_CC_PLLS not set or unknown case | |
118 | #endif | |
39aaca1f KG |
119 | rcw_tmp = in_be32(&gur->rcwsr[7]); |
120 | ||
121 | #ifdef CONFIG_SYS_DPAA_PME | |
b5c8753f KG |
122 | if (rcw_tmp & PME_CLK_SEL) { |
123 | if (rcw_tmp & HWA_ASYNC_DIV) | |
124 | sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 4; | |
125 | else | |
126 | sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 2; | |
127 | } else { | |
693416fe | 128 | sysInfo->freqPME = sysInfo->freqSystemBus / 2; |
b5c8753f | 129 | } |
39aaca1f KG |
130 | #endif |
131 | ||
132 | #ifdef CONFIG_SYS_DPAA_FMAN | |
b5c8753f KG |
133 | if (rcw_tmp & FM1_CLK_SEL) { |
134 | if (rcw_tmp & HWA_ASYNC_DIV) | |
135 | sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 4; | |
136 | else | |
137 | sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 2; | |
138 | } else { | |
693416fe | 139 | sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2; |
b5c8753f | 140 | } |
39aaca1f | 141 | #if (CONFIG_SYS_NUM_FMAN) == 2 |
b5c8753f KG |
142 | if (rcw_tmp & FM2_CLK_SEL) { |
143 | if (rcw_tmp & HWA_ASYNC_DIV) | |
144 | sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 4; | |
145 | else | |
146 | sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 2; | |
147 | } else { | |
693416fe | 148 | sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2; |
b5c8753f | 149 | } |
39aaca1f KG |
150 | #endif |
151 | #endif | |
152 | ||
153 | #else | |
66ed6cca | 154 | uint plat_ratio,e500_ratio,half_freqSystemBus; |
beba93ed | 155 | #if defined(CONFIG_FSL_LBC) |
ada591d2 | 156 | uint lcrr_div; |
beba93ed | 157 | #endif |
2fc7eb0c | 158 | int i; |
b3d7f20f | 159 | #ifdef CONFIG_QE |
a52d2f81 | 160 | __maybe_unused u32 qe_ratio; |
b3d7f20f | 161 | #endif |
42d1f039 WD |
162 | |
163 | plat_ratio = (gur->porpllsr) & 0x0000003e; | |
164 | plat_ratio >>= 1; | |
66ed6cca | 165 | sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ; |
66ed6cca AF |
166 | |
167 | /* Divide before multiply to avoid integer | |
168 | * overflow for processor speeds above 2GHz */ | |
169 | half_freqSystemBus = sysInfo->freqSystemBus/2; | |
0e870980 | 170 | for (i = 0; i < cpu_numcores(); i++) { |
2fc7eb0c HW |
171 | e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f; |
172 | sysInfo->freqProcessor[i] = e500_ratio * half_freqSystemBus; | |
173 | } | |
a3e77fa5 JY |
174 | |
175 | /* Note: freqDDRBus is the MCLK frequency, not the data rate. */ | |
d4357932 KG |
176 | sysInfo->freqDDRBus = sysInfo->freqSystemBus; |
177 | ||
178 | #ifdef CONFIG_DDR_CLK_FREQ | |
179 | { | |
c0391111 JJ |
180 | u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO) |
181 | >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT; | |
d4357932 KG |
182 | if (ddr_ratio != 0x7) |
183 | sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ; | |
184 | } | |
185 | #endif | |
ada591d2 | 186 | |
b3d7f20f | 187 | #ifdef CONFIG_QE |
a52d2f81 HW |
188 | #if defined(CONFIG_P1012) || defined(CONFIG_P1016) || \ |
189 | defined(CONFIG_P1021) || defined(CONFIG_P1025) | |
190 | sysInfo->freqQE = sysInfo->freqSystemBus; | |
191 | #else | |
b3d7f20f HW |
192 | qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO) |
193 | >> MPC85xx_PORPLLSR_QE_RATIO_SHIFT; | |
194 | sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ; | |
195 | #endif | |
a52d2f81 | 196 | #endif |
b3d7f20f | 197 | |
24995d82 | 198 | #ifdef CONFIG_SYS_DPAA_FMAN |
939cdcdc | 199 | sysInfo->freqFMan[0] = sysInfo->freqSystemBus; |
24995d82 HW |
200 | #endif |
201 | ||
202 | #endif /* CONFIG_FSL_CORENET */ | |
203 | ||
beba93ed | 204 | #if defined(CONFIG_FSL_LBC) |
ada591d2 TP |
205 | #if defined(CONFIG_SYS_LBC_LCRR) |
206 | /* We will program LCRR to this value later */ | |
207 | lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV; | |
208 | #else | |
f51cdaf1 | 209 | lcrr_div = in_be32(&(LBC_BASE_ADDR)->lcrr) & LCRR_CLKDIV; |
ada591d2 TP |
210 | #endif |
211 | if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) { | |
0fd2fa6c DL |
212 | #if defined(CONFIG_FSL_CORENET) |
213 | /* If this is corenet based SoC, bit-representation | |
214 | * for four times the clock divider values. | |
215 | */ | |
216 | lcrr_div *= 4; | |
217 | #elif !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \ | |
ada591d2 TP |
218 | !defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560) |
219 | /* | |
220 | * Yes, the entire PQ38 family use the same | |
221 | * bit-representation for twice the clock divider values. | |
222 | */ | |
223 | lcrr_div *= 2; | |
224 | #endif | |
225 | sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div; | |
226 | } else { | |
227 | /* In case anyone cares what the unknown value is */ | |
228 | sysInfo->freqLocalBus = lcrr_div; | |
229 | } | |
beba93ed | 230 | #endif |
42d1f039 WD |
231 | } |
232 | ||
66ed6cca | 233 | |
42d1f039 WD |
234 | int get_clocks (void) |
235 | { | |
42d1f039 | 236 | sys_info_t sys_info; |
88353a98 | 237 | #ifdef CONFIG_MPC8544 |
6d0f6bcf | 238 | volatile ccsr_gur_t *gur = (void *) CONFIG_SYS_MPC85xx_GUTS_ADDR; |
88353a98 | 239 | #endif |
9c4c5ae3 | 240 | #if defined(CONFIG_CPM2) |
6d0f6bcf | 241 | volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; |
42d1f039 WD |
242 | uint sccr, dfbrg; |
243 | ||
244 | /* set VCO = 4 * BRG */ | |
aafeefbd KG |
245 | cpm->im_cpm_intctl.sccr &= 0xfffffffc; |
246 | sccr = cpm->im_cpm_intctl.sccr; | |
42d1f039 WD |
247 | dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; |
248 | #endif | |
249 | get_sys_info (&sys_info); | |
2fc7eb0c | 250 | gd->cpu_clk = sys_info.freqProcessor[0]; |
42d1f039 | 251 | gd->bus_clk = sys_info.freqSystemBus; |
a3e77fa5 | 252 | gd->mem_clk = sys_info.freqDDRBus; |
ada591d2 | 253 | gd->lbc_clk = sys_info.freqLocalBus; |
88353a98 | 254 | |
b3d7f20f HW |
255 | #ifdef CONFIG_QE |
256 | gd->qe_clk = sys_info.freqQE; | |
257 | gd->brg_clk = gd->qe_clk / 2; | |
258 | #endif | |
88353a98 TT |
259 | /* |
260 | * The base clock for I2C depends on the actual SOC. Unfortunately, | |
261 | * there is no pattern that can be used to determine the frequency, so | |
262 | * the only choice is to look up the actual SOC number and use the value | |
263 | * for that SOC. This information is taken from application note | |
264 | * AN2919. | |
265 | */ | |
266 | #if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \ | |
267 | defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555) | |
943afa22 | 268 | gd->i2c1_clk = sys_info.freqSystemBus; |
88353a98 TT |
269 | #elif defined(CONFIG_MPC8544) |
270 | /* | |
271 | * On the 8544, the I2C clock is the same as the SEC clock. This can be | |
272 | * either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See | |
273 | * 4.4.3.3 of the 8544 RM. Note that this might actually work for all | |
274 | * 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the | |
275 | * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544. | |
276 | */ | |
277 | if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG) | |
dffd2446 | 278 | gd->i2c1_clk = sys_info.freqSystemBus / 3; |
42653b82 KG |
279 | else |
280 | gd->i2c1_clk = sys_info.freqSystemBus / 2; | |
88353a98 TT |
281 | #else |
282 | /* Most 85xx SOCs use CCB/2, so this is the default behavior. */ | |
283 | gd->i2c1_clk = sys_info.freqSystemBus / 2; | |
284 | #endif | |
285 | gd->i2c2_clk = gd->i2c1_clk; | |
943afa22 | 286 | |
6b9ea08c | 287 | #if defined(CONFIG_FSL_ESDHC) |
7d640e9b PJ |
288 | #if defined(CONFIG_MPC8569) || defined(CONFIG_P1010) ||\ |
289 | defined(CONFIG_P1014) | |
7f52ed5e AV |
290 | gd->sdhc_clk = gd->bus_clk; |
291 | #else | |
ef50d6c0 KG |
292 | gd->sdhc_clk = gd->bus_clk / 2; |
293 | #endif | |
7f52ed5e | 294 | #endif /* defined(CONFIG_FSL_ESDHC) */ |
ef50d6c0 | 295 | |
9c4c5ae3 | 296 | #if defined(CONFIG_CPM2) |
42d1f039 WD |
297 | gd->vco_out = 2*sys_info.freqSystemBus; |
298 | gd->cpm_clk = gd->vco_out / 2; | |
299 | gd->scc_clk = gd->vco_out / 4; | |
300 | gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1))); | |
301 | #endif | |
302 | ||
303 | if(gd->cpu_clk != 0) return (0); | |
304 | else return (1); | |
305 | } | |
306 | ||
307 | ||
308 | /******************************************** | |
309 | * get_bus_freq | |
310 | * return system bus freq in Hz | |
311 | *********************************************/ | |
312 | ulong get_bus_freq (ulong dummy) | |
313 | { | |
a3e77fa5 | 314 | return gd->bus_clk; |
42d1f039 | 315 | } |
d4357932 KG |
316 | |
317 | /******************************************** | |
318 | * get_ddr_freq | |
319 | * return ddr bus freq in Hz | |
320 | *********************************************/ | |
321 | ulong get_ddr_freq (ulong dummy) | |
322 | { | |
a3e77fa5 | 323 | return gd->mem_clk; |
d4357932 | 324 | } |