2 * Copyright 2004, 2007-2011 Freescale Semiconductor, Inc.
4 * (C) Copyright 2003 Motorola Inc.
5 * Xianghua Xiao, (X.Xiao@motorola.com)
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
10 * See file CREDITS for list of people who contributed to this
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.
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.
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,
30 #include <ppc_asm.tmpl>
31 #include <linux/compiler.h>
32 #include <asm/processor.h>
35 DECLARE_GLOBAL_DATA_PTR;
37 /* --------------------------------------------------------------- */
39 void get_sys_info (sys_info_t * sysInfo)
41 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
43 struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
46 #ifdef CONFIG_FSL_CORENET
47 volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
50 const u8 core_cplx_PLL[16] = {
51 [ 0] = 0, /* CC1 PPL / 1 */
52 [ 1] = 0, /* CC1 PPL / 2 */
53 [ 2] = 0, /* CC1 PPL / 4 */
54 [ 4] = 1, /* CC2 PPL / 1 */
55 [ 5] = 1, /* CC2 PPL / 2 */
56 [ 6] = 1, /* CC2 PPL / 4 */
57 [ 8] = 2, /* CC3 PPL / 1 */
58 [ 9] = 2, /* CC3 PPL / 2 */
59 [10] = 2, /* CC3 PPL / 4 */
60 [12] = 3, /* CC4 PPL / 1 */
61 [13] = 3, /* CC4 PPL / 2 */
62 [14] = 3, /* CC4 PPL / 4 */
65 const u8 core_cplx_PLL_div[16] = {
66 [ 0] = 1, /* CC1 PPL / 1 */
67 [ 1] = 2, /* CC1 PPL / 2 */
68 [ 2] = 4, /* CC1 PPL / 4 */
69 [ 4] = 1, /* CC2 PPL / 1 */
70 [ 5] = 2, /* CC2 PPL / 2 */
71 [ 6] = 4, /* CC2 PPL / 4 */
72 [ 8] = 1, /* CC3 PPL / 1 */
73 [ 9] = 2, /* CC3 PPL / 2 */
74 [10] = 4, /* CC3 PPL / 4 */
75 [12] = 1, /* CC4 PPL / 1 */
76 [13] = 2, /* CC4 PPL / 2 */
77 [14] = 4, /* CC4 PPL / 4 */
79 uint i, freqCC_PLL[6], rcw_tmp;
81 unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
84 sysInfo->freqSystemBus = sysclk;
85 #ifdef CONFIG_DDR_CLK_FREQ
86 sysInfo->freqDDRBus = CONFIG_DDR_CLK_FREQ;
88 sysInfo->freqDDRBus = sysclk;
91 sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f;
92 mem_pll_rat = (in_be32(&gur->rcwsr[0]) >>
93 FSL_CORENET_RCWSR0_MEM_PLL_RAT_SHIFT)
94 & FSL_CORENET_RCWSR0_MEM_PLL_RAT_MASK;
96 sysInfo->freqDDRBus *= mem_pll_rat;
98 sysInfo->freqDDRBus = sysInfo->freqSystemBus * mem_pll_rat;
100 ratio[0] = (in_be32(&clk->pllc1gsr) >> 1) & 0x3f;
101 ratio[1] = (in_be32(&clk->pllc2gsr) >> 1) & 0x3f;
102 ratio[2] = (in_be32(&clk->pllc3gsr) >> 1) & 0x3f;
103 ratio[3] = (in_be32(&clk->pllc4gsr) >> 1) & 0x3f;
104 ratio[4] = (in_be32(&clk->pllc5gsr) >> 1) & 0x3f;
105 ratio[5] = (in_be32(&clk->pllc6gsr) >> 1) & 0x3f;
106 for (i = 0; i < 6; i++) {
108 freqCC_PLL[i] = sysclk * ratio[i];
110 freqCC_PLL[i] = sysInfo->freqSystemBus * ratio[i];
112 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
114 * Each cluster has up to 4 cores, sharing the same PLL selection.
115 * The cluster assignment is fixed per SoC. There is no way identify the
116 * assignment so far, presuming the "first configuration" which is to
117 * fill the lower cluster group first before moving up to next group.
118 * PLL1, PLL2, PLL3 are cluster group A, feeding core 0~3 on cluster 1
119 * and core 4~7 on cluster 2
120 * PLL4, PLL5, PLL6 are cluster group B, feeding core 8~11 on cluster 3
121 * and core 12~15 on cluster 4 if existing
123 for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
124 u32 c_pll_sel = (in_be32(&clk->clkc0csr + (cpu / 4) * 8) >> 27)
126 u32 cplx_pll = core_cplx_PLL[c_pll_sel];
128 printf("Unsupported architecture configuration"
129 " in function %s\n", __func__);
130 cplx_pll += (cpu / 8) * 3;
132 sysInfo->freqProcessor[cpu] =
133 freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
135 #ifdef CONFIG_PPC_B4860
136 #define FM1_CLK_SEL 0xe0000000
137 #define FM1_CLK_SHIFT 29
139 #define PME_CLK_SEL 0xe0000000
140 #define PME_CLK_SHIFT 29
141 #define FM1_CLK_SEL 0x1c000000
142 #define FM1_CLK_SHIFT 26
144 rcw_tmp = in_be32(&gur->rcwsr[7]);
146 #ifdef CONFIG_SYS_DPAA_PME
147 switch ((rcw_tmp & PME_CLK_SEL) >> PME_CLK_SHIFT) {
149 sysInfo->freqPME = freqCC_PLL[0];
152 sysInfo->freqPME = freqCC_PLL[0] / 2;
155 sysInfo->freqPME = freqCC_PLL[0] / 3;
158 sysInfo->freqPME = freqCC_PLL[0] / 4;
161 sysInfo->freqPME = freqCC_PLL[1] / 2;
164 sysInfo->freqPME = freqCC_PLL[1] / 3;
167 printf("Error: Unknown PME clock select!\n");
169 sysInfo->freqPME = sysInfo->freqSystemBus / 2;
175 #ifdef CONFIG_SYS_DPAA_QBMAN
176 sysInfo->freqQMAN = sysInfo->freqSystemBus / 2;
179 #ifdef CONFIG_SYS_DPAA_FMAN
180 switch ((rcw_tmp & FM1_CLK_SEL) >> FM1_CLK_SHIFT) {
182 sysInfo->freqFMan[0] = freqCC_PLL[3];
185 sysInfo->freqFMan[0] = freqCC_PLL[3] / 2;
188 sysInfo->freqFMan[0] = freqCC_PLL[3] / 3;
191 sysInfo->freqFMan[0] = freqCC_PLL[3] / 4;
194 sysInfo->freqFMan[0] = sysInfo->freqSystemBus;
197 sysInfo->freqFMan[0] = freqCC_PLL[4] / 2;
200 sysInfo->freqFMan[0] = freqCC_PLL[4] / 3;
203 printf("Error: Unknown FMan1 clock select!\n");
205 sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
208 #if (CONFIG_SYS_NUM_FMAN) == 2
209 #define FM2_CLK_SEL 0x00000038
210 #define FM2_CLK_SHIFT 3
211 rcw_tmp = in_be32(&gur->rcwsr[15]);
212 switch ((rcw_tmp & FM2_CLK_SEL) >> FM2_CLK_SHIFT) {
214 sysInfo->freqFMan[1] = freqCC_PLL[4];
217 sysInfo->freqFMan[1] = freqCC_PLL[4] / 2;
220 sysInfo->freqFMan[1] = freqCC_PLL[4] / 3;
223 sysInfo->freqFMan[1] = freqCC_PLL[4] / 4;
226 sysInfo->freqFMan[1] = freqCC_PLL[3] / 2;
229 sysInfo->freqFMan[1] = freqCC_PLL[3] / 3;
232 printf("Error: Unknown FMan2 clock select!\n");
234 sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
237 #endif /* CONFIG_SYS_NUM_FMAN == 2 */
238 #endif /* CONFIG_SYS_DPAA_FMAN */
240 #else /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
242 for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
243 u32 c_pll_sel = (in_be32(&clk->clkc0csr + cpu*8) >> 27) & 0xf;
244 u32 cplx_pll = core_cplx_PLL[c_pll_sel];
246 sysInfo->freqProcessor[cpu] =
247 freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
249 #define PME_CLK_SEL 0x80000000
250 #define FM1_CLK_SEL 0x40000000
251 #define FM2_CLK_SEL 0x20000000
252 #define HWA_ASYNC_DIV 0x04000000
253 #if (CONFIG_SYS_FSL_NUM_CC_PLLS == 2)
255 #elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 3)
257 #elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 4)
260 #error CONFIG_SYS_FSL_NUM_CC_PLLS not set or unknown case
262 rcw_tmp = in_be32(&gur->rcwsr[7]);
264 #ifdef CONFIG_SYS_DPAA_PME
265 if (rcw_tmp & PME_CLK_SEL) {
266 if (rcw_tmp & HWA_ASYNC_DIV)
267 sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 4;
269 sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 2;
271 sysInfo->freqPME = sysInfo->freqSystemBus / 2;
275 #ifdef CONFIG_SYS_DPAA_FMAN
276 if (rcw_tmp & FM1_CLK_SEL) {
277 if (rcw_tmp & HWA_ASYNC_DIV)
278 sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 4;
280 sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 2;
282 sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
284 #if (CONFIG_SYS_NUM_FMAN) == 2
285 if (rcw_tmp & FM2_CLK_SEL) {
286 if (rcw_tmp & HWA_ASYNC_DIV)
287 sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 4;
289 sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 2;
291 sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
296 #ifdef CONFIG_SYS_DPAA_QBMAN
297 sysInfo->freqQMAN = sysInfo->freqSystemBus / 2;
300 #endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
302 #else /* CONFIG_FSL_CORENET */
303 uint plat_ratio, e500_ratio, half_freqSystemBus;
306 __maybe_unused u32 qe_ratio;
309 plat_ratio = (gur->porpllsr) & 0x0000003e;
311 sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ;
313 /* Divide before multiply to avoid integer
314 * overflow for processor speeds above 2GHz */
315 half_freqSystemBus = sysInfo->freqSystemBus/2;
316 for (i = 0; i < cpu_numcores(); i++) {
317 e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f;
318 sysInfo->freqProcessor[i] = e500_ratio * half_freqSystemBus;
321 /* Note: freqDDRBus is the MCLK frequency, not the data rate. */
322 sysInfo->freqDDRBus = sysInfo->freqSystemBus;
324 #ifdef CONFIG_DDR_CLK_FREQ
326 u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
327 >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
328 if (ddr_ratio != 0x7)
329 sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ;
334 #if defined(CONFIG_P1012) || defined(CONFIG_P1021) || defined(CONFIG_P1025)
335 sysInfo->freqQE = sysInfo->freqSystemBus;
337 qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO)
338 >> MPC85xx_PORPLLSR_QE_RATIO_SHIFT;
339 sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ;
343 #ifdef CONFIG_SYS_DPAA_FMAN
344 sysInfo->freqFMan[0] = sysInfo->freqSystemBus;
347 #endif /* CONFIG_FSL_CORENET */
349 #if defined(CONFIG_FSL_LBC)
351 #if defined(CONFIG_SYS_LBC_LCRR)
352 /* We will program LCRR to this value later */
353 lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
355 lcrr_div = in_be32(&(LBC_BASE_ADDR)->lcrr) & LCRR_CLKDIV;
357 if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) {
358 #if defined(CONFIG_FSL_CORENET)
359 /* If this is corenet based SoC, bit-representation
360 * for four times the clock divider values.
363 #elif !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
364 !defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
366 * Yes, the entire PQ38 family use the same
367 * bit-representation for twice the clock divider values.
371 sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div;
373 /* In case anyone cares what the unknown value is */
374 sysInfo->freqLocalBus = lcrr_div;
378 #if defined(CONFIG_FSL_IFC)
379 ccr = in_be32(&ifc_regs->ifc_ccr);
380 ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
382 sysInfo->freqLocalBus = sysInfo->freqSystemBus / ccr;
387 int get_clocks (void)
390 #ifdef CONFIG_MPC8544
391 volatile ccsr_gur_t *gur = (void *) CONFIG_SYS_MPC85xx_GUTS_ADDR;
393 #if defined(CONFIG_CPM2)
394 volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
397 /* set VCO = 4 * BRG */
398 cpm->im_cpm_intctl.sccr &= 0xfffffffc;
399 sccr = cpm->im_cpm_intctl.sccr;
400 dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
402 get_sys_info (&sys_info);
403 gd->cpu_clk = sys_info.freqProcessor[0];
404 gd->bus_clk = sys_info.freqSystemBus;
405 gd->mem_clk = sys_info.freqDDRBus;
406 gd->arch.lbc_clk = sys_info.freqLocalBus;
409 gd->arch.qe_clk = sys_info.freqQE;
410 gd->arch.brg_clk = gd->arch.qe_clk / 2;
413 * The base clock for I2C depends on the actual SOC. Unfortunately,
414 * there is no pattern that can be used to determine the frequency, so
415 * the only choice is to look up the actual SOC number and use the value
416 * for that SOC. This information is taken from application note
419 #if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
420 defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555)
421 gd->arch.i2c1_clk = sys_info.freqSystemBus;
422 #elif defined(CONFIG_MPC8544)
424 * On the 8544, the I2C clock is the same as the SEC clock. This can be
425 * either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See
426 * 4.4.3.3 of the 8544 RM. Note that this might actually work for all
427 * 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the
428 * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544.
430 if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG)
431 gd->arch.i2c1_clk = sys_info.freqSystemBus / 3;
433 gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
435 /* Most 85xx SOCs use CCB/2, so this is the default behavior. */
436 gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
438 gd->arch.i2c2_clk = gd->arch.i2c1_clk;
440 #if defined(CONFIG_FSL_ESDHC)
441 #if defined(CONFIG_MPC8569) || defined(CONFIG_P1010) ||\
442 defined(CONFIG_P1014)
443 gd->arch.sdhc_clk = gd->bus_clk;
445 gd->arch.sdhc_clk = gd->bus_clk / 2;
447 #endif /* defined(CONFIG_FSL_ESDHC) */
449 #if defined(CONFIG_CPM2)
450 gd->arch.vco_out = 2*sys_info.freqSystemBus;
451 gd->arch.cpm_clk = gd->arch.vco_out / 2;
452 gd->arch.scc_clk = gd->arch.vco_out / 4;
453 gd->arch.brg_clk = gd->arch.vco_out / (1 << (2 * (dfbrg + 1)));
456 if(gd->cpu_clk != 0) return (0);
461 /********************************************
463 * return system bus freq in Hz
464 *********************************************/
465 ulong get_bus_freq (ulong dummy)
470 /********************************************
472 * return ddr bus freq in Hz
473 *********************************************/
474 ulong get_ddr_freq (ulong dummy)