diff options
Diffstat (limited to 'arch/ppc/cpu/mpc85xx/speed.c')
| -rw-r--r-- | arch/ppc/cpu/mpc85xx/speed.c | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/arch/ppc/cpu/mpc85xx/speed.c b/arch/ppc/cpu/mpc85xx/speed.c deleted file mode 100644 index 268edbc..0000000 --- a/arch/ppc/cpu/mpc85xx/speed.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - * Copyright 2004, 2007-2009 Freescale Semiconductor, Inc. - * - * (C) Copyright 2003 Motorola Inc. - * Xianghua Xiao, (X.Xiao@motorola.com) - * - * (C) Copyright 2000 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <ppc_asm.tmpl> -#include <asm/processor.h> -#include <asm/io.h> - -DECLARE_GLOBAL_DATA_PTR; - -/* --------------------------------------------------------------- */ - -void get_sys_info (sys_info_t * sysInfo) -{ - volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); -#ifdef CONFIG_FSL_CORENET - volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR); - - const u8 core_cplx_PLL[16] = { - [ 0] = 0, /* CC1 PPL / 1 */ - [ 1] = 0, /* CC1 PPL / 2 */ - [ 2] = 0, /* CC1 PPL / 4 */ - [ 4] = 1, /* CC2 PPL / 1 */ - [ 5] = 1, /* CC2 PPL / 2 */ - [ 6] = 1, /* CC2 PPL / 4 */ - [ 8] = 2, /* CC3 PPL / 1 */ - [ 9] = 2, /* CC3 PPL / 2 */ - [10] = 2, /* CC3 PPL / 4 */ - [12] = 3, /* CC4 PPL / 1 */ - [13] = 3, /* CC4 PPL / 2 */ - [14] = 3, /* CC4 PPL / 4 */ - }; - - const u8 core_cplx_PLL_div[16] = { - [ 0] = 1, /* CC1 PPL / 1 */ - [ 1] = 2, /* CC1 PPL / 2 */ - [ 2] = 4, /* CC1 PPL / 4 */ - [ 4] = 1, /* CC2 PPL / 1 */ - [ 5] = 2, /* CC2 PPL / 2 */ - [ 6] = 4, /* CC2 PPL / 4 */ - [ 8] = 1, /* CC3 PPL / 1 */ - [ 9] = 2, /* CC3 PPL / 2 */ - [10] = 4, /* CC3 PPL / 4 */ - [12] = 1, /* CC4 PPL / 1 */ - [13] = 2, /* CC4 PPL / 2 */ - [14] = 4, /* CC4 PPL / 4 */ - }; - uint lcrr_div, i, freqCC_PLL[4], rcw_tmp; - unsigned long sysclk = CONFIG_SYS_CLK_FREQ; - - sysInfo->freqSystemBus = sysclk; - sysInfo->freqDDRBus = sysclk; - freqCC_PLL[0] = sysclk; - freqCC_PLL[1] = sysclk; - freqCC_PLL[2] = sysclk; - freqCC_PLL[3] = sysclk; - - sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f; - sysInfo->freqDDRBus *= ((in_be32(&gur->rcwsr[0]) >> 17) & 0x1f); - freqCC_PLL[0] *= (in_be32(&clk->pllc1gsr) >> 1) & 0x3f; - freqCC_PLL[1] *= (in_be32(&clk->pllc2gsr) >> 1) & 0x3f; - freqCC_PLL[2] *= (in_be32(&clk->pllc3gsr) >> 1) & 0x3f; - freqCC_PLL[3] *= (in_be32(&clk->pllc4gsr) >> 1) & 0x3f; - - rcw_tmp = in_be32(&gur->rcwsr[3]); - for (i = 0; i < cpu_numcores(); i++) { - u32 c_pll_sel = (in_be32(&clk->clkc0csr + i*8) >> 27) & 0xf; - u32 cplx_pll = core_cplx_PLL[c_pll_sel]; - - sysInfo->freqProcessor[i] = - freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel]; - } - -#define PME_CLK_SEL 0x80000000 -#define FM1_CLK_SEL 0x40000000 -#define FM2_CLK_SEL 0x20000000 - rcw_tmp = in_be32(&gur->rcwsr[7]); - -#ifdef CONFIG_SYS_DPAA_PME - if (rcw_tmp & PME_CLK_SEL) - sysInfo->freqPME = freqCC_PLL[2] / 2; - else - sysInfo->freqPME = sysInfo->freqSystemBus / 2; -#endif - -#ifdef CONFIG_SYS_DPAA_FMAN - if (rcw_tmp & FM1_CLK_SEL) - sysInfo->freqFMan[0] = freqCC_PLL[2] / 2; - else - sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2; -#if (CONFIG_SYS_NUM_FMAN) == 2 - if (rcw_tmp & FM2_CLK_SEL) - sysInfo->freqFMan[1] = freqCC_PLL[2] / 2; - else - sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2; -#endif -#endif - -#else - uint plat_ratio,e500_ratio,half_freqSystemBus; - uint lcrr_div; - int i; -#ifdef CONFIG_QE - u32 qe_ratio; -#endif - - plat_ratio = (gur->porpllsr) & 0x0000003e; - plat_ratio >>= 1; - sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ; - - /* Divide before multiply to avoid integer - * overflow for processor speeds above 2GHz */ - half_freqSystemBus = sysInfo->freqSystemBus/2; - for (i = 0; i < cpu_numcores(); i++) { - e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f; - sysInfo->freqProcessor[i] = e500_ratio * half_freqSystemBus; - } - - /* Note: freqDDRBus is the MCLK frequency, not the data rate. */ - sysInfo->freqDDRBus = sysInfo->freqSystemBus; - -#ifdef CONFIG_DDR_CLK_FREQ - { - u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO) - >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT; - if (ddr_ratio != 0x7) - sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ; - } -#endif -#endif - -#ifdef CONFIG_QE - qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO) - >> MPC85xx_PORPLLSR_QE_RATIO_SHIFT; - sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ; -#endif - -#if defined(CONFIG_SYS_LBC_LCRR) - /* We will program LCRR to this value later */ - lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV; -#else - { - volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR); - lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV; - } -#endif - if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) { -#if defined(CONFIG_FSL_CORENET) - /* If this is corenet based SoC, bit-representation - * for four times the clock divider values. - */ - lcrr_div *= 4; -#elif !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \ - !defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560) - /* - * Yes, the entire PQ38 family use the same - * bit-representation for twice the clock divider values. - */ - lcrr_div *= 2; -#endif - sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div; - } else { - /* In case anyone cares what the unknown value is */ - sysInfo->freqLocalBus = lcrr_div; - } -} - - -int get_clocks (void) -{ - sys_info_t sys_info; -#ifdef CONFIG_MPC8544 - volatile ccsr_gur_t *gur = (void *) CONFIG_SYS_MPC85xx_GUTS_ADDR; -#endif -#if defined(CONFIG_CPM2) - volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; - uint sccr, dfbrg; - - /* set VCO = 4 * BRG */ - cpm->im_cpm_intctl.sccr &= 0xfffffffc; - sccr = cpm->im_cpm_intctl.sccr; - dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; -#endif - get_sys_info (&sys_info); - gd->cpu_clk = sys_info.freqProcessor[0]; - gd->bus_clk = sys_info.freqSystemBus; - gd->mem_clk = sys_info.freqDDRBus; - gd->lbc_clk = sys_info.freqLocalBus; - -#ifdef CONFIG_QE - gd->qe_clk = sys_info.freqQE; - gd->brg_clk = gd->qe_clk / 2; -#endif - /* - * The base clock for I2C depends on the actual SOC. Unfortunately, - * there is no pattern that can be used to determine the frequency, so - * the only choice is to look up the actual SOC number and use the value - * for that SOC. This information is taken from application note - * AN2919. - */ -#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \ - defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555) - gd->i2c1_clk = sys_info.freqSystemBus; -#elif defined(CONFIG_MPC8544) - /* - * On the 8544, the I2C clock is the same as the SEC clock. This can be - * either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See - * 4.4.3.3 of the 8544 RM. Note that this might actually work for all - * 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the - * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544. - */ - if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG) - gd->i2c1_clk = sys_info.freqSystemBus / 3; - else - gd->i2c1_clk = sys_info.freqSystemBus / 2; -#else - /* Most 85xx SOCs use CCB/2, so this is the default behavior. */ - gd->i2c1_clk = sys_info.freqSystemBus / 2; -#endif - gd->i2c2_clk = gd->i2c1_clk; - -#if defined(CONFIG_FSL_ESDHC) -#ifdef CONFIG_MPC8569 - gd->sdhc_clk = gd->bus_clk; -#else - gd->sdhc_clk = gd->bus_clk / 2; -#endif -#endif /* defined(CONFIG_FSL_ESDHC) */ - -#if defined(CONFIG_CPM2) - gd->vco_out = 2*sys_info.freqSystemBus; - gd->cpm_clk = gd->vco_out / 2; - gd->scc_clk = gd->vco_out / 4; - gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1))); -#endif - - if(gd->cpu_clk != 0) return (0); - else return (1); -} - - -/******************************************** - * get_bus_freq - * return system bus freq in Hz - *********************************************/ -ulong get_bus_freq (ulong dummy) -{ - return gd->bus_clk; -} - -/******************************************** - * get_ddr_freq - * return ddr bus freq in Hz - *********************************************/ -ulong get_ddr_freq (ulong dummy) -{ - return gd->mem_clk; -} |