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https://github.com/AsahiLinux/u-boot
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bc20f9a952
We incorrectly had the sense of PME_CLK_SEL, FM1_CLK_SEL, FM2_CLK_SEL backwards so we report the wrong frequency. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
278 lines
8 KiB
C
278 lines
8 KiB
C
/*
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* Copyright 2004, 2007-2009 Freescale Semiconductor, Inc.
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*
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* (C) Copyright 2003 Motorola Inc.
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* Xianghua Xiao, (X.Xiao@motorola.com)
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*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <ppc_asm.tmpl>
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#include <asm/processor.h>
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#include <asm/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* --------------------------------------------------------------- */
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void get_sys_info (sys_info_t * sysInfo)
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{
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volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
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#ifdef CONFIG_FSL_CORENET
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volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
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const u8 core_cplx_PLL[16] = {
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[ 0] = 0, /* CC1 PPL / 1 */
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[ 1] = 0, /* CC1 PPL / 2 */
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[ 2] = 0, /* CC1 PPL / 4 */
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[ 4] = 1, /* CC2 PPL / 1 */
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[ 5] = 1, /* CC2 PPL / 2 */
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[ 6] = 1, /* CC2 PPL / 4 */
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[ 8] = 2, /* CC3 PPL / 1 */
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[ 9] = 2, /* CC3 PPL / 2 */
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[10] = 2, /* CC3 PPL / 4 */
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[12] = 3, /* CC4 PPL / 1 */
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[13] = 3, /* CC4 PPL / 2 */
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[14] = 3, /* CC4 PPL / 4 */
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};
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const u8 core_cplx_PLL_div[16] = {
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[ 0] = 1, /* CC1 PPL / 1 */
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[ 1] = 2, /* CC1 PPL / 2 */
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[ 2] = 4, /* CC1 PPL / 4 */
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[ 4] = 1, /* CC2 PPL / 1 */
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[ 5] = 2, /* CC2 PPL / 2 */
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[ 6] = 4, /* CC2 PPL / 4 */
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[ 8] = 1, /* CC3 PPL / 1 */
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[ 9] = 2, /* CC3 PPL / 2 */
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[10] = 4, /* CC3 PPL / 4 */
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[12] = 1, /* CC4 PPL / 1 */
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[13] = 2, /* CC4 PPL / 2 */
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[14] = 4, /* CC4 PPL / 4 */
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};
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uint lcrr_div, i, freqCC_PLL[4], rcw_tmp;
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unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
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sysInfo->freqSystemBus = sysclk;
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sysInfo->freqDDRBus = sysclk;
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freqCC_PLL[0] = sysclk;
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freqCC_PLL[1] = sysclk;
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freqCC_PLL[2] = sysclk;
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freqCC_PLL[3] = sysclk;
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sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0xf;
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sysInfo->freqDDRBus *= ((in_be32(&gur->rcwsr[0]) >> 17) & 0xf);
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freqCC_PLL[0] *= (in_be32(&clk->pllc1gsr) >> 1) & 0x3f;
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freqCC_PLL[1] *= (in_be32(&clk->pllc2gsr) >> 1) & 0x3f;
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freqCC_PLL[2] *= (in_be32(&clk->pllc3gsr) >> 1) & 0x3f;
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freqCC_PLL[3] *= (in_be32(&clk->pllc4gsr) >> 1) & 0x3f;
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rcw_tmp = in_be32(&gur->rcwsr[3]);
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for (i = 0; i < cpu_numcores(); i++) {
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u32 c_pll_sel = (in_be32(&clk->clkc0csr + i*8) >> 27) & 0xf;
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u32 cplx_pll = core_cplx_PLL[c_pll_sel];
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sysInfo->freqProcessor[i] =
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freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
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}
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#define PME_CLK_SEL 0x80000000
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#define FM1_CLK_SEL 0x40000000
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#define FM2_CLK_SEL 0x20000000
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rcw_tmp = in_be32(&gur->rcwsr[7]);
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#ifdef CONFIG_SYS_DPAA_PME
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if (rcw_tmp & PME_CLK_SEL)
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sysInfo->freqPME = sysInfo->freqSystemBus / 2;
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else
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sysInfo->freqPME = freqCC_PLL[2] / 2;
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#endif
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#ifdef CONFIG_SYS_DPAA_FMAN
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if (rcw_tmp & FM1_CLK_SEL)
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sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
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else
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sysInfo->freqFMan[0] = freqCC_PLL[2] / 2;
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#if (CONFIG_SYS_NUM_FMAN) == 2
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if (rcw_tmp & FM2_CLK_SEL)
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sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
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else
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sysInfo->freqFMan[1] = freqCC_PLL[2] / 2;
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#endif
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#endif
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#else
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uint plat_ratio,e500_ratio,half_freqSystemBus;
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uint lcrr_div;
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int i;
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#ifdef CONFIG_QE
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u32 qe_ratio;
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#endif
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plat_ratio = (gur->porpllsr) & 0x0000003e;
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plat_ratio >>= 1;
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sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ;
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/* Divide before multiply to avoid integer
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* overflow for processor speeds above 2GHz */
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half_freqSystemBus = sysInfo->freqSystemBus/2;
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for (i = 0; i < cpu_numcores(); i++) {
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e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f;
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sysInfo->freqProcessor[i] = e500_ratio * half_freqSystemBus;
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}
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/* Note: freqDDRBus is the MCLK frequency, not the data rate. */
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sysInfo->freqDDRBus = sysInfo->freqSystemBus;
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#ifdef CONFIG_DDR_CLK_FREQ
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{
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u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
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>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
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if (ddr_ratio != 0x7)
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sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ;
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}
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#endif
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#endif
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#ifdef CONFIG_QE
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qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO)
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>> MPC85xx_PORPLLSR_QE_RATIO_SHIFT;
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sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ;
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#endif
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#if defined(CONFIG_SYS_LBC_LCRR)
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/* We will program LCRR to this value later */
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lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
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#else
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{
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volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
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lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV;
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}
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#endif
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if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) {
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#if !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
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!defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
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/*
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* Yes, the entire PQ38 family use the same
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* bit-representation for twice the clock divider values.
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*/
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lcrr_div *= 2;
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#endif
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sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div;
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} else {
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/* In case anyone cares what the unknown value is */
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sysInfo->freqLocalBus = lcrr_div;
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}
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}
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int get_clocks (void)
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{
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sys_info_t sys_info;
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#ifdef CONFIG_MPC8544
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volatile ccsr_gur_t *gur = (void *) CONFIG_SYS_MPC85xx_GUTS_ADDR;
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#endif
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#if defined(CONFIG_CPM2)
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volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
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uint sccr, dfbrg;
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/* set VCO = 4 * BRG */
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cpm->im_cpm_intctl.sccr &= 0xfffffffc;
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sccr = cpm->im_cpm_intctl.sccr;
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dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
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#endif
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get_sys_info (&sys_info);
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gd->cpu_clk = sys_info.freqProcessor[0];
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gd->bus_clk = sys_info.freqSystemBus;
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gd->mem_clk = sys_info.freqDDRBus;
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gd->lbc_clk = sys_info.freqLocalBus;
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#ifdef CONFIG_QE
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gd->qe_clk = sys_info.freqQE;
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gd->brg_clk = gd->qe_clk / 2;
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#endif
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/*
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* The base clock for I2C depends on the actual SOC. Unfortunately,
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* there is no pattern that can be used to determine the frequency, so
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* the only choice is to look up the actual SOC number and use the value
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* for that SOC. This information is taken from application note
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* AN2919.
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*/
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#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
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defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555)
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gd->i2c1_clk = sys_info.freqSystemBus;
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#elif defined(CONFIG_MPC8544)
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/*
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* On the 8544, the I2C clock is the same as the SEC clock. This can be
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* either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See
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* 4.4.3.3 of the 8544 RM. Note that this might actually work for all
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* 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the
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* PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544.
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*/
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if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG)
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gd->i2c1_clk = sys_info.freqSystemBus / 3;
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else
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gd->i2c1_clk = sys_info.freqSystemBus / 2;
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#else
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/* Most 85xx SOCs use CCB/2, so this is the default behavior. */
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gd->i2c1_clk = sys_info.freqSystemBus / 2;
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#endif
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gd->i2c2_clk = gd->i2c1_clk;
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#if defined(CONFIG_FSL_ESDHC)
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#ifdef CONFIG_MPC8569
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gd->sdhc_clk = gd->bus_clk;
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#else
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gd->sdhc_clk = gd->bus_clk / 2;
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#endif
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#endif /* defined(CONFIG_FSL_ESDHC) */
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#if defined(CONFIG_CPM2)
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gd->vco_out = 2*sys_info.freqSystemBus;
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gd->cpm_clk = gd->vco_out / 2;
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gd->scc_clk = gd->vco_out / 4;
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gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1)));
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#endif
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if(gd->cpu_clk != 0) return (0);
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else return (1);
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}
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/********************************************
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* get_bus_freq
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* return system bus freq in Hz
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*********************************************/
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ulong get_bus_freq (ulong dummy)
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{
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return gd->bus_clk;
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}
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/********************************************
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* get_ddr_freq
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* return ddr bus freq in Hz
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*********************************************/
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ulong get_ddr_freq (ulong dummy)
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{
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return gd->mem_clk;
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}
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