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u-boot-brain/arch/powerpc/cpu/mpc85xx/speed.c
York Sun f69814397e powerpc/chassis2: Change core numbering scheme 
To align with chassis generation 2 spec, all cores are numbered in sequence.
The cores may reside across multiple clusters. Each cluster has zero to four
cores. The first available core is numbered as core 0. The second available
core is numbered as core 1 and so on.

Core clocks are generated by each clusters. To identify the cluster of each
core, topology registers are examined.

Cluster clock registers are reorganized to be easily indexed.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-05-24 16:54:11 -05:00

476 lines
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/*
* Copyright 2004, 2007-2011 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 <linux/compiler.h>
#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_IFC
struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
u32 ccr;
#endif
#ifdef CONFIG_FSL_CORENET
volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
unsigned int cpu;
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 i, freqCC_PLL[6], rcw_tmp;
uint ratio[6];
unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
uint mem_pll_rat;
sysInfo->freqSystemBus = sysclk;
#ifdef CONFIG_DDR_CLK_FREQ
sysInfo->freqDDRBus = CONFIG_DDR_CLK_FREQ;
#else
sysInfo->freqDDRBus = sysclk;
#endif
sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f;
mem_pll_rat = (in_be32(&gur->rcwsr[0]) >>
FSL_CORENET_RCWSR0_MEM_PLL_RAT_SHIFT)
& FSL_CORENET_RCWSR0_MEM_PLL_RAT_MASK;
if (mem_pll_rat > 2)
sysInfo->freqDDRBus *= mem_pll_rat;
else
sysInfo->freqDDRBus = sysInfo->freqSystemBus * mem_pll_rat;
ratio[0] = (in_be32(&clk->pllc1gsr) >> 1) & 0x3f;
ratio[1] = (in_be32(&clk->pllc2gsr) >> 1) & 0x3f;
ratio[2] = (in_be32(&clk->pllc3gsr) >> 1) & 0x3f;
ratio[3] = (in_be32(&clk->pllc4gsr) >> 1) & 0x3f;
ratio[4] = (in_be32(&clk->pllc5gsr) >> 1) & 0x3f;
ratio[5] = (in_be32(&clk->pllc6gsr) >> 1) & 0x3f;
for (i = 0; i < 6; i++) {
if (ratio[i] > 4)
freqCC_PLL[i] = sysclk * ratio[i];
else
freqCC_PLL[i] = sysInfo->freqSystemBus * ratio[i];
}
#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
/*
* Each cluster has up to 4 cores, sharing the same PLL selection.
* The cluster assignment is fixed per SoC. PLL1, PLL2, PLL3 are
* cluster group A, feeding cores on cluster 1 and cluster 2.
* PLL4, PLL5, PLL6 are cluster group B, feeding cores on cluster 3
* and cluster 4 if existing.
*/
for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
int cluster = fsl_qoriq_core_to_cluster(cpu);
u32 c_pll_sel = (in_be32(&clk->clkcsr[cluster].clkcncsr) >> 27)
& 0xf;
u32 cplx_pll = core_cplx_PLL[c_pll_sel];
if (cplx_pll > 3)
printf("Unsupported architecture configuration"
" in function %s\n", __func__);
cplx_pll += (cluster / 2) * 3;
sysInfo->freqProcessor[cpu] =
freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
}
#ifdef CONFIG_PPC_B4860
#define FM1_CLK_SEL 0xe0000000
#define FM1_CLK_SHIFT 29
#else
#define PME_CLK_SEL 0xe0000000
#define PME_CLK_SHIFT 29
#define FM1_CLK_SEL 0x1c000000
#define FM1_CLK_SHIFT 26
#endif
rcw_tmp = in_be32(&gur->rcwsr[7]);
#ifdef CONFIG_SYS_DPAA_PME
switch ((rcw_tmp & PME_CLK_SEL) >> PME_CLK_SHIFT) {
case 1:
sysInfo->freqPME = freqCC_PLL[0];
break;
case 2:
sysInfo->freqPME = freqCC_PLL[0] / 2;
break;
case 3:
sysInfo->freqPME = freqCC_PLL[0] / 3;
break;
case 4:
sysInfo->freqPME = freqCC_PLL[0] / 4;
break;
case 6:
sysInfo->freqPME = freqCC_PLL[1] / 2;
break;
case 7:
sysInfo->freqPME = freqCC_PLL[1] / 3;
break;
default:
printf("Error: Unknown PME clock select!\n");
case 0:
sysInfo->freqPME = sysInfo->freqSystemBus / 2;
break;
}
#endif
#ifdef CONFIG_SYS_DPAA_QBMAN
sysInfo->freqQMAN = sysInfo->freqSystemBus / 2;
#endif
#ifdef CONFIG_SYS_DPAA_FMAN
switch ((rcw_tmp & FM1_CLK_SEL) >> FM1_CLK_SHIFT) {
case 1:
sysInfo->freqFMan[0] = freqCC_PLL[3];
break;
case 2:
sysInfo->freqFMan[0] = freqCC_PLL[3] / 2;
break;
case 3:
sysInfo->freqFMan[0] = freqCC_PLL[3] / 3;
break;
case 4:
sysInfo->freqFMan[0] = freqCC_PLL[3] / 4;
break;
case 5:
sysInfo->freqFMan[0] = sysInfo->freqSystemBus;
break;
case 6:
sysInfo->freqFMan[0] = freqCC_PLL[4] / 2;
break;
case 7:
sysInfo->freqFMan[0] = freqCC_PLL[4] / 3;
break;
default:
printf("Error: Unknown FMan1 clock select!\n");
case 0:
sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
break;
}
#if (CONFIG_SYS_NUM_FMAN) == 2
#define FM2_CLK_SEL 0x00000038
#define FM2_CLK_SHIFT 3
rcw_tmp = in_be32(&gur->rcwsr[15]);
switch ((rcw_tmp & FM2_CLK_SEL) >> FM2_CLK_SHIFT) {
case 1:
sysInfo->freqFMan[1] = freqCC_PLL[4];
break;
case 2:
sysInfo->freqFMan[1] = freqCC_PLL[4] / 2;
break;
case 3:
sysInfo->freqFMan[1] = freqCC_PLL[4] / 3;
break;
case 4:
sysInfo->freqFMan[1] = freqCC_PLL[4] / 4;
break;
case 6:
sysInfo->freqFMan[1] = freqCC_PLL[3] / 2;
break;
case 7:
sysInfo->freqFMan[1] = freqCC_PLL[3] / 3;
break;
default:
printf("Error: Unknown FMan2 clock select!\n");
case 0:
sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
break;
}
#endif /* CONFIG_SYS_NUM_FMAN == 2 */
#endif /* CONFIG_SYS_DPAA_FMAN */
#else /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
u32 c_pll_sel = (in_be32(&clk->clkcsr[cpu].clkcncsr) >> 27)
& 0xf;
u32 cplx_pll = core_cplx_PLL[c_pll_sel];
sysInfo->freqProcessor[cpu] =
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
#define HWA_ASYNC_DIV 0x04000000
#if (CONFIG_SYS_FSL_NUM_CC_PLLS == 2)
#define HWA_CC_PLL 1
#elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 3)
#define HWA_CC_PLL 2
#elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 4)
#define HWA_CC_PLL 2
#else
#error CONFIG_SYS_FSL_NUM_CC_PLLS not set or unknown case
#endif
rcw_tmp = in_be32(&gur->rcwsr[7]);
#ifdef CONFIG_SYS_DPAA_PME
if (rcw_tmp & PME_CLK_SEL) {
if (rcw_tmp & HWA_ASYNC_DIV)
sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 4;
else
sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 2;
} else {
sysInfo->freqPME = sysInfo->freqSystemBus / 2;
}
#endif
#ifdef CONFIG_SYS_DPAA_FMAN
if (rcw_tmp & FM1_CLK_SEL) {
if (rcw_tmp & HWA_ASYNC_DIV)
sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 4;
else
sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 2;
} else {
sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
}
#if (CONFIG_SYS_NUM_FMAN) == 2
if (rcw_tmp & FM2_CLK_SEL) {
if (rcw_tmp & HWA_ASYNC_DIV)
sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 4;
else
sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 2;
} else {
sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
}
#endif
#endif
#ifdef CONFIG_SYS_DPAA_QBMAN
sysInfo->freqQMAN = sysInfo->freqSystemBus / 2;
#endif
#endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
#else /* CONFIG_FSL_CORENET */
uint plat_ratio, e500_ratio, half_freqSystemBus;
int i;
#ifdef CONFIG_QE
__maybe_unused 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
#ifdef CONFIG_QE
#if defined(CONFIG_P1012) || defined(CONFIG_P1021) || defined(CONFIG_P1025)
sysInfo->freqQE = sysInfo->freqSystemBus;
#else
qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO)
>> MPC85xx_PORPLLSR_QE_RATIO_SHIFT;
sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ;
#endif
#endif
#ifdef CONFIG_SYS_DPAA_FMAN
sysInfo->freqFMan[0] = sysInfo->freqSystemBus;
#endif
#endif /* CONFIG_FSL_CORENET */
#if defined(CONFIG_FSL_LBC)
uint lcrr_div;
#if defined(CONFIG_SYS_LBC_LCRR)
/* We will program LCRR to this value later */
lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
#else
lcrr_div = in_be32(&(LBC_BASE_ADDR)->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;
}
#endif
#if defined(CONFIG_FSL_IFC)
ccr = in_be32(&ifc_regs->ifc_ccr);
ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
sysInfo->freqLocalBus = sysInfo->freqSystemBus / ccr;
#endif
}
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->arch.lbc_clk = sys_info.freqLocalBus;
#ifdef CONFIG_QE
gd->arch.qe_clk = sys_info.freqQE;
gd->arch.brg_clk = gd->arch.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->arch.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->arch.i2c1_clk = sys_info.freqSystemBus / 3;
else
gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
#else
/* Most 85xx SOCs use CCB/2, so this is the default behavior. */
gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
#endif
gd->arch.i2c2_clk = gd->arch.i2c1_clk;
#if defined(CONFIG_FSL_ESDHC)
#if defined(CONFIG_MPC8569) || defined(CONFIG_P1010) ||\
defined(CONFIG_P1014)
gd->arch.sdhc_clk = gd->bus_clk;
#else
gd->arch.sdhc_clk = gd->bus_clk / 2;
#endif
#endif /* defined(CONFIG_FSL_ESDHC) */
#if defined(CONFIG_CPM2)
gd->arch.vco_out = 2*sys_info.freqSystemBus;
gd->arch.cpm_clk = gd->arch.vco_out / 2;
gd->arch.scc_clk = gd->arch.vco_out / 4;
gd->arch.brg_clk = gd->arch.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;
}
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