/*
- * Copyright 2004 Freescale Semiconductor.
+ * Copyright 2004, 2007-2009 Freescale Semiconductor, Inc.
+ *
* (C) Copyright 2003 Motorola Inc.
* Xianghua Xiao, (X.Xiao@motorola.com)
*
#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 immap_t *immap = (immap_t *)CFG_IMMR;
- volatile ccsr_gur_t *gur = &immap->im_gur;
- uint plat_ratio,e500_ratio;
+ 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) & 0xf;
+ sysInfo->freqDDRBus *= ((in_be32(&gur->rcwsr[0]) >> 17) & 0xf);
+ 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;
- switch(plat_ratio) {
- case 0x02:
- case 0x03:
- case 0x04:
- case 0x05:
- case 0x06:
- case 0x08:
- case 0x09:
- case 0x0a:
- case 0x0c:
- case 0x10:
- sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ;
- break;
- default:
- sysInfo->freqSystemBus = 0;
- break;
+ 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;
}
- e500_ratio = (gur->porpllsr) & 0x003f0000;
- e500_ratio >>= 16;
- switch(e500_ratio) {
- case 0x04:
- sysInfo->freqProcessor = 2*sysInfo->freqSystemBus;
- break;
- case 0x05:
- sysInfo->freqProcessor = 5*sysInfo->freqSystemBus/2;
- break;
- case 0x06:
- sysInfo->freqProcessor = 3*sysInfo->freqSystemBus;
- break;
- case 0x07:
- sysInfo->freqProcessor = 7*sysInfo->freqSystemBus/2;
- break;
- default:
- sysInfo->freqProcessor = 0;
- break;
+ /* 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_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 immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
uint sccr, dfbrg;
/* set VCO = 4 * BRG */
- immap->im_cpm.im_cpm_intctl.sccr &= 0xfffffffc;
- sccr = immap->im_cpm.im_cpm_intctl.sccr;
+ 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;
+ 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)
+ gd->sdhc_clk = gd->bus_clk / 2;
+#endif
+
#if defined(CONFIG_CPM2)
gd->vco_out = 2*sys_info.freqSystemBus;
gd->cpm_clk = gd->vco_out / 2;
*********************************************/
ulong get_bus_freq (ulong dummy)
{
- ulong val;
-
- sys_info_t sys_info;
-
- get_sys_info (&sys_info);
- val = sys_info.freqSystemBus;
+ return gd->bus_clk;
+}
- return val;
+/********************************************
+ * get_ddr_freq
+ * return ddr bus freq in Hz
+ *********************************************/
+ulong get_ddr_freq (ulong dummy)
+{
+ return gd->mem_clk;
}
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