powerpc/mpc85xx: Add DSP side awareness for Freescale Heterogeneous SoCs
The code provides framework for heterogeneous multicore chips based on StarCore
and Power Architecture which are chasis-2 compliant, like B4860 and B4420
It will make u-boot recognize all non-ppc cores and peripherals like
SC3900/DSP CPUs, MAPLE, CPRI and print their configuration in u-boot logs.
Example boot logs of B4860QDS:
U-Boot 2015.01-00232-geef6e36-dirty (Jan 19 2015 - 11:58:45)
CPU0: B4860E, Version: 2.2, (0x86880022)
Core: e6500, Version: 2.0, (0x80400120)
Clock Configuration:
CPU0:1600 MHz, CPU1:1600 MHz, CPU2:1600 MHz, CPU3:1600 MHz,
DSP CPU0:1200 MHz, DSP CPU1:1200 MHz, DSP CPU2:1200 MHz, DSP CPU3:1200 MHz,
DSP CPU4:1200 MHz, DSP CPU5:1200 MHz,
CCB:666.667 MHz,
DDR:933.333 MHz (1866.667 MT/s data rate) (Asynchronous), IFC:166.667 MHz
CPRI:600 MHz
MAPLE:600 MHz, MAPLE-ULB:800 MHz, MAPLE-eTVPE:1000 MHz
FMAN1: 666.667 MHz
QMAN: 333.333 MHz
Top level changes include:
(1) Top level CONFIG to identify HETEROGENUOUS clusters
(2) CONFIGS for SC3900/DSP components
(3) Global structures like "cpu_type" and "MPC85xx_SYS_INFO"
updated for dsp cores and other components
(3) APIs to get DSP num cores and their Mask like:
cpu_dsp_mask, cpu_num_dspcores etc same as that of PowerPC
(5) Code to fetch and print SC cores and other heterogenous
device's frequencies
(6) README added for the same
Signed-off-by: Shaveta Leekha <shaveta@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 7e69873..e24b857 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -34,6 +34,10 @@
#ifdef CONFIG_FSL_CORENET
volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
unsigned int cpu;
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ unsigned int dsp_cpu;
+ uint rcw_tmp1, rcw_tmp2;
+#endif
#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
int cc_group[12] = CONFIG_SYS_FSL_CLUSTER_CLOCKS;
#endif
@@ -157,6 +161,7 @@
else
freq_c_pll[i] = sys_info->freq_systembus * ratio[i];
}
+
#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
/*
* As per CHASSIS2 architeture total 12 clusters are posible and
@@ -181,6 +186,20 @@
sys_info->freq_processor[cpu] =
freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
}
+
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ for_each_cpu(i, dsp_cpu, cpu_num_dspcores(), cpu_dsp_mask()) {
+ int dsp_cluster = fsl_qoriq_dsp_core_to_cluster(dsp_cpu);
+ u32 c_pll_sel = (in_be32
+ (&clk->clkcsr[dsp_cluster].clkcncsr) >> 27)
+ & 0xf;
+ u32 cplx_pll = core_cplx_PLL[c_pll_sel];
+ cplx_pll += cc_group[dsp_cluster] - 1;
+ sys_info->freq_processor_dsp[dsp_cpu] =
+ freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
+ }
+#endif
+
#if defined(CONFIG_PPC_B4860) || defined(CONFIG_PPC_B4420) || \
defined(CONFIG_PPC_T2080) || defined(CONFIG_PPC_T2081)
#define FM1_CLK_SEL 0xe0000000
@@ -243,6 +262,127 @@
sys_info->freq_qman = sys_info->freq_systembus / CONFIG_QBMAN_CLK_DIV;
#endif
+#if defined(CONFIG_SYS_MAPLE)
+#define CPRI_CLK_SEL 0x1C000000
+#define CPRI_CLK_SHIFT 26
+#define CPRI_ALT_CLK_SEL 0x00007000
+#define CPRI_ALT_CLK_SHIFT 12
+
+ rcw_tmp1 = in_be32(&gur->rcwsr[7]); /* Reading RCW bits: 224-255*/
+ rcw_tmp2 = in_be32(&gur->rcwsr[15]); /* Reading RCW bits: 480-511*/
+ /* For MAPLE and CPRI frequency */
+ switch ((rcw_tmp1 & CPRI_CLK_SEL) >> CPRI_CLK_SHIFT) {
+ case 1:
+ sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK];
+ sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK];
+ break;
+ case 2:
+ sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 2;
+ sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 2;
+ break;
+ case 3:
+ sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 3;
+ sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 3;
+ break;
+ case 4:
+ sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 4;
+ sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 4;
+ break;
+ case 5:
+ if (((rcw_tmp2 & CPRI_ALT_CLK_SEL)
+ >> CPRI_ALT_CLK_SHIFT) == 6) {
+ sys_info->freq_maple =
+ freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 2;
+ sys_info->freq_cpri =
+ freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 2;
+ }
+ if (((rcw_tmp2 & CPRI_ALT_CLK_SEL)
+ >> CPRI_ALT_CLK_SHIFT) == 7) {
+ sys_info->freq_maple =
+ freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 3;
+ sys_info->freq_cpri =
+ freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 3;
+ }
+ break;
+ case 6:
+ sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 2;
+ sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 2;
+ break;
+ case 7:
+ sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 3;
+ sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 3;
+ break;
+ default:
+ printf("Error: Unknown MAPLE/CPRI clock select!\n");
+ }
+
+ /* For MAPLE ULB and eTVPE frequencies */
+#define ULB_CLK_SEL 0x00000038
+#define ULB_CLK_SHIFT 3
+#define ETVPE_CLK_SEL 0x00000007
+#define ETVPE_CLK_SHIFT 0
+
+ switch ((rcw_tmp2 & ULB_CLK_SEL) >> ULB_CLK_SHIFT) {
+ case 1:
+ sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK];
+ break;
+ case 2:
+ sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK] / 2;
+ break;
+ case 3:
+ sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK] / 3;
+ break;
+ case 4:
+ sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK] / 4;
+ break;
+ case 5:
+ sys_info->freq_maple_ulb = sys_info->freq_systembus;
+ break;
+ case 6:
+ sys_info->freq_maple_ulb =
+ freq_c_pll[CONFIG_SYS_ULB_CLK - 1] / 2;
+ break;
+ case 7:
+ sys_info->freq_maple_ulb =
+ freq_c_pll[CONFIG_SYS_ULB_CLK - 1] / 3;
+ break;
+ default:
+ printf("Error: Unknown MAPLE ULB clock select!\n");
+ }
+
+ switch ((rcw_tmp2 & ETVPE_CLK_SEL) >> ETVPE_CLK_SHIFT) {
+ case 1:
+ sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK];
+ break;
+ case 2:
+ sys_info->freq_maple_etvpe =
+ freq_c_pll[CONFIG_SYS_ETVPE_CLK] / 2;
+ break;
+ case 3:
+ sys_info->freq_maple_etvpe =
+ freq_c_pll[CONFIG_SYS_ETVPE_CLK] / 3;
+ break;
+ case 4:
+ sys_info->freq_maple_etvpe =
+ freq_c_pll[CONFIG_SYS_ETVPE_CLK] / 4;
+ break;
+ case 5:
+ sys_info->freq_maple_etvpe = sys_info->freq_systembus;
+ break;
+ case 6:
+ sys_info->freq_maple_etvpe =
+ freq_c_pll[CONFIG_SYS_ETVPE_CLK - 1] / 2;
+ break;
+ case 7:
+ sys_info->freq_maple_etvpe =
+ freq_c_pll[CONFIG_SYS_ETVPE_CLK - 1] / 3;
+ break;
+ default:
+ printf("Error: Unknown MAPLE eTVPE clock select!\n");
+ }
+
+#endif
+
#ifdef CONFIG_SYS_DPAA_FMAN
#ifndef CONFIG_FM_PLAT_CLK_DIV
switch ((rcw_tmp & FM1_CLK_SEL) >> FM1_CLK_SHIFT) {