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>
unsigned int i, core, nr_cores = cpu_numcores();
u32 mask = cpu_mask();
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ unsigned int j, dsp_core, dsp_numcores = cpu_num_dspcores();
+ u32 dsp_mask = cpu_dsp_mask();
+#endif
+
svr = get_svr();
major = SVR_MAJ(svr);
minor = SVR_MIN(svr);
printf("CPU%d:%-4s MHz, ", core,
strmhz(buf1, sysinfo.freq_processor[core]));
}
+
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ for_each_cpu(j, dsp_core, dsp_numcores, dsp_mask) {
+ if (!(j & 3))
+ printf("\n ");
+ printf("DSP CPU%d:%-4s MHz, ", j,
+ strmhz(buf1, sysinfo.freq_processor_dsp[dsp_core]));
+ }
+#endif
+
printf("\n CCB:%-4s MHz,", strmhz(buf1, sysinfo.freq_systembus));
printf("\n");
printf(" QE:%-4s MHz\n", strmhz(buf1, sysinfo.freq_qe));
#endif
+#if defined(CONFIG_SYS_CPRI)
+ printf(" ");
+ printf("CPRI:%-4s MHz", strmhz(buf1, sysinfo.freq_cpri));
+#endif
+
+#if defined(CONFIG_SYS_MAPLE)
+ printf("\n ");
+ printf("MAPLE:%-4s MHz, ", strmhz(buf1, sysinfo.freq_maple));
+ printf("MAPLE-ULB:%-4s MHz, ", strmhz(buf1, sysinfo.freq_maple_ulb));
+ printf("MAPLE-eTVPE:%-4s MHz\n",
+ strmhz(buf1, sysinfo.freq_maple_etvpe));
+#endif
+
#ifdef CONFIG_SYS_DPAA_FMAN
for (i = 0; i < CONFIG_SYS_NUM_FMAN; i++) {
printf(" FMAN%d: %s MHz\n", i + 1,
#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
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
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
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) {
return mask;
}
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+u32 compute_dsp_cpumask(void)
+{
+ ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ int i = CONFIG_DSP_CLUSTER_START, count = 0;
+ u32 cluster, type, dsp_mask = 0;
+
+ do {
+ int j;
+ cluster = in_be32(&gur->tp_cluster[i].lower);
+ for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+ type = init_type(cluster, j);
+ if (type) {
+ if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_SC)
+ dsp_mask |= 1 << count;
+ count++;
+ }
+ }
+ i++;
+ } while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);
+
+ return dsp_mask;
+}
+
+int fsl_qoriq_dsp_core_to_cluster(unsigned int core)
+{
+ ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ int count = 0, i = CONFIG_DSP_CLUSTER_START;
+ u32 cluster;
+
+ do {
+ int j;
+ cluster = in_be32(&gur->tp_cluster[i].lower);
+ for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+ if (init_type(cluster, j)) {
+ if (count == core)
+ return i;
+ count++;
+ }
+ }
+ i++;
+ } while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);
+
+ return -1; /* cannot identify the cluster */
+}
+#endif
+
int fsl_qoriq_core_to_cluster(unsigned int core)
{
ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
return cpu->mask;
}
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+__weak u32 cpu_dsp_mask(void)
+{
+ ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC8xxx_PIC_ADDR;
+ struct cpu_type *cpu = gd->arch.cpu;
+
+ /* better to query feature reporting register than just assume 1 */
+ if (cpu == &cpu_type_unknown)
+ return ((in_be32(&pic->frr) & MPC8xxx_PICFRR_NCPU_MASK) >>
+ MPC8xxx_PICFRR_NCPU_SHIFT) + 1;
+
+ if (cpu->dsp_num_cores == 0)
+ return compute_dsp_cpumask();
+
+ return cpu->dsp_mask;
+}
+
/*
- * Return the number of cores on this SOC.
+ * Return the number of SC/DSP cores on this SOC.
+ */
+__weak int cpu_num_dspcores(void)
+{
+ struct cpu_type *cpu = gd->arch.cpu;
+
+ /*
+ * Report # of cores in terms of the cpu_mask if we haven't
+ * figured out how many there are yet
+ */
+ if (cpu->dsp_num_cores == 0)
+ return hweight32(cpu_dsp_mask());
+
+ return cpu->dsp_num_cores;
+}
+#endif
+
+/*
+ * Return the number of PPC cores on this SOC.
*/
__weak int cpu_numcores(void)
{
return cpu->num_cores;
}
+
/*
* Check if the given core ID is valid
*
cpu->num_cores = cpu_numcores();
}
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ if (cpu->dsp_num_cores == 0) {
+ cpu->dsp_mask = cpu_dsp_mask();
+ cpu->dsp_num_cores = cpu_num_dspcores();
+ }
+#endif
return 0;
}
#define CONFIG_FSL_CORENET /* Freescale CoreNet platform */
#define CONFIG_SYS_FSL_QORIQ_CHASSIS2 /* Freescale Chassis generation 2 */
#define CONFIG_SYS_FSL_QMAN_V3 /* QMAN version 3 */
+#define CONFIG_HETROGENOUS_CLUSTERS /* DSP/SC3900 core clusters */
+#define CONFIG_PPC_CLUSTER_START 0 /*Start index of ppc clusters*/
+#define CONFIG_DSP_CLUSTER_START 1 /*Start index of dsp clusters*/
#define CONFIG_SYS_FSL_NUM_LAWS 32
#define CONFIG_SYS_FSL_SRDS_1
#define CONFIG_SYS_FSL_SRDS_2
+#define CONFIG_SYS_MAPLE
+#define CONFIG_SYS_CPRI
+#define CONFIG_SYS_FSL_NUM_CC_PLLS 5
#define CONFIG_SYS_FSL_SEC_COMPAT 4
#define CONFIG_SYS_NUM_FMAN 1
#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
#define CONFIG_SYS_FM1_CLK 0
+#define CONFIG_SYS_CPRI_CLK 3
+#define CONFIG_SYS_ULB_CLK 4
+#define CONFIG_SYS_ETVPE_CLK 1
#define CONFIG_SYS_FSL_DDR_VER FSL_DDR_VER_4_7
#define CONFIG_SYS_FSL_IFC_BANK_COUNT 4
#define CONFIG_SYS_FMAN_V3
#ifdef CONFIG_PPC_B4860
#define CONFIG_SYS_FSL_CORES_PER_CLUSTER 4
#define CONFIG_MAX_CPUS 4
+#define CONFIG_MAX_DSP_CPUS 12
+#define CONFIG_NUM_DSP_CPUS 6
#define CONFIG_SYS_FSL_SRDS_NUM_PLLS 2
-#define CONFIG_SYS_FSL_NUM_CC_PLLS 4
#define CONFIG_SYS_FSL_CLUSTER_CLOCKS { 1, 4, 4, 4 }
#define CONFIG_SYS_NUM_FM1_DTSEC 6
#define CONFIG_SYS_NUM_FM1_10GEC 2
#define CONFIG_SYS_FSL_SRIO_LIODN
#else
#define CONFIG_MAX_CPUS 2
+#define CONFIG_MAX_DSP_CPUS 2
#define CONFIG_SYS_FSL_SRDS_NUM_PLLS 1
#define CONFIG_SYS_FSL_CORES_PER_CLUSTER 2
-#define CONFIG_SYS_FSL_NUM_CC_PLLS 4
#define CONFIG_SYS_FSL_CLUSTER_CLOCKS { 1, 4 }
#define CONFIG_SYS_NUM_FM1_DTSEC 4
#define CONFIG_SYS_NUM_FM1_10GEC 0
u32 soc_ver;
u32 num_cores;
u32 mask; /* which cpu(s) actually exist */
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ u32 dsp_num_cores;
+ u32 dsp_mask; /* which DSP cpu(s) actually exist */
+#endif
};
struct cpu_type *identify_cpu(u32 ver);
int fixup_cpu(void);
int fsl_qoriq_core_to_cluster(unsigned int core);
+int fsl_qoriq_dsp_core_to_cluster(unsigned int core);
#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
#define CPU_TYPE_ENTRY(n, v, nc) \
--- /dev/null
+DSP side awareness for Freescale heterogeneous multicore chips based on
+StarCore and Power Architecture
+===============================================================
+powerpc/mpc85xx code ve APIs and function to get the number,
+configuration and frequencies of all PowerPC cores and devices
+connected to them, but it didnt have the similar code ofr HEterogeneous
+SC3900/DSP cores and such devices like CPRI, MAPLE, MAPLE-ULB etc.
+
+Code for DSP side awareness provides such functionality for Freescale
+Heterogeneous SoCs which are chasis-2 compliant like B4860 and B4420
+
+As part of this feature, following changes have been made:
+==========================================================
+
+1. Changed files:
+=================
+- arch/powerpc/cpu/mpc85xx/cpu.c
+
+Code added in this file to print the DSP cores and other device's(CPRI,
+MAPLE etc) frequencies
+
+- arch/powerpc/cpu/mpc85xx/speed.c
+
+Added Defines and code to extract the frequncy information for all
+required cores and devices from RCW and System frequency
+
+- arch/powerpc/cpu/mpc8xxx/cpu.c
+
+Added API to get the number of SC cores in running system and Their BIT
+MASK, similar to the code written for PowerPC
+
+- arch/powerpc/include/asm/config_mpc85xx.h
+
+Added top level CONFIG to identify presence of HETEROGENUOUS clusters
+in the system and CONFIGS for SC3900/DSP components
+
+- arch/powerpc/include/asm/processor.h
+- include/common.h
+
+Added newly added Functions Declaration
+
+- include/e500.h
+
+Global structure updated for dsp cores and other components
+
+2. CONFIGs ADDED
+================
+
+CONFIG_HETROGENOUS_CLUSTERS - Define for checking the presence of
+ DSP/SC3900 core clusters
+
+CONFIG_SYS_FSL_NUM_CC_PLLS - Define for number of PLLs
+
+Though there are only 4 PLLs in B4, but in sequence of PLLs from PLL1 -
+PLL5, PLL3 is Reserved(as mentioned in RM), so this define contains the
+value as 5 not 4, to iterate over all PLLs while coding
+
+CONFIG_SYS_MAPLE - Define for MAPLE Baseband Accelerator
+CONFIG_SYS_CPRI - Define for CPRI Interface
+CONFIG_PPC_CLUSTER_START - Start index of ppc clusters
+CONFIG_DSP_CLUSTER_START - Start index of dsp clusters
+
+Following are the defines for PLL's index that provide the Clocking to
+CPRI, ULB and ETVE components
+
+CONFIG_SYS_CPRI_CLK - Define PLL index for CPRI clock
+CONFIG_SYS_ULB_CLK - Define PLL index for ULB clock
+CONFIG_SYS_ETVPE_CLK - Define PLL index for ETVPE clock
+
+3. Changes in MPC85xx_SYS_INFO Global structure
+===============================================
+
+DSP cores and other device's components have been added in this structure.
+
+freq_processor_dsp[CONFIG_MAX_DSP_CPUS] - Array to contain the DSP core's frequencies
+freq_cpri - To store CPRI frequency
+freq_maple - To store MAPLE frequency
+freq_maple_ulb - To store MAPLE-ULB frequency
+freq_maple_etvpe - To store MAPLE-eTVPE frequency
+
+4. U-BOOT LOGS
+==============
+4.1 B4860QDS board
+ Boot from NOR flash
+
+U-Boot 2014.07-00222-g70587a8-dirty (Aug 07 2014 - 13:15:47)
+
+CPU0: B4860E, Version: 2.0, (0x86880020)
+Core: e6500, Version: 2.0, (0x80400020) 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
+
+CPUn - PowerPC core
+DSP CPUn - SC3900 core
+
+Shaveta Leekha(shaveta@freescale.com)
+Created August 7, 2014
+===========================================
iter++, cpu = cpumask_next(cpu, mask)) \
int cpu_numcores (void);
+int cpu_num_dspcores(void);
u32 cpu_mask (void);
+u32 cpu_dsp_mask(void);
int is_core_valid (unsigned int);
int probecpu (void);
int checkcpu (void);
typedef struct
{
unsigned long freq_processor[CONFIG_MAX_CPUS];
+#ifdef CONFIG_HETROGENOUS_CLUSTERS
+ unsigned long freq_processor_dsp[CONFIG_MAX_DSP_CPUS];
+#endif
unsigned long freq_systembus;
unsigned long freq_ddrbus;
unsigned long freq_localbus;
#ifdef CONFIG_SYS_DPAA_PME
unsigned long freq_pme;
#endif
+#ifdef CONFIG_SYS_CPRI
+ unsigned long freq_cpri;
+#endif
+#ifdef CONFIG_SYS_MAPLE
+ unsigned long freq_maple;
+ unsigned long freq_maple_ulb;
+ unsigned long freq_maple_etvpe;
+#endif
#ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK
unsigned char diff_sysclk;
#endif
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