1. 04 Mar, 2015 1 commit
    • Shaveta Leekha's avatar
      powerpc/mpc85xx: Add DSP side awareness for Freescale Heterogeneous SoCs · b8bf0adc
      Shaveta Leekha authored
      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: 's avatarShaveta Leekha <shaveta@freescale.com>
      Reviewed-by: 's avatarYork Sun <yorksun@freescale.com>
      b8bf0adc